[tempo-distributed] PersistentVolumeClaim for StatefulSets

Set PersistentVolumeClaim for StatefulSets.
Docs: https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#persistentvolumeclaim-retention

Allows an optional automatic PVC cleanup when the storage class has `reclaimPolicy: Delete`

Signed-off-by: Dmytro Sydorov <dmytro.sydorov@bonial.com>

charts/tempo-distributed/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: tempo-distributed
 description: Grafana Tempo in MicroService mode
 type: application
-version: 1.9.1
+version: 1.9.2
 appVersion: 2.4.1
 engine: gotpl
 home: https://grafana.com/docs/tempo/latest/

charts/tempo-distributed/README.md

@@ -495,6 +495,8 @@ The memcached default args are removed and should be provided manually. The sett
 | ingester.persistence.annotations | object | `{}` | Annotations for ingester's persist volume claim |
 | ingester.persistence.enabled | bool | `false` | Enable creating PVCs which is required when using boltdb-shipper |
 | ingester.persistence.inMemory | bool | `false` | use emptyDir with ramdisk instead of PVC. **Please note that all data in ingester will be lost on pod restart** |
+| ingester.persistence.persistentVolumeClaimRetentionPolicy.whenDeleted | string | `"Retain"` |  |
+| ingester.persistence.persistentVolumeClaimRetentionPolicy.whenScaled | string | `"Retain"` |  |
 | ingester.persistence.size | string | `"10Gi"` | Size of persistent or memory disk |
 | ingester.persistence.storageClass | string | `nil` | Storage class to be used. If defined, storageClassName: <storageClass>. If set to "-", storageClassName: "", which disables dynamic provisioning. If empty or set to null, no storageClassName spec is set, choosing the default provisioner (gp2 on AWS, standard on GKE, AWS, and OpenStack). |
 | ingester.podAnnotations | object | `{}` | Annotations for ingester pods |
@@ -590,7 +592,7 @@ The memcached default args are removed and should be provided manually. The sett
 | metricsGenerator.image.tag | string | `nil` | Docker image tag for the metrics-generator image. Overrides `tempo.image.tag` |
 | metricsGenerator.kind | string | `"Deployment"` | Kind of deployment [StatefulSet/Deployment] |
 | metricsGenerator.nodeSelector | object | `{}` | Node selector for metrics-generator pods |
-| metricsGenerator.persistence | object | `{"annotations":{},"enabled":false,"size":"10Gi","storageClass":null}` | Persistence configuration for metrics-generator |
+| metricsGenerator.persistence | object | `{"annotations":{},"enabled":false,"persistentVolumeClaimRetentionPolicy":{"whenDeleted":"Retain","whenScaled":"Retain"},"size":"10Gi","storageClass":null}` | Persistence configuration for metrics-generator |
 | metricsGenerator.persistence.annotations | object | `{}` | Annotations for metrics generator PVCs |
 | metricsGenerator.persistence.enabled | bool | `false` | Enable creating PVCs if you have kind set to StatefulSet. This disables using local disk or memory configured in walEmptyDir |
 | metricsGenerator.persistence.storageClass | string | `nil` | Storage class to be used. If defined, storageClassName: <storageClass>. If set to "-", storageClassName: "", which disables dynamic provisioning. If empty or set to null, no storageClassName spec is set, choosing the default provisioner (gp2 on AWS, standard on GKE, AWS, and OpenStack). |

charts/tempo-distributed/templates/ingester/statefulset-ingester.yaml

@@ -164,4 +164,8 @@ spec:
         resources:
           requests:
             storage: {{ .Values.ingester.persistence.size | quote }}
+        {{- with .Values.ingester.persistence.persistentVolumeClaimRetentionPolicy }}
+        persistentVolumeClaimRetentionPolicy:
+          {{- toYaml . | nindent 10 }}
+        {{- end }}
   {{- end }}

charts/tempo-distributed/values.yaml

@@ -201,6 +201,10 @@ ingester:
     storageClass: null
     # -- Annotations for ingester's persist volume claim
     annotations: {}
+    # Retention policy for PVCs. Possible values: Retain (default) and Delete
+    persistentVolumeClaimRetentionPolicy:
+      whenDeleted: Retain
+      whenScaled: Retain
   config:
     # -- Number of copies of spans to store in the ingester ring
     replication_factor: 3
@@ -308,6 +312,10 @@ metricsGenerator:
     storageClass: null
     # -- Annotations for metrics generator PVCs
     annotations: {}
+    # Retention policy for PVCs. Possible values: Retain (default) and Delete
+    persistentVolumeClaimRetentionPolicy:
+      whenDeleted: Retain
+      whenScaled: Retain
   # -- The EmptyDir location where the /var/tempo will be mounted on. Defaults to local disk, can be set to memory.
   walEmptyDir: {}
     ## Here shows how to configure 1Gi memory as emptyDir.