allow parameterize storageClass.provisioner

Signed-off-by: Lize Cai <[email protected]>

Author: lizzzcai

helm/README.md

@@ -142,6 +142,7 @@ provisioner chart and their default values.
 | classes.[n].storageClass                | Create storage class for this class and configure it optionally.                                                               | bool/map | `false`                                                       |
 | classes.[n].storageClass.reclaimPolicy  | Specify reclaimPolicy of storage class, available: Delete/Retain.                                                              | str      | `Delete`                                                      |
 | classes.[n].storageClass.isDefaultClass | Set storage class as default                                                                                                   | bool     | `false`                                                       |
+| classes.[n].storageClass.provisioner    | Specify provisioner of storage class.                                                                                          | str      | `kubernetes.io/no-provisioner`                                |
 | podAnnotations                          | Annotations for each Pod in the DaemonSet.                                                                                     | map      | `-`                                                           |
 | podLabels                               | Labels for each Pod in the DaemonSet.                                                                                          | map      | `-`                                                           |
 | image                                   | Provisioner image.                                                                                                             | str      | `registry.k8s.io/sig-storage/local-volume-provisioner:v2.5.0` |

helm/provisioner/templates/storageclass.yaml

@@ -16,7 +16,11 @@ metadata:
     app.kubernetes.io/name: {{ template "provisioner.name" $ }}
     app.kubernetes.io/managed-by: {{ $.Release.Service }}
     app.kubernetes.io/instance: {{ $.Release.Name }}
-provisioner: kubernetes.io/no-provisioner
+{{- if kindIs "map" $val.storageClass }}
+provisioner: {{ $val.storageClass.provisioner | default "kubernetes.io/no-provisioner" }}
+{{- else }}
+provisioner: "kubernetes.io/no-provisioner"
+{{- end }}
 volumeBindingMode: WaitForFirstConsumer
 {{- if kindIs "map" $val.storageClass }}
 reclaimPolicy: {{ $val.storageClass.reclaimPolicy | default "Delete" }}

helm/provisioner/values.yaml

@@ -82,12 +82,16 @@ classes:
       - "2"
       # or blkdiscard utility by uncommenting the line below.
       #  - "/scripts/blkdiscard.sh"
-      # Uncomment to create storage class object with default configuration.
-      # storageClass: true
-      # Uncomment to create storage class object and configure it.
-      # storageClass:
+    # Uncomment to create storage class object with default configuration.
+    # storageClass: true
+    # Uncomment to create storage class object and configure it.
+    # storageClass:
       # reclaimPolicy: Delete # Available reclaim policies: Delete/Retain, defaults: Delete.
       # isDefaultClass: true # set as default class
+      # If you are using cluster autoscaler to scale the workload using volume provisioned by this storage class,
+      # set the provisioner of the storage class to another value other than the default.
+      # Ref: https://github.com/kubernetes-sigs/sig-storage-local-static-provisioner/issues/288
+      # provisioner: kubernetes.io/no-provisioner
 
 # Defines annotations for each Pod in the DaemonSet.
 podAnnotations: {}