[BUG] Changes to immutable labels prevent migrations to newer chart versions

[dgerhardt]

Describe the bug
The chart's template for the clamav StatefulSet currently sets common labels for volumeClaimTemplates. This is a problem because the labels are immutable and the template sets a value with the chart's version. As a consequence, updates to newer versions of the chart will fail.

Environment

• Kubernetes 1.27
• Helm 3.12
• Mailu chart 1.5.0 (updating from 1.4.0)

Additional context
This seems to be a common pitfall for Helm charts: helm/charts#7803

Manifest excerpt:

apiVersion: apps/v1
kind: StatefulSet
metadata:
  labels:
    # This is fine:
    helm.sh/chart: mailu-1.4.0
  name: mailu-clamav
spec:
  volumeClaimTemplates:
  - apiVersion: v1
    kind: PersistentVolumeClaim
    metadata:
      labels:
        # This causes problems during updates (immutable):
        helm.sh/chart: mailu-1.4.0

[dominch]

same thing failed on my side :/
temporary workaround is to remove clamav StatefulSet before upgrade (so it's recreated)

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days.

[dgerhardt]

Still relevant.

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days.

[github-actions]

This issue was closed because it has been stalled for 5 days with no activity.