Event captures all the information that can be included in an API audit log.
+| Field | Description |
|---|---|
apiVersionstring | audit.k8s.io/v1 |
kindstring | Event |
level [Required]Level
|
- AuditLevel at which event was generated | +
auditID [Required]- k8s.io/apimachinery/pkg/types.UID
+k8s.io/apimachinery/pkg/types.UID
|
- Unique audit ID, generated for each request. | +
stage [Required]Stage
|
- Stage of the request handling when this event instance was generated. | +
requestURI [Required]string
|
- RequestURI is the request URI as sent by the client to a server. | +
verb [Required]string
|
- Verb is the kubernetes verb associated with the request. -For non-resource requests, this is the lower-cased HTTP method. | +
user [Required]authentication/v1.UserInfo
|
- Authenticated user information. | +
impersonatedUserauthentication/v1.UserInfo
|
- Impersonated user information. | +
sourceIPs[]string
|
- Source IPs, from where the request originated and intermediate proxies. | +
userAgentstring
|
- UserAgent records the user agent string reported by the client. -Note that the UserAgent is provided by the client, and must not be trusted. | +
objectRefObjectReference
|
- Object reference this request is targeted at. -Does not apply for List-type requests, or non-resource requests. | +
responseStatusmeta/v1.Status
|
- The response status, populated even when the ResponseObject is not a Status type.
+ The response status, populated even when the ResponseObject is not a Status type. For successful responses, this will only include the Code and StatusSuccess. -For non-status type error responses, this will be auto-populated with the error Message. |
+For non-status type error responses, this will be auto-populated with the error Message.
+
requestObject- k8s.io/apimachinery/pkg/runtime.Unknown
+k8s.io/apimachinery/pkg/runtime.Unknown
|
- API object from the request, in JSON format. The RequestObject is recorded as-is in the request
+ API object from the request, in JSON format. The RequestObject is recorded as-is in the request (possibly re-encoded as JSON), prior to version conversion, defaulting, admission or merging. It is an external versioned object type, and may not be a valid object on its own. -Omitted for non-resource requests. Only logged at Request Level and higher. |
+Omitted for non-resource requests. Only logged at Request Level and higher.
+
responseObject- k8s.io/apimachinery/pkg/runtime.Unknown
+k8s.io/apimachinery/pkg/runtime.Unknown
|
- API object returned in the response, in JSON. The ResponseObject is recorded after conversion
+ API object returned in the response, in JSON. The ResponseObject is recorded after conversion to the external type, and serialized as JSON. Omitted for non-resource requests. Only logged -at Response Level. |
+at Response Level.
+
requestReceivedTimestampmeta/v1.MicroTime
|
- Time the request reached the apiserver. | +
stageTimestampmeta/v1.MicroTime
|
- Time the request reached current audit stage. | +
annotationsmap[string]string
|
- Annotations is an unstructured key value map stored with an audit event that may be set by
+ Annotations is an unstructured key value map stored with an audit event that may be set by plugins invoked in the request serving chain, including authentication, authorization and admission plugins. Note that these annotations are for the audit event, and do not correspond to the metadata.annotations of the submitted object. Keys should uniquely identify the informing component to avoid name collisions (e.g. podsecuritypolicy.admission.k8s.io/policy). Values -should be short. Annotations are included in the Metadata level. |
+should be short. Annotations are included in the Metadata level.
+
EventList is a list of audit Events.
-EventList is a list of audit Events. -| Field | Description |
|---|---|
apiVersionstring | audit.k8s.io/v1 |
kindstring | EventList |
metadatameta/v1.ListMeta
|
- No description provided. - | + No description provided.
items [Required][]Event
|
- No description provided. - | + No description provided.
Policy defines the configuration of audit logging, and the rules for how different request +categories are logged.
+| Field | Description |
|---|---|
apiVersionstring | audit.k8s.io/v1 |
kindstring | Policy |
metadatameta/v1.ObjectMeta
|
- ObjectMeta is included for interoperability with API infrastructure.Refer to the Kubernetes API documentation for the fields of the metadata field. |
+
rules [Required][]PolicyRule
|
- Rules specify the audit Level a request should be recorded at.
+ Rules specify the audit Level a request should be recorded at. A request may match multiple rules, in which case the FIRST matching rule is used. The default audit level is None, but can be overridden by a catch-all rule at the end of the list. -PolicyRules are strictly ordered. |
+PolicyRules are strictly ordered.
+
omitStages[]Stage
|
- OmitStages is a list of stages for which no events are created. Note that this can also -be specified per rule in which case the union of both are omitted. | +
omitManagedFieldsbool
|
- OmitManagedFields indicates whether to omit the managed fields of the request
+ OmitManagedFields indicates whether to omit the managed fields of the request and response bodies from being written to the API audit log. This is used as a global default - a value of 'true' will omit the managed fileds, otherwise the managed fields will be included in the API audit log. Note that this can also be specified per rule in which case the value specified -in a rule will override the global default. |
+in a rule will override the global default.
+
PolicyList is a list of audit Policies.
-PolicyList is a list of audit Policies. -| Field | Description |
|---|---|
apiVersionstring | audit.k8s.io/v1 |
kindstring | PolicyList |
metadatameta/v1.ListMeta
|
- No description provided. - | + No description provided.
items [Required][]Policy
|
- No description provided. - | + No description provided.
GroupResources represents resource kinds in an API group.
+| Field | Description |
|---|---|
groupstring
|
- Group is the name of the API group that contains the resources. -The empty string represents the core API group. | +
resources[]string
|
- Resources is a list of resources this rule applies to.
-
-For example:
+ Resources is a list of resources this rule applies to. +For example: 'pods' matches pods. 'pods/log' matches the log subresource of pods. -'∗' matches all resources and their subresources. -'pods/∗' matches all subresources of pods. -'∗/scale' matches all scale subresources. - -If wildcard is present, the validation rule will ensure resources do not -overlap with each other. - -An empty list implies all resources and subresources in this API groups apply. |
+'' matches all resources and their subresources.
+'pods/' matches all subresources of pods.
+'*/scale' matches all scale subresources.
+
resourceNames[]string
|
- ResourceNames is a list of resource instance names that the policy matches.
+ ResourceNames is a list of resource instance names that the policy matches. Using this field requires Resources to be specified. -An empty list implies that every instance of the resource is matched. |
+An empty list implies that every instance of the resource is matched.
+
Level defines the amount of information logged during auditing
+ ## `ObjectReference` {#audit-k8s-io-v1-ObjectReference} - - **Appears in:** + - [Event](#audit-k8s-io-v1-Event) -ObjectReference contains enough information to let you inspect or modify the referred object. +ObjectReference contains enough information to let you inspect or modify the referred object.
+| Field | Description |
|---|---|
resourcestring
|
- No description provided. - | + No description provided.
namespacestring
|
- No description provided. - | + No description provided.
namestring
|
- No description provided. - | + No description provided.
uid- k8s.io/apimachinery/pkg/types.UID
+k8s.io/apimachinery/pkg/types.UID
|
- No description provided. - | + No description provided.
apiGroupstring
|
- APIGroup is the name of the API group that contains the referred object. -The empty string represents the core API group. | +
apiVersionstring
|
- APIVersion is the version of the API group that contains the referred object. | +
resourceVersionstring
|
- No description provided. - | + No description provided.
subresourcestring
|
- No description provided. - | + No description provided.
PolicyRule maps requests based off metadata to an audit Level. +Requests must match the rules of every field (an intersection of rules).
+| Field | Description |
|---|---|
level [Required]Level
|
- The Level that requests matching this rule are recorded at. | +
users[]string
|
- The users (by authenticated user name) this rule applies to. -An empty list implies every user. | +
userGroups[]string
|
- The user groups this rule applies to. A user is considered matching
+ The user groups this rule applies to. A user is considered matching if it is a member of any of the UserGroups. -An empty list implies every user group. |
+An empty list implies every user group.
+
verbs[]string
|
- The verbs that match this rule. -An empty list implies every verb. | +
resources[]GroupResources
|
- Resources that this rule matches. An empty list implies all kinds in all API groups. | +
namespaces[]string
|
- Namespaces that this rule matches. -The empty string "" matches non-namespaced resources. -An empty list implies every namespace. | +
nonResourceURLs[]string
|
- NonResourceURLs is a set of URL paths that should be audited.
-∗s are allowed, but only as the full, final step in the path.
+ NonResourceURLs is a set of URL paths that should be audited. +s are allowed, but only as the full, final step in the path. Examples: - "/metrics" - Log requests for apiserver metrics - "/healthz∗" - Log all health checks |
+"/metrics" - Log requests for apiserver metrics
+"/healthz" - Log all health checks
+
omitStages[]Stage
|
- OmitStages is a list of stages for which no events are created. Note that this can also
+ OmitStages is a list of stages for which no events are created. Note that this can also be specified policy wide in which case the union of both are omitted. -An empty list means no restrictions will apply. |
+An empty list means no restrictions will apply.
+
omitManagedFieldsbool
|
- OmitManagedFields indicates whether to omit the managed fields of the request
-and response bodies from being written to the API audit log.
-- a value of 'true' will drop the managed fields from the API audit log
-- a value of 'false' indicates that the managed fileds should be included
- in the API audit log
+ OmitManagedFields indicates whether to omit the managed fields of the request +and response bodies from being written to the API audit log. +
|
+Policy.OmitManagedFields will stand.
+
+
Stage defines the stages in request handling that audit events may be generated.
+ diff --git a/content/en/docs/reference/config-api/apiserver-config.v1.md b/content/en/docs/reference/config-api/apiserver-config.v1.md index 7767a4e406..dcb903e848 100644 --- a/content/en/docs/reference/config-api/apiserver-config.v1.md +++ b/content/en/docs/reference/config-api/apiserver-config.v1.md @@ -4,7 +4,8 @@ content_type: tool-reference package: apiserver.config.k8s.io/v1 auto_generated: true --- -Package v1 is the v1 version of the API. +Package v1 is the v1 version of the API.
+ ## Resource Types @@ -17,10 +18,9 @@ Package v1 is the v1 version of the API. +AdmissionConfiguration provides versioned configuration for admission controllers.
-AdmissionConfiguration provides versioned configuration for admission controllers. -| Field | Description |
|---|---|
apiVersionstring | apiserver.config.k8s.io/v1 |
kindstring | AdmissionConfiguration |
plugins[]AdmissionPluginConfiguration
|
- Plugins allows specifying a configuration per admission control plugin. | +
AdmissionPluginConfiguration provides the configuration for a single plug-in.
+| Field | Description |
|---|---|
name [Required]string
|
- Name is the name of the admission controller. -It must match the registered admission plugin name. | +
pathstring
|
- Path is the path to a configuration file that contains the plugin's -configuration | +
configuration- k8s.io/apimachinery/pkg/runtime.Unknown
+k8s.io/apimachinery/pkg/runtime.Unknown
|
- Configuration is an embedded configuration object to be used as the plugin's -configuration. If present, it will be used instead of the path to the configuration file. | +
Package v1 is the v1 version of the API.
+ ## Resource Types @@ -17,10 +18,9 @@ Package v1 is the v1 version of the API. +WebhookAdmission provides configuration for the webhook admission controller.
-WebhookAdmission provides configuration for the webhook admission controller. -| Field | Description |
|---|---|
apiVersionstring | apiserver.config.k8s.io/v1 |
kindstring | WebhookAdmission |
kubeConfigFile [Required]string
|
- KubeConfigFile is the path to the kubeconfig file. | +
ExecCredential is used by exec-based plugins to communicate credentials to +HTTP transports.
-ExecCredential is used by exec-based plugins to communicate credentials to -HTTP transports. -| Field | Description |
|---|---|
apiVersionstring | client.authentication.k8s.io/v1 |
kindstring | ExecCredential |
spec [Required]ExecCredentialSpec
|
- Spec holds information passed to the plugin by the transport. | +
statusExecCredentialStatus
|
- Status is filled in by the plugin and holds the credentials that the transport -should use to contact the API. | +
Cluster contains information to allow an exec plugin to communicate +with the kubernetes cluster being authenticated to.
+To ensure that this struct contains everything someone would need to communicate with a kubernetes cluster (just like they would via a kubeconfig), the fields -should shadow "k8s.io/client-go/tools/clientcmd/api/v1".Cluster, with the exception -of CertificateAuthority, since CA data will always be passed to the plugin as bytes. +should shadow "k8s.io/client-go/tools/clientcmd/api/v1".Cluster, with the exception +of CertificateAuthority, since CA data will always be passed to the plugin as bytes.
+| Field | Description |
|---|---|
server [Required]string
|
- Server is the address of the kubernetes cluster (https://hostname:port). | +
tls-server-namestring
|
- TLSServerName is passed to the server for SNI and is used in the client to
+ TLSServerName is passed to the server for SNI and is used in the client to check server certificates against. If ServerName is empty, the hostname -used to contact the server is used. |
+used to contact the server is used.
+
insecure-skip-tls-verifybool
|
- InsecureSkipTLSVerify skips the validity check for the server's certificate. -This will make your HTTPS connections insecure. | +
certificate-authority-data[]byte
|
- CAData contains PEM-encoded certificate authority certificates. -If empty, system roots should be used. | +
proxy-urlstring
|
- ProxyURL is the URL to the proxy to be used for all requests to this -cluster. | +
config- k8s.io/apimachinery/pkg/runtime.RawExtension
+k8s.io/apimachinery/pkg/runtime.RawExtension
|
- Config holds additional config data that is specific to the exec
-plugin with regards to the cluster being authenticated to.
-
-This data is sourced from the clientcmd Cluster object's
-extensions[client.authentication.k8s.io/exec] field:
-
-clusters:
-- name: my-cluster
- cluster:
- ...
- extensions:
- - name: client.authentication.k8s.io/exec # reserved extension name for per cluster exec config
- extension:
- audience: 06e3fbd18de8 # arbitrary config
-
-In some environments, the user config may be exactly the same across many clusters
+ Config holds additional config data that is specific to the exec +plugin with regards to the cluster being authenticated to. +This data is sourced from the clientcmd Cluster object's +extensions[client.authentication.k8s.io/exec] field: +clusters: +
In some environments, the user config may be exactly the same across many clusters (i.e. call this exec plugin) minus some details that are specific to each cluster such as the audience. This field allows the per cluster config to be directly specified with the cluster info. Using this field to store secret data is not recommended as one of the prime benefits of exec plugins is that no secrets need -to be stored directly in the kubeconfig. |
+to be stored directly in the kubeconfig.
+
ExecCredentialSpec holds request and runtime specific information provided by +the transport.
+| Field | Description |
|---|---|
clusterCluster
|
- Cluster contains information to allow an exec plugin to communicate with the
+ Cluster contains information to allow an exec plugin to communicate with the kubernetes cluster being authenticated to. Note that Cluster is non-nil only when provideClusterInfo is set to true in the exec provider config (i.e., -ExecConfig.ProvideClusterInfo). |
+ExecConfig.ProvideClusterInfo).
+
interactive [Required]bool
|
- Interactive declares whether stdin has been passed to this exec plugin. | +
ExecCredentialStatus holds credentials for the transport to use.
+Token and ClientKeyData are sensitive fields. This data should only be transmitted in-memory between client and exec plugin process. Exec plugin -itself should at least be protected via file permissions. +itself should at least be protected via file permissions.
+| Field | Description |
|---|---|
expirationTimestampmeta/v1.Time
|
- ExpirationTimestamp indicates a time when the provided credentials expire. | +
token [Required]string
|
- Token is a bearer token used by the client for request authentication. | +
clientCertificateData [Required]string
|
- PEM-encoded client TLS certificates (including intermediates, if any). | +
clientKeyData [Required]string
|
- PEM-encoded private key for the above certificate. | +
ExecCredential is used by exec-based plugins to communicate credentials to +HTTP transports.
+| Field | Description |
- Spec holds information passed to the plugin by the transport.
+ Spec holds information passed to the plugin by the transport. |
|---|---|
statusExecCredentialStatus
|
- Status is filled in by the plugin and holds the credentials that the transport
-should use to contact the API.
+ Status is filled in by the plugin and holds the credentials that the transport +should use to contact the API. |
| Field | Description |
- Server is the address of the kubernetes cluster (https://hostname:port).
+ Server is the address of the kubernetes cluster (https://hostname:port). |
|---|---|
tls-server-namestring
|
- TLSServerName is passed to the server for SNI and is used in the client to
+ TLSServerName is passed to the server for SNI and is used in the client to check server certificates against. If ServerName is empty, the hostname -used to contact the server is used. +used to contact the server is used. |
insecure-skip-tls-verifybool
|
- InsecureSkipTLSVerify skips the validity check for the server's certificate.
-This will make your HTTPS connections insecure.
+ InsecureSkipTLSVerify skips the validity check for the server's certificate. +This will make your HTTPS connections insecure. |
certificate-authority-data[]byte
|
- CAData contains PEM-encoded certificate authority certificates.
-If empty, system roots should be used.
+ CAData contains PEM-encoded certificate authority certificates. +If empty, system roots should be used. |
proxy-urlstring
|
- ProxyURL is the URL to the proxy to be used for all requests to this
-cluster.
+ ProxyURL is the URL to the proxy to be used for all requests to this +cluster. |
config- k8s.io/apimachinery/pkg/runtime.RawExtension
+k8s.io/apimachinery/pkg/runtime.RawExtension
|
- Config holds additional config data that is specific to the exec
-plugin with regards to the cluster being authenticated to.
-
-This data is sourced from the clientcmd Cluster object's
-extensions[client.authentication.k8s.io/exec] field:
-
-clusters:
-- name: my-cluster
- cluster:
- ...
- extensions:
- - name: client.authentication.k8s.io/exec # reserved extension name for per cluster exec config
- extension:
- audience: 06e3fbd18de8 # arbitrary config
-
-In some environments, the user config may be exactly the same across many clusters
+ Config holds additional config data that is specific to the exec +plugin with regards to the cluster being authenticated to. +This data is sourced from the clientcmd Cluster object's +extensions[client.authentication.k8s.io/exec] field: +clusters: +
In some environments, the user config may be exactly the same across many clusters (i.e. call this exec plugin) minus some details that are specific to each cluster such as the audience. This field allows the per cluster config to be directly specified with the cluster info. Using this field to store secret data is not recommended as one of the prime benefits of exec plugins is that no secrets need -to be stored directly in the kubeconfig. +to be stored directly in the kubeconfig. |
| Field | Description |
- Cluster contains information to allow an exec plugin to communicate with the
+ Cluster contains information to allow an exec plugin to communicate with the kubernetes cluster being authenticated to. Note that Cluster is non-nil only when provideClusterInfo is set to true in the exec provider config (i.e., -ExecConfig.ProvideClusterInfo). +ExecConfig.ProvideClusterInfo). |
|---|---|
interactive [Required]bool
|
- Interactive declares whether stdin has been passed to this exec plugin.
+ Interactive declares whether stdin has been passed to this exec plugin. |
| Field | Description |
- ExpirationTimestamp indicates a time when the provided credentials expire.
+ ExpirationTimestamp indicates a time when the provided credentials expire. |
|---|---|
token [Required]string
|
- Token is a bearer token used by the client for request authentication.
+ Token is a bearer token used by the client for request authentication. |
clientCertificateData [Required]string
|
- PEM-encoded client TLS certificates (including intermediates, if any).
+ PEM-encoded client TLS certificates (including intermediates, if any). |
clientKeyData [Required]string
|
- PEM-encoded private key for the above certificate.
+ PEM-encoded private key for the above certificate. |
| Field | Description |
- featureGates is a map of feature names to bools that enable or disable alpha/experimental features.
+ featureGates is a map of feature names to bools that enable or disable alpha/experimental features. |
|---|---|
bindAddress [Required]string
|
- bindAddress is the IP address for the proxy server to serve on (set to 0.0.0.0
-for all interfaces)
+ bindAddress is the IP address for the proxy server to serve on (set to 0.0.0.0 +for all interfaces) |
healthzBindAddress [Required]string
|
- healthzBindAddress is the IP address and port for the health check server to serve on,
-defaulting to 0.0.0.0:10256
+ healthzBindAddress is the IP address and port for the health check server to serve on, +defaulting to 0.0.0.0:10256 |
metricsBindAddress [Required]string
|
- metricsBindAddress is the IP address and port for the metrics server to serve on,
-defaulting to 127.0.0.1:10249 (set to 0.0.0.0 for all interfaces)
+ metricsBindAddress is the IP address and port for the metrics server to serve on, +defaulting to 127.0.0.1:10249 (set to 0.0.0.0 for all interfaces) |
bindAddressHardFail [Required]bool
|
- bindAddressHardFail, if true, kube-proxy will treat failure to bind to a port as fatal and exit
+ bindAddressHardFail, if true, kube-proxy will treat failure to bind to a port as fatal and exit |
enableProfiling [Required]bool
|
- enableProfiling enables profiling via web interface on /debug/pprof handler.
-Profiling handlers will be handled by metrics server.
+ enableProfiling enables profiling via web interface on /debug/pprof handler. +Profiling handlers will be handled by metrics server. |
clusterCIDR [Required]string
|
- clusterCIDR is the CIDR range of the pods in the cluster. It is used to
+ clusterCIDR is the CIDR range of the pods in the cluster. It is used to bridge traffic coming from outside of the cluster. If not provided, -no off-cluster bridging will be performed. +no off-cluster bridging will be performed. |
hostnameOverride [Required]string
|
- hostnameOverride, if non-empty, will be used as the identity instead of the actual hostname.
+ hostnameOverride, if non-empty, will be used as the identity instead of the actual hostname. |
clientConnection [Required]ClientConnectionConfiguration
|
- clientConnection specifies the kubeconfig file and client connection settings for the proxy
-server to use when communicating with the apiserver.
+ clientConnection specifies the kubeconfig file and client connection settings for the proxy +server to use when communicating with the apiserver. |
iptables [Required]KubeProxyIPTablesConfiguration
|
- iptables contains iptables-related configuration options.
+ iptables contains iptables-related configuration options. |
ipvs [Required]KubeProxyIPVSConfiguration
|
- ipvs contains ipvs-related configuration options.
+ ipvs contains ipvs-related configuration options. |
oomScoreAdj [Required]int32
|
- oomScoreAdj is the oom-score-adj value for kube-proxy process. Values must be within
-the range [-1000, 1000]
+ oomScoreAdj is the oom-score-adj value for kube-proxy process. Values must be within +the range [-1000, 1000] |
mode [Required]ProxyMode
|
- mode specifies which proxy mode to use.
+ mode specifies which proxy mode to use. |
portRange [Required]string
|
- portRange is the range of host ports (beginPort-endPort, inclusive) that may be consumed
-in order to proxy service traffic. If unspecified (0-0) then ports will be randomly chosen.
+ portRange is the range of host ports (beginPort-endPort, inclusive) that may be consumed +in order to proxy service traffic. If unspecified (0-0) then ports will be randomly chosen. |
udpIdleTimeout [Required]- meta/v1.Duration
+meta/v1.Duration
|
- udpIdleTimeout is how long an idle UDP connection will be kept open (e.g. '250ms', '2s').
-Must be greater than 0. Only applicable for proxyMode=userspace.
+ udpIdleTimeout is how long an idle UDP connection will be kept open (e.g. '250ms', '2s'). +Must be greater than 0. Only applicable for proxyMode=userspace. |
conntrack [Required]KubeProxyConntrackConfiguration
|
- conntrack contains conntrack-related configuration options.
+ conntrack contains conntrack-related configuration options. |
configSyncPeriod [Required]- meta/v1.Duration
+meta/v1.Duration
|
- configSyncPeriod is how often configuration from the apiserver is refreshed. Must be greater
-than 0.
+ configSyncPeriod is how often configuration from the apiserver is refreshed. Must be greater +than 0. |
nodePortAddresses [Required][]string
|
- nodePortAddresses is the --nodeport-addresses value for kube-proxy process. Values must be valid
+ nodePortAddresses is the --nodeport-addresses value for kube-proxy process. Values must be valid IP blocks. These values are as a parameter to select the interfaces where nodeport works. In case someone would like to expose a service on localhost for local visit and some other interfaces for particular purpose, a list of IP blocks would do that. -If set it to "127.0.0.0/8", kube-proxy will only select the loopback interface for NodePort. +If set it to "127.0.0.0/8", kube-proxy will only select the loopback interface for NodePort. If set it to a non-zero IP block, kube-proxy will filter that down to just the IPs that applied to the node. -An empty string slice is meant to select all network interfaces. +An empty string slice is meant to select all network interfaces. |
winkernel [Required]KubeProxyWinkernelConfiguration
|
- winkernel contains winkernel-related configuration options.
+ winkernel contains winkernel-related configuration options. |
showHiddenMetricsForVersion [Required]string
|
- ShowHiddenMetricsForVersion is the version for which you want to show hidden metrics.
+ ShowHiddenMetricsForVersion is the version for which you want to show hidden metrics. |
detectLocalMode [Required]LocalMode
|
- DetectLocalMode determines mode to use for detecting local traffic, defaults to LocalModeClusterCIDR
+ DetectLocalMode determines mode to use for detecting local traffic, defaults to LocalModeClusterCIDR |
| Field | Description |
- maxPerCore is the maximum number of NAT connections to track
-per CPU core (0 to leave the limit as-is and ignore min).
+ maxPerCore is the maximum number of NAT connections to track +per CPU core (0 to leave the limit as-is and ignore min). |
|---|---|
min [Required]int32
|
- min is the minimum value of connect-tracking records to allocate,
-regardless of conntrackMaxPerCore (set maxPerCore=0 to leave the limit as-is).
+ min is the minimum value of connect-tracking records to allocate, +regardless of conntrackMaxPerCore (set maxPerCore=0 to leave the limit as-is). |
tcpEstablishedTimeout [Required]- meta/v1.Duration
+meta/v1.Duration
|
- tcpEstablishedTimeout is how long an idle TCP connection will be kept open
-(e.g. '2s'). Must be greater than 0 to set.
