While upgrading cluster autoscaler using Helm in Kubernetes, getting following error: rendered manifests contain a resource that already exists

Question

I'm trying to upgrade cluster autoscaler using Helm in Kubernetes cluster on AWS EKS from v1.22.2 to v1.23.1 through Terraform. Helm chart version used is 9.24.0. I have already updated the default values file according to v1.23.1.

I get the following error: rendered manifests contain a resource that already exists. Unable to continue with install: ServiceAccount "default" in namespace "cluster-autoscaler" exists and cannot be imported into the current release: invalid ownership metadata; label validation error: missing key "app.kubernetes.io/managed-by": must be set to "Helm"; annotation validation error: missing key "meta.helm.sh/release-name": must be set to "cluster-autoscaler"; annotation validation error: missing key "meta.helm.sh/release-namespace": must be set to "cluster-autoscaler"

How to fix this? What am I doing wrong?

Answer 1

I set rbac.serviceAccount.name in values file to "default". Changing it to "" (leaving it empty) fixed the issue.

rbac.serviceAccount.name is the name of the ServiceAccount to use. If not set and create is true, a name is generated using the fullname template.

Reference: cluster autoscaler - helm chart - values file - rbac.serviceAccount.name