Add deleting-confirmation-flag setting

Longhorn-4509

Signed-off-by: Phan Le <phan.le@suse.com>

chart/questions.yaml

@@ -549,6 +549,14 @@ WARNING:
   group: "Longhorn Default Settings"
   type: string
   default:
+- variable: defaultSettings.deletingConfirmationFlag
+  label: Deleting Confirmation Flag
+  description: "This flag is designed to prevent Longhorn from being accidentally uninstalled which will lead to data lost.
+	Set this flag to **true** to allow Longhorn uninstallation. 
+	If this flag **false**, Longhorn uninstallation job will fail. "
+  group: "Longhorn Default Settings"
+  type: boolean
+  default: "false"
 - variable: persistence.defaultClass
   default: "true"
   description: "Set as default StorageClass for Longhorn"

chart/templates/default-setting.yaml

@@ -66,3 +66,4 @@ data:
     {{ if not (kindIs "invalid" .Values.defaultSettings.kubernetesClusterAutoscalerEnabled) }}kubernetes-cluster-autoscaler-enabled: {{ .Values.defaultSettings.kubernetesClusterAutoscalerEnabled }}{{ end }}
     {{ if not (kindIs "invalid" .Values.defaultSettings.orphanAutoDeletion) }}orphan-auto-deletion: {{ .Values.defaultSettings.orphanAutoDeletion }}{{ end }}
     {{ if not (kindIs "invalid" .Values.defaultSettings.storageNetwork) }}storage-network: {{ .Values.defaultSettings.storageNetwork }}{{ end }}
+    {{ if not (kindIs "invalid" .Values.defaultSettings.deletingConfirmationFlag) }}deleting-confirmation-flag: {{ .Values.defaultSettings.deletingConfirmationFlag }}{{ end }}

chart/values.yaml

@@ -139,6 +139,7 @@ defaultSettings:
   kubernetesClusterAutoscalerEnabled: ~
   orphanAutoDeletion: ~
   storageNetwork: ~
+  deletingConfirmationFlag: ~
 privateRegistry:
   createSecret: ~
   registryUrl: ~