+ tcpEstablishedTimeout is how long an idle TCP connection will be kept open +(e.g. '2s'). Must be greater than 0 to set. |
tcpCloseWaitTimeout [Required]- meta/v1.Duration
+meta/v1.Duration
|
- tcpCloseWaitTimeout is how long an idle conntrack entry
+ tcpCloseWaitTimeout is how long an idle conntrack entry in CLOSE_WAIT state will remain in the conntrack -table. (e.g. '60s'). Must be greater than 0 to set. +table. (e.g. '60s'). Must be greater than 0 to set. |
| Field | Description |
- masqueradeBit is the bit of the iptables fwmark space to use for SNAT if using
-the pure iptables proxy mode. Values must be within the range [0, 31].
+ masqueradeBit is the bit of the iptables fwmark space to use for SNAT if using +the pure iptables proxy mode. Values must be within the range [0, 31]. |
|---|---|
masqueradeAll [Required]bool
|
- masqueradeAll tells kube-proxy to SNAT everything if using the pure iptables proxy mode.
+ masqueradeAll tells kube-proxy to SNAT everything if using the pure iptables proxy mode. |
syncPeriod [Required]- meta/v1.Duration
+meta/v1.Duration
|
- syncPeriod is the period that iptables rules are refreshed (e.g. '5s', '1m',
-'2h22m'). Must be greater than 0.
+ syncPeriod is the period that iptables rules are refreshed (e.g. '5s', '1m', +'2h22m'). Must be greater than 0. |
minSyncPeriod [Required]- meta/v1.Duration
+meta/v1.Duration
|
- minSyncPeriod is the minimum period that iptables rules are refreshed (e.g. '5s', '1m',
-'2h22m').
+ minSyncPeriod is the minimum period that iptables rules are refreshed (e.g. '5s', '1m', +'2h22m'). |
| Field | Description |
|---|---|
syncPeriod [Required]- meta/v1.Duration
+meta/v1.Duration
|
- syncPeriod is the period that ipvs rules are refreshed (e.g. '5s', '1m',
-'2h22m'). Must be greater than 0.
+ syncPeriod is the period that ipvs rules are refreshed (e.g. '5s', '1m', +'2h22m'). Must be greater than 0. |
minSyncPeriod [Required]- meta/v1.Duration
+meta/v1.Duration
|
- minSyncPeriod is the minimum period that ipvs rules are refreshed (e.g. '5s', '1m',
-'2h22m').
+ minSyncPeriod is the minimum period that ipvs rules are refreshed (e.g. '5s', '1m', +'2h22m'). |
scheduler [Required]string
|
- ipvs scheduler
+ ipvs scheduler |
excludeCIDRs [Required][]string
|
- excludeCIDRs is a list of CIDR's which the ipvs proxier should not touch
-when cleaning up ipvs services.
+ excludeCIDRs is a list of CIDR's which the ipvs proxier should not touch +when cleaning up ipvs services. |
strictARP [Required]bool
|
- strict ARP configure arp_ignore and arp_announce to avoid answering ARP queries
-from kube-ipvs0 interface
+ strict ARP configure arp_ignore and arp_announce to avoid answering ARP queries +from kube-ipvs0 interface |
tcpTimeout [Required]- meta/v1.Duration
+meta/v1.Duration
|
- tcpTimeout is the timeout value used for idle IPVS TCP sessions.
-The default value is 0, which preserves the current timeout value on the system.
+ tcpTimeout is the timeout value used for idle IPVS TCP sessions. +The default value is 0, which preserves the current timeout value on the system. |
tcpFinTimeout [Required]- meta/v1.Duration
+meta/v1.Duration
|
- tcpFinTimeout is the timeout value used for IPVS TCP sessions after receiving a FIN.
-The default value is 0, which preserves the current timeout value on the system.
+ tcpFinTimeout is the timeout value used for IPVS TCP sessions after receiving a FIN. +The default value is 0, which preserves the current timeout value on the system. |
udpTimeout [Required]- meta/v1.Duration
+meta/v1.Duration
|
- udpTimeout is the timeout value used for IPVS UDP packets.
-The default value is 0, which preserves the current timeout value on the system.
+ udpTimeout is the timeout value used for IPVS UDP packets. +The default value is 0, which preserves the current timeout value on the system. |
| Field | Description |
- networkName is the name of the network kube-proxy will use
-to create endpoints and policies
+ networkName is the name of the network kube-proxy will use +to create endpoints and policies |
|---|---|
sourceVip [Required]string
|
- sourceVip is the IP address of the source VIP endoint used for
-NAT when loadbalancing
+ sourceVip is the IP address of the source VIP endoint used for +NAT when loadbalancing |
enableDSR [Required]bool
|
- enableDSR tells kube-proxy whether HNS policies should be created
-with DSR
+ enableDSR tells kube-proxy whether HNS policies should be created +with DSR |
| Field | Description |
- kubeconfig is the path to a KubeConfig file.
+ kubeconfig is the path to a KubeConfig file. |
|---|---|
acceptContentTypes [Required]string
|
- acceptContentTypes defines the Accept header sent by clients when connecting to a server, overriding the
+ acceptContentTypes defines the Accept header sent by clients when connecting to a server, overriding the default value of 'application/json'. This field will control all connections to the server used by a particular -client. +client. |
contentType [Required]string
|
- contentType is the content type used when sending data to the server from this client.
+ contentType is the content type used when sending data to the server from this client. |
qps [Required]float32
|
- qps controls the number of queries per second allowed for this connection.
+ qps controls the number of queries per second allowed for this connection. |
burst [Required]int32
|
- burst allows extra queries to accumulate when a client is exceeding its rate.
+ burst allows extra queries to accumulate when a client is exceeding its rate. + |
+
DebuggingConfiguration holds configuration for Debugging related features.
+ + +| Field | Description |
|---|---|
enableProfiling [Required]+ bool
+ |
+
+ enableProfiling enables profiling via web interface host:port/debug/pprof/ + |
+
enableContentionProfiling [Required]+ bool
+ |
+
+ enableContentionProfiling enables lock contention profiling, if +enableProfiling is true. |
| Field | Description |
- [Experimental] JSON contains options for logging format "json".
+ [Experimental] JSON contains options for logging format "json". |
@@ -542,7 +601,9 @@ FormatOptions contains options for the different logging formats.
- [FormatOptions](#FormatOptions)
-JSONOptions contains options for logging format "json".
+
+
|---|
| Field | Description |
- [Experimental] SplitStream redirects error messages to stderr while
+ [Experimental] SplitStream redirects error messages to stderr while info messages go to stdout, with buffering. The default is to write -both to stdout, without buffering. +both to stdout, without buffering. |
|---|---|
infoBufferSize [Required]k8s.io/apimachinery/pkg/api/resource.QuantityValue
|
- [Experimental] InfoBufferSize sets the size of the info stream when
-using split streams. The default is zero, which disables buffering.
+ [Experimental] InfoBufferSize sets the size of the info stream when +using split streams. The default is zero, which disables buffering. + |
+
LeaderElectionConfiguration defines the configuration of leader election +clients for components that can run with leader election enabled.
+ + +| Field | Description |
|---|---|
leaderElect [Required]+ bool
+ |
+
+ leaderElect enables a leader election client to gain leadership +before executing the main loop. Enable this when running replicated +components for high availability. + |
+
leaseDuration [Required]+ meta/v1.Duration
+ |
+
+ leaseDuration is the duration that non-leader candidates will wait +after observing a leadership renewal until attempting to acquire +leadership of a led but unrenewed leader slot. This is effectively the +maximum duration that a leader can be stopped before it is replaced +by another candidate. This is only applicable if leader election is +enabled. + |
+
renewDeadline [Required]+ meta/v1.Duration
+ |
+
+ renewDeadline is the interval between attempts by the acting master to +renew a leadership slot before it stops leading. This must be less +than or equal to the lease duration. This is only applicable if leader +election is enabled. + |
+
retryPeriod [Required]+ meta/v1.Duration
+ |
+
+ retryPeriod is the duration the clients should wait between attempting +acquisition and renewal of a leadership. This is only applicable if +leader election is enabled. + |
+
resourceLock [Required]+ string
+ |
+
+ resourceLock indicates the resource object type that will be used to lock +during leader election cycles. + |
+
resourceName [Required]+ string
+ |
+
+ resourceName indicates the name of resource object that will be used to lock +during leader election cycles. + |
+
resourceNamespace [Required]+ string
+ |
+
+ resourceName indicates the namespace of resource object that will be used to lock +during leader election cycles. + |
+
LoggingConfiguration contains logging options +Refer Logs Options for more information.
+ + +| Field | Description |
|---|---|
format [Required]+ string
+ |
+
+ Format Flag specifies the structure of log messages.
+default value of format is |
+
flushFrequency [Required]+ time.Duration
+ |
+
+ Maximum number of seconds between log flushes. Ignored if the +selected logging backend writes log messages without buffering. + |
+
verbosity [Required]+ uint32
+ |
+
+ Verbosity is the threshold that determines which log messages are +logged. Default is zero which logs only the most important +messages. Higher values enable additional messages. Error messages +are always logged. + |
+
vmodule [Required]+ VModuleConfiguration
+ |
+
+ VModule overrides the verbosity threshold for individual files. +Only supported for "text" log format. + |
+
sanitization [Required]+ bool
+ |
+
+ [Experimental] When enabled prevents logging of fields tagged as sensitive (passwords, keys, tokens). +Runtime log sanitization may introduce significant computation overhead and therefore should not be enabled in production.`) + |
+
options [Required]+ FormatOptions
+ |
+
+ [Experimental] Options holds additional parameters that are specific +to the different logging formats. Only the options for the selected +format get used, but all of them get validated. |
| Field | Description |
|---|---|
kubeconfig [Required]+ string
+ |
+
+ kubeconfig is the path to a KubeConfig file. + |
+
acceptContentTypes [Required]+ string
+ |
+
+ acceptContentTypes defines the Accept header sent by clients when connecting to a server, overriding the +default value of 'application/json'. This field will control all connections to the server used by a particular +client. + |
+
contentType [Required]+ string
+ |
+
+ contentType is the content type used when sending data to the server from this client. + |
+
qps [Required]+ float32
+ |
+
+ qps controls the number of queries per second allowed for this connection. + |
+
burst [Required]+ int32
+ |
+
+ burst allows extra queries to accumulate when a client is exceeding its rate. + |
+
DebuggingConfiguration holds configuration for Debugging related features.
+ + +| Field | Description |
|---|---|
enableProfiling [Required]+ bool
+ |
+
+ enableProfiling enables profiling via web interface host:port/debug/pprof/ + |
+
enableContentionProfiling [Required]+ bool
+ |
+
+ enableContentionProfiling enables lock contention profiling, if +enableProfiling is true. + |
+
FormatOptions contains options for the different logging formats.
+ + +| Field | Description |
|---|---|
json [Required]+ JSONOptions
+ |
+
+ [Experimental] JSON contains options for logging format "json". + |
+
JSONOptions contains options for logging format "json".
+ + +| Field | Description |
|---|---|
splitStream [Required]+ bool
+ |
+
+ [Experimental] SplitStream redirects error messages to stderr while +info messages go to stdout, with buffering. The default is to write +both to stdout, without buffering. + |
+
infoBufferSize [Required]+ k8s.io/apimachinery/pkg/api/resource.QuantityValue
+ |
+
+ [Experimental] InfoBufferSize sets the size of the info stream when +using split streams. The default is zero, which disables buffering. + |
+
LeaderElectionConfiguration defines the configuration of leader election +clients for components that can run with leader election enabled.
+ + +| Field | Description |
|---|---|
leaderElect [Required]+ bool
+ |
+
+ leaderElect enables a leader election client to gain leadership +before executing the main loop. Enable this when running replicated +components for high availability. + |
+
leaseDuration [Required]+ meta/v1.Duration
+ |
+
+ leaseDuration is the duration that non-leader candidates will wait +after observing a leadership renewal until attempting to acquire +leadership of a led but unrenewed leader slot. This is effectively the +maximum duration that a leader can be stopped before it is replaced +by another candidate. This is only applicable if leader election is +enabled. + |
+
renewDeadline [Required]+ meta/v1.Duration
+ |
+
+ renewDeadline is the interval between attempts by the acting master to +renew a leadership slot before it stops leading. This must be less +than or equal to the lease duration. This is only applicable if leader +election is enabled. + |
+
retryPeriod [Required]+ meta/v1.Duration
+ |
+
+ retryPeriod is the duration the clients should wait between attempting +acquisition and renewal of a leadership. This is only applicable if +leader election is enabled. + |
+
resourceLock [Required]+ string
+ |
+
+ resourceLock indicates the resource object type that will be used to lock +during leader election cycles. + |
+
resourceName [Required]+ string
+ |
+
+ resourceName indicates the name of resource object that will be used to lock +during leader election cycles. + |
+
resourceNamespace [Required]+ string
+ |
+
+ resourceName indicates the namespace of resource object that will be used to lock +during leader election cycles. + |
+
LoggingConfiguration contains logging options +Refer Logs Options for more information.
+ + +| Field | Description |
|---|---|
format [Required]+ string
+ |
+
+ Format Flag specifies the structure of log messages.
+default value of format is |
+
flushFrequency [Required]+ time.Duration
+ |
+
+ Maximum number of seconds between log flushes. Ignored if the +selected logging backend writes log messages without buffering. + |
+
verbosity [Required]+ uint32
+ |
+
+ Verbosity is the threshold that determines which log messages are +logged. Default is zero which logs only the most important +messages. Higher values enable additional messages. Error messages +are always logged. + |
+
vmodule [Required]+ VModuleConfiguration
+ |
+
+ VModule overrides the verbosity threshold for individual files. +Only supported for "text" log format. + |
+
sanitization [Required]+ bool
+ |
+
+ [Experimental] When enabled prevents logging of fields tagged as sensitive (passwords, keys, tokens). +Runtime log sanitization may introduce significant computation overhead and therefore should not be enabled in production.`) + |
+
options [Required]+ FormatOptions
+ |
+
+ [Experimental] Options holds additional parameters that are specific +to the different logging formats. Only the options for the selected +format get used, but all of them get validated. + |
+
VModuleConfiguration is a collection of individual file names or patterns +and the corresponding verbosity threshold.
+ + + + + + ## `DefaultPreemptionArgs` {#kubescheduler-config-k8s-io-v1beta2-DefaultPreemptionArgs} +DefaultPreemptionArgs holds arguments used to configure the +DefaultPreemption plugin.
-DefaultPreemptionArgs holds arguments used to configure the -DefaultPreemption plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta2 |
kindstring | DefaultPreemptionArgs |
minCandidateNodesPercentage [Required]int32
|
- MinCandidateNodesPercentage is the minimum number of candidates to
+ MinCandidateNodesPercentage is the minimum number of candidates to shortlist when dry running preemption as a percentage of number of nodes. Must be in the range [0, 100]. Defaults to 10% of the cluster size if -unspecified. |
+unspecified.
+
minCandidateNodesAbsolute [Required]int32
|
- MinCandidateNodesAbsolute is the absolute minimum number of candidates to
+ MinCandidateNodesAbsolute is the absolute minimum number of candidates to shortlist. The likely number of candidates enumerated for dry running preemption is given by the formula: -numCandidates = max(numNodes ∗ minCandidateNodesPercentage, minCandidateNodesAbsolute) -We say "likely" because there are other factors such as PDB violations +numCandidates = max(numNodes * minCandidateNodesPercentage, minCandidateNodesAbsolute) +We say "likely" because there are other factors such as PDB violations that play a role in the number of candidates shortlisted. Must be at least -0 nodes. Defaults to 100 nodes if unspecified. |
+0 nodes. Defaults to 100 nodes if unspecified.
+
InterPodAffinityArgs holds arguments used to configure the InterPodAffinity plugin.
-InterPodAffinityArgs holds arguments used to configure the InterPodAffinity plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta2 |
kindstring | InterPodAffinityArgs |
hardPodAffinityWeight [Required]int32
|
- HardPodAffinityWeight is the scoring weight for existing pods with a -matching hard affinity to the incoming pod. | +
KubeSchedulerConfiguration configures a scheduler
-KubeSchedulerConfiguration configures a scheduler -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta2 |
kindstring | KubeSchedulerConfiguration |
parallelism [Required]int32
|
- Parallelism defines the amount of parallelism in algorithms for scheduling a Pods. Must be greater than 0. Defaults to 16 | +
leaderElection [Required]LeaderElectionConfiguration
|
- LeaderElection defines the configuration of leader election client. | +
clientConnection [Required]ClientConnectionConfiguration
|
- ClientConnection specifies the kubeconfig file and client connection -settings for the proxy server to use when communicating with the apiserver. | +
healthzBindAddress [Required]string
|
- Note: Both HealthzBindAddress and MetricsBindAddress fields are deprecated.
+ Note: Both HealthzBindAddress and MetricsBindAddress fields are deprecated. Only empty address or port 0 is allowed. Anything else will fail validation. -HealthzBindAddress is the IP address and port for the health check server to serve on. |
+HealthzBindAddress is the IP address and port for the health check server to serve on.
+
metricsBindAddress [Required]string
|
- MetricsBindAddress is the IP address and port for the metrics server to serve on. | +
DebuggingConfiguration [Required]DebuggingConfiguration
|
(Members of DebuggingConfiguration are embedded into this type.)
- DebuggingConfiguration holds configuration for Debugging related features
-TODO: We might wanna make this a substruct like Debugging componentbaseconfigv1alpha1.DebuggingConfiguration |
+
percentageOfNodesToScore [Required]int32
|
- PercentageOfNodesToScore is the percentage of all nodes that once found feasible
+ PercentageOfNodesToScore is the percentage of all nodes that once found feasible for running a pod, the scheduler stops its search for more feasible nodes in the cluster. This helps improve scheduler's performance. Scheduler always tries to find -at least "minFeasibleNodesToFind" feasible nodes no matter what the value of this flag is. +at least "minFeasibleNodesToFind" feasible nodes no matter what the value of this flag is. Example: if the cluster size is 500 nodes and the value of this flag is 30, then scheduler stops finding further feasible nodes once it finds 150 feasible ones. When the value is 0, default percentage (5%--50% based on the size of the cluster) of the -nodes will be scored. |
+nodes will be scored.
+
podInitialBackoffSeconds [Required]int64
|
- PodInitialBackoffSeconds is the initial backoff for unschedulable pods.
+ PodInitialBackoffSeconds is the initial backoff for unschedulable pods. If specified, it must be greater than 0. If this value is null, the default value (1s) -will be used. |
+will be used.
+
podMaxBackoffSeconds [Required]int64
|
- PodMaxBackoffSeconds is the max backoff for unschedulable pods.
+ PodMaxBackoffSeconds is the max backoff for unschedulable pods. If specified, it must be greater than podInitialBackoffSeconds. If this value is null, -the default value (10s) will be used. |
+the default value (10s) will be used.
+
profiles [Required][]KubeSchedulerProfile
|
- Profiles are scheduling profiles that kube-scheduler supports. Pods can
+ Profiles are scheduling profiles that kube-scheduler supports. Pods can choose to be scheduled under a particular profile by setting its associated scheduler name. Pods that don't specify any scheduler name are scheduled -with the "default-scheduler" profile, if present here. |
+with the "default-scheduler" profile, if present here.
+
extenders [Required][]Extender
|
- Extenders are the list of scheduler extenders, each holding the values of how to communicate -with the extender. These extenders are shared by all scheduler profiles. | +
NodeAffinityArgs holds arguments to configure the NodeAffinity plugin.
-NodeAffinityArgs holds arguments to configure the NodeAffinity plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta2 |
kindstring | NodeAffinityArgs |
addedAffinitycore/v1.NodeAffinity
|
- AddedAffinity is applied to all Pods additionally to the NodeAffinity
+ AddedAffinity is applied to all Pods additionally to the NodeAffinity specified in the PodSpec. That is, Nodes need to satisfy AddedAffinity AND .spec.NodeAffinity. AddedAffinity is empty by default (all Nodes match). When AddedAffinity is used, some Pods with affinity requirements that match -a specific Node (such as Daemonset Pods) might remain unschedulable. |
+a specific Node (such as Daemonset Pods) might remain unschedulable.
+
NodeResourcesBalancedAllocationArgs holds arguments used to configure NodeResourcesBalancedAllocation plugin.
-NodeResourcesBalancedAllocationArgs holds arguments used to configure NodeResourcesBalancedAllocation plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta2 |
kindstring | NodeResourcesBalancedAllocationArgs |
resources [Required][]ResourceSpec
|
- Resources to be managed, the default is "cpu" and "memory" if not specified. | +
NodeResourcesFitArgs holds arguments used to configure the NodeResourcesFit plugin.
-NodeResourcesFitArgs holds arguments used to configure the NodeResourcesFit plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta2 |
kindstring | NodeResourcesFitArgs |
ignoredResources [Required][]string
|
- IgnoredResources is the list of resources that NodeResources fit filter -should ignore. This doesn't apply to scoring. | +
ignoredResourceGroups [Required][]string
|
- IgnoredResourceGroups defines the list of resource groups that NodeResources fit filter should ignore. -e.g. if group is ["example.com"], it will ignore all resource names that begin -with "example.com", such as "example.com/aaa" and "example.com/bbb". -A resource group name can't contain '/'. This doesn't apply to scoring. | +
scoringStrategy [Required]ScoringStrategy
|
- ScoringStrategy selects the node resource scoring strategy. -The default strategy is LeastAllocated with an equal "cpu" and "memory" weight. | +
PodTopologySpreadArgs holds arguments used to configure the PodTopologySpread plugin.
-PodTopologySpreadArgs holds arguments used to configure the PodTopologySpread plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta2 |
kindstring | PodTopologySpreadArgs |
defaultConstraints[]core/v1.TopologySpreadConstraint
|
- DefaultConstraints defines topology spread constraints to be applied to
-Pods that don't define any in `pod.spec.topologySpreadConstraints`.
-`.defaultConstraints[∗].labelSelectors` must be empty, as they are
+ DefaultConstraints defines topology spread constraints to be applied to
+Pods that don't define any in |
+When not empty, .defaultingType must be "List".
+
defaultingTypePodTopologySpreadConstraintsDefaulting
|
- DefaultingType determines how .defaultConstraints are deduced. Can be one -of "System" or "List". - -- "System": Use kubernetes defined constraints that spread Pods among - Nodes and Zones. -- "List": Use constraints defined in .defaultConstraints. - -Defaults to "List" if feature gate DefaultPodTopologySpread is disabled -and to "System" if enabled. | +
VolumeBindingArgs holds arguments used to configure the VolumeBinding plugin.
-VolumeBindingArgs holds arguments used to configure the VolumeBinding plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta2 |
kindstring | VolumeBindingArgs |
bindTimeoutSeconds [Required]int64
|
- BindTimeoutSeconds is the timeout in seconds in volume binding operation.
+ BindTimeoutSeconds is the timeout in seconds in volume binding operation. Value must be non-negative integer. The value zero indicates no waiting. -If this value is nil, the default value (600) will be used. |
+If this value is nil, the default value (600) will be used.
+
shape[]UtilizationShapePoint
|
- Shape specifies the points defining the score function shape, which is
+ Shape specifies the points defining the score function shape, which is used to score nodes based on the utilization of statically provisioned PVs. The utilization is calculated by dividing the total requested storage of the pod by the total capacity of feasible PVs on each node. Each point contains utilization (ranges from 0 to 100) and its associated score (ranges from 0 to 10). You can turn the priority by specifying different scores for different utilization numbers. -The default shape points are: -1) 0 for 0 utilization -2) 10 for 100 utilization -All points must be sorted in increasing order by utilization. |
+The default shape points are:
+
Extender holds the parameters used to communicate with the extender. If a verb is unspecified/empty, +it is assumed that the extender chose not to provide that extension.
+| Field | Description |
|---|---|
urlPrefix [Required]string
|
- URLPrefix at which the extender is available | +
filterVerb [Required]string
|
- Verb for the filter call, empty if not supported. This verb is appended to the URLPrefix when issuing the filter call to extender. | +
preemptVerb [Required]string
|
- Verb for the preempt call, empty if not supported. This verb is appended to the URLPrefix when issuing the preempt call to extender. | +
prioritizeVerb [Required]string
|
- Verb for the prioritize call, empty if not supported. This verb is appended to the URLPrefix when issuing the prioritize call to extender. | +
weight [Required]int64
|
- The numeric multiplier for the node scores that the prioritize call generates. -The weight should be a positive integer | +
bindVerb [Required]string
|
- Verb for the bind call, empty if not supported. This verb is appended to the URLPrefix when issuing the bind call to extender.
+ Verb for the bind call, empty if not supported. This verb is appended to the URLPrefix when issuing the bind call to extender. If this method is implemented by the extender, it is the extender's responsibility to bind the pod to apiserver. Only one extender -can implement this function. |
+can implement this function.
+
enableHTTPS [Required]bool
|
- EnableHTTPS specifies whether https should be used to communicate with the extender | +
tlsConfig [Required]ExtenderTLSConfig
|
- TLSConfig specifies the transport layer security config | +
httpTimeout [Required]- meta/v1.Duration
+meta/v1.Duration
|
- HTTPTimeout specifies the timeout duration for a call to the extender. Filter timeout fails the scheduling of the pod. Prioritize -timeout is ignored, k8s/other extenders priorities are used to select the node. | +
nodeCacheCapable [Required]bool
|
- NodeCacheCapable specifies that the extender is capable of caching node information,
+ NodeCacheCapable specifies that the extender is capable of caching node information, so the scheduler should only send minimal information about the eligible nodes -assuming that the extender already cached full details of all nodes in the cluster |
+assuming that the extender already cached full details of all nodes in the cluster
+
managedResources[]ExtenderManagedResource
|
- ManagedResources is a list of extended resources that are managed by -this extender. -- A pod will be sent to the extender on the Filter, Prioritize and Bind - (if the extender is the binder) phases iff the pod requests at least - one of the extended resources in this list. If empty or unspecified, - all pods will be sent to this extender. -- If IgnoredByScheduler is set to true for a resource, kube-scheduler - will skip checking the resource in predicates. | +
ignorable [Required]bool
|
- Ignorable specifies if the extender is ignorable, i.e. scheduling should not -fail when the extender returns an error or is not reachable. | +
ExtenderManagedResource describes the arguments of extended resources +managed by an extender.
