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Document SizeMemoryBackedVolumes feature for 1.20

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This commit is contained in:
Derek Carr
2020-11-05 11:31:33 -05:00
parent c0eaf6940a
commit af239416bf
2 changed files with 8 additions and 0 deletions
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content/en/docs/concepts/storage/volumes.md
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@@ -303,6 +303,12 @@ While tmpfs is very fast, be aware that unlike disks, tmpfs is cleared on
node reboot and any files you write count against your container's node reboot and any files you write count against your container's
memory limit. memory limit.
{{< note >}}
If the `SizeMemoryBackedVolumes` [feature gate](/docs/reference/command-line-tools-reference/feature-gates/) is enabled,
you can specify a size for memory backed volumes. If no size is specified, memory
backed volumes are sized to 50% of the memory on a Linux host.
{{< /note>}}
#### emptyDir configuration example #### emptyDir configuration example
```yaml ```yaml
content/en/docs/reference/command-line-tools-reference/feature-gates.md
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@@ -148,6 +148,7 @@ different Kubernetes components.
| `ServiceNodeExclusion` | `false` | Alpha | 1.8 | 1.18 | | `ServiceNodeExclusion` | `false` | Alpha | 1.8 | 1.18 |
| `ServiceNodeExclusion` | `true` | Beta | 1.19 | | | `ServiceNodeExclusion` | `true` | Beta | 1.19 | |
| `ServiceTopology` | `false` | Alpha | 1.17 | | | `ServiceTopology` | `false` | Alpha | 1.17 | |
| `SizeMemoryBackedVolumes` | `false` | Alpha | 1.20 | |
| `SetHostnameAsFQDN` | `false` | Alpha | 1.19 | 1.19 | | `SetHostnameAsFQDN` | `false` | Alpha | 1.19 | 1.19 |
| `SetHostnameAsFQDN` | `true` | Beta | 1.20 | | | `SetHostnameAsFQDN` | `true` | Beta | 1.20 | |
| `StorageVersionHash` | `false` | Alpha | 1.14 | 1.14 | | `StorageVersionHash` | `false` | Alpha | 1.14 | 1.14 |
@@ -527,6 +528,7 @@ Each feature gate is designed for enabling/disabling a specific feature:
- `ServiceNodeExclusion`: Enable the exclusion of nodes from load balancers created by a cloud provider. - `ServiceNodeExclusion`: Enable the exclusion of nodes from load balancers created by a cloud provider.
A node is eligible for exclusion if labelled with "`alpha.service-controller.kubernetes.io/exclude-balancer`" key or `node.kubernetes.io/exclude-from-external-load-balancers`. A node is eligible for exclusion if labelled with "`alpha.service-controller.kubernetes.io/exclude-balancer`" key or `node.kubernetes.io/exclude-from-external-load-balancers`.
- `ServiceTopology`: Enable service to route traffic based upon the Node topology of the cluster. See [ServiceTopology](/docs/concepts/services-networking/service-topology/) for more details. - `ServiceTopology`: Enable service to route traffic based upon the Node topology of the cluster. See [ServiceTopology](/docs/concepts/services-networking/service-topology/) for more details.
- `SizeMemoryBackedVolumes`: Enables kubelet support to size memory backed volumes. See [volumes](docs/concepts/storage/volumes) for more details.
- `SetHostnameAsFQDN`: Enable the ability of setting Fully Qualified Domain Name(FQDN) as hostname of pod. See [Pod's `setHostnameAsFQDN` field](/docs/concepts/services-networking/dns-pod-service/#pod-sethostnameasfqdn-field). - `SetHostnameAsFQDN`: Enable the ability of setting Fully Qualified Domain Name(FQDN) as hostname of pod. See [Pod's `setHostnameAsFQDN` field](/docs/concepts/services-networking/dns-pod-service/#pod-sethostnameasfqdn-field).
- `StartupProbe`: Enable the [startup](/docs/concepts/workloads/pods/pod-lifecycle/#when-should-you-use-a-startup-probe) probe in the kubelet. - `StartupProbe`: Enable the [startup](/docs/concepts/workloads/pods/pod-lifecycle/#when-should-you-use-a-startup-probe) probe in the kubelet.
- `StorageObjectInUseProtection`: Postpone the deletion of PersistentVolume or - `StorageObjectInUseProtection`: Postpone the deletion of PersistentVolume or