Release 1.9 (#5978)

* Trivial change to open release branch

* Undo trivial change

* add service ipvs overview

* Add instructions on how to setup kubectl

* Document conntrack dependency for kube-proxy

* Add an a

This is kind of jarring / missing an article. I'm guessing it should either be ' to a rack of bare metal servers.' or '...to racks of bare metal servers.'.

* adding example responses for common issues

 - support request
 - code bug report

* Trivial change to open release branch

* Undo trivial change

* Signed-off-by: Ziqi Zhao <zhaoziqi@qiniu.com> (#5366)

Fix the not-working test case yaml for /doc/concepts/storage/volumes.md

* kubectl-overview

* temp fix for broken pod and deployment links

* Update Table of Solutions for Juju

* Revise certificates documentation (#5965)

* Update review-issues.md

Some edits for clarity and condensed language.

* Update init-containers.md

Fix leading spaces in commands.

* Update kubectl-overview.md

Fix format.

* Update clc.md

Fix format.

* Update openstack-heat.md

The url no need. just  highlight.

* Typo

I believe this should be "users" not "uses"

* making explicit hostname uniq requirement

* Update scheduling-hugepages.md

* Update update-daemon-set.md

* fix redirection of PersistentVolume

* Update hpa.md

* update kubectl instruction

* Use the format of kubeadm init

* fix spelling error

guarnatees  to guarantees

* add matchLabels description (#6020)

* search and replace for k8s.github.io to website (#6019)

* fix scale command of object-management (#6011)

* Update replicaset.md (#6009)

* Update secret.md (#6008)

* specify password for mysql image (#5990)

* specify password for mysql image

* specify password for mysql image

* link error for run-stateless-application-deployment.md (#5985)

* link error for run-stateless-application-deployment.md

* link error for run-stateless-application-deployment.md

* Add performance implications of inter-pod affinity/anti-affinity (#5979)

* 404 monthly maintenance - October 2017 (#5977)

* Updated redirects

* More redirects

* Add conjure-up to Turnkey Cloud Solutions list (#5973)

* Add conjure-up to Turnkey Cloud Solutions list

* Changed wording slightly

* change the StatefulSet to ReplicaSet in reference (#5968)

* Clarification of failureThreshold of probes (#5963)

* Mention usage of block storage version param (#5925)

Mention usage of block storage version (bs-version) parameter to
workaround attachment issues using older K8S versions on an OpenStack
cloud with path-based endpoints.

Resolves: https://github.com/kubernetes/kubernetes.github.io/issues/5924

* Update sysctl-cluster.md (#5894)

Include guide on enabling unsafe sysctls in minikube

* Avoid Latin phrases & format note (#5889)

* Avoid Latin phrases & format note

according the Documentation Style Guide

* Update scratch.md

* Update scratch.md

* resolves jekyll rendering error (#5976)

- chinese isn't understood for keys in YAML frontmatter in jekyll, so
   replaced it with the english equivalent that doesn't throw the
following error on rendering:

Error reading file src/kubernetes.github.io/cn/docs/concepts/cluster-administration/device-plugins.md: (<unknown>): could not find expected ':' while scanning a simple key at line 4 column 1

* Change VM to pod. (#6022)

* Add link to custom metrics. (#6023)

* Rephrase core group. (#6024)

* Added explanation on context to when joining (#6018)

* Update create-cluster-kubeadm.md (#5761)

Update Canal version in pod network apply commands

* Fixes issue #5620 (#5869)

* Fixes issue #5620

Signed-off-by: Brad Topol <btopol@us.ibm.com>

* Restructured so that review process is for both current and upcoming
releases.  Added content describing the use of tech reviewers.

* Removed incorrect Kubernetes reviewer link.

* Fixed tech reviewer URL to now use website

* Update pod-priority-preemption.md

fix-wrong-link-to-pod-preemption

* pod-security-policy.md: add links to the page about admission plugins.