+| Field | Description |
|---|---|
name [Required]string
|
- Name is the extended resource name. | +
ignoredByScheduler [Required]bool
|
- IgnoredByScheduler indicates whether kube-scheduler should ignore this -resource when applying predicates. | +
ExtenderTLSConfig contains settings to enable TLS with extender
+| Field | Description |
|---|---|
insecure [Required]bool
|
- Server should be accessed without verifying the TLS certificate. For testing only. | +
serverName [Required]string
|
- ServerName is passed to the server for SNI and is used in the client to check server
+ ServerName is passed to the server for SNI and is used in the client to check server certificates against. If ServerName is empty, the hostname used to contact the -server is used. |
+server is used.
+
certFile [Required]string
|
- Server requires TLS client certificate authentication | +
keyFile [Required]string
|
- Server requires TLS client certificate authentication | +
caFile [Required]string
|
- Trusted root certificates for server | +
certData [Required][]byte
|
- CertData holds PEM-encoded bytes (typically read from a client certificate file). -CertData takes precedence over CertFile | +
keyData [Required][]byte
|
- KeyData holds PEM-encoded bytes (typically read from a client certificate key file). -KeyData takes precedence over KeyFile | +
caData [Required][]byte
|
- CAData holds PEM-encoded bytes (typically read from a root certificates bundle). -CAData takes precedence over CAFile | +
KubeSchedulerProfile is a scheduling profile.
+| Field | Description |
|---|---|
schedulerName [Required]string
|
- SchedulerName is the name of the scheduler associated to this profile. -If SchedulerName matches with the pod's "spec.schedulerName", then the pod -is scheduled with this profile. | +
plugins [Required]Plugins
|
- Plugins specify the set of plugins that should be enabled or disabled.
+ Plugins specify the set of plugins that should be enabled or disabled. Enabled plugins are the ones that should be enabled in addition to the default plugins. Disabled plugins are any of the default plugins that should be disabled. When no enabled or disabled plugin is specified for an extension point, default plugins for that extension point will be used if there is any. If a QueueSort plugin is specified, the same QueueSort Plugin and -PluginConfig must be specified for all profiles. |
+PluginConfig must be specified for all profiles.
+
pluginConfig [Required][]PluginConfig
|
- PluginConfig is an optional set of custom plugin arguments for each plugin.
+ PluginConfig is an optional set of custom plugin arguments for each plugin. Omitting config args for a plugin is equivalent to using the default config -for that plugin. |
+for that plugin.
+
Plugin specifies a plugin name and its weight when applicable. Weight is used only for Score plugins.
+| Field | Description |
|---|---|
name [Required]string
|
- Name defines the name of plugin | +
weight [Required]int32
|
- Weight defines the weight of plugin, only used for Score plugins. | +
PluginConfig specifies arguments that should be passed to a plugin at the time of initialization. A plugin that is invoked at multiple extension points is initialized once. Args can have arbitrary structure. -It is up to the plugin to process these Args. +It is up to the plugin to process these Args.
+| Field | Description |
|---|---|
name [Required]string
|
- Name defines the name of plugin being configured | +
args [Required]- k8s.io/apimachinery/pkg/runtime.RawExtension
+k8s.io/apimachinery/pkg/runtime.RawExtension
|
- Args defines the arguments passed to the plugins at the time of initialization. Args can have arbitrary structure. | +
PluginSet specifies enabled and disabled plugins for an extension point. +If an array is empty, missing, or nil, default plugins at that extension point will be used.
+| Field | Description |
|---|---|
enabled [Required][]Plugin
|
- Enabled specifies plugins that should be enabled in addition to default plugins.
+ Enabled specifies plugins that should be enabled in addition to default plugins. If the default plugin is also configured in the scheduler config file, the weight of plugin will be overridden accordingly. -These are called after default plugins and in the same order specified here. |
+These are called after default plugins and in the same order specified here.
+
disabled [Required][]Plugin
|
- Disabled specifies default plugins that should be disabled. -When all default plugins need to be disabled, an array containing only one "∗" should be provided. | +
Plugins include multiple extension points. When specified, the list of plugins for a particular extension point are the only ones enabled. If an extension point is omitted from the config, then the default set of plugins is used for that extension point. Enabled plugins are called in the order specified here, after default plugins. If they need to -be invoked before default plugins, default plugins must be disabled and re-enabled here in desired order. +be invoked before default plugins, default plugins must be disabled and re-enabled here in desired order.
+| Field | Description |
|---|---|
queueSort [Required]PluginSet
|
- QueueSort is a list of plugins that should be invoked when sorting pods in the scheduling queue. | +
preFilter [Required]PluginSet
|
- PreFilter is a list of plugins that should be invoked at "PreFilter" extension point of the scheduling framework. | +
filter [Required]PluginSet
|
- Filter is a list of plugins that should be invoked when filtering out nodes that cannot run the Pod. | +
postFilter [Required]PluginSet
|
- PostFilter is a list of plugins that are invoked after filtering phase, but only when no feasible nodes were found for the pod. | +
preScore [Required]PluginSet
|
- PreScore is a list of plugins that are invoked before scoring. | +
score [Required]PluginSet
|
- Score is a list of plugins that should be invoked when ranking nodes that have passed the filtering phase. | +
reserve [Required]PluginSet
|
- Reserve is a list of plugins invoked when reserving/unreserving resources -after a node is assigned to run the pod. | +
permit [Required]PluginSet
|
- Permit is a list of plugins that control binding of a Pod. These plugins can prevent or delay binding of a Pod. | +
preBind [Required]PluginSet
|
- PreBind is a list of plugins that should be invoked before a pod is bound. | +
bind [Required]PluginSet
|
- Bind is a list of plugins that should be invoked at "Bind" extension point of the scheduling framework. -The scheduler call these plugins in order. Scheduler skips the rest of these plugins as soon as one returns success. | +
postBind [Required]PluginSet
|
- PostBind is a list of plugins that should be invoked after a pod is successfully bound. | +
multiPoint [Required]PluginSet
|
- MultiPoint is a simplified config section to enable plugins for all valid extension points. | +
PodTopologySpreadConstraintsDefaulting defines how to set default constraints +for the PodTopologySpread plugin.
+ ## `RequestedToCapacityRatioParam` {#kubescheduler-config-k8s-io-v1beta2-RequestedToCapacityRatioParam} - - **Appears in:** + - [ScoringStrategy](#kubescheduler-config-k8s-io-v1beta2-ScoringStrategy) -RequestedToCapacityRatioParam define RequestedToCapacityRatio parameters +RequestedToCapacityRatioParam define RequestedToCapacityRatio parameters
+| Field | Description |
|---|---|
shape [Required][]UtilizationShapePoint
|
- Shape is a list of points defining the scoring function shape. | +
ResourceSpec represents a single resource.
+| Field | Description |
|---|---|
name [Required]string
|
- Name of the resource. | +
weight [Required]int64
|
- Weight of the resource. | +
ScoringStrategy define ScoringStrategyType for node resource plugin
+| Field | Description |
|---|---|
type [Required]ScoringStrategyType
|
- Type selects which strategy to run. | +
resources [Required][]ResourceSpec
|
- Resources to consider when scoring.
-The default resource set includes "cpu" and "memory" with an equal weight.
+ Resources to consider when scoring. +The default resource set includes "cpu" and "memory" with an equal weight. Allowed weights go from 1 to 100. -Weight defaults to 1 if not specified or explicitly set to 0. |
+Weight defaults to 1 if not specified or explicitly set to 0.
+
requestedToCapacityRatio [Required]RequestedToCapacityRatioParam
|
- Arguments specific to RequestedToCapacityRatio strategy. | +
ScoringStrategyType the type of scoring strategy used in NodeResourcesFit plugin.
+ ## `UtilizationShapePoint` {#kubescheduler-config-k8s-io-v1beta2-UtilizationShapePoint} - - **Appears in:** + - [VolumeBindingArgs](#kubescheduler-config-k8s-io-v1beta2-VolumeBindingArgs) + - [RequestedToCapacityRatioParam](#kubescheduler-config-k8s-io-v1beta2-RequestedToCapacityRatioParam) -UtilizationShapePoint represents single point of priority function shape. +UtilizationShapePoint represents single point of priority function shape.
+| Field | Description |
|---|---|
utilization [Required]int32
|
- Utilization (x axis). Valid values are 0 to 100. Fully utilized node maps to 100. | +
score [Required]int32
|
- Score assigned to given utilization (y axis). Valid values are 0 to 10. | +
| Field | Description |
|---|---|
kubeconfig [Required]- string
- |
-- kubeconfig is the path to a KubeConfig file. | -
acceptContentTypes [Required]- string
- |
-- acceptContentTypes defines the Accept header sent by clients when connecting to a server, overriding the -default value of 'application/json'. This field will control all connections to the server used by a particular -client. | -
contentType [Required]- string
- |
-- contentType is the content type used when sending data to the server from this client. | -
qps [Required]- float32
- |
-- qps controls the number of queries per second allowed for this connection. | -
burst [Required]- int32
- |
-- burst allows extra queries to accumulate when a client is exceeding its rate. | -
| Field | Description |
|---|---|
enableProfiling [Required]- bool
- |
-- enableProfiling enables profiling via web interface host:port/debug/pprof/ | -
enableContentionProfiling [Required]- bool
- |
-- enableContentionProfiling enables lock contention profiling, if -enableProfiling is true. | -
| Field | Description |
|---|---|
json [Required]- JSONOptions
- |
-- [Experimental] JSON contains options for logging format "json". | -
| Field | Description |
|---|---|
splitStream [Required]- bool
- |
-- [Experimental] SplitStream redirects error messages to stderr while -info messages go to stdout, with buffering. The default is to write -both to stdout, without buffering. | -
infoBufferSize [Required]- k8s.io/apimachinery/pkg/api/resource.QuantityValue
- |
-- [Experimental] InfoBufferSize sets the size of the info stream when -using split streams. The default is zero, which disables buffering. | -
| Field | Description |
|---|---|
leaderElect [Required]- bool
- |
-- leaderElect enables a leader election client to gain leadership -before executing the main loop. Enable this when running replicated -components for high availability. | -
leaseDuration [Required]- meta/v1.Duration
- |
-- leaseDuration is the duration that non-leader candidates will wait -after observing a leadership renewal until attempting to acquire -leadership of a led but unrenewed leader slot. This is effectively the -maximum duration that a leader can be stopped before it is replaced -by another candidate. This is only applicable if leader election is -enabled. | -
renewDeadline [Required]- meta/v1.Duration
- |
-- renewDeadline is the interval between attempts by the acting master to -renew a leadership slot before it stops leading. This must be less -than or equal to the lease duration. This is only applicable if leader -election is enabled. | -
retryPeriod [Required]- meta/v1.Duration
- |
-- retryPeriod is the duration the clients should wait between attempting -acquisition and renewal of a leadership. This is only applicable if -leader election is enabled. | -
resourceLock [Required]- string
- |
-- resourceLock indicates the resource object type that will be used to lock -during leader election cycles. | -
resourceName [Required]- string
- |
-- resourceName indicates the name of resource object that will be used to lock -during leader election cycles. | -
resourceNamespace [Required]- string
- |
-- resourceName indicates the namespace of resource object that will be used to lock -during leader election cycles. | -
| Field | Description |
|---|---|
format [Required]- string
- |
-- Format Flag specifies the structure of log messages. -default value of format is `text` | -
flushFrequency [Required]- time.Duration
- |
-- Maximum number of seconds between log flushes. Ignored if the -selected logging backend writes log messages without buffering. | -
verbosity [Required]- uint32
- |
-- Verbosity is the threshold that determines which log messages are -logged. Default is zero which logs only the most important -messages. Higher values enable additional messages. Error messages -are always logged. | -
vmodule [Required]- VModuleConfiguration
- |
-- VModule overrides the verbosity threshold for individual files. -Only supported for "text" log format. | -
sanitization [Required]- bool
- |
-- [Experimental] When enabled prevents logging of fields tagged as sensitive (passwords, keys, tokens). -Runtime log sanitization may introduce significant computation overhead and therefore should not be enabled in production.`) | -
options [Required]- FormatOptions
- |
-- [Experimental] Options holds additional parameters that are specific -to the different logging formats. Only the options for the selected -format get used, but all of them get validated. | -
DefaultPreemptionArgs holds arguments used to configure the +DefaultPreemption plugin.
-DefaultPreemptionArgs holds arguments used to configure the -DefaultPreemption plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta3 |
kindstring | DefaultPreemptionArgs |
minCandidateNodesPercentage [Required]int32
|
- MinCandidateNodesPercentage is the minimum number of candidates to
+ MinCandidateNodesPercentage is the minimum number of candidates to shortlist when dry running preemption as a percentage of number of nodes. Must be in the range [0, 100]. Defaults to 10% of the cluster size if -unspecified. |
+unspecified.
+
minCandidateNodesAbsolute [Required]int32
|
- MinCandidateNodesAbsolute is the absolute minimum number of candidates to
+ MinCandidateNodesAbsolute is the absolute minimum number of candidates to shortlist. The likely number of candidates enumerated for dry running preemption is given by the formula: -numCandidates = max(numNodes ∗ minCandidateNodesPercentage, minCandidateNodesAbsolute) -We say "likely" because there are other factors such as PDB violations +numCandidates = max(numNodes * minCandidateNodesPercentage, minCandidateNodesAbsolute) +We say "likely" because there are other factors such as PDB violations that play a role in the number of candidates shortlisted. Must be at least -0 nodes. Defaults to 100 nodes if unspecified. |
+0 nodes. Defaults to 100 nodes if unspecified.
+
InterPodAffinityArgs holds arguments used to configure the InterPodAffinity plugin.
-InterPodAffinityArgs holds arguments used to configure the InterPodAffinity plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta3 |
kindstring | InterPodAffinityArgs |
hardPodAffinityWeight [Required]int32
|
- HardPodAffinityWeight is the scoring weight for existing pods with a -matching hard affinity to the incoming pod. | +
KubeSchedulerConfiguration configures a scheduler
-KubeSchedulerConfiguration configures a scheduler -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta3 |
kindstring | KubeSchedulerConfiguration |
parallelism [Required]int32
|
- Parallelism defines the amount of parallelism in algorithms for scheduling a Pods. Must be greater than 0. Defaults to 16 | +
leaderElection [Required]LeaderElectionConfiguration
|
- LeaderElection defines the configuration of leader election client. | +
clientConnection [Required]ClientConnectionConfiguration
|
- ClientConnection specifies the kubeconfig file and client connection -settings for the proxy server to use when communicating with the apiserver. | +
DebuggingConfiguration [Required]DebuggingConfiguration
|
(Members of DebuggingConfiguration are embedded into this type.)
- DebuggingConfiguration holds configuration for Debugging related features
-TODO: We might wanna make this a substruct like Debugging componentbaseconfigv1alpha1.DebuggingConfiguration |
+
percentageOfNodesToScore [Required]int32
|
- PercentageOfNodesToScore is the percentage of all nodes that once found feasible
+ PercentageOfNodesToScore is the percentage of all nodes that once found feasible for running a pod, the scheduler stops its search for more feasible nodes in the cluster. This helps improve scheduler's performance. Scheduler always tries to find -at least "minFeasibleNodesToFind" feasible nodes no matter what the value of this flag is. +at least "minFeasibleNodesToFind" feasible nodes no matter what the value of this flag is. Example: if the cluster size is 500 nodes and the value of this flag is 30, then scheduler stops finding further feasible nodes once it finds 150 feasible ones. When the value is 0, default percentage (5%--50% based on the size of the cluster) of the -nodes will be scored. |
+nodes will be scored.
+
podInitialBackoffSeconds [Required]int64
|
- PodInitialBackoffSeconds is the initial backoff for unschedulable pods.
+ PodInitialBackoffSeconds is the initial backoff for unschedulable pods. If specified, it must be greater than 0. If this value is null, the default value (1s) -will be used. |
+will be used.
+
podMaxBackoffSeconds [Required]int64
|
- PodMaxBackoffSeconds is the max backoff for unschedulable pods.
+ PodMaxBackoffSeconds is the max backoff for unschedulable pods. If specified, it must be greater than podInitialBackoffSeconds. If this value is null, -the default value (10s) will be used. |
+the default value (10s) will be used.
+
profiles [Required][]KubeSchedulerProfile
|
- Profiles are scheduling profiles that kube-scheduler supports. Pods can
+ Profiles are scheduling profiles that kube-scheduler supports. Pods can choose to be scheduled under a particular profile by setting its associated scheduler name. Pods that don't specify any scheduler name are scheduled -with the "default-scheduler" profile, if present here. |
+with the "default-scheduler" profile, if present here.
+
extenders [Required][]Extender
|
- Extenders are the list of scheduler extenders, each holding the values of how to communicate -with the extender. These extenders are shared by all scheduler profiles. | +
NodeAffinityArgs holds arguments to configure the NodeAffinity plugin.
-NodeAffinityArgs holds arguments to configure the NodeAffinity plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta3 |
kindstring | NodeAffinityArgs |
addedAffinitycore/v1.NodeAffinity
|
- AddedAffinity is applied to all Pods additionally to the NodeAffinity
+ AddedAffinity is applied to all Pods additionally to the NodeAffinity specified in the PodSpec. That is, Nodes need to satisfy AddedAffinity AND .spec.NodeAffinity. AddedAffinity is empty by default (all Nodes match). When AddedAffinity is used, some Pods with affinity requirements that match -a specific Node (such as Daemonset Pods) might remain unschedulable. |
+a specific Node (such as Daemonset Pods) might remain unschedulable.
+
NodeResourcesBalancedAllocationArgs holds arguments used to configure NodeResourcesBalancedAllocation plugin.
-NodeResourcesBalancedAllocationArgs holds arguments used to configure NodeResourcesBalancedAllocation plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta3 |
kindstring | NodeResourcesBalancedAllocationArgs |
resources [Required][]ResourceSpec
|
- Resources to be managed, the default is "cpu" and "memory" if not specified. | +
NodeResourcesFitArgs holds arguments used to configure the NodeResourcesFit plugin.
-NodeResourcesFitArgs holds arguments used to configure the NodeResourcesFit plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta3 |
kindstring | NodeResourcesFitArgs |
ignoredResources [Required][]string
|
- IgnoredResources is the list of resources that NodeResources fit filter -should ignore. This doesn't apply to scoring. | +
ignoredResourceGroups [Required][]string
|
- IgnoredResourceGroups defines the list of resource groups that NodeResources fit filter should ignore. -e.g. if group is ["example.com"], it will ignore all resource names that begin -with "example.com", such as "example.com/aaa" and "example.com/bbb". -A resource group name can't contain '/'. This doesn't apply to scoring. | +
scoringStrategy [Required]ScoringStrategy
|
- ScoringStrategy selects the node resource scoring strategy. -The default strategy is LeastAllocated with an equal "cpu" and "memory" weight. | +
PodTopologySpreadArgs holds arguments used to configure the PodTopologySpread plugin.
-PodTopologySpreadArgs holds arguments used to configure the PodTopologySpread plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta3 |
kindstring | PodTopologySpreadArgs |
defaultConstraints[]core/v1.TopologySpreadConstraint
|
- DefaultConstraints defines topology spread constraints to be applied to
-Pods that don't define any in `pod.spec.topologySpreadConstraints`.
-`.defaultConstraints[∗].labelSelectors` must be empty, as they are
+ DefaultConstraints defines topology spread constraints to be applied to
+Pods that don't define any in |
+When not empty, .defaultingType must be "List".
+
defaultingTypePodTopologySpreadConstraintsDefaulting
|
- DefaultingType determines how .defaultConstraints are deduced. Can be one -of "System" or "List". - -- "System": Use kubernetes defined constraints that spread Pods among - Nodes and Zones. -- "List": Use constraints defined in .defaultConstraints. - -Defaults to "List" if feature gate DefaultPodTopologySpread is disabled -and to "System" if enabled. | +
VolumeBindingArgs holds arguments used to configure the VolumeBinding plugin.
-VolumeBindingArgs holds arguments used to configure the VolumeBinding plugin. -| Field | Description |
|---|---|
apiVersionstring | kubescheduler.config.k8s.io/v1beta3 |
kindstring | VolumeBindingArgs |
bindTimeoutSeconds [Required]int64
|
- BindTimeoutSeconds is the timeout in seconds in volume binding operation.
+ BindTimeoutSeconds is the timeout in seconds in volume binding operation. Value must be non-negative integer. The value zero indicates no waiting. -If this value is nil, the default value (600) will be used. |
+If this value is nil, the default value (600) will be used.
+
shape[]UtilizationShapePoint
|
- Shape specifies the points defining the score function shape, which is
+ Shape specifies the points defining the score function shape, which is used to score nodes based on the utilization of statically provisioned PVs. The utilization is calculated by dividing the total requested storage of the pod by the total capacity of feasible PVs on each node. Each point contains utilization (ranges from 0 to 100) and its associated score (ranges from 0 to 10). You can turn the priority by specifying different scores for different utilization numbers. -The default shape points are: -1) 0 for 0 utilization -2) 10 for 100 utilization -All points must be sorted in increasing order by utilization. |
+The default shape points are:
+
Extender holds the parameters used to communicate with the extender. If a verb is unspecified/empty, +it is assumed that the extender chose not to provide that extension.
+| Field | Description |
|---|---|
urlPrefix [Required]string
|
- URLPrefix at which the extender is available | +
filterVerb [Required]string
|
- Verb for the filter call, empty if not supported. This verb is appended to the URLPrefix when issuing the filter call to extender. | +
preemptVerb [Required]string
|
- Verb for the preempt call, empty if not supported. This verb is appended to the URLPrefix when issuing the preempt call to extender. | +
prioritizeVerb [Required]string
|
- Verb for the prioritize call, empty if not supported. This verb is appended to the URLPrefix when issuing the prioritize call to extender. | +
weight [Required]int64
|
- The numeric multiplier for the node scores that the prioritize call generates. -The weight should be a positive integer | +
bindVerb [Required]string
|
- Verb for the bind call, empty if not supported. This verb is appended to the URLPrefix when issuing the bind call to extender.
+ Verb for the bind call, empty if not supported. This verb is appended to the URLPrefix when issuing the bind call to extender. If this method is implemented by the extender, it is the extender's responsibility to bind the pod to apiserver. Only one extender -can implement this function. |
+can implement this function.
+
enableHTTPS [Required]bool
|
- EnableHTTPS specifies whether https should be used to communicate with the extender | +
tlsConfig [Required]ExtenderTLSConfig
|
- TLSConfig specifies the transport layer security config | +
httpTimeout [Required]- meta/v1.Duration
+meta/v1.Duration
|
- HTTPTimeout specifies the timeout duration for a call to the extender. Filter timeout fails the scheduling of the pod. Prioritize -timeout is ignored, k8s/other extenders priorities are used to select the node. | +
nodeCacheCapable [Required]bool
|
- NodeCacheCapable specifies that the extender is capable of caching node information,
+ NodeCacheCapable specifies that the extender is capable of caching node information, so the scheduler should only send minimal information about the eligible nodes -assuming that the extender already cached full details of all nodes in the cluster |
+assuming that the extender already cached full details of all nodes in the cluster
+
managedResources[]ExtenderManagedResource
|
- ManagedResources is a list of extended resources that are managed by -this extender. -- A pod will be sent to the extender on the Filter, Prioritize and Bind - (if the extender is the binder) phases iff the pod requests at least - one of the extended resources in this list. If empty or unspecified, - all pods will be sent to this extender. -- If IgnoredByScheduler is set to true for a resource, kube-scheduler - will skip checking the resource in predicates. | +
ignorable [Required]bool
|
- Ignorable specifies if the extender is ignorable, i.e. scheduling should not -fail when the extender returns an error or is not reachable. | +
ExtenderManagedResource describes the arguments of extended resources +managed by an extender.
+| Field | Description |
|---|---|
name [Required]string
|
- Name is the extended resource name. | +
ignoredByScheduler [Required]bool
|
- IgnoredByScheduler indicates whether kube-scheduler should ignore this -resource when applying predicates. | +
ExtenderTLSConfig contains settings to enable TLS with extender
+| Field | Description |
|---|---|
insecure [Required]bool
|
- Server should be accessed without verifying the TLS certificate. For testing only. | +
serverName [Required]string
|
- ServerName is passed to the server for SNI and is used in the client to check server
+ ServerName is passed to the server for SNI and is used in the client to check server certificates against. If ServerName is empty, the hostname used to contact the -server is used. |
+server is used.
+
certFile [Required]string
|
- Server requires TLS client certificate authentication | +
keyFile [Required]string
|
- Server requires TLS client certificate authentication | +
caFile [Required]string
|
- Trusted root certificates for server | +
certData [Required][]byte
|
- CertData holds PEM-encoded bytes (typically read from a client certificate file). -CertData takes precedence over CertFile | +
keyData [Required][]byte
|
- KeyData holds PEM-encoded bytes (typically read from a client certificate key file). -KeyData takes precedence over KeyFile | +
caData [Required][]byte
|
- CAData holds PEM-encoded bytes (typically read from a root certificates bundle). -CAData takes precedence over CAFile | +
KubeSchedulerProfile is a scheduling profile.
+| Field | Description |
|---|---|
schedulerName [Required]string
|
- SchedulerName is the name of the scheduler associated to this profile. -If SchedulerName matches with the pod's "spec.schedulerName", then the pod -is scheduled with this profile. | +
plugins [Required]Plugins
|
- Plugins specify the set of plugins that should be enabled or disabled.
+ Plugins specify the set of plugins that should be enabled or disabled. Enabled plugins are the ones that should be enabled in addition to the default plugins. Disabled plugins are any of the default plugins that should be disabled. When no enabled or disabled plugin is specified for an extension point, default plugins for that extension point will be used if there is any. If a QueueSort plugin is specified, the same QueueSort Plugin and -PluginConfig must be specified for all profiles. |
+PluginConfig must be specified for all profiles.
+
pluginConfig [Required][]PluginConfig
|
- PluginConfig is an optional set of custom plugin arguments for each plugin.
