add ability to set storage class for cluster PVC

Author: cloudymax

charts/cloudnative-pg-cluster/README.md

@@ -43,6 +43,7 @@ Create postgres tenant clusters managed by the CNPG Operator
 | resources | object | `{}` |  |
 | scheduledBackup | object | `{}` | schduled backups section, please see values.yaml for example |
 | storage.size | string | `"1Gi"` | how much storage to allocate to the postgresql cluster |
+| storage.storageClass | string | `"default"` | set the storage class of the PVC. |
 | superuserSecret | string | `""` | name of existing secret to use as superuser redentials will be randomly generated if not specified. |
 | testApp.enabled | bool | `false` |  |
 | type | string | `"postgresql"` | Type of the CNPG database. Available types: * `postgresql` * `postgis` * `timescaledb` |

charts/cloudnative-pg-cluster/templates/cnpg_cluster.yaml

@@ -41,6 +41,9 @@ spec:
   {{- end }}
   storage:
     size: {{ .Values.storage.size }}
+    {{- if ne .Values.storage.storageClass "default" }}
+    storageClass: {{ .Values.storage.storageClass }}
+    {{- end }}
   {{- with .Values.bootstrap }}
   bootstrap:
     {{- toYaml . | nindent 4 }}

charts/cloudnative-pg-cluster/values.yaml

@@ -168,6 +168,8 @@ postgresql:
 storage:
   # -- how much storage to allocate to the postgresql cluster
   size: 1Gi
+  # -- set the storage class of the PVC.
+  storageClass: default
 
 # from https://cloudnative-pg.io/documentation/1.22/resource_management/
 resources: {}