* Adding all files for BlaBlaCar case study (#5857)

* Adding all files for BlaBlaCar case study

* Update blablacar.html

* Fix changed URL for google containers

* Add /docs/reference/auto-generated directory

* correct the downwardapi redirect

* Remove links using "here"

* Rename to /docs/reference/generated directory

* add Concept template

* Change title to just Ingress

* Link mistake (#6038)

* link mistake

* link mistake

* skip title check for skip_title_check.txt

* skip title check for skip_title_check.txt

* remove doesn't exist link.

* Fix podpreset task (#5705)

* Add a simple pod manifest to pod overview (#5986)

* Split PodPreset concept out from task doc (#5984)

* Add selector spec description (#5789)

* Add selector spec description

* Fix selector field explanation

* Put orphaned topics in TOC. (#6051)

* static-pod example bad format in the final page (#6050)

* static-pod example bad format in the final page

* static-pod example bad format in the final page

* static-pod example bad format in the final page

* static-pod example bad format in the final page

* static-pod example bad format in the final page

* Fix `backoffLimit` field misplacement (#6042)

It should be placed in JobSpec according to:
https://github.com/kubernetes/kubernetes/blob/master/api/swagger-spec/batch_v1.json#L1488-L1514

* Update addons.md (#6061)

* add info about VMware NSX-T CNI plugin (#5987)

* add info about VMware NSX-T CNI plugin

Hello,

I'm VMware Networking and Security Architect and would like to include short information about our CNI plugin implementation similar to what other vendors did

Best regards

Emil Gagala

* Update networking.md

* Update networking.md

* Update networking.md

* Update: Using universal zsh configuration (#5669)

* Update install-kubectl.md

Zsh is not only oh-my-zsh, so I added universal configuration for zsh that also can be used in prezto.

* fix merge error after rebase

* Operating etcd cluster for Kubernetes bad format in the final page (#6056)

* Operating etcd cluster for Kubernetes bad format in the final page

* Update configure-upgrade-etcd.md

* Update configure-upgrade-etcd.md

* Usage note and warning tags. (#6053)

* Usage note and warning tags.

* Update configure-upgrade-etcd.md

* Update configure-upgrade-etcd.md

* Document jekyll includes snippets

* Add jekyll includes to docs home toc

- Remove extra kubernetes home in toc

* document docker cgroupdriver req (#5937)

* Update test blacklists (#6063)

* Update toc check blacklist

* Update title check blacklist

* wip

* wip

* Fix typo

* Document unconfined apparmor profile

* Revert "Document the unconfined profile for AppArmor" (#6268)

* CRD Validation: remove alpha warning, change enable instructions to (#6066)

disable

* Documented service annotation for AWS ELB SSL policy

* kubeadm: add a note about the new `--print-join-command` flag.

This is a new flag for the `kubeadm token create` command.

* Add a note to PDB page

* Improve Kubeadm reference doc (#6103)

* automatically-generated kubeadm reference doc

* user-mantained kubeadm reference doc

* Documentation for CSIPersistentVolume

* change replicaset documentation to use apps/v1 APIs

* Update service.md

ipvs alpha version -> beta version

* Updated Deployment concept docs (#6494)

* Updated Deployment concept docs

* Addressed comments

* Documentation for volume scheduling alpha feature

* Update admission control docs for webhooks

* Improve DNS documentation (#6479)

* update ds for 1.9

* Update service.md

* Update service.md

* Revert "begin updating webhook documentation" (#6575)

* Update version numbers to include 1.9 (#6518)

* Update site versions for 1.9

* Removed 1.4 docs

* Update _config.yml

* Update _config.yml

* updates for raw block devices

* rbac: docs for aggregated cluster roles (#6474)

* Added IPv6 information for Kubelet arguments (#6498)

* Added IPv6 info to kube-proxy arguments

* Added IPv6 information for argument for kubelet

* Update PVC resizing documentation (#6487)

* Updates for Windows Server version 1709 with K8s v1.8 (#6180)

* Updated for WSv1709 and K8s v1.8

* Updated picture and CNI config

* Fixed formatting on CNI Config

* Updated docs to reference Microsoft/SDN GitHub docs

* fix typo

* Workaround for Jekyllr frontmatter

* Added section on features and limitations, with example yaml files.

