Add existingClaim option.

charts/influxdb/Chart.yaml

 apiVersion: v1
 name: influxdb
-version: 4.3.6
+version: 4.4.0
 appVersion: 1.7.10
 description: Scalable datastore for metrics, events, and real-time analytics.
 keywords:

charts/influxdb/README.md

@@ -60,6 +60,7 @@ The command removes all the Kubernetes components associated with the chart and
 | startupProbe | Health check for pod | {} |
 | service.type | Kubernetes service type | ClusterIP |
 | persistence.enabled | Boolean to enable and disable persistance | true |
+| persistence.existingClaim | An existing PersistentVolumeClaim | nil |
 | persistence.storageClass | If set to "-", storageClassName: "", which disables dynamic provisioning. If undefined (the default) or set to null, no storageClassName spec is set, choosing the default provisioner.  (gp2 on AWS, standard on GKE, AWS & OpenStack |  |
 | persistence.annotations | Annotations for volumeClaimTemplates | nil |
 | persistence.accessMode | Access mode for the volume | ReadWriteOnce |

charts/influxdb/templates/statefulset.yaml

@@ -126,7 +126,12 @@ spec:
       - name: {{ include "influxdb.fullname" . }}-data
         emptyDir: {}
       {{- end }}
-{{- if .Values.persistence.enabled }}
+      {{- if and .Values.persistence.enabled .Values.persistence.existingClaim }}
+      - name: {{ include "influxdb.fullname" . }}-data
+        persistentVolumeClaim:
+          claimName: {{ .Values.persistence.existingClaim }}
+      {{- end }}
+  {{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) }}
   volumeClaimTemplates:
     - metadata:
         name: {{ include "influxdb.fullname" . }}-data
@@ -147,4 +152,4 @@ spec:
         storageClassName: "{{ .Values.persistence.storageClass }}"
       {{- end }}
       {{- end }}
-{{- end }}
+  {{- end }}

charts/influxdb/values.yaml

@@ -44,6 +44,10 @@ service:
 ##
 persistence:
   enabled: true
+  ## A manually managed Persistent Volume and Claim
+  ## Requires persistence.enabled: true
+  ## If defined, PVC must be created manually before volume will be bound
+  # existingClaim:
   ## influxdb data Persistent Volume Storage Class
   ## If defined, storageClassName: <storageClass>
   ## If set to "-", storageClassName: "", which disables dynamic provisioning