+ PluginConfig is an optional set of custom plugin arguments for each plugin. Omitting config args for a plugin is equivalent to using the default config -for that plugin. |
+for that plugin.
+
Plugin specifies a plugin name and its weight when applicable. Weight is used only for Score plugins.
+| Field | Description |
|---|---|
name [Required]string
|
- Name defines the name of plugin | +
weight [Required]int32
|
- Weight defines the weight of plugin, only used for Score plugins. | +
PluginConfig specifies arguments that should be passed to a plugin at the time of initialization. A plugin that is invoked at multiple extension points is initialized once. Args can have arbitrary structure. -It is up to the plugin to process these Args. +It is up to the plugin to process these Args.
+| Field | Description |
|---|---|
name [Required]string
|
- Name defines the name of plugin being configured | +
args [Required]- k8s.io/apimachinery/pkg/runtime.RawExtension
+k8s.io/apimachinery/pkg/runtime.RawExtension
|
- Args defines the arguments passed to the plugins at the time of initialization. Args can have arbitrary structure. | +
PluginSet specifies enabled and disabled plugins for an extension point. +If an array is empty, missing, or nil, default plugins at that extension point will be used.
+| Field | Description |
|---|---|
enabled [Required][]Plugin
|
- Enabled specifies plugins that should be enabled in addition to default plugins.
+ Enabled specifies plugins that should be enabled in addition to default plugins. If the default plugin is also configured in the scheduler config file, the weight of plugin will be overridden accordingly. -These are called after default plugins and in the same order specified here. |
+These are called after default plugins and in the same order specified here.
+
disabled [Required][]Plugin
|
- Disabled specifies default plugins that should be disabled. -When all default plugins need to be disabled, an array containing only one "∗" should be provided. | +
Plugins include multiple extension points. When specified, the list of plugins for a particular extension point are the only ones enabled. If an extension point is omitted from the config, then the default set of plugins is used for that extension point. Enabled plugins are called in the order specified here, after default plugins. If they need to -be invoked before default plugins, default plugins must be disabled and re-enabled here in desired order. +be invoked before default plugins, default plugins must be disabled and re-enabled here in desired order.
+| Field | Description |
|---|---|
queueSort [Required]PluginSet
|
- QueueSort is a list of plugins that should be invoked when sorting pods in the scheduling queue. | +
preFilter [Required]PluginSet
|
- PreFilter is a list of plugins that should be invoked at "PreFilter" extension point of the scheduling framework. | +
filter [Required]PluginSet
|
- Filter is a list of plugins that should be invoked when filtering out nodes that cannot run the Pod. | +
postFilter [Required]PluginSet
|
- PostFilter is a list of plugins that are invoked after filtering phase, but only when no feasible nodes were found for the pod. | +
preScore [Required]PluginSet
|
- PreScore is a list of plugins that are invoked before scoring. | +
score [Required]PluginSet
|
- Score is a list of plugins that should be invoked when ranking nodes that have passed the filtering phase. | +
reserve [Required]PluginSet
|
- Reserve is a list of plugins invoked when reserving/unreserving resources -after a node is assigned to run the pod. | +
permit [Required]PluginSet
|
- Permit is a list of plugins that control binding of a Pod. These plugins can prevent or delay binding of a Pod. | +
preBind [Required]PluginSet
|
- PreBind is a list of plugins that should be invoked before a pod is bound. | +
bind [Required]PluginSet
|
- Bind is a list of plugins that should be invoked at "Bind" extension point of the scheduling framework. -The scheduler call these plugins in order. Scheduler skips the rest of these plugins as soon as one returns success. | +
postBind [Required]PluginSet
|
- PostBind is a list of plugins that should be invoked after a pod is successfully bound. | +
multiPoint [Required]PluginSet
|
- MultiPoint is a simplified config section to enable plugins for all valid extension points.
+ MultiPoint is a simplified config section to enable plugins for all valid extension points. Plugins enabled through MultiPoint will automatically register for every individual extension point the plugin has implemented. Disabling a plugin through MultiPoint disables that behavior. -The same is true for disabling "∗" through MultiPoint (no default plugins will be automatically registered). -Plugins can still be disabled through their individual extension points. - -In terms of precedence, plugin config follows this basic hierarchy - 1. Specific extension points - 2. Explicitly configured MultiPoint plugins - 3. The set of default plugins, as MultiPoint plugins +The same is true for disabling "*" through MultiPoint (no default plugins will be automatically registered). +Plugins can still be disabled through their individual extension points. +In terms of precedence, plugin config follows this basic hierarchy +
|
+set in both
PodTopologySpreadConstraintsDefaulting defines how to set default constraints +for the PodTopologySpread plugin.
+ ## `RequestedToCapacityRatioParam` {#kubescheduler-config-k8s-io-v1beta3-RequestedToCapacityRatioParam} - - **Appears in:** + - [ScoringStrategy](#kubescheduler-config-k8s-io-v1beta3-ScoringStrategy) -RequestedToCapacityRatioParam define RequestedToCapacityRatio parameters +RequestedToCapacityRatioParam define RequestedToCapacityRatio parameters
+| Field | Description |
|---|---|
shape [Required][]UtilizationShapePoint
|
- Shape is a list of points defining the scoring function shape. | +
ResourceSpec represents a single resource.
+| Field | Description |
|---|---|
name [Required]string
|
- Name of the resource. | +
weight [Required]int64
|
- Weight of the resource. | +
ScoringStrategy define ScoringStrategyType for node resource plugin
+| Field | Description |
|---|---|
type [Required]ScoringStrategyType
|
- Type selects which strategy to run. | +
resources [Required][]ResourceSpec
|
- Resources to consider when scoring.
-The default resource set includes "cpu" and "memory" with an equal weight.
+ Resources to consider when scoring. +The default resource set includes "cpu" and "memory" with an equal weight. Allowed weights go from 1 to 100. -Weight defaults to 1 if not specified or explicitly set to 0. |
+Weight defaults to 1 if not specified or explicitly set to 0.
+
requestedToCapacityRatio [Required]RequestedToCapacityRatioParam
|
- Arguments specific to RequestedToCapacityRatio strategy. | +
ScoringStrategyType the type of scoring strategy used in NodeResourcesFit plugin.
+ ## `UtilizationShapePoint` {#kubescheduler-config-k8s-io-v1beta3-UtilizationShapePoint} - - **Appears in:** + - [VolumeBindingArgs](#kubescheduler-config-k8s-io-v1beta3-VolumeBindingArgs) + - [RequestedToCapacityRatioParam](#kubescheduler-config-k8s-io-v1beta3-RequestedToCapacityRatioParam) -UtilizationShapePoint represents single point of priority function shape. +UtilizationShapePoint represents single point of priority function shape.
+| Field | Description |
|---|---|
utilization [Required]int32
|
- Utilization (x axis). Valid values are 0 to 100. Fully utilized node maps to 100. | +
score [Required]int32
|
- Score assigned to given utilization (y axis). Valid values are 0 to 10. | +
ClientConnectionConfiguration contains details for constructing a client.
+| Field | Description |
|---|---|
kubeconfig [Required]string
|
- kubeconfig is the path to a KubeConfig file. | +
acceptContentTypes [Required]string
|
- acceptContentTypes defines the Accept header sent by clients when connecting to a server, overriding the
+ acceptContentTypes defines the Accept header sent by clients when connecting to a server, overriding the default value of 'application/json'. This field will control all connections to the server used by a particular -client. |
+client.
+
contentType [Required]string
|
- contentType is the content type used when sending data to the server from this client. | +
qps [Required]float32
|
- qps controls the number of queries per second allowed for this connection. | +
burst [Required]int32
|
- burst allows extra queries to accumulate when a client is exceeding its rate. | +
DebuggingConfiguration holds configuration for Debugging related features.
-DebuggingConfiguration holds configuration for Debugging related features.| Field | Description |
|---|---|
enableProfiling [Required]bool
|
- enableProfiling enables profiling via web interface host:port/debug/pprof/ | +
enableContentionProfiling [Required]bool
|
- enableContentionProfiling enables lock contention profiling, if -enableProfiling is true. | +
FormatOptions contains options for the different logging formats.
+| Field | Description |
|---|---|
json [Required]JSONOptions
|
- [Experimental] JSON contains options for logging format "json". | +
JSONOptions contains options for logging format "json".
+| Field | Description |
|---|---|
splitStream [Required]bool
|
- [Experimental] SplitStream redirects error messages to stderr while
+ [Experimental] SplitStream redirects error messages to stderr while info messages go to stdout, with buffering. The default is to write -both to stdout, without buffering. |
+both to stdout, without buffering.
+
infoBufferSize [Required]k8s.io/apimachinery/pkg/api/resource.QuantityValue
|
- [Experimental] InfoBufferSize sets the size of the info stream when -using split streams. The default is zero, which disables buffering. | +
LeaderElectionConfiguration defines the configuration of leader election +clients for components that can run with leader election enabled.
+| Field | Description |
|---|---|
leaderElect [Required]bool
|
- leaderElect enables a leader election client to gain leadership
+ leaderElect enables a leader election client to gain leadership before executing the main loop. Enable this when running replicated -components for high availability. |
+components for high availability.
+
leaseDuration [Required]- meta/v1.Duration
+meta/v1.Duration
|
- leaseDuration is the duration that non-leader candidates will wait
+ leaseDuration is the duration that non-leader candidates will wait after observing a leadership renewal until attempting to acquire leadership of a led but unrenewed leader slot. This is effectively the maximum duration that a leader can be stopped before it is replaced by another candidate. This is only applicable if leader election is -enabled. |
+enabled.
+
renewDeadline [Required]- meta/v1.Duration
+meta/v1.Duration
|
- renewDeadline is the interval between attempts by the acting master to
+ renewDeadline is the interval between attempts by the acting master to renew a leadership slot before it stops leading. This must be less than or equal to the lease duration. This is only applicable if leader -election is enabled. |
+election is enabled.
+
retryPeriod [Required]- meta/v1.Duration
+meta/v1.Duration
|
- retryPeriod is the duration the clients should wait between attempting
+ retryPeriod is the duration the clients should wait between attempting acquisition and renewal of a leadership. This is only applicable if -leader election is enabled. |
+leader election is enabled.
+
resourceLock [Required]string
|
- resourceLock indicates the resource object type that will be used to lock -during leader election cycles. | +
resourceName [Required]string
|
- resourceName indicates the name of resource object that will be used to lock -during leader election cycles. | +
resourceNamespace [Required]string
|
- resourceName indicates the namespace of resource object that will be used to lock -during leader election cycles. | +
LoggingConfiguration contains logging options +Refer Logs Options for more information.
+| Field | Description |
|---|---|
format [Required]string
|
- Format Flag specifies the structure of log messages. -default value of format is `text` | +
flushFrequency [Required]- time.Duration
+time.Duration
|
- Maximum number of seconds between log flushes. Ignored if the -selected logging backend writes log messages without buffering. | +
verbosity [Required]uint32
|
- Verbosity is the threshold that determines which log messages are
+ Verbosity is the threshold that determines which log messages are logged. Default is zero which logs only the most important messages. Higher values enable additional messages. Error messages -are always logged. |
+are always logged.
+
vmodule [Required]VModuleConfiguration
|
- VModule overrides the verbosity threshold for individual files. -Only supported for "text" log format. | +
sanitization [Required]bool
|
- [Experimental] When enabled prevents logging of fields tagged as sensitive (passwords, keys, tokens). -Runtime log sanitization may introduce significant computation overhead and therefore should not be enabled in production.`) | +
options [Required]FormatOptions
|
- [Experimental] Options holds additional parameters that are specific
+ [Experimental] Options holds additional parameters that are specific to the different logging formats. Only the options for the selected -format get used, but all of them get validated. |
+format get used, but all of them get validated.
+
VModuleConfiguration is a collection of individual file names or patterns +and the corresponding verbosity threshold.
+ diff --git a/content/en/docs/reference/config-api/kubeadm-config.v1beta2.md b/content/en/docs/reference/config-api/kubeadm-config.v1beta2.md index f3c5b521ab..8874cf6a36 100644 --- a/content/en/docs/reference/config-api/kubeadm-config.v1beta2.md +++ b/content/en/docs/reference/config-api/kubeadm-config.v1beta2.md @@ -4,280 +4,245 @@ content_type: tool-reference package: kubeadm.k8s.io/v1beta2 auto_generated: true --- -## Overview - -Package v1beta2 defines the v1beta2 version of the kubeadm configuration file format. -This version improves on the v1beta1 format by fixing some minor issues and adding a few new fields. - -A list of changes since v1beta1: - -- "certificateKey" field is added to InitConfiguration and JoinConfiguration. -- "ignorePreflightErrors" field is added to the NodeRegistrationOptions. -- The JSON "omitempty" tag is used in a more places where appropriate. -- The JSON "omitempty" tag of the "taints" field (inside NodeRegistrationOptions) is removed. - -See the Kubernetes 1.15 changelog for further details. - -Migration from old kubeadm config versions - -Please convert your v1beta1 configuration files to v1beta2 using the "kubeadm config migrate" command of kubeadm v1.15.x -(conversion from older releases of kubeadm config files requires older release of kubeadm as well e.g. - -- kubeadm v1.11 should be used to migrate v1alpha1 to v1alpha2; kubeadm v1.12 should be used to translate v1alpha2 to v1alpha3; -- kubeadm v1.13 or v1.14 should be used to translate v1alpha3 to v1beta1) - -Nevertheless, kubeadm v1.15.x will support reading from v1beta1 version of the kubeadm config file format. - -## Basics - -The preferred way to configure kubeadm is to pass an YAML configuration file with the `--config` option. Some of the +Package v1beta2 defines the v1beta2 version of the kubeadm configuration file format. +This version improves on the v1beta1 format by fixing some minor issues and adding a few new fields.
+A list of changes since v1beta1:
+See the Kubernetes 1.15 changelog for further details.
+Migration from old kubeadm config versions
+Please convert your v1beta1 configuration files to v1beta2 using the "kubeadm config migrate" command of kubeadm v1.15.x +(conversion from older releases of kubeadm config files requires older release of kubeadm as well e.g.
+Nevertheless, kubeadm v1.15.x will support reading from v1beta1 version of the kubeadm config file format.
+The preferred way to configure kubeadm is to pass an YAML configuration file with the --config option. Some of the
configuration options defined in the kubeadm config file are also available as command line flags, but only
-the most common/simple use case are supported with this approach.
-
-A kubeadm config file could contain multiple configuration types separated using three dashes (`---`).
-
-kubeadm supports the following configuration types:
-
-```yaml
-apiVersion: kubeadm.k8s.io/v1beta2
-kind: InitConfiguration
-
-apiVersion: kubeadm.k8s.io/v1beta2
-kind: ClusterConfiguration
-
-apiVersion: kubelet.config.k8s.io/v1beta1
-kind: KubeletConfiguration
-
-apiVersion: kubeproxy.config.k8s.io/v1alpha1
-kind: KubeProxyConfiguration
-
-apiVersion: kubeadm.k8s.io/v1beta2
-kind: JoinConfiguration
-```
-
-To print the defaults for "init" and "join" actions use the following commands:
-
-```shell
-kubeadm config print init-defaults
+the most common/simple use case are supported with this approach.
A kubeadm config file could contain multiple configuration types separated using three dashes (---).
kubeadm supports the following configuration types:
+apiVersion: kubeadm.k8s.io/v1beta2 +kind: InitConfiguration + +apiVersion: kubeadm.k8s.io/v1beta2 +kind: ClusterConfiguration + +apiVersion: kubelet.config.k8s.io/v1beta1 +kind: KubeletConfiguration + +apiVersion: kubeproxy.config.k8s.io/v1alpha1 +kind: KubeProxyConfiguration + +apiVersion: kubeadm.k8s.io/v1beta2 +kind: JoinConfiguration +
To print the defaults for "init" and "join" actions use the following commands:
+kubeadm config print init-defaults kubeadm config print join-defaults -``` - -The list of configuration types that must be included in a configuration file depends by the action you are -performing (`init` or `join`) and by the configuration options you are going to use (defaults or advanced customization). - -If some configuration types are not provided, or provided only partially, kubeadm will use default values; defaults +
The list of configuration types that must be included in a configuration file depends by the action you are
+performing (init or join) and by the configuration options you are going to use (defaults or advanced customization).
If some configuration types are not provided, or provided only partially, kubeadm will use default values; defaults
provided by kubeadm includes also enforcing consistency of values across components when required (e.g.
-`--cluster-cidr` flag on controller manager and `clusterCIDR` on kube-proxy).
-
-Users are always allowed to override default values, with the only exception of a small subset of setting with
-relevance for security (e.g. enforce authorization-mode Node and RBAC on API server)
-
-If the user provides a configuration types that is not expected for the action you are performing, kubeadm will
-ignore those types and print a warning.
-
-## Kubeadm init configuration types
-
-When executing kubeadm init with the `--config` option, the following configuration types could be used:
+--cluster-cidr flag on controller manager and clusterCIDR on kube-proxy).
Users are always allowed to override default values, with the only exception of a small subset of setting with +relevance for security (e.g. enforce authorization-mode Node and RBAC on API server)
+If the user provides a configuration types that is not expected for the action you are performing, kubeadm will +ignore those types and print a warning.
+When executing kubeadm init with the --config option, the following configuration types could be used:
InitConfiguration, ClusterConfiguration, KubeProxyConfiguration, KubeletConfiguration, but only one
-between InitConfiguration and ClusterConfiguration is mandatory.
-
-```yaml
-apiVersion: kubeadm.k8s.io/v1beta2
-kind: InitConfiguration
-bootstrapTokens:
- ...
-nodeRegistration:
- ...
-```
-
-The InitConfiguration type should be used to configure runtime settings, that in case of `kubeadm init`
+between InitConfiguration and ClusterConfiguration is mandatory.
apiVersion: kubeadm.k8s.io/v1beta2 +kind: InitConfiguration +bootstrapTokens: + ... +nodeRegistration: + ... +
The InitConfiguration type should be used to configure runtime settings, that in case of kubeadm init
are the configuration of the bootstrap token and all the setting which are specific to the node where kubeadm
-is executed, including:
-
-- `nodeRegistration`, that holds fields that relate to registering the new node to the cluster;
- use it to customize the node name, the CRI socket to use or any other settings that should apply to this
- node only (e.g. the node ip).
-
-- `apiServer`, that represents the endpoint of the instance of the API server to be deployed on this node;
- use it e.g. to customize the API server advertise address.
-
- ```yaml
- apiVersion: kubeadm.k8s.io/v1beta2
- kind: ClusterConfiguration
- networking:
- ...
- etcd:
- ...
- apiServer:
- extraArgs:
- ...
- extraVolumes:
- ...
- ...
- ```
-
-The ClusterConfiguration type should be used to configure cluster-wide settings,
-including settings for:
-
-- Networking, that holds configuration for the networking topology of the cluster; use it e.g. to customize
- pod subnet or services subnet.
-
-- Etcd configurations; use it e.g. to customize the local etcd or to configure the API server
- for using an external etcd cluster.
-
-- kube-apiserver, kube-scheduler, kube-controller-manager configurations; use it to customize control-plane
- components by adding customized setting or overriding kubeadm default settings.
-
- ```yaml
- apiVersion: kubeproxy.config.k8s.io/v1alpha1
- kind: KubeProxyConfiguration
- ...
- ```
-
-The KubeProxyConfiguration type should be used to change the configuration passed to kube-proxy instances deployed
-in the cluster. If this object is not provided or provided only partially, kubeadm applies defaults.
-
-See https://kubernetes.io/docs/reference/command-line-tools-reference/kube-proxy/ or
+is executed, including:
nodeRegistration, that holds fields that relate to registering the new node to the cluster;
+use it to customize the node name, the CRI socket to use or any other settings that should apply to this
+node only (e.g. the node ip).
apiServer, that represents the endpoint of the instance of the API server to be deployed on this node;
+use it e.g. to customize the API server advertise address.
apiVersion: kubeadm.k8s.io/v1beta2 +kind: ClusterConfiguration +networking: + ... +etcd: + ... +apiServer: + extraArgs: + ... + extraVolumes: + ... +... +
The ClusterConfiguration type should be used to configure cluster-wide settings, +including settings for:
+Networking, that holds configuration for the networking topology of the cluster; use it e.g. to customize +pod subnet or services subnet.
+Etcd configurations; use it e.g. to customize the local etcd or to configure the API server +for using an external etcd cluster.
+kube-apiserver, kube-scheduler, kube-controller-manager configurations; use it to customize control-plane +components by adding customized setting or overriding kubeadm default settings.
+apiVersion: kubeproxy.config.k8s.io/v1alpha1 +kind: KubeProxyConfiguration + ... +
The KubeProxyConfiguration type should be used to change the configuration passed to kube-proxy instances deployed +in the cluster. If this object is not provided or provided only partially, kubeadm applies defaults.
+See https://kubernetes.io/docs/reference/command-line-tools-reference/kube-proxy/ or https://godoc.org/k8s.io/kube-proxy/config/v1alpha1#KubeProxyConfiguration -for kube proxy official documentation. - -```yaml -apiVersion: kubelet.config.k8s.io/v1beta1 -kind: KubeletConfiguration - ... -``` - -The KubeletConfiguration type should be used to change the configurations that will be passed to all kubelet instances -deployed in the cluster. If this object is not provided or provided only partially, kubeadm applies defaults. - -See https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet/ or +for kube proxy official documentation.
+apiVersion: kubelet.config.k8s.io/v1beta1 +kind: KubeletConfiguration + ... +
The KubeletConfiguration type should be used to change the configurations that will be passed to all kubelet instances +deployed in the cluster. If this object is not provided or provided only partially, kubeadm applies defaults.
+See https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet/ or https://godoc.org/k8s.io/kubelet/config/v1beta1#KubeletConfiguration -for kubelet official documentation. - -Here is a fully populated example of a single YAML file containing multiple -configuration types to be used during a `kubeadm init` run. - -```yaml -apiVersion: kubeadm.k8s.io/v1beta2 -kind: InitConfiguration -bootstrapTokens: - - token: "9a08jv.c0izixklcxtmnze7" - description: "kubeadm bootstrap token" - ttl: "24h" - - token: "783bde.3f89s0fje9f38fhf" - description: "another bootstrap token" - usages: - - authentication - - signing - groups: - - system:bootstrappers:kubeadm:default-node-token -nodeRegistration: - name: "ec2-10-100-0-1" - criSocket: "/var/run/dockershim.sock" - taints: - - key: "kubeadmNode" - value: "master" - effect: "NoSchedule" - kubeletExtraArgs: - v: 4 - ignorePreflightErrors: - - IsPrivilegedUser -localAPIEndpoint: - advertiseAddress: "10.100.0.1" - bindPort: 6443 -certificateKey: "e6a2eb8581237ab72a4f494f30285ec12a9694d750b9785706a83bfcbbbd2204" ---- -apiVersion: kubeadm.k8s.io/v1beta2 -kind: ClusterConfiguration -etcd: - # one of local or external -local: - imageRepository: "k8s.gcr.io" - imageTag: "3.2.24" - dataDir: "/var/lib/etcd" - extraArgs: - listen-client-urls: "http://10.100.0.1:2379" - serverCertSANs: - - "ec2-10-100-0-1.compute-1.amazonaws.com" - peerCertSANs: - - "10.100.0.1" -# external: -# endpoints: -# - "10.100.0.1:2379" -# - "10.100.0.2:2379" -# caFile: "/etcd/kubernetes/pki/etcd/etcd-ca.crt" -# certFile: "/etcd/kubernetes/pki/etcd/etcd.crt" -# keyFile: "/etcd/kubernetes/pki/etcd/etcd.key" -networking: - serviceSubnet: "10.96.0.0/16" - podSubnet: "10.244.0.0/24" - dnsDomain: "cluster.local" -kubernetesVersion: "v1.12.0" -controlPlaneEndpoint: "10.100.0.1:6443" -apiServer: - extraArgs: - authorization-mode: "Node,RBAC" - extraVolumes: - - name: "some-volume" - hostPath: "/etc/some-path" - mountPath: "/etc/some-pod-path" - readOnly: false - pathType: File - certSANs: - - "10.100.1.1" - - "ec2-10-100-0-1.compute-1.amazonaws.com" - timeoutForControlPlane: 4m0s -controllerManager: - extraArgs: - "node-cidr-mask-size": "20" - extraVolumes: - - name: "some-volume" - hostPath: "/etc/some-path" - mountPath: "/etc/some-pod-path" - readOnly: false - pathType: File -scheduler: - extraArgs: - address: "10.100.0.1" - extraVolumes: - - name: "some-volume" - hostPath: "/etc/some-path" - mountPath: "/etc/some-pod-path" - readOnly: false - pathType: File -certificatesDir: "/etc/kubernetes/pki" -imageRepository: "k8s.gcr.io" -useHyperKubeImage: false -clusterName: "example-cluster" ---- -apiVersion: kubelet.config.k8s.io/v1beta1 -kind: KubeletConfiguration -# kubelet specific options here ---- -apiVersion: kubeproxy.config.k8s.io/v1alpha1 -kind: KubeProxyConfiguration -# kube-proxy specific options here -``` - -## Kubeadm join configuration types - -When executing kubeadm join with the `--config` option, the JoinConfiguration type should be provided. - -```yaml -apiVersion: kubeadm.k8s.io/v1beta2 -kind: JoinConfiguration - ... -``` - -The JoinConfiguration type should be used to configure runtime settings, that in case of `kubeadm join` +for kubelet official documentation.
