feat(redis-ha): configure PVC retention policy

charts/redis-ha/Chart.yaml

@@ -5,7 +5,7 @@ keywords:
 - redis
 - keyvalue
 - database
-version: 4.39.0
+version: 4.39.1
 appVersion: 8.8.0
 description: This Helm chart provides a highly available Redis implementation with a master/slave configuration and uses Sentinel sidecars for failover management
 icon: https://img.icons8.com/external-tal-revivo-shadow-tal-revivo/24/external-redis-an-in-memory-data-structure-project-implementing-a-distributed-logo-shadow-tal-revivo.png

charts/redis-ha/README.md

@@ -106,6 +106,10 @@ The following table lists the configurable parameters of the Redis chart and the
 | `persistentVolume.labels` | Labels for the volume | object | `{}` |
 | `persistentVolume.size` | Persistent volume size | string | `"10Gi"` |
 | `persistentVolume.storageClass` | redis-ha data Persistent Volume Storage Class | string | `nil` |
+| `persistentVolumeClaimRetentionPolicy` | Configure whether PersistentVolumeClaims created by the StatefulSet are retained or deleted when the StatefulSet is deleted or scaled down. Requires Kubernetes support for StatefulSet PersistentVolumeClaim retention. | object | `{"enabled":false,"whenDeleted":"Retain","whenScaled":"Retain"}` |
+| `persistentVolumeClaimRetentionPolicy.enabled` | Enable StatefulSet PersistentVolumeClaim retention policy | bool | `false` |
+| `persistentVolumeClaimRetentionPolicy.whenDeleted` | PVC retention behavior when the StatefulSet is deleted. Allowed values: Retain, Delete | string | `"Retain"` |
+| `persistentVolumeClaimRetentionPolicy.whenScaled` | PVC retention behavior when the StatefulSet is scaled down. Allowed values: Retain, Delete | string | `"Retain"` |
 | `podDisruptionBudget` | Pod Disruption Budget rules | object | `{}` |
 | `podManagementPolicy` | The statefulset pod management policy | string | `"OrderedReady"` |
 | `priorityClassName` | Kubernetes priorityClass name for the redis-ha-server pod | string | `""` |

charts/redis-ha/templates/redis-ha-statefulset.yaml

@@ -23,6 +23,11 @@ spec:
   serviceName: {{ template "redis-ha.fullname" . }}
   replicas: {{ .Values.replicas }}
   podManagementPolicy: {{ .Values.podManagementPolicy }}
+  {{- if .Values.persistentVolumeClaimRetentionPolicy.enabled }}
+  persistentVolumeClaimRetentionPolicy:
+    whenDeleted: {{ .Values.persistentVolumeClaimRetentionPolicy.whenDeleted }}
+    whenScaled: {{ .Values.persistentVolumeClaimRetentionPolicy.whenScaled }}
+  {{- end }}
   updateStrategy:
     type: {{ .Values.redis.updateStrategy.type }}
   {{- if .Values.redis.minReadySeconds }}

charts/redis-ha/values.yaml

@@ -914,6 +914,18 @@ persistentVolume:
   annotations: {}
   # -- Labels for the volume
   labels: {}
+
+# -- Configure whether PersistentVolumeClaims created by the StatefulSet are
+# retained or deleted when the StatefulSet is deleted or scaled down.
+# Requires Kubernetes support for StatefulSet PersistentVolumeClaim retention.
+persistentVolumeClaimRetentionPolicy:
+  # -- Enable StatefulSet PersistentVolumeClaim retention policy
+  enabled: false
+  # -- PVC retention behavior when the StatefulSet is deleted. Allowed values: Retain, Delete
+  whenDeleted: Retain
+  # -- PVC retention behavior when the StatefulSet is scaled down. Allowed values: Retain, Delete
+  whenScaled: Retain
+
 init:
   # -- Extra init resources
   resources: {}