Argocd Version upgrade redis-ha tried to modify immutable field

[tppalani]

Describe the bug

When upgrading the ArgoCD Helm chart to version 9.1.0 or higher (with the updated redis-ha dependency), the upgrade fails with an error about immutable selector labels for the argocd-redis-ha-haproxy Deployment.

Deployment.apps "argocd-redis-ha-haproxy" is invalid: spec.selector: Invalid value: v1.LabelSelector{...}: field is immutable

Related helm chart

argo-cd

Helm chart version

9.1.0 to 9.1.5

To Reproduce

1. Deploy ArgoCD using the Helm chart with redis-ha enabled.
2. Upgrade to chart version 9.1.0 or higher.
3. Observe the error during the upgrade process.

Expected behavior

The upgrade should succeed without requiring manual deletion of the Deployment.

• Helm chart version: 9.1.0 and above
• Kubernetes version: [1.33]
• Deployment method: [Terraform module with helm installtion]

Screenshots

No response

Additional context

Is it possible to provide a migration path or automated solution for this upgrade scenario, especially for users managing deployments via Terraform or GitOps?

The workaround is to manually delete the argocd-redis-ha-haproxy Deployment before upgrading, but deleting resources manually using kubectl is not advisable in production clusters, especially when using automated tools like Terraform or GitOps.

[yu-croco]

Hi @tppalani , you missed changelog and it helps you ?
https://github.com/argoproj/argo-helm/tree/main/charts/argo-cd#910