* Update index.md

* Added kubeadm section, few other small fixes

* Few minor grammar fixes

* Update access-cluster.md with a comment that for IPv6
the user should use [::1] for the localhost

* Addressed a number of issues brought up against the base PR

* Fixed windows-host-setup link

* Rewrite PodSecurityPolicy guide

* Update index.md

Signed-off-by: Alin Balutoiu <abalutoiu@cloudbasesolutions.com>
Signed-off-by: Alin Gabriel Serdean <aserdean@ovn.org>

* Spelling correction and sentence capitalization.

- Corrected the spelling error for storing, was put in as 'stoing'.
- Capitalized list items.
- Added '.' at end of sentences in the list items.

* Update index.md

* Update index.md

* Addressed comments and rebased

* Fixed formatting

* Fixed formatting

* Updated header link

* Updated hyperlinks

* Updated warning

* formatting

* formatting

* formatting

* Revert "Update access-cluster.md with a comment that for IPv6"

This reverts commit 31e4dbdc25.

* Revert "fix typo"

This reverts commit c05678752d.

* Revert "Workaround for Jekyllr frontmatter"

This reverts commit b84ac59624.

* Fixed grammatical issues and reverted non-related commits

* Revert "Rewrite PodSecurityPolicy guide"

This reverts commit 5d39cfeae4.

* Revert "Spelling correction and sentence capitalization."

This reverts commit 47eed4346e.

* Fixed auto-numbering

* Minor formatting updates

* CoreDNS feature documentation (#6463)

* Initial placeholder PR for CoreDNS feature documentation

* Remove from admin, add content

* Fix missing endcapture

* Add to tasks.yml

* Review feedback

* Postpone Deletion of a Persistent Volume Claim in case It Is Used by a Pod (#6415)

* Postpone Deletion of a Persistent Volume Claim in case It Is Used by a Pod

A new feature PVC Protection was added into K8s 1.9 that's why this documentation change is needed.

* Added tag at the top of each new area.

* Fix typo

* Fix: switched on in (all kubelets) -> (all K8s components).

* Added link to admission controller

* Moved PVC Protection configuration into Before you begin section.

* Added steps how to verify PVC Protection feature.

* Fixes for admission controller plugin description and for PVC Protection description in PVC lifecycle.

* Testing official rendering of enumerations (1., 2., 3., etc.)

* Re-write to address comments from review.

* Fixed definition when a PVC is in active use by a pod.

* Change auditing docs page for 1.9 release (#6427)

* Change auditing docs page for 1.9 release

Signed-off-by: Mik Vyatskov <vmik@google.com>

* Address review comments

Signed-off-by: Mik Vyatskov <vmik@google.com>

* Address review comments

Signed-off-by: Mik Vyatskov <vmik@google.com>

* Address review comments

Signed-off-by: Mik Vyatskov <vmik@google.com>

* Fix broken link

Signed-off-by: Mik Vyatskov <vmik@google.com>

* short circuit deny docs (#6536)

* line wrap

* short circuit deny

* address comments

* Add kubeadm 1.9 upgrade docs (#6485)

* kubeadm: Improve kubeadm documentation for v1.9 (#6645)

* Update admission control docs for webhooks (re-send #6368) (#6650)

* Update admission control docs for webhooks

* update in response to comments

* Revamp rkt and add CRI-O as alternative runtime (#6371)

Signed-off-by: Lorenzo Fontana <lo@linux.com>

* Documented NLB for Kubernetes 1.9 (#6260)

* Added IPV6 information to setup cluster using kubeadm (#6465)

* Added IPV6 information to setup cluster using kubeadm

* Updated kubeadm.md & create-cluster-kubeadm.md with IPv6 related information

* Added IPv6 options for kubeadm --init  & automated address binding for kube-proxy based on version of IP configured for API server)

