uninstall may not cleanup old crd resources

[ysicing]

Bug report

General Information

~$ cilium version
cilium-cli: v0.10.2 compiled with go1.17.6 on linux/amd64
cilium image (default): v1.11.1
cilium image (stable): v1.11.1
cilium image (running): v1.11.1

~$ kubectl version
Client Version: version.Info{Major:"1", Minor:"23", GitVersion:"v1.23.3", GitCommit:"816c97ab8cff8a1c72eccca1026f7820e93e0d25", GitTreeState:"clean", BuildDate:"2022-01-25T21:25:17Z", GoVersion:"go1.17.6", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"23", GitVersion:"v1.23.1+k3s2", GitCommit:"a0cadcd3436745396c82821b4a0803ee460401e1", GitTreeState:"clean", BuildDate:"2022-01-14T08:22:21Z", GoVersion:"go1.17.5", Compiler:"gc", Platform:"linux/amd64"}

uname -a
Linux kubeapi.internal-dev.ops.net 5.15.0-0.bpo.2-amd64 #1 SMP Debian 5.15.5-2~bpo11+1 (2022-01-02) x86_64 GNU/Linux

How to reproduce the issue

I adjusted the CRDR of pod and found that it could not be changed, then uninstalled it and found that it was the same, and finally found that it was caused by the CRD resource created the first time

root@kubeapi.internal-dev.ops.net:~$ kubectl get ciliumnodes
NAME                               AGE
kubeapi.internal-dev.ops.net   5h29m

[aanm]

@ysicing that's working as expected, the same away you can't change pod CIDR from Kubernetes nodes without manually deleting them, you can't change the pod CIDR from CiliumNodes without manually deleting them.

[ysicing]

Normally, I have uninstalled Cilium. Relevant CRD resources should also be cleaned up, not right? @aanm

[aanm]

Normally, I have uninstalled Cilium. Relevant CRD resources should also be cleaned up, not right? @aanm

Not in this case since there's no way to distinguish between an upgrade and an uninstallation. How did you uninstalled Cilium?

[ysicing]

@aanm

 cilium uninstall

[aanm]

Ok in that case I could see that cilium uninstall should have deleted all resources. Feel free to submit a PR that adds a flag cilium uninstall --all that removes all CRDs deployed in the cluster.

[ysicing]

Ok，I'll try to submit a PR

[ydp]

Hi, is there anyone working on this?

[cccsss01]

still seems to be a problem

[github-actions[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.