doc: example of StorageClass for NFS-provisioning

Signed-off-by: Niels de Vos <ndevos@redhat.com>

examples/nfs/storageclass.yaml

@@ -0,0 +1,49 @@
+---
+apiVersion: storage.k8s.io/v1
+kind: StorageClass
+metadata:
+  name: csi-nfs-sc
+provisioner: nfs.csi.ceph.com
+parameters:
+  # (required) Name of the NFS-cluster as managed by Ceph.
+  nfsCluster: <nfs-cluster>
+
+  # (required) Hostname, ip-address or service that points to the Ceph managed
+  # NFS-server that will be used for mounting the NFS-export.
+  server: <nfs-server>
+
+  #
+  # The parameters below are standard CephFS options, these are used for
+  # managing the underlying CephFS volume.
+  #
+
+  # (required) String representing a Ceph cluster to provision storage from.
+  # Should be unique across all Ceph clusters in use for provisioning,
+  # cannot be greater than 36 bytes in length, and should remain immutable for
+  # the lifetime of the StorageClass in use.
+  # Ensure to create an entry in the configmap named ceph-csi-config, based on
+  # csi-config-map-sample.yaml, to accompany the string chosen to
+  # represent the Ceph cluster in clusterID below
+  clusterID: <cluster-id>
+
+  # (required) CephFS filesystem name into which the volume shall be created
+  # eg: fsName: myfs
+  fsName: <cephfs-name>
+
+  # (optional) Ceph pool into which volume data shall be stored
+  # pool: <cephfs-data-pool>
+
+  # The secrets have to contain user and/or Ceph admin credentials.
+  csi.storage.k8s.io/provisioner-secret-name: csi-cephfs-secret
+  csi.storage.k8s.io/provisioner-secret-namespace: default
+  csi.storage.k8s.io/controller-expand-secret-name: csi-cephfs-secret
+  csi.storage.k8s.io/controller-expand-secret-namespace: default
+  csi.storage.k8s.io/node-stage-secret-name: csi-cephfs-secret
+  csi.storage.k8s.io/node-stage-secret-namespace: default
+
+  # (optional) Prefix to use for naming subvolumes.
+  # If omitted, defaults to "csi-vol-".
+  volumeNamePrefix: nfs-export-
+
+reclaimPolicy: Delete
+allowVolumeExpansion: false