* Changes to kubeadm.md as per comments

* Modified kubeadm.md and create-cluster-kubeadm.md

* Implemented changes requested by zacharysarah

* Removed autogenerated kubeadm.md changes

* StatefulSet 1.9 updates. (#6550)

* updates sts concept and tutorials to use 1.9 apps/v1

* Update statefulset.md

* clarify pod name label

* Garbage collection updates for 1.9 (#6555)

* 1.9 gc policy update

* carify deletion

* Couple nits for dnsConfig doc (#6652)

* Add doc for AllowedFlexVolume (#6563)

* Update OpenStack Cloud Provider API support for v1.9 (#6638)

* Flex volume is GA. Remove alpha notation. (#6666)

* Update generated ref docs for Kubernetes and Federation components. (#6658)

* Update generated ref docs for Kubernetes and Federation components.

* Rename kubectl-options to kubectl.

* Add title to kubectl.

* Fix double synopsis.

* Update Federation API ref docs for 1.9. (#6636)

* Update federation API ref docs.

* Move and redirect.

* Move generated Federation docs to the generated directory.

* Fix titles.

* Type

* Fix titles

* Update auto-generated Kubernetes APi ref docs. (#6646)

* Update kubectl commands for 1.9 (#6635)

* add ExtendedResourceToleration admission controller (#6618)

