Cannot set existing StorageClass with existingStorageClassName.

[jaggerwang]

Problem

I both tried setting existingStorageClassName under global default_storage or under specific volume to an existing StorageClass ebs-pulsar, but the created PVCs are still using the default StorageClass ebs-gp3.

My custom helm values:

components:
  zookeeper: true
  bookkeeper: true
  autorecovery: true
  broker: true
  functions: true
  proxy: true
  toolset: true
  pulsar_manager: true
monitoring:
  prometheus: false
  grafana: false
volumes:
  persistence: true
default_storage:
  existingStorageClassName: ebs-pulsar
antiAffinity:
  host:
    enabled: true
    mode: required
  zone:
    enabled: true
nodeSelector:
  dedicated: infrastructure
zookeeper:
  volumes:
    data:
      name: data
      size: 40Gi
  tolerations:
    - effect: NoSchedule
      key: dedicated
      operator: Equal
      value: infrastructure
bookkeeper:
  volumes:
    journal:
      name: journal
      size: 20Gi
    ledgers:
      name: ledgers
      size: 100Gi
    ranges:
      name: ranges
      size: 10Gi
  tolerations:
    - effect: NoSchedule
      key: dedicated
      operator: Equal
      value: infrastructure
autorecovery:
  tolerations:
    - effect: NoSchedule
      key: dedicated
      operator: Equal
      value: infrastructure
broker:
  tolerations:
    - effect: NoSchedule
      key: dedicated
      operator: Equal
      value: infrastructure
functions:
  volumes:
    data:
      name: logs
      size: 10Gi
      existingStorageClassName: ebs-pulsar
  tolerations:
    - effect: NoSchedule
      key: dedicated
      operator: Equal
      value: infrastructure
proxy:
  tolerations:
    - effect: NoSchedule
      key: dedicated
      operator: Equal
      value: infrastructure
toolset:
  tolerations:
    - effect: NoSchedule
      key: dedicated
      operator: Equal
      value: infrastructure
pulsar_manager:
  tolerations:
    - effect: NoSchedule
      key: dedicated
      operator: Equal
      value: infrastructure

Env

Kubernetes: v1.21 in EKS
Helm: v3.3.4
Pulsar Chart: v2.7.6

[jaggerwang]

And there is an optimization to suggest, right now it only can set tolerations on each component, not set globally like nodeSelector.

[jaggerwang]

Following the newest Values file, change existingStorageClassName to storageClassName fixed this problem.