+Here is a fully populated example of a single YAML file containing multiple
+configuration types to be used during a kubeadm init run.
apiVersion: kubeadm.k8s.io/v1beta2 +kind: InitConfiguration +bootstrapTokens: + - token: "9a08jv.c0izixklcxtmnze7" + description: "kubeadm bootstrap token" + ttl: "24h" + - token: "783bde.3f89s0fje9f38fhf" + description: "another bootstrap token" + usages: + - authentication + - signing + groups: + - system:bootstrappers:kubeadm:default-node-token +nodeRegistration: + name: "ec2-10-100-0-1" + criSocket: "/var/run/dockershim.sock" + taints: + - key: "kubeadmNode" + value: "master" + effect: "NoSchedule" + kubeletExtraArgs: + v: 4 + ignorePreflightErrors: + - IsPrivilegedUser +localAPIEndpoint: + advertiseAddress: "10.100.0.1" + bindPort: 6443 +certificateKey: "e6a2eb8581237ab72a4f494f30285ec12a9694d750b9785706a83bfcbbbd2204" +--- +apiVersion: kubeadm.k8s.io/v1beta2 +kind: ClusterConfiguration +etcd: + # one of local or external + local: + imageRepository: "k8s.gcr.io" + imageTag: "3.2.24" + dataDir: "/var/lib/etcd" + extraArgs: + listen-client-urls: "http://10.100.0.1:2379" + serverCertSANs: + - "ec2-10-100-0-1.compute-1.amazonaws.com" + peerCertSANs: + - "10.100.0.1" + # external: + # endpoints: + # - "10.100.0.1:2379" + # - "10.100.0.2:2379" + # caFile: "/etcd/kubernetes/pki/etcd/etcd-ca.crt" + # certFile: "/etcd/kubernetes/pki/etcd/etcd.crt" + # keyFile: "/etcd/kubernetes/pki/etcd/etcd.key" +networking: + serviceSubnet: "10.96.0.0/16" + podSubnet: "10.244.0.0/24" + dnsDomain: "cluster.local" +kubernetesVersion: "v1.12.0" +controlPlaneEndpoint: "10.100.0.1:6443" +apiServer: + extraArgs: + authorization-mode: "Node,RBAC" + extraVolumes: + - name: "some-volume" + hostPath: "/etc/some-path" + mountPath: "/etc/some-pod-path" + readOnly: false + pathType: File + certSANs: + - "10.100.1.1" + - "ec2-10-100-0-1.compute-1.amazonaws.com" + timeoutForControlPlane: 4m0s +controllerManager: + extraArgs: + "node-cidr-mask-size": "20" + extraVolumes: + - name: "some-volume" + hostPath: "/etc/some-path" + mountPath: "/etc/some-pod-path" + readOnly: false + pathType: File +scheduler: + extraArgs: + address: "10.100.0.1" + extraVolumes: + - name: "some-volume" + hostPath: "/etc/some-path" + mountPath: "/etc/some-pod-path" + readOnly: false + pathType: File +certificatesDir: "/etc/kubernetes/pki" +imageRepository: "k8s.gcr.io" +useHyperKubeImage: false +clusterName: "example-cluster" +--- +apiVersion: kubelet.config.k8s.io/v1beta1 +kind: KubeletConfiguration +# kubelet specific options here +--- +apiVersion: kubeproxy.config.k8s.io/v1alpha1 +kind: KubeProxyConfiguration +# kube-proxy specific options here +
When executing kubeadm join with the --config option, the JoinConfiguration type should be provided.
apiVersion: kubeadm.k8s.io/v1beta2 +kind: JoinConfiguration + ... +
The JoinConfiguration type should be used to configure runtime settings, that in case of kubeadm join
are the discovery method used for accessing the cluster info and all the setting which are specific
-to the node where kubeadm is executed, including:
+to the node where kubeadm is executed, including:
NodeRegistration, that holds fields that relate to registering the new node to the cluster;
+use it to customize the node name, the CRI socket to use or any other settings that should apply to this
+node only (e.g. the node IP).
APIEndpoint, that represents the endpoint of the instance of the API server to be eventually deployed on this node.
ClusterConfiguration contains cluster-wide configuration for a kubeadm cluster
-ClusterConfiguration contains cluster-wide configuration for a kubeadm cluster -| Field | Description |
|---|---|
apiVersionstring | kubeadm.k8s.io/v1beta2 |
kindstring | ClusterConfiguration |
etcd [Required]Etcd
|
- `etcd` holds configuration for etcd. | +
networking [Required]Networking
|
- `networking` holds configuration for the networking topology of the cluster. | +
kubernetesVersion [Required]string
|
- `kubernetesVersion` is the target version of the control plane. | +
controlPlaneEndpoint [Required]string
|
- `controlPlaneEndpoint` sets a stable IP address or DNS name for the control plane; it
+
|
+In case the
apiServer [Required]APIServer
|
- `apiServer` contains extra settings for the API server. | +
controllerManager [Required]ControlPlaneComponent
|
- `controllerManager` contains extra settings for the controller manager. | +
scheduler [Required]ControlPlaneComponent
|
- `scheduler` contains extra settings for the scheduler. | +
dns [Required]DNS
|
- `dns` defines the options for the DNS add-on installed in the cluster. | +
certificatesDir [Required]string
|
- `certificatesDir` specifies where to store or look for all required certificates. | +
imageRepository [Required]string
|
- `mageRepository` sets the container registry to pull images from.
-If empty, `k8s.gcr.io` will be used by default; in case of kubernetes version is
-a CI build (kubernetes version starts with `ci/`) `gcr.io/k8s-staging-ci-images`
+
|
+
useHyperKubeImage [Required]bool
|
- `useHyperKubeImage` controls if hyperkube should be used for Kubernetes components
+
|
+when this set to true, and at some point it may become ignored.
+
featureGates [Required]map[string]bool
|
- `featureGates` contains the feature gates enabled by the user. | +
clusterName [Required]string
|
- The cluster name. | +
ClusterStatus contains the cluster status. The ClusterStatus will be stored in the kubeadm-config ConfigMap in the cluster, and then updated by kubeadm when -additional control plane instance joins or leaves the cluster. +additional control plane instance joins or leaves the cluster.
+| Field | Description |
|---|---|
apiVersionstring | kubeadm.k8s.io/v1beta2 |
kindstring | ClusterStatus |
apiEndpoints [Required]map[string]github.com/tengqm/kubeconfig/config/kubeadm/v1beta2.APIEndpoint
|
- `apiEndpoints` currently available in the cluster, one for each control
+
|
+The key of the map is the IP of the host's default interface.
+
InitConfiguration contains a list of elements that is specific "kubeadm init"-only runtime +information.
-InitConfiguration contains a list of elements that is specific "kubeadm init"-only runtime -information. -| Field | Description |
|---|---|
apiVersionstring | kubeadm.k8s.io/v1beta2 |
kindstring | InitConfiguration |
bootstrapTokens [Required][]BootstrapToken
|
- `bootstrapTokens` is respected at `kubeadm init` time and describes a set of bootstrap tokens to create. -This information IS NOT uploaded to the kubeadm cluster ConfigMap, partly because of its sensitive nature. | +
nodeRegistration [Required]NodeRegistrationOptions
|
- `nodeRegistration` holds fields that relate to registering the new control-plane node to the cluster. | +
localAPIEndpoint [Required]APIEndpoint
|
- `localAPIEndpoint` represents the endpoint of the API server instance that's deployed on this control plane node.
-In HA setups, this differs from `ClusterConfiguration.controlPlaneEndpoint` in the sense that ControlPlaneEndpoint
+
|
+fails you may set the desired value here.
+
certificateKey [Required]string
|
- `certificateKey` sets the key with which certificates and keys are encrypted prior to being uploaded in -a secret in the cluster during the `uploadcerts init` phase. | +
JoinConfiguration contains elements describing a particular node.
-JoinConfiguration contains elements describing a particular node. -| Field | Description |
|---|---|
apiVersionstring | kubeadm.k8s.io/v1beta2 |
kindstring | JoinConfiguration |
nodeRegistration [Required]NodeRegistrationOptions
|
- `nodeRegistration` holds fields that relate to registering the new -control-plane node to the cluster | +
caCertPath [Required]string
|
- `caCertPath` is the path to the SSL certificate authority used to
+
|
+Defaults to "/etc/kubernetes/pki/ca.crt".
+
discovery [Required]Discovery
|
- `discovery` specifies the options for the kubelet to use during the TLS -bootstrap process. | +
controlPlane [Required]JoinControlPlane
|
- `controlPlane` defines the additional control plane instance to be deployed -on the joining node. If nil, no additional control plane instance will be deployed. | +
APIEndpoint struct contains elements of API server instance deployed on a node.
+| Field | Description |
|---|---|
advertiseAddress [Required]string
|
- `advertiseAddress` sets the IP address for the API server to advertise. | +
bindPort [Required]int32
|
- `bindPort` sets the secure port for the API Server to bind to. -Defaults to 6443. | +
APIServer holds settings necessary for API server deployments in the cluster.
+| Field | Description |
|---|---|
ControlPlaneComponent [Required]ControlPlaneComponent
|
(Members of ControlPlaneComponent are embedded into this type.)
- No description provided.
- |
+ No description provided.
certSANs [Required][]string
|
- `certSANs` sets extra Subject Alternative Names (SANs) for the API Server -signing certificate. | +
timeoutForControlPlane [Required]- meta/v1.Duration
+meta/v1.Duration
|
- `timeoutForControlPlane` controls the timeout that we wait for the API server -to appear. | +
BootstrapToken describes one bootstrap token, stored as a Secret in the cluster
+| Field | Description |
|---|---|
token [Required]BootstrapTokenString
|
- `token` is used for establishing bidirectional trust between nodes and control-planes. -Used for joining nodes in the cluster. | +
description [Required]string
|
- `description` sets a human-friendly message why this token exists and what it's used -for, so other administrators can know its purpose. | +
ttl [Required]- meta/v1.Duration
+meta/v1.Duration
|
- `ttl` defines the time to live for this token. Defaults to '24h'. -`expires` and `ttl` are mutually exclusive. | +
expires [Required]meta/v1.Time
|
- `expires` specifies the timestamp when this token expires. Defaults to being set -dynamically at runtime based on the `ttl`. `expires` and `ttl` are mutually exclusive. | +
usages [Required][]string
|
- `usages` describes the ways in which this token can be used. Can by default be used -for establishing bidirectional trust, but that can be changed here. | +
groups [Required][]string
|
- `groups` specifies the extra groups that this token will authenticate as when/if -used for authentication. | +
BootstrapTokenDiscovery is used to set the options for bootstrap token based discovery
+| Field | Description |
|---|---|
token [Required]string
|
- `token` is a token used to validate cluster information fetched from -the control-plane. | +
apiServerEndpoint [Required]string
|
- `apiServerEndpoint` is an IP or domain name to the API server from which information -will be fetched. | +
caCertHashes [Required][]string
|
- `caCertHashes` specifies a set of public key pins to verify when token-based discovery
+
|
+DER-encoded ASN.1. These hashes can be calculated using, for example, OpenSSL.
+
unsafeSkipCAVerification [Required]bool
|
- `unsafeSkipCAVerification` allows token-based discovery without CA verification via -`caCertHashes`. This can weaken the security of kubeadm since other nodes can -impersonate the control-plane. | +
BootstrapTokenString is a token of the format abcdef.abcdef0123456789 that is used for both validation of the practically of the API server from a joining node's point of view and as an authentication method for the node in the bootstrap phase of -"kubeadm join". This token is and should be short-lived +"kubeadm join". This token is and should be short-lived
+| Field | Description |
|---|---|
- [Required]string
|
- No description provided. - | + No description provided.
- [Required]string
|
- No description provided. - | + No description provided.
ControlPlaneComponent holds settings common to control plane component of the cluster
+| Field | Description |
|---|---|
extraArgs [Required]map[string]string
|
- `extraArgs` is an extra set of flags to pass to a control plane component.
+
|
+without leading dash(es).
+
extraVolumes [Required][]HostPathMount
|
- `extraVolumes` is an extra set of host volumes mounted to the control plane -component. | +
DNS defines the DNS addon that should be used in the cluster
+| Field | Description |
|---|---|
type [Required]DNSAddOnType
|
- `type` defines the DNS add-on to be used. | +
ImageMeta [Required]ImageMeta
|
(Members of ImageMeta are embedded into this type.)
- ImageMeta allows to customize the image used for the DNS component |
+
DNSAddOnType defines string identifying DNS add-on types.
+ ## `Discovery` {#kubeadm-k8s-io-v1beta2-Discovery} - - **Appears in:** + - [JoinConfiguration](#kubeadm-k8s-io-v1beta2-JoinConfiguration) -Discovery specifies the options for the kubelet to use during the TLS Bootstrap process +Discovery specifies the options for the kubelet to use during the TLS Bootstrap process
+| Field | Description |
|---|---|
bootstrapToken [Required]BootstrapTokenDiscovery
|
- `bootstrapToken` is used to set the options for bootstrap token based discovery. -`bootstrapToken` and `file` are mutually exclusive. | +
file [Required]FileDiscovery
|
- `file` is used to specify a file or URL to a kubeconfig file from which to load
+
|
+
tlsBootstrapToken [Required]string
|
- `tlsBootstrapToken` is a token used for TLS bootstrapping. -If `bootstrapToken` is set, this field is defaulted to `.bootstrapToken.token, -but can be overridden. -If `file` is set, this field ∗∗must be set∗∗ in case the KubeConfigFile does not -contain any other authentication information. | +
timeout [Required]- meta/v1.Duration
+meta/v1.Duration
|
- `timeout` modifies the discovery timeout. | +
Etcd contains elements describing Etcd configuration.
+| Field | Description |
|---|---|
local [Required]LocalEtcd
|
- `local` provides configuration knobs for configuring the local etcd instance. -`local` and `external` are mutually exclusive. | +
external [Required]ExternalEtcd
|
- `external` describes how to connect to an external etcd cluster. -`local` and `external` are mutually exclusive. | +
ExternalEtcd describes an external etcd cluster. +Kubeadm has no knowledge of where certificate files live and they must be supplied.
+| Field | Description |
|---|---|
endpoints [Required][]string
|
- `endpoints` of etcd members. | +
caFile [Required]string
|
- `caFile` is an SSL Certificate Authority (CA) file used to secure etcd communication. -Required if using a TLS connection. | +
certFile [Required]string
|
- `certFile` is an SSL certification file used to secure etcd communication. -Required if using a TLS connection. | +
keyFile [Required]string
|
- `keyFile` is an SSL key file used to secure etcd communication. -Required if using a TLS connection. | +
FileDiscovery is used to specify a file or URL to a kubeconfig file from which to load cluster information
+| Field | Description |
|---|---|
kubeConfigPath [Required]string
|
- `kubeConfigPath` is used to specify the actual file path or URL to the kubeconfig file -from which to load cluster information. | +
HostPathMount contains elements describing volumes that are mounted from the host.
+| Field | Description |
|---|---|
name [Required]string
|
- `name` of the volume inside the Pod template. | +
hostPath [Required]string
|
- `hostPath` is the path in the host that will be mounted inside the Pod. | +
mountPath [Required]string
|
- `mountPath`is the path inside the Pod where hostPath volume will be mounted. | +
readOnly [Required]bool
|
- `readOnly` controls write access to the volume. | +
pathType [Required]core/v1.HostPathType
|
- `pathType` is the type of the HostPath. | +
ImageMeta allows to customize the image used for components that are not +originated from the Kubernetes/Kubernetes release process
+| Field | Description |
|---|---|
imageRepository [Required]string
|
- `mageRepository` sets the container registry to pull images from. -If not set, the `imageRepository` defined in ClusterConfiguration will be used. | +
imageTag [Required]string
|
- `imageTag` allows for specifying a tag for the image.
+
|
+version of the above components during upgrades.
+
JoinControlPlane contains elements describing an additional control plane instance +to be deployed on the joining node.
+| Field | Description |
|---|---|
localAPIEndpoint [Required]APIEndpoint
|
- `localAPIEndpoint` represents the endpoint of the API server instance -to be deployed on this node. | +
certificateKey [Required]string
|
- `certificateKey` is the key that is used for decryption of certificates after
+
|
+The corresponding encryption key is in the InitConfiguration.
+
LocalEtcd describes that kubeadm should run an etcd cluster locally.
+| Field | Description |
|---|---|
ImageMeta [Required]ImageMeta
|
(Members of ImageMeta are embedded into this type.)
- ImageMeta allows to customize the container used for etcd. |
+
dataDir [Required]string
|
- `dataDir` is the directory etcd will place its data. -Defaults to "/var/lib/etcd". | +
extraArgs [Required]map[string]string
|
- `extraArgs` are extra arguments provided to the etcd binary when run
+
|
+command line except without leading dash(es).
+
serverCertSANs [Required][]string
|
- `serverCertSANs` sets extra Subject Alternative Names (SANs) for the -etcd server signing certificate. | +
peerCertSANs [Required][]string
|
- `peerCertSANs` sets extra Subject Alternative Names (SANs) for the -etcd peer signing certificate. | +
Networking contains elements describing cluster's networking configuration
+| Field | Description |
|---|---|
serviceSubnet [Required]string
|
- `serviceSubnet` is the subnet used by kubernetes Services. Defaults to "10.96.0.0/12". | +
podSubnet [Required]string
|
- `podSubnet` is the subnet used by Pods. | +
dnsDomain [Required]string
|
- `dnsDomain` is the DNS domain used by kubernetes Services. Defaults to "cluster.local". | +
NodeRegistrationOptions holds fields that relate to registering a new control-plane +or node to the cluster, either via "kubeadm init" or "kubeadm join".
+| Field | Description |
|---|---|
name [Required]string
|
- `name` is the `.Metadata.Name` field of the Node API object that will be created
-in this `kubeadm init` or `kubeadm join` operation.
-This field is also used in the `CommonName` field of the kubelet's client certificate
+
|
+Defaults to the hostname of the node if not provided.
+
criSocket [Required]string
|
- `criSocket is used to retrieve container runtime information. This information will -be annotated to the Node API object, for later re-use. | +
taints [Required][]core/v1.Taint
|
- `taints` specifies the taints the Node API object should be registered with. -If this field is unset, i.e. nil, in the `kubeadm init` process it will be defaulted to -`'node-role.kubernetes.io/master=""'`. If you don't want to taint your control-plane node, -set this field to an empty list, i.e. `taints: []` in the YAML file. This field is -solely used for Node registration. | +
kubeletExtraArgs [Required]map[string]string
|
- `kubeletExtraArgs` passes through extra arguments to the kubelet. The arguments here are
+
|
+A key in this map is the flag name as it appears on the command line except without leading dash(es).
+
ignorePreflightErrors [Required][]string
|
- `ignorePreflightErrors` provides a list of pre-flight errors to be ignored when the -current node is registered. | +
Package v1beta3 defines the v1beta3 version of the kubeadm configuration file format. +This version improves on the v1beta2 format by fixing some minor issues and adding a few new fields.
+A list of changes since v1beta2:
+Migration from old kubeadm config versions
+The preferred way to configure kubeadm is to pass an YAML configuration file with the --config option. Some of the
configuration options defined in the kubeadm config file are also available as command line flags, but only
-the most common/simple use case are supported with this approach.
-
-A kubeadm config file could contain multiple configuration types separated using three dashes (`---`).
-
-kubeadm supports the following configuration types:
-
-```yaml
-apiVersion: kubeadm.k8s.io/v1beta3
-kind: InitConfiguration
-
-apiVersion: kubeadm.k8s.io/v1beta3
-kind: ClusterConfiguration
-
-apiVersion: kubelet.config.k8s.io/v1beta1
-kind: KubeletConfiguration
-
-apiVersion: kubeproxy.config.k8s.io/v1alpha1
-kind: KubeProxyConfiguration
-
-apiVersion: kubeadm.k8s.io/v1beta3
-kind: JoinConfiguration
-```
-
-To print the defaults for "init" and "join" actions use the following commands:
-
-```shell
-kubeadm config print init-defaults
+the most common/simple use case are supported with this approach.
A kubeadm config file could contain multiple configuration types separated using three dashes (---).
kubeadm supports the following configuration types:
+apiVersion: kubeadm.k8s.io/v1beta3 +kind: InitConfiguration + +apiVersion: kubeadm.k8s.io/v1beta3 +kind: ClusterConfiguration + +apiVersion: kubelet.config.k8s.io/v1beta1 +kind: KubeletConfiguration + +apiVersion: kubeproxy.config.k8s.io/v1alpha1 +kind: KubeProxyConfiguration + +apiVersion: kubeadm.k8s.io/v1beta3 +kind: JoinConfiguration +
To print the defaults for "init" and "join" actions use the following commands:
+kubeadm config print init-defaults kubeadm config print join-defaults -``` - -The list of configuration types that must be included in a configuration file depends by the action you are -performing (`init` or `join`) and by the configuration options you are going to use (defaults or advanced -customization). - -If some configuration types are not provided, or provided only partially, kubeadm will use default values; defaults +
The list of configuration types that must be included in a configuration file depends by the action you are
+performing (init or join) and by the configuration options you are going to use (defaults or advanced
+customization).
If some configuration types are not provided, or provided only partially, kubeadm will use default values; defaults
provided by kubeadm includes also enforcing consistency of values across components when required (e.g.
-`--cluster-cidr` flag on controller manager and `clusterCIDR` on kube-proxy).
-
-Users are always allowed to override default values, with the only exception of a small subset of setting with
-relevance for security (e.g. enforce authorization-mode Node and RBAC on api server)
-
-If the user provides a configuration types that is not expected for the action you are performing, kubeadm will
-ignore those types and print a warning.
-
-## Kubeadm init configuration types
-
-When executing kubeadm init with the `--config` option, the following configuration types could be used:
+--cluster-cidr flag on controller manager and clusterCIDR on kube-proxy).
Users are always allowed to override default values, with the only exception of a small subset of setting with +relevance for security (e.g. enforce authorization-mode Node and RBAC on api server)
+If the user provides a configuration types that is not expected for the action you are performing, kubeadm will +ignore those types and print a warning.
+When executing kubeadm init with the --config option, the following configuration types could be used:
InitConfiguration, ClusterConfiguration, KubeProxyConfiguration, KubeletConfiguration, but only one
-between InitConfiguration and ClusterConfiguration is mandatory.
-
-```yaml
-apiVersion: kubeadm.k8s.io/v1beta3
-kind: InitConfiguration
-bootstrapTokens:
- ...
-nodeRegistration:
- ...
-```
-
-The InitConfiguration type should be used to configure runtime settings, that in case of kubeadm init
+between InitConfiguration and ClusterConfiguration is mandatory.
apiVersion: kubeadm.k8s.io/v1beta3 +kind: InitConfiguration +bootstrapTokens: + ... +nodeRegistration: + ... +
The InitConfiguration type should be used to configure runtime settings, that in case of kubeadm init are the configuration of the bootstrap token and all the setting which are specific to the node where -kubeadm is executed, including: - -- NodeRegistration, that holds fields that relate to registering the new node to the cluster; - use it to customize the node name, the CRI socket to use or any other settings that should apply to this - node only (e.g. the node ip). - -- LocalAPIEndpoint, that represents the endpoint of the instance of the API server to be deployed on this node; - use it e.g. to customize the API server advertise address. - - ``` - apiVersion: kubeadm.k8s.io/v1beta3 - kind: ClusterConfiguration - networking: - ... - etcd: - ... - apiServer: - extraArgs: - ... - extraVolumes: - ... - ... - ``` - -The ClusterConfiguration type should be used to configure cluster-wide settings, -including settings for: - -- Networking, that holds configuration for the networking topology of the cluster; use it e.g. to customize - Pod subnet or services subnet. - -- Etcd configurations; use it e.g. to customize the local etcd or to configure the API server - for using an external etcd cluster. - -- kube-apiserver, kube-scheduler, kube-controller-manager configurations; use it to customize control-plane - components by adding customized setting or overriding kubeadm default settings. - - ```yaml - apiVersion: kubeproxy.config.k8s.io/v1alpha1 - kind: KubeProxyConfiguration - ... - ``` - -The KubeProxyConfiguration type should be used to change the configuration passed to kube-proxy instances -deployed in the cluster. If this object is not provided or provided only partially, kubeadm applies defaults. - -See https://kubernetes.io/docs/reference/command-line-tools-reference/kube-proxy/ or +kubeadm is executed, including:
+NodeRegistration, that holds fields that relate to registering the new node to the cluster; +use it to customize the node name, the CRI socket to use or any other settings that should apply to this +node only (e.g. the node ip).
+LocalAPIEndpoint, that represents the endpoint of the instance of the API server to be deployed on this node; +use it e.g. to customize the API server advertise address.
+apiVersion: kubeadm.k8s.io/v1beta3 +kind: ClusterConfiguration +networking: + ... +etcd: + ... +apiServer: + extraArgs: + ... + extraVolumes: + ... +... +
The ClusterConfiguration type should be used to configure cluster-wide settings, +including settings for:
+networking that holds configuration for the networking topology of the cluster; use it e.g. to customize
+Pod subnet or services subnet.
etcd: use it e.g. to customize the local etcd or to configure the API server
+for using an external etcd cluster.
kube-apiserver, kube-scheduler, kube-controller-manager configurations; use it to customize control-plane +components by adding customized setting or overriding kubeadm default settings.
+apiVersion: kubeproxy.config.k8s.io/v1alpha1 +kind: KubeProxyConfiguration + ... +
The KubeProxyConfiguration type should be used to change the configuration passed to kube-proxy instances +deployed in the cluster. If this object is not provided or provided only partially, kubeadm applies defaults.
+See https://kubernetes.io/docs/reference/command-line-tools-reference/kube-proxy/ or https://godoc.org/k8s.io/kube-proxy/config/v1alpha1#KubeProxyConfiguration -for kube-proxy official documentation. - -```yaml -apiVersion: kubelet.config.k8s.io/v1beta1 -kind: KubeletConfiguration - ... -``` - -The KubeletConfiguration type should be used to change the configurations that will be passed to all kubelet instances -deployed in the cluster. If this object is not provided or provided only partially, kubeadm applies defaults. - -See https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet/ or +for kube-proxy official documentation.
+apiVersion: kubelet.config.k8s.io/v1beta1 +kind: KubeletConfiguration + ... +
The KubeletConfiguration type should be used to change the configurations that will be passed to all kubelet instances +deployed in the cluster. If this object is not provided or provided only partially, kubeadm applies defaults.