* Update API reference paths for v1.9 (#6681)
This commit is contained in:
Zach Corleissen
2017-12-15 17:36:13 -06:00
committed by GitHub
parent 0e628e7895
commit 08af95d42e
893 changed files with 131178 additions and 105058 deletions
+43 -20
View File
@@ -8,20 +8,34 @@ title: Overview
---
{% capture overview %}
Learn more about Kubernetes authorization, including details about creating policies using the supported authorization modules.
Learn more about Kubernetes authorization, including details about creating
policies using the supported authorization modules.
{% endcapture %}
{% capture body %}
In Kubernetes, you must be authenticated (logged in) before your request can be authorized (granted permission to access). For information about authentication, see [Accessing Control Overview](/docs/admin/accessing-the-api/).
In Kubernetes, you must be authenticated (logged in) before your request can be
authorized (granted permission to access). For information about authentication,
see [Accessing Control Overview](/docs/admin/accessing-the-api/).
Kubernetes expects attributes that are common to REST API requests. This means that Kubernetes authorization works with existing organization-wide or cloud-provider-wide access control systems which may handle other APIs besides the Kubernetes API.
Kubernetes expects attributes that are common to REST API requests. This means
that Kubernetes authorization works with existing organization-wide or
cloud-provider-wide access control systems which may handle other APIs besides
the Kubernetes API.
## Determine Whether a Request is Allowed or Denied
Kubernetes authorizes API requests using the API server. It evaluates all of the request attributes against all policies and allows or denies the request. All parts of an API request must be allowed by some policy in order to proceed. This means that permissions are denied by default.
Kubernetes authorizes API requests using the API server. It evaluates all of the
request attributes against all policies and allows or denies the request. All
parts of an API request must be allowed by some policy in order to proceed. This
means that permissions are denied by default.
(Although Kubernetes uses the API server, access controls and policies that depend on specific fields of specific kinds of objects are handled by Admission Controllers.)
(Although Kubernetes uses the API server, access controls and policies that
depend on specific fields of specific kinds of objects are handled by Admission
Controllers.)
When multiple authorization modules are configured, each is checked in sequence, and if any module authorizes the request, then the request can proceed. If all modules deny the request, then the request is denied (HTTP status code 403).
When multiple authorization modules are configured, each is checked in sequence.
If any authorizer approves or denies a request, that decision is immediately
returned and no other authorizer is consulted. If all modules have no opinion on
the request, then the request is denied. A deny returns an HTTP status code 403.
## Review Your Request Attributes
Kubernetes reviews only the following API request attributes:
@@ -33,14 +47,15 @@ Kubernetes reviews only the following API request attributes:
* **Request path** - Path to miscellaneous non-resource endpoints like `/api` or `/healthz`.
* **API request verb** - API verbs `get`, `list`, `create`, `update`, `patch`, `watch`, `proxy`, `redirect`, `delete`, and `deletecollection` are used for resource requests. To determine the request verb for a resource API endpoint, see **Determine the request verb** below.
* **HTTP request verb** - HTTP verbs `get`, `post`, `put`, and `delete` are used for non-resource requests.
* **Resource** - The ID or name of the resource that is being accessed (for resource requests only)
--* For resource requests using `get`, `update`, `patch`, and `delete` verbs, you must provide the resource name.
* **Resource** - The ID or name of the resource that is being accessed (for resource requests only) -- For resource requests using `get`, `update`, `patch`, and `delete` verbs, you must provide the resource name.
* **Subresource** - The subresource that is being accessed (for resource requests only).
* **Namespace** - The namespace of the object that is being accessed (for namespaced resource requests only).
* **API group** - The API group being accessed (for resource requests only). An empty string designates the [core API group](/docs/concepts/overview/kubernetes-api/).
## Determine the Request Verb
To determine the request verb for a resource API endpoint, review the HTTP verb used and whether or not the request acts on an individual resource or a collection of resources:
To determine the request verb for a resource API endpoint, review the HTTP verb
used and whether or not the request acts on an individual resource or a
collection of resources:
HTTP verb | request verb
----------|---------------
@@ -87,8 +102,9 @@ $ kubectl auth can-i list secrets --namespace dev --as dave
no
```
`SelfSubjectAccessReview` is part of the `authorization.k8s.io` API group, which exposes the
API server authorization to external services. Other resources in this group include:
`SelfSubjectAccessReview` is part of the `authorization.k8s.io` API group, which
exposes the API server authorization to external services. Other resources in
this group include:
* `SubjectAccessReview` - Access review for any user, not just the current one. Useful for delegating authorization decisions to the API server. For example, the kubelet and extension API servers use this to determine user access to their own APIs.
* `LocalSubjectAccessReview` - Like `SubjectAccessReview` but restricted to a specific namespace.
@@ -121,11 +137,13 @@ spec:
verb: create
status:
allowed: true
denied: false
```
## Using Flags for Your Authorization Module
You must include a flag in your policy to indicate which authorization module your policies include:
You must include a flag in your policy to indicate which authorization module
your policies include:
The following flags can be used:
@@ -136,12 +154,8 @@ The following flags can be used:
