Statefulset replicas Update Error

[Krueladin]

BUG REPORT

Version of Helm and Kubernetes:
Helm:
Client: &version.Version{SemVer:"v2.9.1", GitCommit:"20adb27c7c5868466912eebdf6664e7390ebe710", GitTreeState:"clean"}
Server: &version.Version{SemVer:"v2.9.1", GitCommit:"20adb27c7c5868466912eebdf6664e7390ebe710", GitTreeState:"clean"}

Kubernetes:
Client Version: version.Info{Major:"1", Minor:"11", GitVersion:"v1.11.1", GitCommit:"b1b29978270dc22fecc592ac55d903350454310a", GitTreeState:"clean", BuildDate:"2018-07-17T18:53:20Z", GoVersion:"go1.10.3", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"10", GitVersion:"v1.10.6", GitCommit:"a21fdbd78dde8f5447f5f6c331f7eb6f80bd684e", GitTreeState:"clean", BuildDate:"2018-07-26T10:04:08Z", GoVersion:"go1.9.3", Compiler:"gc", Platform:"linux/amd64"}

Which chart:
stable/rabbitmq

sources:

• https://github.com/bitnami/bitnami-docker-rabbitmq
  version: 2.1.1

What happened:
Installed the chart onto the cluster, then ran a helm upgrade command which failed.

Fails with the following error message: Error: UPGRADE FAILED: StatefulSet.apps "warped-zorse-rabbitmq" is invalid: spec: Forbidden: updates to statefulset spec for fields other than 'replicas', 'template', and 'updateStrategy' are forbidden.

What you expected to happen:
Excepted the number of replicas to change from 1 to 5.

How to reproduce it (as minimally and precisely as possible):
helm install stable/rabbitmq
helm upgrade warped-zorse stable/rabbitmq --set replicas=5

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Any further update will cause the issue/pull request to no longer be considered stale. Thank you for your contributions.

[stale]

This issue is being automatically closed due to inactivity.

[Simon3]

See #7803 ?