helm: Support VolumeSnapshotClass and VolumeGroupSnapshotClass

This PR add support for creating VolumeSnapshotClass and
VolumeGroupSnapshotClass with helm charts. Both default with
`create: false` as StorageClass support.

Moreover, it handle the chart release with branch `gh-pages`, by
integrate with <https://github.com/helm/chart-releaser-action>.

The sample helm repo could find from
<https://alvistack.github.io/ceph-ceph-csi/index.yaml>, by:

    helm repo add ceph-csi https://alvistack.github.io/ceph-ceph-csi
    helm repo update
    helm search repo ceph-csi

Signed-off-by: Wong Hoi Sing Edison <hswong3i@pantarei-design.com>

Author: hswong3i

PendingReleaseNotes.md

@@ -12,5 +12,6 @@
 - cephfs: support omap data store in radosnamespace [PR](https://github.com/ceph/ceph-csi/pull/4661)
 - helm: Support setting nodepluigin and provisioner annotations
 - rbd: fix encrypted PVC with metadata KMS cannot be deleted
+- helm: Support VolumeSnapshotClass and VolumeGroupSnapshotClass
 
 ## NOTE

charts/ceph-csi-cephfs/README.md

@@ -0,0 +1,30 @@
+{{- if .Values.volumeGroupSnapshotClass.create -}}
+apiVersion: groupsnapshot.storage.k8s.io/v1beta1
+kind: VolumeGroupSnapshotClass
+metadata:
+  name: {{ .Values.volumeGroupSnapshotClass.name }}
+{{- if .Values.volumeGroupSnapshotClass.annotations }}
+  annotations:
+{{ toYaml .Values.volumeGroupSnapshotClass.annotations | indent 4 }}
+{{- end }}
+  labels:
+    app: {{ include "ceph-csi-cephfs.name" . }}
+    chart: {{ include "ceph-csi-cephfs.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+    {{- with .Values.commonLabels }}{{ toYaml . | trim | nindent 4 }}{{- end }}
+driver: {{ .Values.driverName }}
+parameters:
+  clusterID: {{ .Values.volumeGroupSnapshotClass.clusterID }}
+  fsName: {{ .Values.volumeGroupSnapshotClass.fsName }}
+{{- if .Values.volumeGroupSnapshotClass.volumeGroupNamePrefix }}
+  volumeGroupNamePrefix: "{{ .Values.volumeGroupSnapshotClass.volumeGroupNamePrefix }}"
+{{- end }}
+  csi.storage.k8s.io/group-snapshotter-secret-name: {{ .Values.volumeGroupSnapshotClass.groupSnapshotterSecret }}
+{{- if .Values.volumeGroupSnapshotClass.groupSnapshotterSecretNamespace }}
+  csi.storage.k8s.io/group-snapshotter-secret-namespace: {{ .Values.volumeGroupSnapshotClass.groupSnapshotterSecretNamespace }}
+{{ else }}
+csi.storage.k8s.io/group-snapshotter-secret-namespace: {{ .Release.Namespace }}
+{{- end }}
+deletionPolicy: {{ .Values.volumeGroupSnapshotClass.deletionPolicy }}
+{{- end -}}

charts/ceph-csi-cephfs/templates/groupsnapshotclass.yaml

@@ -0,0 +1,29 @@
+{{- if .Values.volumeSnapshotClass.create -}}
+apiVersion: snapshot.storage.k8s.io/v1
+kind: VolumeSnapshotClass
+metadata:
+  name: {{ .Values.volumeSnapshotClass.name }}
+{{- if .Values.volumeSnapshotClass.annotations }}
+  annotations:
+{{ toYaml .Values.volumeSnapshotClass.annotations | indent 4 }}
+{{- end }}
+  labels:
+    app: {{ include "ceph-csi-cephfs.name" . }}
+    chart: {{ include "ceph-csi-cephfs.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+    {{- with .Values.commonLabels }}{{ toYaml . | trim | nindent 4 }}{{- end }}
+driver: {{ .Values.driverName }}
+parameters:
+  clusterID: {{ .Values.volumeSnapshotClass.clusterID }}
+{{- if .Values.volumeSnapshotClass.snapshotNamePrefix }}
+  snapshotNamePrefix: "{{ .Values.volumeSnapshotClass.snapshotNamePrefix }}"
+{{- end }}
+  csi.storage.k8s.io/snapshotter-secret-name: {{ .Values.volumeSnapshotClass.snapshotterSecret }}
+{{- if .Values.volumeSnapshotClass.snapshotterSecretNamespace }}
+  csi.storage.k8s.io/snapshotter-secret-namespace: {{ .Values.volumeSnapshotClass.snapshotterSecretNamespace }}
+{{ else }}
+  csi.storage.k8s.io/snapshotter-secret-namespace: {{ .Release.Namespace }}
+{{- end }}
+deletionPolicy: {{ .Values.volumeSnapshotClass.deletionPolicy }}
+{{- end -}}

charts/ceph-csi-cephfs/templates/snapshotclass.yaml

@@ -375,6 +375,71 @@ storageClass:
   # mountOptions:
   #   - discard
 
+volumeSnapshotClass:
+  # Specifies whether the Volume Snapshot class should be created
+  create: false
+  name: csi-cephfsplugin-snapclass
+
+  # Annotations for the Volume Snapshot class
+  # Example:
+  # annotations:
+  #   storageclass.kubernetes.io/is-default-class: "true"
+  annotations: {}
+
+  # String representing a Ceph cluster to provision storage snapshot 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>
+
+  # Prefix to use for naming CephFS snapshots.
+  # If omitted, defaults to "csi-snap-".
+  # snapshotNamePrefix: "foo-bar-"
+  snapshotNamePrefix: ""
+
+  # The secrets have to contain user and/or Ceph admin credentials.
+  snapshotterSecret: csi-cephfs-secret
+  # If the Namespaces are not specified, the secrets are assumed to
+  # be in the Release namespace.
+  snapshotterSecretNamespace: ""
+
+  deletionPolicy: Delete
+
+volumeGroupSnapshotClass:
+  # Specifies whether the Volume Group Snapshot class should be created
+  create: false
+  name: csi-cephfsplugin-groupsnapclass
+
+  # Annotations for the Volume Snapshot class
+  # Example:
+  # annotations:
+  #   storageclass.kubernetes.io/is-default-class: "true"
+  annotations: {}
+
+  # 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
+  clusterID: <cluster-id>
+
+  # eg: fsName: myfs
+  fsName: myfs
+
+  # (optional) Prefix to use for naming RBD groups.
+  # If omitted, defaults to "csi-vol-group-".
+  volumeGroupNamePrefix: ""
+
+  # The secrets have to contain user and/or Ceph admin credentials.
+  groupSnapshotterSecret: csi-cephfs-secret
+  # If the Namespaces are not specified, the secrets are assumed to
+  # be in the Release namespace.
+  groupSnapshotterSecretNamespace: ""
+
+  deletionPolicy: Delete
+
 secret:
   # Specifies whether the secret should be created
   create: false