Merge pull request #46785 from AndrewSirenko/patch-1
KEP-3751 VolumeAttributeClass Beta Promotionpull/47304/head
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6c6ced2239
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@ -8,7 +8,7 @@ weight: 40
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---
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<!-- overview -->
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{{< feature-state for_k8s_version="v1.29" state="alpha" >}}
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{{< feature-state feature_gate_name="VolumeAttributesClass" >}}
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This page assumes that you are familiar with [StorageClasses](/docs/concepts/storage/storage-classes/),
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[volumes](/docs/concepts/storage/volumes/) and [PersistentVolumes](/docs/concepts/storage/persistent-volumes/)
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@ -18,17 +18,23 @@ in Kubernetes.
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A VolumeAttributesClass provides a way for administrators to describe the mutable
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"classes" of storage they offer. Different classes might map to different quality-of-service levels.
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Kubernetes itself is unopinionated about what these classes represent.
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Kubernetes itself is un-opinionated about what these classes represent.
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This is an alpha feature and disabled by default.
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This is a beta feature and disabled by default.
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If you want to test the feature whilst it's alpha, you need to enable the `VolumeAttributesClass`
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If you want to test the feature whilst it's beta, you need to enable the `VolumeAttributesClass`
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[feature gate](/docs/reference/command-line-tools-reference/feature-gates/) for the kube-controller-manager and the kube-apiserver. You use the `--feature-gates` command line argument:
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```
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--feature-gates="...,VolumeAttributesClass=true"
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```
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You will also have to enable the `storage.k8s.io/v1beta1` API group through the `kube-apiserver` [runtime-config](https://kubernetes.io/docs/tasks/administer-cluster/enable-disable-api/). You use the following command line argument:
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```
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--runtime-config=storage.k8s.io/v1beta1=true
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```
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You can also only use VolumeAttributesClasses with storage backed by
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{{< glossary_tooltip text="Container Storage Interface" term_id="csi" >}}, and only where the
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relevant CSI driver implements the `ModifyVolume` API.
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@ -45,7 +51,7 @@ While the name of a VolumeAttributesClass object in a `PersistentVolumeClaim` is
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```yaml
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apiVersion: storage.k8s.io/v1alpha1
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apiVersion: storage.k8s.io/v1beta1
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kind: VolumeAttributesClass
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metadata:
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name: silver
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@ -74,7 +80,7 @@ Each VolumeAttributesClass has a resizer that determines what volume plugin is u
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The modifying volume feature support for VolumeAttributesClass is implemented in [kubernetes-csi/external-resizer](https://github.com/kubernetes-csi/external-resizer).
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For example, a existing PersistentVolumeClaim is using a VolumeAttributesClass named silver:
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For example, an existing PersistentVolumeClaim is using a VolumeAttributesClass named silver:
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```yaml
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apiVersion: v1
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@ -91,7 +97,7 @@ A new VolumeAttributesClass gold is available in the cluster:
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```yaml
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apiVersion: storage.k8s.io/v1alpha1
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apiVersion: storage.k8s.io/v1beta1
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kind: VolumeAttributesClass
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metadata:
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name: gold
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@ -128,4 +134,4 @@ the parameters may be used depends on the CSI driver implementation.
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Please refer to the related CSI driver documentation for more details.
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There can be at most 512 parameters defined for a VolumeAttributesClass.
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The total length of the parameters object including its keys and values cannot exceed 256 KiB.
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The total length of the parameters object including its keys and values cannot exceed 256 KiB.
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@ -6,9 +6,13 @@ _build:
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render: false
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stages:
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- stage: alpha
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- stage: alpha
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defaultValue: false
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fromVersion: "1.29"
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toVersion: "1.30"
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- stage: beta
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defaultValue: false
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fromVersion: "1.31"
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---
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Enable support for VolumeAttributesClasses.
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See [Volume Attributes Classes](/docs/concepts/storage/volume-attributes-classes/)
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