+See https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet/ or https://godoc.org/k8s.io/kubelet/config/v1beta1#KubeletConfiguration -for kubelet official documentation. - -Here is a fully populated example of a single YAML file containing multiple -configuration types to be used during a `kubeadm init` run. - -```yaml -apiVersion: kubeadm.k8s.io/v1beta3 -kind: InitConfiguration -bootstrapTokens: -- token: "9a08jv.c0izixklcxtmnze7" - description: "kubeadm bootstrap token" - ttl: "24h" -- token: "783bde.3f89s0fje9f38fhf" - description: "another bootstrap token" - usages: - - authentication - - signing - groups: - - system:bootstrappers:kubeadm:default-node-token -nodeRegistration: - name: "ec2-10-100-0-1" - criSocket: "/var/run/dockershim.sock" - taints: - - key: "kubeadmNode" - value: "master" - effect: "NoSchedule" - kubeletExtraArgs: - v: 4 -ignorePreflightErrors: -- IsPrivilegedUser - imagePullPolicy: "IfNotPresent" -localAPIEndpoint: - advertiseAddress: "10.100.0.1" - bindPort: 6443 -certificateKey: "e6a2eb8581237ab72a4f494f30285ec12a9694d750b9785706a83bfcbbbd2204" - skipPhases: - - addon/kube-proxy ---- -apiVersion: kubeadm.k8s.io/v1beta3 -kind: ClusterConfiguration -etcd: - # one of local or external - local: - imageRepository: "k8s.gcr.io" - imageTag: "3.2.24" - dataDir: "/var/lib/etcd" - extraArgs: - listen-client-urls: "http://10.100.0.1:2379" - serverCertSANs: - - "ec2-10-100-0-1.compute-1.amazonaws.com" - peerCertSANs: - - "10.100.0.1" - # external: - # endpoints: - # - "10.100.0.1:2379" - # - "10.100.0.2:2379" - # caFile: "/etcd/kubernetes/pki/etcd/etcd-ca.crt" - # certFile: "/etcd/kubernetes/pki/etcd/etcd.crt" - # keyFile: "/etcd/kubernetes/pki/etcd/etcd.key" -networking: - serviceSubnet: "10.96.0.0/16" - podSubnet: "10.244.0.0/24" - dnsDomain: "cluster.local" -kubernetesVersion: "v1.21.0" -controlPlaneEndpoint: "10.100.0.1:6443" -apiServer: - extraArgs: - authorization-mode: "Node,RBAC" - extraVolumes: - - name: "some-volume" - hostPath: "/etc/some-path" - mountPath: "/etc/some-pod-path" - readOnly: false - pathType: File - certSANs: - - "10.100.1.1" - - "ec2-10-100-0-1.compute-1.amazonaws.com" - timeoutForControlPlane: 4m0s -controllerManager: - extraArgs: - "node-cidr-mask-size": "20" - extraVolumes: - - name: "some-volume" - hostPath: "/etc/some-path" - mountPath: "/etc/some-pod-path" - readOnly: false - pathType: File -scheduler: - extraArgs: - address: "10.100.0.1" - extraVolumes: - - name: "some-volume" - hostPath: "/etc/some-path" - mountPath: "/etc/some-pod-path" - readOnly: false - pathType: File -certificatesDir: "/etc/kubernetes/pki" -imageRepository: "k8s.gcr.io" -clusterName: "example-cluster" ---- -apiVersion: kubelet.config.k8s.io/v1beta1 -kind: KubeletConfiguration -# kubelet specific options here ---- -apiVersion: kubeproxy.config.k8s.io/v1alpha1 -kind: KubeProxyConfiguration -# kube-proxy specific options here -``` - -## Kubeadm join configuration types - -When executing `kubeadm join` with the `--config` option, the JoinConfiguration type should be provided. - -```yaml -apiVersion: kubeadm.k8s.io/v1beta3 -kind: JoinConfiguration - ... -``` - -The JoinConfiguration type should be used to configure runtime settings, that in case of `kubeadm join` +for kubelet official documentation.
+Here is a fully populated example of a single YAML file containing multiple
+configuration types to be used during a kubeadm init run.
apiVersion: kubeadm.k8s.io/v1beta3 +kind: InitConfiguration +bootstrapTokens: +- token: "9a08jv.c0izixklcxtmnze7" + description: "kubeadm bootstrap token" + ttl: "24h" +- token: "783bde.3f89s0fje9f38fhf" + description: "another bootstrap token" + usages: + - authentication + - signing + groups: + - system:bootstrappers:kubeadm:default-node-token +nodeRegistration: + name: "ec2-10-100-0-1" + criSocket: "/var/run/dockershim.sock" + taints: + - key: "kubeadmNode" + value: "master" + effect: "NoSchedule" + kubeletExtraArgs: + v: 4 +ignorePreflightErrors: +- IsPrivilegedUser + imagePullPolicy: "IfNotPresent" +localAPIEndpoint: + advertiseAddress: "10.100.0.1" + bindPort: 6443 +certificateKey: "e6a2eb8581237ab72a4f494f30285ec12a9694d750b9785706a83bfcbbbd2204" + skipPhases: + - addon/kube-proxy +--- +apiVersion: kubeadm.k8s.io/v1beta3 +kind: ClusterConfiguration +etcd: + # one of local or external + local: + imageRepository: "k8s.gcr.io" + imageTag: "3.2.24" + dataDir: "/var/lib/etcd" + extraArgs: + listen-client-urls: "http://10.100.0.1:2379" + serverCertSANs: + - "ec2-10-100-0-1.compute-1.amazonaws.com" + peerCertSANs: + - "10.100.0.1" + # external: + # endpoints: + # - "10.100.0.1:2379" + # - "10.100.0.2:2379" + # caFile: "/etcd/kubernetes/pki/etcd/etcd-ca.crt" + # certFile: "/etcd/kubernetes/pki/etcd/etcd.crt" + # keyFile: "/etcd/kubernetes/pki/etcd/etcd.key" +networking: + serviceSubnet: "10.96.0.0/16" + podSubnet: "10.244.0.0/24" + dnsDomain: "cluster.local" +kubernetesVersion: "v1.21.0" +controlPlaneEndpoint: "10.100.0.1:6443" +apiServer: + extraArgs: + authorization-mode: "Node,RBAC" + extraVolumes: + - name: "some-volume" + hostPath: "/etc/some-path" + mountPath: "/etc/some-pod-path" + readOnly: false + pathType: File + certSANs: + - "10.100.1.1" + - "ec2-10-100-0-1.compute-1.amazonaws.com" + timeoutForControlPlane: 4m0s +controllerManager: + extraArgs: + "node-cidr-mask-size": "20" + extraVolumes: + - name: "some-volume" + hostPath: "/etc/some-path" + mountPath: "/etc/some-pod-path" + readOnly: false + pathType: File +scheduler: + extraArgs: + address: "10.100.0.1" + extraVolumes: + - name: "some-volume" + hostPath: "/etc/some-path" + mountPath: "/etc/some-pod-path" + readOnly: false + pathType: File +certificatesDir: "/etc/kubernetes/pki" +imageRepository: "k8s.gcr.io" +clusterName: "example-cluster" +--- +apiVersion: kubelet.config.k8s.io/v1beta1 +kind: KubeletConfiguration +# kubelet specific options here +--- +apiVersion: kubeproxy.config.k8s.io/v1alpha1 +kind: KubeProxyConfiguration +# kube-proxy specific options here +
When executing kubeadm join with the --config option, the JoinConfiguration type should be provided.
apiVersion: kubeadm.k8s.io/v1beta3 +kind: JoinConfiguration + ... +
The JoinConfiguration type should be used to configure runtime settings, that in case of kubeadm join
are the discovery method used for accessing the cluster info and all the setting which are specific
-to the node where kubeadm is executed, including:
+to the node where kubeadm is executed, including:
nodeRegistration, that holds fields that relate to registering the new node to the cluster;
+use it to customize the node name, the CRI socket to use or any other settings that should apply to this
+node only (e.g. the node ip).
apiEndpoint, that represents the endpoint of the instance of the API server to be eventually deployed on this node.
ClusterConfiguration contains cluster-wide configuration for a kubeadm cluster
-ClusterConfiguration contains cluster-wide configuration for a kubeadm cluster -| Field | Description |
|---|---|
apiVersionstring | kubeadm.k8s.io/v1beta3 |
kindstring | ClusterConfiguration |
etcdEtcd
|
- `etcd` holds the configuration for etcd. | +
networkingNetworking
|
- `networking` holds configuration for the networking topology of the cluster. | +
kubernetesVersionstring
|
- `kubernetesVersion` is the target version of the control plane. | +
controlPlaneEndpointstring
|
- `controlPlaneEndpoint` sets a stable IP address or DNS name for the control plane.
+
|
+In case the
apiServerAPIServer
|
- `apiServer` contains extra settings for the API server. | +
controllerManagerControlPlaneComponent
|
- `controllerManager` contains extra settings for the controller manager. | +
schedulerControlPlaneComponent
|
- `scheduler` contains extra settings for the scheduler. | +
dnsDNS
|
- `dns` defines the options for the DNS add-on installed in the cluster. | +
certificatesDirstring
|
- `certificatesDir` specifies where to store or look for all required certificates. | +
imageRepositorystring
|
- `imageRepository` sets the container registry to pull images from. -If empty, `k8s.gcr.io` will be used by default. -In case of kubernetes version is a CI build (kubernetes version starts with `ci/`) -`gcr.io/k8s-staging-ci-images` will be used as a default for control plane components -and for kube-proxy, while `k8s.gcr.io` will be used for all the other images. | +
featureGatesmap[string]bool
|
- `featureGates` contains the feature gates enabled by the user. | +
clusterNamestring
|
- The cluster name. | +
InitConfiguration contains a list of elements that is specific "kubeadm init"-only runtime
+information.
+kubeadm init-only information. These fields are solely used the first time kubeadm init runs.
+After that, the information in the fields IS NOT uploaded to the kubeadm-config ConfigMap
+that is used by kubeadm upgrade for instance. These fields must be omitempty.
| Field | Description |
|---|---|
apiVersionstring | kubeadm.k8s.io/v1beta3 |
kindstring | InitConfiguration |
bootstrapTokens+ []BootstrapToken
+ |
+
+
|
+
nodeRegistration+ NodeRegistrationOptions
+ |
+
+
|
+
localAPIEndpoint+ APIEndpoint
+ |
+
+
|
+
certificateKey+ string
+ |
+
+
|
+
skipPhases+ []string
+ |
+
+
|
+
patches+ Patches
+ |
+
+
|
+
| Field | Description |
|---|---|
apiVersionstring | kubeadm.k8s.io/v1beta3 |
kindstring | JoinConfiguration |
nodeRegistrationNodeRegistrationOptions
|
- `nodeRegistration` holds fields that relate to registering the new -control-plane node to the cluster. | +
caCertPathstring
|
- `caCertPath` is the path to the SSL certificate authority used to secure
+
|
+Defaults to "/etc/kubernetes/pki/ca.crt".
+
discovery [Required]Discovery
|
- `discovery` specifies the options for the kubelet to use during the TLS -bootstrap process. | +
controlPlaneJoinControlPlane
|
- `controlPlane` defines the additional control plane instance to be deployed -on the joining node. If nil, no additional control plane instance will be deployed. | +
skipPhases[]string
|
- `skipPhases` is a list of phases to skip during command execution. -The list of phases can be obtained with the `kubeadm join --help` command. -The flag `--skip-phases` takes precedence over this field. | +
patchesPatches
|
- `patches` contains options related to applying patches to components deployed -by kubeadm during `kubeadm join`. | +
APIEndpoint struct contains elements of API server instance deployed on a node.
+| Field | Description |
|---|---|
advertiseAddressstring
|
- `advertiseAddress` sets the IP address for the API server to advertise. | +
bindPortint32
|
- `bindPorti` sets the secure port for the API Server to bind to. -Defaults to 6443. | +
APIServer holds settings necessary for API server deployments in the cluster
+| Field | Description |
|---|---|
ControlPlaneComponent [Required]ControlPlaneComponent
|
(Members of ControlPlaneComponent are embedded into this type.)
- No description provided.
- |
+ No description provided.
certSANs[]string
|
- `certSANs` sets extra Subject Alternative Names (SANs) for the API Server signing -certificate. | +
timeoutForControlPlane- meta/v1.Duration
+meta/v1.Duration
|
- `timeoutForControlPlane` controls the timeout that we wait for API server to appear. | +
BootstrapTokenDiscovery is used to set the options for bootstrap token based discovery
+| Field | Description |
|---|---|
token [Required]string
|
- `token` is a token used to validate cluster information fetched from the -control-plane. | +
apiServerEndpointstring
|
- `apiServerEndpoint` is an IP or domain name to the API server from which -information will be fetched. | +
caCertHashes[]string
|
- `caCertHashes` specifies a set of public key pins to verify when token-based discovery
+
|
+Each hash is specified as ":", where the only currently supported type is
+"sha256". This is a hex-encoded SHA-256 hash of the Subject Public Key Info (SPKI)
+object in DER-encoded ASN.1. These hashes can be calculated using, for example, OpenSSL.
+
unsafeSkipCAVerificationbool
|
- `unsafeSkipCAVerification` allows token-based discovery without CA verification -via `caCertHashes`. This can weaken the security of kubeadm since other nodes can -impersonate the control-plane. | +
ControlPlaneComponent holds settings common to control plane component of the cluster
+| Field | Description |
|---|---|
extraArgsmap[string]string
|
- `extraArgs` is an extra set of flags to pass to the control plane component.
+
|
+without leading dash(es).
+
extraVolumes[]HostPathMount
|
- `extraVolumes` is an extra set of host volumes, mounted to the control plane component. | +
DNS defines the DNS addon that should be used in the cluster
+| Field | Description |
|---|---|
ImageMeta [Required]ImageMeta
|
(Members of ImageMeta are embedded into this type.)
- `imageMeta` allows to customize the image used for the DNS component. |
+
Discovery specifies the options for the kubelet to use during the TLS Bootstrap process.
+| Field | Description |
|---|---|
bootstrapTokenBootstrapTokenDiscovery
|
- `bootstrapToken` is used to set the options for bootstrap token based discovery. -`bootstrapToken` and `file` are mutually exclusive. | +
fileFileDiscovery
|
- `file` is used to specify a file or URL to a kubeconfig file from which to load
+
|
+
tlsBootstrapTokenstring
|
- `tlsBootstrapToken` is a token used for TLS bootstrapping. -If `bootstrapToken` is set, this field is defaulted to `.bootstrapToken.token`, but -can be overridden. If `file` is set, this field ∗∗must be set∗∗ in case the KubeConfigFile -does not contain any other authentication information | +
timeout- meta/v1.Duration
+meta/v1.Duration
|
- `timeout` modifies the discovery timeout. | +
Etcd contains elements describing Etcd configuration.
+| Field | Description |
|---|---|
localLocalEtcd
|
- `local` provides configuration knobs for configuring the local etcd instance. -`local` and `external` are mutually exclusive. | +
externalExternalEtcd
|
- `external` describes how to connect to an external etcd cluster. -`local` and `external` are mutually exclusive. | +
ExternalEtcd describes an external etcd cluster. +Kubeadm has no knowledge of where certificate files live and they must be supplied.
+| Field | Description |
|---|---|
endpoints [Required][]string
|
- `endpoints` contains the list of etcd members. | +
caFile [Required]string
|
- `caFile` is an SSL Certificate Authority (CA) file used to secure etcd communication. -Required if using a TLS connection. | +
certFile [Required]string
|
- `certFile` is an SSL certification file used to secure etcd communication. -Required if using a TLS connection. | +
keyFile [Required]string
|
- `keyFile` is an SSL key file used to secure etcd communication. -Required if using a TLS connection. | +
FileDiscovery is used to specify a file or URL to a kubeconfig file from which to load +cluster information.
+| Field | Description |
|---|---|
kubeConfigPath [Required]string
|
- `kubeConfigPath` is used to specify the actual file path or URL to the kubeconfig -file from which to load cluster information. | +
HostPathMount contains elements describing volumes that are mounted from the host.
+| Field | Description |
|---|---|
name [Required]string
|
- `name` is the name of the volume inside the Pod template. | +
hostPath [Required]string
|
- `hostPath` is the path in the host that will be mounted inside the Pod. | +
mountPath [Required]string
|
- `mountPath` is the path inside the Pod where `hostPath` will be mounted. | +
readOnlybool
|
- `readOnly` controls write access to the volume. | +
pathTypecore/v1.HostPathType
|
- `pathType` is the type of the `hostPath`. | +
ImageMeta allows to customize the image used for components that are not +originated from the Kubernetes/Kubernetes release process
+| Field | Description |
|---|---|
imageRepositorystring
|
- `imageRepository` sets the container registry to pull images from. -If not set, the `imageRepository` defined in ClusterConfiguration will be used instead. | +
imageTagstring
|
- `imageTag` allows to specify a tag for the image.
+
|
+the above components during upgrades.
+
JoinControlPlane contains elements describing an additional control plane instance +to be deployed on the joining node.
+| Field | Description |
|---|---|
localAPIEndpointAPIEndpoint
|
- `localAPIEndpoint` represents the endpoint of the API server instance to be -deployed on this node. | +
certificateKeystring
|
- `certificateKey` is the key that is used for decryption of certificates after
+
|
+The corresponding encryption key is in the InitConfiguration.
+
LocalEtcd describes that kubeadm should run an etcd cluster locally
+| Field | Description |
|---|---|
ImageMeta [Required]ImageMeta
|
(Members of ImageMeta are embedded into this type.)
- ImageMeta allows to customize the container used for etcd. |
+
dataDir [Required]string
|
- `dataDir` is the directory etcd will place its data. -Defaults to "/var/lib/etcd". | +
extraArgsmap[string]string
|
- `extraArgs` are extra arguments provided to the etcd binary when run
+
|
+command line except without leading dash(es).
+
serverCertSANs[]string
|
- `serverCertSANs` sets extra Subject Alternative Names (SANs) for the etcd -server signing certificate. | +
peerCertSANs[]string
|
- `peerCertSANs` sets extra Subject Alternative Names (SANs) for the etcd peer -signing certificate. | +
Networking contains elements describing cluster's networking configuration
+| Field | Description |
|---|---|
serviceSubnetstring
|
- `serviceSubnet` is the subnet used by Kubernetes Services. Defaults to "10.96.0.0/12". | +
podSubnetstring
|
- `podSubnet` is the subnet used by Pods. | +
dnsDomainstring
|
- `dnsDomain` is the DNS domain used by Kubernetes Services. Defaults to "cluster.local". | +
NodeRegistrationOptions holds fields that relate to registering a new control-plane or +node to the cluster, either via "kubeadm init" or "kubeadm join"
+| Field | Description |
|---|---|
namestring
|
- `name` is the `.metadata.name` field of the Node API object that will be created in this
-`kubeadm init` or `kubeadm join` operation.
-This field is also used in the `CommonName` field of the kubelet's client certificate to
+
|
+Defaults to the hostname of the node if not provided.
+
criSocketstring
|
- `criSocket` is used to retrieve container runtime info. -This information will be annotated to the Node API object, for later re-use | +
taints [Required][]core/v1.Taint
|
- `tains` specifies the taints the Node API object should be registered with.
-If this field is unset, i.e. nil, in the `kubeadm init` process it will be defaulted to
-`taints: ["node-role.kubernetes.io/master:""]`.
+
|
+i.e.
kubeletExtraArgsmap[string]string
|
- `kubeletExtraArgs` passes through extra arguments to the kubelet.
+
|
+command line except without leading dash(es).
+
ignorePreflightErrors[]string
|
- `ignorePreflightErrors` provides a list of pre-flight errors to be ignored when -the current node is registered. | +
imagePullPolicycore/v1.PullPolicy
|
- `imagePullPolicy` specifies the policy for image pulling during kubeadm "init" and -"join" operations. -The value of this field must be one of "Always", "IfNotPresent" or "Never". -If this field is unset kubeadm will default it to "IfNotPresent", or pull the required -images if not present on the host. | +
Patches contains options related to applying patches to components deployed by kubeadm.
+| Field | Description |
|---|---|
directorystring
|
- `directory` is a path to a directory that contains files named
-"target[suffix][+patchtype].extension".
-For example, "kube-apiserver0+merge.yaml" or just "etcd.json". "target" can be one of
-"kube-apiserver", "kube-controller-manager", "kube-scheduler", "etcd". "patchtype" can
-be one of "strategic" "merge" or "json" and they match the patch formats supported by
+
|
+The default "patchtype" is "strategic". "extension" must be either "json" or "yaml".
+"suffix" is an optional string that can be used to determine which patches are applied
+first alpha-numerically.
+
BootstrapToken describes one bootstrap token, stored as a Secret in the cluster
-BootstrapToken describes one bootstrap token, stored as a Secret in the cluster| Field | Description |
|---|---|
token [Required]BootstrapTokenString
|
- `token` is used for establishing bidirectional trust between nodes and control-planes. -Used for joining nodes in the cluster. | +
descriptionstring
|
- `description` sets a human-friendly message why this token exists and what it's used -for, so other administrators can know its purpose. | +
ttl- meta/v1.Duration
+meta/v1.Duration
|
- `ttl` defines the time to live for this token. Defaults to `24h`. -`expires` and `ttl` are mutually exclusive. | +
expiresmeta/v1.Time
|
- `expires` specifies the timestamp when this token expires. Defaults to being set -dynamically at runtime based on the `ttl`. `expires` and `ttl` are mutually exclusive. | +
usages[]string
|
- `usages` describes the ways in which this token can be used. Can by default be used -for establishing bidirectional trust, but that can be changed here. | +
groups[]string
|
- `groups` specifies the extra groups that this token will authenticate as when/if -used for authentication | +
BootstrapTokenString is a token of the format abcdef.abcdef0123456789 that is used
for both validation of the practically of the API server from a joining node's point
of view and as an authentication method for the node in the bootstrap phase of
-"kubeadm join". This token is and should be short-lived.
+"kubeadm join". This token is and should be short-lived.
| Field | Description |
|---|---|
- [Required]string
|
- No description provided. - | + No description provided.
- [Required]string
|
- No description provided. - | + No description provided.
| Field | Description |
|---|---|
json [Required]- JSONOptions
- |
-- [Experimental] JSON contains options for logging format "json". | -
| Field | Description |
|---|---|
splitStream [Required]- bool
- |
-- [Experimental] SplitStream redirects error messages to stderr while -info messages go to stdout, with buffering. The default is to write -both to stdout, without buffering. | -
infoBufferSize [Required]- k8s.io/apimachinery/pkg/api/resource.QuantityValue
- |
-- [Experimental] InfoBufferSize sets the size of the info stream when -using split streams. The default is zero, which disables buffering. | -
CredentialProviderConfig is the configuration containing information about each exec credential provider. Kubelet reads this configuration from disk and enables -each provider as specified by the CredentialProvider type. +each provider as specified by the CredentialProvider type.
+| Field | Description |
|---|---|
apiVersionstring | kubelet.config.k8s.io/v1alpha1 |
kindstring | CredentialProviderConfig |
providers [Required][]CredentialProvider
|
- providers is a list of credential provider plugins that will be enabled by the kubelet.
+ providers is a list of credential provider plugins that will be enabled by the kubelet. Multiple providers may match against a single image, in which case credentials from all providers will be returned to the kubelet. If multiple providers are called for a single image, the results are combined. If providers return overlapping -auth keys, the value from the provider earlier in this list is used. |
+auth keys, the value from the provider earlier in this list is used.
+
CredentialProvider represents an exec plugin to be invoked by the kubelet. The plugin is only +invoked when an image being pulled matches the images handled by the plugin (see matchImages).
+| Field | Description |
|---|---|
name [Required]string
|
- name is the required name of the credential provider. It must match the name of the
+ name is the required name of the credential provider. It must match the name of the provider executable as seen by the kubelet. The executable must be in the kubelet's -bin directory (set by the --image-credential-provider-bin-dir flag). |
+bin directory (set by the --image-credential-provider-bin-dir flag).
+
matchImages [Required][]string
|
- matchImages is a required list of strings used to match against images in order to
+ matchImages is a required list of strings used to match against images in order to determine if this provider should be invoked. If one of the strings matches the requested image from the kubelet, the plugin will be invoked and given a chance to provide credentials. Images are expected to contain the registry domain -and URL path. - -Each entry in matchImages is a pattern which can optionally contain a port and a path. +and URL path. +Each entry in matchImages is a pattern which can optionally contain a port and a path. Globs can be used in the domain, but not in the port or the path. Globs are supported -as subdomains like '∗.k8s.io' or 'k8s.∗.io', and top-level-domains such as 'k8s.∗'. -Matching partial subdomains like 'app∗.k8s.io' is also supported. Each glob can only match -a single subdomain segment, so ∗.io does not match ∗.k8s.io. - -A match exists between an image and a matchImage when all of the below are true: -- Both contain the same number of domain parts and each part matches. -- The URL path of an imageMatch must be a prefix of the target image URL path. -- If the imageMatch contains a port, then the port must match in the image as well. - -Example values of matchImages: - - 123456789.dkr.ecr.us-east-1.amazonaws.com - - ∗.azurecr.io - - gcr.io - - ∗.∗.registry.io - - registry.io:8080/path |
+as subdomains like '.k8s.io' or 'k8s..io', and top-level-domains such as 'k8s.'.
+Matching partial subdomains like 'app.k8s.io' is also supported. Each glob can only match
+a single subdomain segment, so *.io does not match *.k8s.io.
+
defaultCacheDuration [Required]- meta/v1.Duration
+meta/v1.Duration
|
- defaultCacheDuration is the default duration the plugin will cache credentials in-memory -if a cache duration is not provided in the plugin response. This field is required. | +
apiVersion [Required]string
|
- Required input version of the exec CredentialProviderRequest. The returned CredentialProviderResponse -MUST use the same encoding version as the input. Current supported values are: -- credentialprovider.kubelet.k8s.io/v1alpha1 | +
args[]string
|
- Arguments to pass to the command when executing it. | +
env[]ExecEnvVar
|
- Env defines additional environment variables to expose to the process. These
+ Env defines additional environment variables to expose to the process. These are unioned with the host's environment, as well as variables client-go uses -to pass argument to the plugin. |
+to pass argument to the plugin.
+
ExecEnvVar is used for setting environment variables when executing an exec-based +credential plugin.