* `--authorization-mode=AlwaysDeny` This flag blocks all requests. Use this flag only for testing.
* `--authorization-mode=AlwaysAllow` This flag allows all requests. Use this flag only if you do not require authorization for your API requests.
You can choose more than one authorization module. If one of the modes is `AlwaysAllow`, then it overrides the other modes and all API requests are allowed.
## Versioning
For version 1.2, clusters created by kube-up.sh are configured so that no authorization is required for any request.
As of version 1.3, clusters created by kube-up.sh are configured so that the ABAC authorization modules are enabled. However, its input file is initially set to allow all users to do all operations. The cluster administrator needs to edit that file, or configure a different authorizer to restrict what users can do.
You can choose more than one authorization module. Modules are checked in order
so an earlier module has higher priority to allow or deny a request.
{% endcapture %}
{% capture whatsnext %}
@@ -153,7 +167,16 @@ As of version 1.3, clusters created by kube-up.sh are configured so that the A
## Privilege escalation via pod creation
Users who have ability to create pods in a namespace can potentially escalate their privileges within that namespace. They can create pods that access secrets the user cannot themselves read, or that run under a service account with different/greater permissions.
Users who have the ability to create pods in a namespace can potentially
escalate their privileges within that namespace. They can create pods that
access their privileges within that namespace. They can create pods that access
secrets the user cannot themselves read, or that run under a service account
with different/greater permissions.
**Caution:** System administrators, use care when granting access to pod creation. A user granted permission to create pods (or controllers that create pods) in the namespace can: read all secrets in the namespace; read all config maps in the namespace; and impersonate any service account in the namespace and take any action the account could take. This applies regardless of authorization mode.
**Caution:** System administrators, use care when granting access to pod
creation. A user granted permission to create pods (or controllers that create
pods) in the namespace can: read all secrets in the namespace; read all config
maps in the namespace; and impersonate any service account in the namespace and
take any action the account could take. This applies regardless of authorization
mode.
{: .caution}
+83
View File
@@ -191,6 +191,76 @@ Because resource names are not present in the URL for create, list, watch, and d
those verbs would not be allowed by a rule with resourceNames set, since the resourceNames portion of the
rule would not match the request.
### Aggregated ClusterRoles
As of 1.9, ClusterRoles can be created by combining other ClusterRoles using an `aggregationRule`. The
permissions of aggregated ClusterRoles are controller-managed, and filled in by unioning the rules of any
ClusterRole that matches the provided label selector. An example aggregated ClusterRole:
```yaml
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: monitoring
aggregationRule:
clusterRoleSelectors:
- matchLabels:
rbac.example.com/aggregate-to-monitoring: "true"
rules: [] # Rules are automatically filled in by the controller manager.
```
Creating a ClusterRole that matches the label selector will add rules to the aggregated ClusterRole. In this case
rules can be added to the "monitoring" ClusterRole by creating another ClusterRole that has the label
`rbac.example.com/aggregate-to-monitoring: true`.
```yaml
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: monitoring-endpoints
labels:
rbac.example.com/aggregate-to-monitoring: "true"
# These rules will be added to the "monitoring" role.
rules:
- apiGroups: [""]
Resources: ["services", "endpoints", "pods"]
verbs: ["get", "list", "watch"]
```
The default user-facing roles (described below) use ClusterRole aggregation. This lets admins include rules
for custom resources, such as those served by CustomResourceDefinitions or Aggregated API servers, on the
default roles.
For example, the following ClusterRoles let the "admin" and "edit" default roles manage the custom resource
"CronTabs" and the "view" role perform read-only actions on the resource.
```yaml
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: aggregate-cron-tabs-edit
labels:
# Add these permissions to the "admin" and "edit" default roles.
rbac.authorization.k8s.io/aggregate-to-admin: "true"
rbac.authorization.k8s.io/aggregate-to-edit: "true"
rules:
- apiGroups: ["stable.example.com"]
resources: ["crontabs"]
verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: aggregate-cron-tabs-view
labels:
# Add these permissions to the "view" default role.
rbac.authorization.k8s.io/aggregate-to-view: "true"
rules:
- apiGroups: ["stable.example.com"]
resources: ["crontabs"]
verbs: ["get", "list", "watch"]
```
#### Role Examples
Only the `rules` section is shown in the following examples.
@@ -402,6 +472,18 @@ They include super-user roles (`cluster-admin`),
roles intended to be granted cluster-wide using ClusterRoleBindings (`cluster-status`),
and roles intended to be granted within particular namespaces using RoleBindings (`admin`, `edit`, `view`).
As of 1.9, user-facing roles use [ClusterRole Aggregation](#aggregated-clusterroles) to allow admins to include
rules for custom resources on these roles. To add rules to the "admin", "edit", or "view" role, create a
ClusterRole with one or more of the following labels:
```yaml
metadata:
labels:
rbac.authorization.k8s.io/aggregate-to-admin: "true"
rbac.authorization.k8s.io/aggregate-to-edit: "true"
rbac.authorization.k8s.io/aggregate-to-view: "true"
```
<table>
<colgroup><col width="25%"><col width="25%"><col></colgroup>
<tr>
@@ -546,6 +628,7 @@ These roles include:
* system:controller:node-controller
* system:controller:persistent-volume-binder
* system:controller:pod-garbage-collector
* system:controller:pvc-protection-controller
* system:controller:replicaset-controller
* system:controller:replication-controller
* system:controller:resourcequota-controller