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Merge pull request #26800 from pohly/storage-capacity-beta

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storage capacity: beta
This commit is contained in:
Kubernetes Prow Robot
2021-03-11 17:48:18 -08:00
committed by GitHub
parent 74b2a80ef2 f5aaf40e88
commit be14fc367d
2 changed files with 7 additions and 29 deletions
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content/en/docs/concepts/storage/storage-capacity.md
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@@ -17,6 +17,7 @@ which a pod runs: network-attached storage might not be accessible by
all nodes, or storage is local to a node to begin with.
{{< feature-state for_k8s_version="v1.19" state="alpha" >}}
{{< feature-state for_k8s_version="v1.21" state="beta" >}}
This page describes how Kubernetes keeps track of storage capacity and
how the scheduler uses that information to schedule Pods onto nodes
@@ -103,34 +104,10 @@ to handle this automatically.
## Enabling storage capacity tracking
Storage capacity tracking is an *alpha feature* and only enabled when
the `CSIStorageCapacity` [feature
gate](/docs/reference/command-line-tools-reference/feature-gates/) and
the `storage.k8s.io/v1alpha1` {{< glossary_tooltip text="API group" term_id="api-group" >}} are enabled. For details on
that, see the `--feature-gates` and `--runtime-config` [kube-apiserver
parameters](/docs/reference/command-line-tools-reference/kube-apiserver/).
A quick check
whether a Kubernetes cluster supports the feature is to list
CSIStorageCapacity objects with:
```shell
kubectl get csistoragecapacities --all-namespaces
```
If your cluster supports CSIStorageCapacity, the response is either a list of CSIStorageCapacity objects or:
```
No resources found
```
If not supported, this error is printed instead:
```
error: the server doesn't have a resource type "csistoragecapacities"
```
In addition to enabling the feature in the cluster, a CSI
driver also has to
support it. Please refer to the driver's documentation for
details.
Storage capacity tracking is a beta feature and enabled by default in
a Kubernetes cluster since Kubernetes 1.21. In addition to having the
feature enabled in the cluster, a CSI driver also has to support
it. Please refer to the driver's documentation for details.
## {{% heading "whatsnext" %}}
content/en/docs/reference/command-line-tools-reference/feature-gates.md
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@@ -85,7 +85,8 @@ different Kubernetes components.
| `CSIMigrationvSphere` | `false` | Beta | 1.19 | |
| `CSIMigrationvSphereComplete` | `false` | Beta | 1.19 | |
| `CSIServiceAccountToken` | `false` | Alpha | 1.20 | |
| `CSIStorageCapacity` | `false` | Alpha | 1.19 | |
| `CSIStorageCapacity` | `false` | Alpha | 1.19 | 1.20 |
| `CSIStorageCapacity` | `true` | Beta | 1.21 | |
| `CSIVolumeFSGroupPolicy` | `false` | Alpha | 1.19 | 1.19 |
| `CSIVolumeFSGroupPolicy` | `true` | Beta | 1.20 | |
| `ConfigurableFSGroupPolicy` | `false` | Alpha | 1.18 | 1.19 |