+| Field | Description |
|---|---|
name [Required]string
|
- No description provided. - | + No description provided.
value [Required]string
|
- No description provided. - | + No description provided.
FormatOptions contains options for the different logging formats.
+ + +| Field | Description |
|---|---|
json [Required]+ JSONOptions
+ |
+
+ [Experimental] JSON contains options for logging format "json". + |
+
JSONOptions contains options for logging format "json".
+ + +| Field | Description |
|---|---|
splitStream [Required]+ bool
+ |
+
+ [Experimental] SplitStream redirects error messages to stderr while +info messages go to stdout, with buffering. The default is to write +both to stdout, without buffering. + |
+
infoBufferSize [Required]+ k8s.io/apimachinery/pkg/api/resource.QuantityValue
+ |
+
+ [Experimental] InfoBufferSize sets the size of the info stream when +using split streams. The default is zero, which disables buffering. + |
+
VModuleConfiguration is a collection of individual file names or patterns +and the corresponding verbosity threshold.
+ + + diff --git a/content/en/docs/reference/config-api/kubelet-config.v1beta1.md b/content/en/docs/reference/config-api/kubelet-config.v1beta1.md index c299c56470..9fc2bbfde0 100644 --- a/content/en/docs/reference/config-api/kubelet-config.v1beta1.md +++ b/content/en/docs/reference/config-api/kubelet-config.v1beta1.md @@ -14,175 +14,13 @@ auto_generated: true -## `FormatOptions` {#FormatOptions} - - - - -**Appears in:** -- [LoggingConfiguration](#LoggingConfiguration) - - -FormatOptions contains options for the different logging formats. - -| Field | Description |
|---|---|
json [Required]- JSONOptions
- |
-- [Experimental] JSON contains options for logging format "json". | -
| Field | Description |
|---|---|
splitStream [Required]- bool
- |
-- [Experimental] SplitStream redirects error messages to stderr while -info messages go to stdout, with buffering. The default is to write -both to stdout, without buffering. | -
infoBufferSize [Required]- k8s.io/apimachinery/pkg/api/resource.QuantityValue
- |
-- [Experimental] InfoBufferSize sets the size of the info stream when -using split streams. The default is zero, which disables buffering. | -
| Field | Description |
|---|---|
format [Required]- string
- |
-- Format Flag specifies the structure of log messages. -default value of format is `text` | -
flushFrequency [Required]- time.Duration
- |
-- Maximum number of seconds between log flushes. Ignored if the -selected logging backend writes log messages without buffering. | -
verbosity [Required]- uint32
- |
-- Verbosity is the threshold that determines which log messages are -logged. Default is zero which logs only the most important -messages. Higher values enable additional messages. Error messages -are always logged. | -
vmodule [Required]- VModuleConfiguration
- |
-- VModule overrides the verbosity threshold for individual files. -Only supported for "text" log format. | -
sanitization [Required]- bool
- |
-- [Experimental] When enabled prevents logging of fields tagged as sensitive (passwords, keys, tokens). -Runtime log sanitization may introduce significant computation overhead and therefore should not be enabled in production.`) | -
options [Required]- FormatOptions
- |
-- [Experimental] Options holds additional parameters that are specific -to the different logging formats. Only the options for the selected -format get used, but all of them get validated. | -
KubeletConfiguration contains the configuration for the Kubelet
-KubeletConfiguration contains the configuration for the Kubelet -| Field | Description |
|---|---|
apiVersionstring | kubelet.config.k8s.io/v1beta1 |
kindstring | KubeletConfiguration |
enableServer [Required]bool
|
- enableServer enables Kubelet's secured server.
+ enableServer enables Kubelet's secured server. Note: Kubelet's insecure port is controlled by the readOnlyPort option. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt components that interact with the Kubelet server. -Default: true |
+Default: true
+
staticPodPathstring
|
- staticPodPath is the path to the directory containing local (static) pods to
+ staticPodPath is the path to the directory containing local (static) pods to run, or the path to a single static pod file. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that the set of static pods specified at the new path may be different than the ones the Kubelet initially started with, and this may disrupt your node. -Default: "" |
+Default: ""
+
syncFrequency- meta/v1.Duration
+meta/v1.Duration
|
- syncFrequency is the max period between synchronizing running
+ syncFrequency is the max period between synchronizing running containers and config. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that shortening this duration may have a negative performance impact, especially as the number of Pods on the node increases. Alternatively, increasing this duration will result in longer refresh times for ConfigMaps and Secrets. -Default: "1m" |
+Default: "1m"
+
fileCheckFrequency- meta/v1.Duration
+meta/v1.Duration
|
- fileCheckFrequency is the duration between checking config files for
+ fileCheckFrequency is the duration between checking config files for new data. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that shortening the duration will cause the Kubelet to reload local Static Pod configurations more frequently, which may have a negative performance impact. -Default: "20s" |
+Default: "20s"
+
httpCheckFrequency- meta/v1.Duration
+meta/v1.Duration
|
- httpCheckFrequency is the duration between checking http for new data.
+ httpCheckFrequency is the duration between checking http for new data. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that shortening the duration will cause the Kubelet to poll staticPodURL more frequently, which may have a negative performance impact. -Default: "20s" |
+Default: "20s"
+
staticPodURLstring
|
- staticPodURL is the URL for accessing static pods to run.
+ staticPodURL is the URL for accessing static pods to run. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that the set of static pods specified at the new URL may be different than the ones the Kubelet initially started with, and this may disrupt your node. -Default: "" |
+Default: ""
+
staticPodURLHeadermap[string][]string
|
- staticPodURLHeader is a map of slices with HTTP headers to use when accessing the podURL.
+ staticPodURLHeader is a map of slices with HTTP headers to use when accessing the podURL. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt the ability to read the latest set of static pods from StaticPodURL. -Default: nil |
+Default: nil
+
addressstring
|
- address is the IP address for the Kubelet to serve on (set to 0.0.0.0
+ address is the IP address for the Kubelet to serve on (set to 0.0.0.0 for all interfaces). If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt components that interact with the Kubelet server. -Default: "0.0.0.0" |
+Default: "0.0.0.0"
+
portint32
|
- port is the port for the Kubelet to serve on.
+ port is the port for the Kubelet to serve on. The port number must be between 1 and 65535, inclusive. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt components that interact with the Kubelet server. -Default: 10250 |
+Default: 10250
+
readOnlyPortint32
|
- readOnlyPort is the read-only port for the Kubelet to serve on with
+ readOnlyPort is the read-only port for the Kubelet to serve on with no authentication/authorization. The port number must be between 1 and 65535, inclusive. Setting this field to 0 disables the read-only service. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt components that interact with the Kubelet server. -Default: 0 (disabled) |
+Default: 0 (disabled)
+
tlsCertFilestring
|
- tlsCertFile is the file containing x509 Certificate for HTTPS. (CA cert,
+ tlsCertFile is the file containing x509 Certificate for HTTPS. (CA cert, if any, concatenated after server cert). If tlsCertFile and tlsPrivateKeyFile are not provided, a self-signed certificate and key are generated for the public address and saved to the directory @@ -340,68 +166,63 @@ passed to the Kubelet's --cert-dir flag. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt components that interact with the Kubelet server. -Default: "" |
+Default: ""
+
tlsPrivateKeyFilestring
|
- tlsPrivateKeyFile is the file containing x509 private key matching tlsCertFile.
+ tlsPrivateKeyFile is the file containing x509 private key matching tlsCertFile. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt components that interact with the Kubelet server. -Default: "" |
+Default: ""
+
tlsCipherSuites[]string
|
- tlsCipherSuites is the list of allowed cipher suites for the server.
+ tlsCipherSuites is the list of allowed cipher suites for the server. Values are from tls package constants (https://golang.org/pkg/crypto/tls/#pkg-constants). If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt components that interact with the Kubelet server. -Default: nil |
+Default: nil
+
tlsMinVersionstring
|
- tlsMinVersion is the minimum TLS version supported.
+ tlsMinVersion is the minimum TLS version supported. Values are from tls package constants (https://golang.org/pkg/crypto/tls/#pkg-constants). If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt components that interact with the Kubelet server. -Default: "" |
+Default: ""
+
rotateCertificatesbool
|
- rotateCertificates enables client certificate rotation. The Kubelet will request a
+ rotateCertificates enables client certificate rotation. The Kubelet will request a new certificate from the certificates.k8s.io API. This requires an approver to approve the certificate signing requests. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that disabling it may disrupt the Kubelet's ability to authenticate with the API server after the current certificate expires. -Default: false |
+Default: false
+
serverTLSBootstrapbool
|
- serverTLSBootstrap enables server certificate bootstrap. Instead of self
+ serverTLSBootstrap enables server certificate bootstrap. Instead of self signing a serving certificate, the Kubelet will request a certificate from the 'certificates.k8s.io' API. This requires an approver to approve the certificate signing requests (CSR). The RotateKubeletServerCertificate feature @@ -411,63 +232,59 @@ dynamically updating this field, consider that disabling it will stop the renewal of Kubelet server certificates, which can disrupt components that interact with the Kubelet server in the long term, due to certificate expiration. -Default: false |
+Default: false
+
authenticationKubeletAuthentication
|
- authentication specifies how requests to the Kubelet's server are authenticated.
+ authentication specifies how requests to the Kubelet's server are authenticated. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt components that interact with the Kubelet server. Defaults: - anonymous: - enabled: false - webhook: - enabled: true - cacheTTL: "2m" |
+anonymous:
+enabled: false
+webhook:
+enabled: true
+cacheTTL: "2m"
+
authorizationKubeletAuthorization
|
- authorization specifies how requests to the Kubelet's server are authorized.
+ authorization specifies how requests to the Kubelet's server are authorized. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt components that interact with the Kubelet server. Defaults: - mode: Webhook - webhook: - cacheAuthorizedTTL: "5m" - cacheUnauthorizedTTL: "30s" |
+mode: Webhook
+webhook:
+cacheAuthorizedTTL: "5m"
+cacheUnauthorizedTTL: "30s"
+
registryPullQPSint32
|
- registryPullQPS is the limit of registry pulls per second.
+ registryPullQPS is the limit of registry pulls per second. The value must not be a negative number. Setting it to 0 means no limit. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact scalability by changing the amount of traffic produced by image pulls. -Default: 5 |
+Default: 5
+
registryBurstint32
|
- registryBurst is the maximum size of bursty pulls, temporarily allows
+ registryBurst is the maximum size of bursty pulls, temporarily allows pulls to burst to this number, while still not exceeding registryPullQPS. The value must not be a negative number. Only used if registryPullQPS is greater than 0. @@ -475,151 +292,140 @@ If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact scalability by changing the amount of traffic produced by image pulls. -Default: 10 |
+Default: 10
+
eventRecordQPSint32
|
- eventRecordQPS is the maximum event creations per second. If 0, there
+ eventRecordQPS is the maximum event creations per second. If 0, there is no limit enforced. The value cannot be a negative number. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact scalability by changing the amount of traffic produced by event creations. -Default: 5 |
+Default: 5
+
eventBurstint32
|
- eventBurst is the maximum size of a burst of event creations, temporarily
+ eventBurst is the maximum size of a burst of event creations, temporarily allows event creations to burst to this number, while still not exceeding eventRecordQPS. This field canot be a negative number and it is only used -when eventRecordQPS > 0. +when eventRecordQPS > 0. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact scalability by changing the amount of traffic produced by event creations. -Default: 10 |
+Default: 10
+
enableDebuggingHandlersbool
|
- enableDebuggingHandlers enables server endpoints for log access
+ enableDebuggingHandlers enables server endpoints for log access and local running of containers and commands, including the exec, attach, logs, and portforward features. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that disabling it may disrupt components that interact with the Kubelet server. -Default: true |
+Default: true
+
enableContentionProfilingbool
|
- enableContentionProfiling enables lock contention profiling, if enableDebuggingHandlers is true.
+ enableContentionProfiling enables lock contention profiling, if enableDebuggingHandlers is true. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that enabling it may carry a performance impact. -Default: false |
+Default: false
+
healthzPortint32
|
- healthzPort is the port of the localhost healthz endpoint (set to 0 to disable).
+ healthzPort is the port of the localhost healthz endpoint (set to 0 to disable). A valid number is between 1 and 65535. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt components that monitor Kubelet health. -Default: 10248 |
+Default: 10248
+
healthzBindAddressstring
|
- healthzBindAddress is the IP address for the healthz server to serve on.
+ healthzBindAddress is the IP address for the healthz server to serve on. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt components that monitor Kubelet health. -Default: "127.0.0.1" |
+Default: "127.0.0.1"
+
oomScoreAdjint32
|
- oomScoreAdj is The oom-score-adj value for kubelet process. Values
+ oomScoreAdj is The oom-score-adj value for kubelet process. Values must be within the range [-1000, 1000]. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact the stability of nodes under memory pressure. -Default: -999 |
+Default: -999
+
clusterDomainstring
|
- clusterDomain is the DNS domain for this cluster. If set, kubelet will
+ clusterDomain is the DNS domain for this cluster. If set, kubelet will configure all containers to search this domain in addition to the host's search domains. Dynamic Kubelet Config (deprecated): Dynamically updating this field is not recommended, as it should be kept in sync with the rest of the cluster. -Default: "" |
+Default: ""
+
clusterDNS[]string
|
- clusterDNS is a list of IP addresses for the cluster DNS server. If set,
+ clusterDNS is a list of IP addresses for the cluster DNS server. If set, kubelet will configure all containers to use this for DNS resolution instead of the host's DNS servers. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that changes will only take effect on Pods created after the update. Draining the node is recommended before changing this field. -Default: nil |
+Default: nil
+
streamingConnectionIdleTimeout- meta/v1.Duration
+meta/v1.Duration
|
- streamingConnectionIdleTimeout is the maximum time a streaming connection
+ streamingConnectionIdleTimeout is the maximum time a streaming connection can be idle before the connection is automatically closed. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact components that rely on infrequent updates over streaming connections to the Kubelet server. -Default: "4h" |
+Default: "4h"
+
nodeStatusUpdateFrequency- meta/v1.Duration
+meta/v1.Duration
|
- nodeStatusUpdateFrequency is the frequency that kubelet computes node
+ nodeStatusUpdateFrequency is the frequency that kubelet computes node status. If node lease feature is not enabled, it is also the frequency that kubelet posts node status to master. Note: When node lease feature is not enabled, be cautious when changing the @@ -627,33 +433,31 @@ constant, it must work with nodeMonitorGracePeriod in nodecontroller. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact node scalability, and also that the node controller's -nodeMonitorGracePeriod must be set to N∗NodeStatusUpdateFrequency, +nodeMonitorGracePeriod must be set to N*NodeStatusUpdateFrequency, where N is the number of retries before the node controller marks the node unhealthy. -Default: "10s" |
+Default: "10s"
+
nodeStatusReportFrequency- meta/v1.Duration
+meta/v1.Duration
|
- nodeStatusReportFrequency is the frequency that kubelet posts node
+ nodeStatusReportFrequency is the frequency that kubelet posts node status to master if node status does not change. Kubelet will ignore this frequency and post node status immediately if any change is detected. It is only used when node lease feature is enabled. nodeStatusReportFrequency's default value is 5m. But if nodeStatusUpdateFrequency is set explicitly, nodeStatusReportFrequency's default value will be set to nodeStatusUpdateFrequency for backward compatibility. -Default: "5m" |
+Default: "5m"
+
nodeLeaseDurationSecondsint32
|
- nodeLeaseDurationSeconds is the duration the Kubelet will set on its corresponding Lease.
+ nodeLeaseDurationSeconds is the duration the Kubelet will set on its corresponding Lease. NodeLease provides an indicator of node health by having the Kubelet create and periodically renew a lease, named after the node, in the kube-node-lease namespace. If the lease expires, the node can be considered unhealthy. @@ -664,27 +468,25 @@ If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that decreasing the duration may reduce tolerance for issues that temporarily prevent the Kubelet from renewing the lease (e.g. a short-lived network issue). -Default: 40 |
+Default: 40
+
imageMinimumGCAge- meta/v1.Duration
+meta/v1.Duration
|
- imageMinimumGCAge is the minimum age for an unused image before it is
+ imageMinimumGCAge is the minimum age for an unused image before it is garbage collected. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may trigger or delay garbage collection, and may change the image overhead on the node. -Default: "2m" |
+Default: "2m"
+
imageGCHighThresholdPercentint32
|
- imageGCHighThresholdPercent is the percent of disk usage after which
+ imageGCHighThresholdPercent is the percent of disk usage after which image garbage collection is always run. The percent is calculated by dividing this field value by 100, so this field must be between 0 and 100, inclusive. When specified, the value must be greater than @@ -693,15 +495,14 @@ If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may trigger or delay garbage collection, and may change the image overhead on the node. -Default: 85 |
+Default: 85
+
imageGCLowThresholdPercentint32
|
- imageGCLowThresholdPercent is the percent of disk usage before which
+ imageGCLowThresholdPercent is the percent of disk usage before which image garbage collection is never run. Lowest disk usage to garbage collect to. The percent is calculated by dividing this field value by 100, so the field value must be between 0 and 100, inclusive. When specified, the @@ -710,227 +511,211 @@ If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may trigger or delay garbage collection, and may change the image overhead on the node. -Default: 80 |
+Default: 80
+
volumeStatsAggPeriod- meta/v1.Duration
+meta/v1.Duration
|
- volumeStatsAggPeriod is the frequency for calculating and caching volume
+ volumeStatsAggPeriod is the frequency for calculating and caching volume disk usage for all pods. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that shortening the period may carry a performance impact. -Default: "1m" |
+Default: "1m"
+
kubeletCgroupsstring
|
- kubeletCgroups is the absolute name of cgroups to isolate the kubelet in
+ kubeletCgroups is the absolute name of cgroups to isolate the kubelet in Dynamic Kubelet Config (deprecated): This field should not be updated without a full node reboot. It is safest to keep this value the same as the local config. -Default: "" |
+Default: ""
+
systemCgroupsstring
|
- systemCgroups is absolute name of cgroups in which to place
+ systemCgroups is absolute name of cgroups in which to place all non-kernel processes that are not already in a container. Empty for no container. Rolling back the flag requires a reboot. The cgroupRoot must be specified if this field is not empty. Dynamic Kubelet Config (deprecated): This field should not be updated without a full node reboot. It is safest to keep this value the same as the local config. -Default: "" |
+Default: ""
+
cgroupRootstring
|
- cgroupRoot is the root cgroup to use for pods. This is handled by the
+ cgroupRoot is the root cgroup to use for pods. This is handled by the container runtime on a best effort basis. Dynamic Kubelet Config (deprecated): This field should not be updated without a full node reboot. It is safest to keep this value the same as the local config. -Default: "" |
+Default: ""
+
cgroupsPerQOSbool
|
- cgroupsPerQOS enable QoS based CGroup hierarchy: top level CGroups for QoS classes
+ cgroupsPerQOS enable QoS based CGroup hierarchy: top level CGroups for QoS classes and all Burstable and BestEffort Pods are brought up under their specific top level QoS CGroup. Dynamic Kubelet Config (deprecated): This field should not be updated without a full node reboot. It is safest to keep this value the same as the local config. -Default: true |
+Default: true
+
cgroupDriverstring
|
- cgroupDriver is the driver kubelet uses to manipulate CGroups on the host (cgroupfs
+ cgroupDriver is the driver kubelet uses to manipulate CGroups on the host (cgroupfs or systemd). Dynamic Kubelet Config (deprecated): This field should not be updated without a full node reboot. It is safest to keep this value the same as the local config. -Default: "cgroupfs" |
+Default: "cgroupfs"
+
cpuManagerPolicystring
|
- cpuManagerPolicy is the name of the policy to use.
+ cpuManagerPolicy is the name of the policy to use. Requires the CPUManager feature gate to be enabled. Dynamic Kubelet Config (deprecated): This field should not be updated without a full node reboot. It is safest to keep this value the same as the local config. -Default: "None" |
+Default: "None"
+
cpuManagerPolicyOptionsmap[string]string
|
- cpuManagerPolicyOptions is a set of key=value which allows to set extra options
+ cpuManagerPolicyOptions is a set of key=value which allows to set extra options to fine tune the behaviour of the cpu manager policies. -Requires both the "CPUManager" and "CPUManagerPolicyOptions" feature gates to be enabled. +Requires both the "CPUManager" and "CPUManagerPolicyOptions" feature gates to be enabled. Dynamic Kubelet Config (beta): This field should not be updated without a full node reboot. It is safest to keep this value the same as the local config. -Default: nil |
+Default: nil
+
cpuManagerReconcilePeriod- meta/v1.Duration
+meta/v1.Duration
|
- cpuManagerReconcilePeriod is the reconciliation period for the CPU Manager.
+ cpuManagerReconcilePeriod is the reconciliation period for the CPU Manager. Requires the CPUManager feature gate to be enabled. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that shortening the period may carry a performance impact. -Default: "10s" |
+Default: "10s"
+
memoryManagerPolicystring
|
- memoryManagerPolicy is the name of the policy to use by memory manager.
+ memoryManagerPolicy is the name of the policy to use by memory manager. Requires the MemoryManager feature gate to be enabled. Dynamic Kubelet Config (deprecated): This field should not be updated without a full node reboot. It is safest to keep this value the same as the local config. -Default: "none" |
+Default: "none"
+
topologyManagerPolicystring
|
- topologyManagerPolicy is the name of the topology manager policy to use.
-Valid values include:
-
-- `restricted`: kubelet only allows pods with optimal NUMA node alignment for
- requested resources;
-- `best-effort`: kubelet will favor pods with NUMA alignment of CPU and device
- resources;
-- `none`: kubelet has no knowledge of NUMA alignment of a pod's CPU and device resources.
-- `single-numa-node`: kubelet only allows pods with a single NUMA alignment
- of CPU and device resources.
-
-Policies other than "none" require the TopologyManager feature gate to be enabled.
+ topologyManagerPolicy is the name of the topology manager policy to use. +Valid values include: +
Policies other than "none" require the TopologyManager feature gate to be enabled. Dynamic Kubelet Config (deprecated): This field should not be updated without a full node reboot. It is safest to keep this value the same as the local config. -Default: "none" |
+Default: "none"
+
topologyManagerScopestring
|
- topologyManagerScope represents the scope of topology hint generation -that topology manager requests and hint providers generate. Valid values include: - -- `container`: topology policy is applied on a per-container basis. -- `pod`: topology policy is applied on a per-pod basis. - -"pod" scope requires the TopologyManager feature gate to be enabled. -Default: "container" | +
qosReservedmap[string]string
|
- qosReserved is a set of resource name to percentage pairs that specify
+ qosReserved is a set of resource name to percentage pairs that specify the minimum percentage of a resource reserved for exclusive use by the guaranteed QoS tier. -Currently supported resources: "memory" +Currently supported resources: "memory" Requires the QOSReserved feature gate to be enabled. Dynamic Kubelet Config (deprecated): This field should not be updated without a full node reboot. It is safest to keep this value the same as the local config. -Default: nil |
+Default: nil
+
runtimeRequestTimeout- meta/v1.Duration
+meta/v1.Duration
|
- runtimeRequestTimeout is the timeout for all runtime requests except long running
+ runtimeRequestTimeout is the timeout for all runtime requests except long running requests - pull, logs, exec and attach. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may disrupt components that interact with the Kubelet server. -Default: "2m" |
+Default: "2m"
+
hairpinModestring
|
- hairpinMode specifies how the Kubelet should configure the container
+ hairpinMode specifies how the Kubelet should configure the container bridge for hairpin packets. Setting this flag allows endpoints in a Service to loadbalance back to -themselves if they should try to access their own Service. Values: - -- "promiscuous-bridge": make the container bridge promiscuous. -- "hairpin-veth": set the hairpin flag on container veth interfaces. -- "none": do nothing. - -Generally, one must set `--hairpin-mode=hairpin-veth to` achieve hairpin NAT, +themselves if they should try to access their own Service. Values: +
Generally, one must set |
+Default: "promiscuous-bridge"
+
maxPodsint32
|
- maxPods is the maximum number of Pods that can run on this Kubelet.
+ maxPods is the maximum number of Pods that can run on this Kubelet. The value must be a non-negative integer. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that @@ -938,233 +723,216 @@ changes may cause Pods to fail admission on Kubelet restart, and may change the value reported in Node.Status.Capacity[v1.ResourcePods], thus affecting future scheduling decisions. Increasing this value may also decrease performance, as more Pods can be packed into a single node. -Default: 110 |
+Default: 110
+
podCIDRstring
|
- podCIDR is the CIDR to use for pod IP addresses, only used in standalone mode.
+ podCIDR is the CIDR to use for pod IP addresses, only used in standalone mode. In cluster mode, this is obtained from the control plane. Dynamic Kubelet Config (deprecated): This field should always be set to the empty default. It should only set for standalone Kubelets, which cannot use Dynamic Kubelet Config. -Default: "" |
+Default: ""
+
podPidsLimitint64
|
- podPidsLimit is the maximum number of PIDs in any pod.
+ podPidsLimit is the maximum number of PIDs in any pod. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that lowering it may prevent container processes from forking after the change. -Default: -1 |
+Default: -1
+
resolvConfstring
|
- resolvConf is the resolver configuration file used as the basis
+ resolvConf is the resolver configuration file used as the basis for the container DNS resolution configuration. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that changes will only take effect on Pods created after the update. Draining the node is recommended before changing this field. If set to the empty string, will override the default and effectively disable DNS lookups. -Default: "/etc/resolv.conf" |
+Default: "/etc/resolv.conf"
+
runOncebool
|
- runOnce causes the Kubelet to check the API server once for pods,
+ runOnce causes the Kubelet to check the API server once for pods, run those in addition to the pods specified by static pod files, and exit. -Default: false |
+Default: false
+
cpuCFSQuotabool
|
- cpuCFSQuota enables CPU CFS quota enforcement for containers that
+ cpuCFSQuota enables CPU CFS quota enforcement for containers that specify CPU limits. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that disabling it may reduce node stability. -Default: true |
+Default: true
+
cpuCFSQuotaPeriod- meta/v1.Duration
+meta/v1.Duration
|
- cpuCFSQuotaPeriod is the CPU CFS quota period value, `cpu.cfs_period_us`.
