Merge pull request #2 from DataONEorg/feature-1-backup-template

Feature-1: Add `backup` Template

Author: doulikecookiedough

templates/pg_cluster.yaml

@@ -65,3 +65,7 @@ spec:
   storage:
     storageClass: {{ .Values.persistence.storageClass }}
     size: {{ .Values.persistence.size }}
+  {{- with .Values.backup }}
+  backup:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}

values.yaml

@@ -188,3 +188,15 @@ postgresql:
 ##   enabled: false
 ##   source: "source-db"    # must be defined in 'init.externalClusters'
 replica: {}
+  
+## Add backup capability to all clusters
+## https://cloudnative-pg.io/documentation/1.27/backup/
+##
+backup:
+  ## Configure the backup method to use k8s VolumeSnapshots as a default
+  ## https://cloudnative-pg.io/documentation/1.27/appendixes/backup_volumesnapshot/
+  ##
+  volumeSnapshot:
+    ## @param backup.volumeSnapshot.className VolumeSnapshotClass to be used to make backups
+    ##
+    className: csi-cephfsplugin-snapclass