Persistence existingClaim is only used by the admin pod

[ghost]

Is this a BUG REPORT or FEATURE REQUEST? (choose one): BUG REPORT

Version of Helm and Kubernetes: Helm and Tiller v2.14.2 Kubernetes 1.13.7 (AKS)

Which chart: eventstore/eventstore

What happened: When providing the persistence.existingClaim option, only the eventstore-admin pod seems to use the claim. The other eventstore pods create their own persistent volume claims. The PVC we have provided the helm chart is for Azure managed-premium disks.

We are running an EventStore with clusterSize=3 and get the following:

What you expected to happen: We would expect all of the nodes to use the provided PVC and therefore create managed-premium Azure disks, rather than just the admin pod.

How to reproduce it (as minimally and precisely as possible):

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: eventstore
spec:
  accessModes:
  - ReadWriteOnce
  storageClassName: managed-premium
  resources:
    requests:
      storage: 8Gi

helm.exe upgrade --install --set persistence.enabled=true,persistence.existingClaim=eventstore,imageTag=release-5.0.1,clusterSize=3 eventstore eventstore/eventstore