+ cpuCFSQuotaPeriod is the CPU CFS quota period value, |
+Default: "100ms"
+
nodeStatusMaxImagesint32
|
- nodeStatusMaxImages caps the number of images reported in Node.status.images.
+ nodeStatusMaxImages caps the number of images reported in Node.status.images. The value must be greater than -2. Note: If -1 is specified, no cap will be applied. If 0 is specified, no image is returned. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that different values can be reported on node status. -Default: 50 |
+Default: 50
+
maxOpenFilesint64
|
- maxOpenFiles is Number of files that can be opened by Kubelet process.
+ maxOpenFiles is Number of files that can be opened by Kubelet process. The value must be a non-negative number. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact the ability of the Kubelet to interact with the node's filesystem. -Default: 1000000 |
+Default: 1000000
+
contentTypestring
|
- contentType is contentType of requests sent to apiserver.
+ contentType is contentType of requests sent to apiserver. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact the ability for the Kubelet to communicate with the API server. If the Kubelet loses contact with the API server due to a change to this field, the change cannot be reverted via dynamic Kubelet config. -Default: "application/vnd.kubernetes.protobuf" |
+Default: "application/vnd.kubernetes.protobuf"
+
kubeAPIQPSint32
|
- kubeAPIQPS is the QPS to use while talking with kubernetes apiserver.
+ kubeAPIQPS is the QPS to use while talking with kubernetes apiserver. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact scalability by changing the amount of traffic the Kubelet sends to the API server. -Default: 5 |
+Default: 5
+
kubeAPIBurstint32
|
- kubeAPIBurst is the burst to allow while talking with kubernetes API server.
+ kubeAPIBurst is the burst to allow while talking with kubernetes API server. This field cannot be a negative number. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact scalability by changing the amount of traffic the Kubelet sends to the API server. -Default: 10 |
+Default: 10
+
serializeImagePullsbool
|
- serializeImagePulls when enabled, tells the Kubelet to pull images one
-at a time. We recommend ∗not∗ changing the default value on nodes that
-run docker daemon with version < 1.9 or an Aufs storage backend.
+ serializeImagePulls when enabled, tells the Kubelet to pull images one +at a time. We recommend not changing the default value on nodes that +run docker daemon with version < 1.9 or an Aufs storage backend. Issue #10959 has more details. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact the performance of image pulls. -Default: true |
+Default: true
+
evictionHardmap[string]string
|
- evictionHard is a map of signal names to quantities that defines hard eviction
-thresholds. For example: `{"memory.available": "300Mi"}`.
+ evictionHard is a map of signal names to quantities that defines hard eviction
+thresholds. For example: |
+memory.available: "100Mi"
+nodefs.available: "10%"
+nodefs.inodesFree: "5%"
+imagefs.available: "15%"
+
evictionSoftmap[string]string
|
- evictionSoft is a map of signal names to quantities that defines soft eviction thresholds.
-For example: `{"memory.available": "300Mi"}`.
+ evictionSoft is a map of signal names to quantities that defines soft eviction thresholds.
+For example: |
+Default: nil
+
evictionSoftGracePeriodmap[string]string
|
- evictionSoftGracePeriod is a map of signal names to quantities that defines grace
-periods for each soft eviction signal. For example: `{"memory.available": "30s"}`.
+ evictionSoftGracePeriod is a map of signal names to quantities that defines grace
+periods for each soft eviction signal. For example: |
+Default: nil
+
evictionPressureTransitionPeriod- meta/v1.Duration
+meta/v1.Duration
|
- evictionPressureTransitionPeriod is the duration for which the kubelet has to wait
+ evictionPressureTransitionPeriod is the duration for which the kubelet has to wait before transitioning out of an eviction pressure condition. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that lowering it may decrease the stability of the node when the node is overcommitted. -Default: "5m" |
+Default: "5m"
+
evictionMaxPodGracePeriodint32
|
- evictionMaxPodGracePeriod is the maximum allowed grace period (in seconds) to use
+ evictionMaxPodGracePeriod is the maximum allowed grace period (in seconds) to use when terminating pods in response to a soft eviction threshold being met. This value effectively caps the Pod's terminationGracePeriodSeconds value during soft evictions. Note: Due to issue #64530, the behavior has a bug where this value currently just @@ -1174,47 +942,44 @@ If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that lowering it decreases the amount of time Pods will have to gracefully clean up before being killed during a soft eviction. -Default: 0 |
+Default: 0
+
evictionMinimumReclaimmap[string]string
|
- evictionMinimumReclaim is a map of signal names to quantities that defines minimum reclaims,
+ evictionMinimumReclaim is a map of signal names to quantities that defines minimum reclaims,
which describe the minimum amount of a given resource the kubelet will reclaim when
performing a pod eviction while that resource is under pressure.
-For example: `{"imagefs.available": "2Gi"}`.
+For example: |
+Default: nil
+
podsPerCoreint32
|
- podsPerCore is the maximum number of pods per core. Cannot exceed maxPods.
+ podsPerCore is the maximum number of pods per core. Cannot exceed maxPods.
The value must be a non-negative integer.
If 0, there is no limit on the number of Pods.
If DynamicKubeletConfig (deprecated; default off) is on, when
dynamically updating this field, consider that
changes may cause Pods to fail admission on Kubelet restart, and may change
-the value reported in `Node.status.capacity.pods`, thus affecting
+the value reported in |
+Default: 0
+
enableControllerAttachDetachbool
|
- enableControllerAttachDetach enables the Attach/Detach controller to
+ enableControllerAttachDetach enables the Attach/Detach controller to manage attachment/detachment of volumes scheduled to this node, and disables kubelet from executing any attach/detach operations. If DynamicKubeletConfig (deprecated; default off) is on, when @@ -1224,45 +989,42 @@ may result in volumes refusing to detach if the node is not drained prior to the update, and if Pods are scheduled to the node before the volumes.kubernetes.io/controller-managed-attach-detach annotation is updated by the Kubelet. In general, it is safest to leave this value set the same as local config. -Default: true |
+Default: true
+
protectKernelDefaultsbool
|
- protectKernelDefaults, if true, causes the Kubelet to error if kernel
+ protectKernelDefaults, if true, causes the Kubelet to error if kernel flags are not as it expects. Otherwise the Kubelet will attempt to modify kernel flags to match its expectation. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that enabling it may cause the Kubelet to crash-loop if the Kernel is not configured as Kubelet expects. -Default: false |
+Default: false
+
makeIPTablesUtilChainsbool
|
- makeIPTablesUtilChains, if true, causes the Kubelet ensures a set of iptables rules
+ makeIPTablesUtilChains, if true, causes the Kubelet ensures a set of iptables rules are present on host. These rules will serve as utility rules for various components, e.g. kube-proxy. The rules will be created based on iptablesMasqueradeBit and iptablesDropBit. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that disabling it will prevent the Kubelet from healing locally misconfigured iptables rules. -Default: true |
+Default: true
+
iptablesMasqueradeBitint32
|
- iptablesMasqueradeBit is the bit of the iptables fwmark space to mark for SNAT.
+ iptablesMasqueradeBit is the bit of the iptables fwmark space to mark for SNAT. Values must be within the range [0, 31]. Must be different from other mark bits. Warning: Please match the value of the corresponding parameter in kube-proxy. TODO: clean up IPTablesMasqueradeBit in kube-proxy. @@ -1270,107 +1032,99 @@ If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it needs to be coordinated with other components, like kube-proxy, and the update will only be effective if MakeIPTablesUtilChains is enabled. -Default: 14 |
+Default: 14
+
iptablesDropBitint32
|
- iptablesDropBit is the bit of the iptables fwmark space to mark for dropping packets.
+ iptablesDropBit is the bit of the iptables fwmark space to mark for dropping packets. Values must be within the range [0, 31]. Must be different from other mark bits. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it needs to be coordinated with other components, like kube-proxy, and the update will only be effective if MakeIPTablesUtilChains is enabled. -Default: 15 |
+Default: 15
+
featureGatesmap[string]bool
|
- featureGates is a map of feature names to bools that enable or disable experimental
+ featureGates is a map of feature names to bools that enable or disable experimental features. This field modifies piecemeal the built-in default values from -"k8s.io/kubernetes/pkg/features/kube_features.go". +"k8s.io/kubernetes/pkg/features/kube_features.go". If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider the documentation for the features you are enabling or disabling. While we encourage feature developers to make it possible to dynamically enable and disable features, some changes may require node reboots, and some features may require careful coordination to retroactively disable. -Default: nil |
+Default: nil
+
failSwapOnbool
|
- failSwapOn tells the Kubelet to fail to start if swap is enabled on the node.
+ failSwapOn tells the Kubelet to fail to start if swap is enabled on the node. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that setting it to true will cause the Kubelet to crash-loop if swap is enabled. -Default: true |
+Default: true
+
memorySwapMemorySwapConfiguration
|
- memorySwap configures swap memory available to container workloads. | +
containerLogMaxSizestring
|
- containerLogMaxSize is a quantity defining the maximum size of the container log
-file before it is rotated. For example: "5Mi" or "256Ki".
+ containerLogMaxSize is a quantity defining the maximum size of the container log +file before it is rotated. For example: "5Mi" or "256Ki". If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may trigger log rotation. -Default: "10Mi" |
+Default: "10Mi"
+
containerLogMaxFilesint32
|
- containerLogMaxFiles specifies the maximum number of container log files that can
+ containerLogMaxFiles specifies the maximum number of container log files that can be present for a container. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that lowering it may cause log files to be deleted. -Default: 5 |
+Default: 5
+
configMapAndSecretChangeDetectionStrategyResourceChangeDetectionStrategy
|
- configMapAndSecretChangeDetectionStrategy is a mode in which ConfigMap and Secret -managers are running. Valid values include: - -- `Get`: kubelet fetches necessary objects directly from the API server; -- `Cache`: kubelet uses TTL cache for object fetched from the API server; -- `Watch`: kubelet uses watches to observe changes to objects that are in its interest. - -Default: "Watch" | +
systemReservedmap[string]string
|
- systemReserved is a set of ResourceName=ResourceQuantity (e.g. cpu=200m,memory=150G)
+ systemReserved is a set of ResourceName=ResourceQuantity (e.g. cpu=200m,memory=150G) pairs that describe resources reserved for non-kubernetes components. Currently only cpu and memory are supported. See http://kubernetes.io/docs/user-guide/compute-resources for more detail. @@ -1379,15 +1133,14 @@ dynamically updating this field, consider that it may not be possible to increase the reserved resources, because this requires resizing cgroups. Always look for a NodeAllocatableEnforced event after updating this field to ensure that the update was successful. -Default: nil |
+Default: nil
+
kubeReservedmap[string]string
|
- kubeReserved is a set of ResourceName=ResourceQuantity (e.g. cpu=200m,memory=150G) pairs
+ kubeReserved is a set of ResourceName=ResourceQuantity (e.g. cpu=200m,memory=150G) pairs that describe resources reserved for kubernetes system components. Currently cpu, memory and local storage for root file system are supported. See https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/ @@ -1397,76 +1150,71 @@ dynamically updating this field, consider that it may not be possible to increase the reserved resources, because this requires resizing cgroups. Always look for a NodeAllocatableEnforced event after updating this field to ensure that the update was successful. -Default: nil |
+Default: nil
+
reservedSystemCPUs [Required]string
|
- The reservedSystemCPUs option specifies the CPU list reserved for the host -level system threads and kubernetes related threads. This provide a "static" -CPU list rather than the "dynamic" list by systemReserved and kubeReserved. -This option does not support systemReservedCgroup or kubeReservedCgroup. | +
showHiddenMetricsForVersionstring
|
- showHiddenMetricsForVersion is the previous version for which you want to show
+ showHiddenMetricsForVersion is the previous version for which you want to show
hidden metrics.
Only the previous minor version is meaningful, other values will not be allowed.
-The format is ` |
+Default: ""
+
systemReservedCgroupstring
|
- systemReservedCgroup helps the kubelet identify absolute name of top level CGroup used
-to enforce `systemReserved` compute resource reservation for OS system daemons.
-Refer to [Node Allocatable](https://git.k8s.io/community/contributors/design-proposals/node/node-allocatable.md)
+ systemReservedCgroup helps the kubelet identify absolute name of top level CGroup used
+to enforce |
+Default: ""
+
kubeReservedCgroupstring
|
- kubeReservedCgroup helps the kubelet identify absolute name of top level CGroup used
-to enforce `KubeReserved` compute resource reservation for Kubernetes node system daemons.
-Refer to [Node Allocatable](https://git.k8s.io/community/contributors/design-proposals/node/node-allocatable.md)
+ kubeReservedCgroup helps the kubelet identify absolute name of top level CGroup used
+to enforce |
+Default: ""
+
enforceNodeAllocatable[]string
|
- This flag specifies the various Node Allocatable enforcements that Kubelet needs to perform.
-This flag accepts a list of options. Acceptable options are `none`, `pods`,
-`system-reserved` and `kube-reserved`.
-If `none` is specified, no other options may be specified.
-When `system-reserved` is in the list, systemReservedCgroup must be specified.
-When `kube-reserved` is in the list, kubeReservedCgroup must be specified.
-This field is supported only when `cgroupsPerQOS` is set to true.
-Refer to [Node Allocatable](https://git.k8s.io/community/contributors/design-proposals/node/node-allocatable.md)
+ This flag specifies the various Node Allocatable enforcements that Kubelet needs to perform.
+This flag accepts a list of options. Acceptable options are |
+Default: ["pods"]
+
allowedUnsafeSysctls[]string
|
- A comma separated whitelist of unsafe sysctls or sysctl patterns (ending in `∗`). -Unsafe sysctl groups are `kernel.shm∗`, `kernel.msg∗`, `kernel.sem`, `fs.mqueue.∗`, -and `net.∗`. For example: "`kernel.msg∗,net.ipv4.route.min_pmtu`" -Default: [] | +
volumePluginDirstring
|
- volumePluginDir is the full path of the directory in which to search
+ volumePluginDir is the full path of the directory in which to search for additional third party volume plugins. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that changing the volumePluginDir may disrupt workloads relying on third party volume plugins. -Default: "/usr/libexec/kubernetes/kubelet-plugins/volume/exec/" |
+Default: "/usr/libexec/kubernetes/kubelet-plugins/volume/exec/"
+
providerIDstring
|
- providerID, if set, sets the unique ID of the instance that an external
+ providerID, if set, sets the unique ID of the instance that an external provider (i.e. cloudprovider) can use to identify a specific node. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact the ability of the Kubelet to interact with cloud providers. -Default: "" |
+Default: ""
+
kernelMemcgNotificationbool
|
- kernelMemcgNotification, if set, instructs the the kubelet to integrate with the
+ kernelMemcgNotification, if set, instructs the the kubelet to integrate with the kernel memcg notification for determining if memory eviction thresholds are exceeded rather than polling. If DynamicKubeletConfig (deprecated; default off) is on, when dynamically updating this field, consider that it may impact the way Kubelet interacts with the kernel. -Default: false |
+Default: false
+
logging [Required]LoggingConfiguration
|
- logging specifies the options of logging.
-Refer to [Logs Options](https://github.com/kubernetes/component-base/blob/master/logs/options.go)
+ logging specifies the options of logging. +Refer to Logs Options for more information. Default: - Format: text |
+Format: text
+
enableSystemLogHandlerbool
|
- enableSystemLogHandler enables system logs via web interface host:port/logs/ -Default: true | +
shutdownGracePeriod- meta/v1.Duration
+meta/v1.Duration
|
- shutdownGracePeriod specifies the total duration that the node should delay the
+ shutdownGracePeriod specifies the total duration that the node should delay the shutdown and total grace period for pod termination during a node shutdown. -Default: "0s" |
+Default: "0s"
+
shutdownGracePeriodCriticalPods- meta/v1.Duration
+meta/v1.Duration
|
- shutdownGracePeriodCriticalPods specifies the duration used to terminate critical
+ shutdownGracePeriodCriticalPods specifies the duration used to terminate critical pods during a node shutdown. This should be less than shutdownGracePeriod. For example, if shutdownGracePeriod=30s, and shutdownGracePeriodCriticalPods=10s, during a node shutdown the first 20 seconds would be reserved for gracefully terminating normal pods, and the last 10 seconds would be reserved for terminating critical pods. -Default: "0s" |
+Default: "0s"
+
shutdownGracePeriodByPodPriority[]ShutdownGracePeriodByPodPriority
|
- shutdownGracePeriodByPodPriority specifies the shutdown grace period for Pods based
+ shutdownGracePeriodByPodPriority specifies the shutdown grace period for Pods based on their associated priority class value. When a shutdown request is received, the Kubelet will initiate shutdown on all pods running on the node with a grace period that depends on the priority of the pod, @@ -1587,32 +1326,31 @@ and then wait for all pods to exit. Each entry in the array represents the graceful shutdown time a pod with a priority class value that lies in the range of that value and the next higher entry in the list when the node is shutting down. -For example, to allow critical pods 10s to shutdown, priority>=10000 pods 20s to -shutdown, and all remaining pods 30s to shutdown. - -shutdownGracePeriodByPodPriority: - - priority: 2000000000 - shutdownGracePeriodSeconds: 10 - - priority: 10000 - shutdownGracePeriodSeconds: 20 - - priority: 0 - shutdownGracePeriodSeconds: 30 - -The time the Kubelet will wait before exiting will at most be the maximum of all +For example, to allow critical pods 10s to shutdown, priority>=10000 pods 20s to +shutdown, and all remaining pods 30s to shutdown. +shutdownGracePeriodByPodPriority: +
The time the Kubelet will wait before exiting will at most be the maximum of all shutdownGracePeriodSeconds for each priority class range represented on the node. When all pods have exited or reached their grace periods, the Kubelet will release the shutdown inhibit lock. Requires the GracefulNodeShutdown feature gate to be enabled. This configuration must be empty if either ShutdownGracePeriod or ShutdownGracePeriodCriticalPods is set. -Default: nil |
+Default: nil
+
reservedMemory[]MemoryReservation
|
- reservedMemory specifies a comma-separated list of memory reservations for NUMA nodes.
+ reservedMemory specifies a comma-separated list of memory reservations for NUMA nodes.
The parameter makes sense only in the context of the memory manager feature.
The memory manager will not allocate reserved memory for container workloads.
For example, if you have a NUMA0 with 10Gi of memory and the reservedMemory was
@@ -1621,81 +1359,74 @@ only 9Gi is available for allocation.
You can specify a different amount of NUMA node and memory types.
You can omit this parameter at all, but you should be aware that the amount of
reserved memory from all NUMA nodes should be equal to the amount of memory specified
-by the [node allocatable](https://kubernetes.io/docs/tasks/administer-cluster/reserve-compute-resources/#node-allocatable).
+by the node allocatable.
If at least one node allocatable parameter has a non-zero value, you will need
to specify at least one NUMA node.
-Also, avoid specifying:
-
-1. Duplicates, the same NUMA node, and memory type, but with a different value.
-2. zero limits for any memory type.
-3. NUMAs nodes IDs that do not exist under the machine.
-4. memory types except for memory and hugepages- |
+Also, avoid specifying:
+
enableProfilingHandlerbool
|
- enableProfilingHandler enables profiling via web interface host:port/debug/pprof/ -Default: true | +
enableDebugFlagsHandlerbool
|
- enableDebugFlagsHandler enables flags endpoint via web interface host:port/debug/flags/v -Default: true | +
seccompDefaultbool
|
- SeccompDefault enables the use of `RuntimeDefault` as the default seccomp profile for all workloads.
+ SeccompDefault enables the use of |
+Default: false
+
memoryThrottlingFactorfloat64
|
- MemoryThrottlingFactor specifies the factor multiplied by the memory limit or node allocatable memory
+ MemoryThrottlingFactor specifies the factor multiplied by the memory limit or node allocatable memory when setting the cgroupv2 memory.high value to enforce MemoryQoS. Decreasing this factor will set lower high limit for container cgroups and put heavier reclaim pressure while increasing will put less reclaim pressure. See http://kep.k8s.io/2570 for more details. -Default: 0.8 |
+Default: 0.8
+
registerWithTaints[]core/v1.Taint
|
- registerWithTaints are an array of taints to add to a node object when
+ registerWithTaints are an array of taints to add to a node object when the kubelet registers itself. This only takes effect when registerNode is true and upon the initial registration of the node. -Default: nil |
+Default: nil
+
registerNodebool
|
- registerNode enables automatic registration with the apiserver. -Default: true | +
SerializedNodeConfigSource allows us to serialize v1.NodeConfigSource. This type is used internally by the Kubelet for tracking checkpointed dynamic configs. -It exists in the kubeletconfig API group because it is classified as a versioned input to the Kubelet. +It exists in the kubeletconfig API group because it is classified as a versioned input to the Kubelet.
+| Field | Description |
|---|---|
apiVersionstring | kubelet.config.k8s.io/v1beta1 |
kindstring | SerializedNodeConfigSource |
sourcecore/v1.NodeConfigSource
|
- source is the source that we are serializing. | +
enabledbool
enabled allows anonymous requests to the kubelet server. Requests that are not rejected by another authentication method are treated as anonymous requests. -Anonymous requests have a username of `system:anonymous`, and a group name of -`system:unauthenticated`.
system:anonymous, and a group name of
+system:unauthenticated.
+
x509KubeletX509Authentication
x509 contains settings related to x509 client certificate authentication.
+webhookKubeletWebhookAuthentication
webhook contains settings related to webhook bearer token authentication.
+anonymousKubeletAnonymousAuthentication
anonymous contains settings related to anonymous authentication.
+modeKubeletAuthorizationMode
mode is the authorization mode to apply to requests to the kubelet server.
+Valid values are AlwaysAllow and Webhook.
+Webhook mode uses the SubjectAccessReview API to determine authorization.
webhookKubeletWebhookAuthorization
webhook contains settings related to Webhook authorization.
+enabledbool
enabled allows bearer token authentication backed by the +tokenreviews.authentication.k8s.io API.
+cacheTTLmeta/v1.Duration
+meta/v1.Duration
cacheTTL enables caching of authentication results
+cacheAuthorizedTTLmeta/v1.Duration
+meta/v1.Duration
cacheAuthorizedTTL is the duration to cache 'authorized' responses from the +webhook authorizer.
+cacheUnauthorizedTTLmeta/v1.Duration
+meta/v1.Duration
cacheUnauthorizedTTL is the duration to cache 'unauthorized' responses from +the webhook authorizer.
+clientCAFilestring
clientCAFile is the path to a PEM-encoded certificate bundle. If set, any request presenting a client certificate signed by one of the authorities in the bundle is authenticated with a username corresponding to the CommonName, -and groups corresponding to the Organization in the client certificate.
MemoryReservation specifies the memory reservation of different types for each NUMA node
+| Field | Description |
|---|---|
numaNode [Required]int32
|
- No description provided. - | + No description provided.
limits [Required]core/v1.ResourceList
|
- No description provided. - | + No description provided.
swapBehaviorstring
swapBehavior configures swap memory available to container workloads. May be one of +"", "LimitedSwap": workload combined memory and swap usage cannot exceed pod memory limit +"UnlimitedSwap": workloads can use unlimited swap, up to the allocatable limit.
+ResourceChangeDetectionStrategy denotes a mode in which internal +managers (secret, configmap) are discovering object changes.
+ ## `ShutdownGracePeriodByPodPriority` {#kubelet-config-k8s-io-v1beta1-ShutdownGracePeriodByPodPriority} - - **Appears in:** + - [KubeletConfiguration](#kubelet-config-k8s-io-v1beta1-KubeletConfiguration) -ShutdownGracePeriodByPodPriority specifies the shutdown grace period for Pods based on their associated priority class value +ShutdownGracePeriodByPodPriority specifies the shutdown grace period for Pods based on their associated priority class value
+| Field | Description |
|---|---|
priority [Required]int32
|
- priority is the priority value associated with the shutdown grace period | +
shutdownGracePeriodSeconds [Required]int64
|
- shutdownGracePeriodSeconds is the shutdown grace period in seconds | +
FormatOptions contains options for the different logging formats.
+ + +| Field | Description |
|---|---|
json [Required]+ JSONOptions
+ |
+
+ [Experimental] JSON contains options for logging format "json". + |
+
JSONOptions contains options for logging format "json".
+ + +| Field | Description |
|---|---|
splitStream [Required]+ bool
+ |
+
+ [Experimental] SplitStream redirects error messages to stderr while +info messages go to stdout, with buffering. The default is to write +both to stdout, without buffering. + |
+
infoBufferSize [Required]+ k8s.io/apimachinery/pkg/api/resource.QuantityValue
+ |
+
+ [Experimental] InfoBufferSize sets the size of the info stream when +using split streams. The default is zero, which disables buffering. + |
+
LoggingConfiguration contains logging options +Refer Logs Options for more information.
+ + +| Field | Description |
|---|---|
format [Required]+ string
+ |
+
+ Format Flag specifies the structure of log messages.
+default value of format is |
+
flushFrequency [Required]+ time.Duration
+ |
+
+ Maximum number of seconds between log flushes. Ignored if the +selected logging backend writes log messages without buffering. + |
+
verbosity [Required]+ uint32
+ |
+
+ Verbosity is the threshold that determines which log messages are +logged. Default is zero which logs only the most important +messages. Higher values enable additional messages. Error messages +are always logged. + |
+
vmodule [Required]+ VModuleConfiguration
+ |
+
+ VModule overrides the verbosity threshold for individual files. +Only supported for "text" log format. + |
+
sanitization [Required]+ bool
+ |
+
+ [Experimental] When enabled prevents logging of fields tagged as sensitive (passwords, keys, tokens). +Runtime log sanitization may introduce significant computation overhead and therefore should not be enabled in production.`) + |
+
options [Required]+ FormatOptions
+ |
+
+ [Experimental] Options holds additional parameters that are specific +to the different logging formats. Only the options for the selected +format get used, but all of them get validated. + |
+
VModuleConfiguration is a collection of individual file names or patterns +and the corresponding verbosity threshold.
+ + +