Merge pull request #30686 from chetak123/flexVolume_deprecated

Mark FlexVolume deprecated

content/en/docs/concepts/extend-kubernetes/_index.md

@@ -77,7 +77,7 @@ failure.
 In the webhook model, Kubernetes makes a network request to a remote service.
 In the *Binary Plugin* model, Kubernetes executes a binary (program).
 Binary plugins are used by the kubelet (e.g.
-[Flex Volume Plugins](/docs/concepts/storage/volumes/#flexVolume)
+[Flex Volume Plugins](/docs/concepts/storage/volumes/#flexvolume)
 and [Network Plugins](/docs/concepts/extend-kubernetes/compute-storage-net/network-plugins/))
 and by kubectl.
 
@@ -163,6 +163,8 @@ After a request is authorized, if it is a write operation, it also goes through
 ) allow users to mount volume types without built-in support by having the
 Kubelet call a Binary Plugin to mount the volume.
 
+FlexVolume is deprecated since Kubernetes v1.23. The Out-of-tree CSI driver is the recommended way to write volume drivers in Kubernetes. See [Kubernetes Volume Plugin FAQ for Storage Vendors](https://github.com/kubernetes/community/blob/master/sig-storage/volume-plugin-faq.md#kubernetes-volume-plugin-faq-for-storage-vendors) for more information.
+
 
 ### Device Plugins
 

content/en/docs/concepts/storage/persistent-volumes.md

@@ -347,7 +347,6 @@ PersistentVolume types are implemented as plugins. Kubernetes currently supports
 * [`cephfs`](/docs/concepts/storage/volumes/#cephfs) - CephFS volume
 * [`csi`](/docs/concepts/storage/volumes/#csi) - Container Storage Interface (CSI)
 * [`fc`](/docs/concepts/storage/volumes/#fc) - Fibre Channel (FC) storage
-* [`flexVolume`](/docs/concepts/storage/volumes/#flexVolume) - FlexVolume
 * [`gcePersistentDisk`](/docs/concepts/storage/volumes/#gcepersistentdisk) - GCE Persistent Disk
 * [`glusterfs`](/docs/concepts/storage/volumes/#glusterfs) - Glusterfs volume
 * [`hostPath`](/docs/concepts/storage/volumes/#hostpath) - HostPath volume
@@ -363,6 +362,8 @@ PersistentVolume types are implemented as plugins. Kubernetes currently supports
 
 The following types of PersistentVolume are deprecated. This means that support is still available but will be removed in a future Kubernetes release.
 
+* [`flexVolume`](/docs/concepts/storage/volumes/#flexvolume) - FlexVolume
+  (**deprecated** in v1.23)
 * [`cinder`](/docs/concepts/storage/volumes/#cinder) - Cinder (OpenStack block storage)
   (**deprecated** in v1.18)
 * [`flocker`](/docs/concepts/storage/volumes/#flocker) - Flocker storage