"helm delete tidb-operator --purge" doesn't delete tidb-controller-manager Deployment

[shonge]

Bug Report

What version of Kubernetes are you using?

v1.18.2

What version of helm are you using?
v2.9.1

What version of TiDB Operator are you using?

v1.1.7

What storage classes exist in the Kubernetes cluster and what are used for PD/TiKV pods?

NAME                      PROVISIONER                    RECLAIMPOLICY   VOLUMEBINDINGMODE      ALLOWVOLUMEEXPANSION   AGE
local-storage (default)   kubernetes.io/no-provisioner   Delete          WaitForFirstConsumer   false                  19h
standard                  rancher.io/local-path          Delete          WaitForFirstConsumer   false                  19h

What's the status of the TiDB cluster pods?

What did you do?

[root@localhost tidb-operator]# helm install --name tidb-operator --namespace tidb-admin pingcap/tidb-operator
NAME:   tidb-operator
LAST DEPLOYED: Thu Dec 17 00:46:04 2020
NAMESPACE: tidb-admin
STATUS: DEPLOYED

RESOURCES:
==> v1/Deployment
NAME                     DESIRED  CURRENT  UP-TO-DATE  AVAILABLE  AGE
tidb-controller-manager  1        1        1           0          1s
tidb-scheduler           1        1        1           0          1s

==> v1/Pod(related)
NAME                                      READY  STATUS             RESTARTS  AGE
tidb-controller-manager-7bbc47cfb5-fzxs9  0/1    ContainerCreating  0         1s
tidb-scheduler-9df5c9fcd-65lwr            0/2    ContainerCreating  0         1s

==> v1/ConfigMap
NAME                   DATA  AGE
tidb-scheduler-policy  1     1s

==> v1/ServiceAccount
NAME                     SECRETS  AGE
tidb-controller-manager  1        1s
tidb-scheduler           1        1s

==> v1beta1/ClusterRole
NAME                                   AGE
tidb-operator:tidb-controller-manager  1s
tidb-operator:tidb-scheduler           1s

==> v1beta1/ClusterRoleBinding
NAME                                   AGE
tidb-operator:tidb-controller-manager  1s
tidb-operator:kube-scheduler           1s
tidb-operator:tidb-scheduler           1s
tidb-operator:volume-scheduler         1s


NOTES:
Make sure tidb-operator components are running:

    kubectl get pods --namespace tidb-admin -l app.kubernetes.io/instance=tidb-operator

[root@localhost tidb-operator]# helm ls
NAME            REVISION        UPDATED                         STATUS          CHART                   APP VERSION     NAMESPACE
tidb-operator   1               Thu Dec 17 00:46:04 2020        DEPLOYED        tidb-operator-v1.1.7    v1.1.7          tidb-admin
[root@localhost tidb-operator]# kubectl -n tidb-admin get deploy
NAME                      READY   UP-TO-DATE   AVAILABLE   AGE
tidb-controller-manager   1/1     1            1           17s
tidb-scheduler            1/1     1            1           17s
[root@localhost tidb-operator]# helm delete tidb-operator --purge
release "tidb-operator" deleted

What did you expect to see?
tidb-controller-manager and tidb-scheduler be deleted

What did you see instead?

[root@localhost tidb-operator]# helm ls --all
[root@localhost tidb-operator]# kubectl -n tidb-admin get deploy
NAME                      READY   UP-TO-DATE   AVAILABLE   AGE
tidb-controller-manager   1/1     1            1           2m34s
tidb-scheduler            1/1     1            1           2m34s

Tiller's log:

[tiller] 2020/12/16 16:47:32 uninstall: Deleting tidb-operator
[tiller] 2020/12/16 16:47:32 executing 0 pre-delete hooks for tidb-operator
[tiller] 2020/12/16 16:47:32 hooks complete for pre-delete tidb-operator
[storage] 2020/12/16 16:47:32 updating release "tidb-operator.v1"
[kube] 2020/12/16 16:47:32 warning: failed to load schema: SchemaError(io.k8s.api.networking.v1.IPBlock): invalid object doesn't have additional properties
[kube] 2020/12/16 16:47:32 Starting delete for "tidb-scheduler" Deployment
[kube] 2020/12/16 16:47:32 Using reaper for deleting "tidb-scheduler"
[kube] 2020/12/16 16:47:32 the server could not find the requested resource
[kube] 2020/12/16 16:47:32 warning: failed to load schema: SchemaError(io.k8s.api.networking.v1.IPBlock): invalid object doesn't have additional properties
[kube] 2020/12/16 16:47:32 Starting delete for "tidb-controller-manager" Deployment
[kube] 2020/12/16 16:47:32 Using reaper for deleting "tidb-controller-manager"
[kube] 2020/12/16 16:47:32 the server could not find the requested resource
[kube] 2020/12/16 16:47:32 warning: failed to load schema: SchemaError(io.k8s.api.networking.v1.IPBlock): invalid object doesn't have additional properties
[kube] 2020/12/16 16:47:32 Starting delete for "tidb-operator:tidb-controller-manager" ClusterRoleBinding
[kube] 2020/12/16 16:47:32 warning: failed to load schema: SchemaError(io.k8s.api.networking.v1.IPBlock): invalid object doesn't have additional properties
[kube] 2020/12/16 16:47:32 Starting delete for "tidb-operator:kube-scheduler" ClusterRoleBinding
[kube] 2020/12/16 16:47:32 warning: failed to load schema: SchemaError(io.k8s.api.networking.v1.IPBlock): invalid object doesn't have additional properties
[kube] 2020/12/16 16:47:32 Starting delete for "tidb-operator:tidb-scheduler" ClusterRoleBinding
[kube] 2020/12/16 16:47:32 warning: failed to load schema: SchemaError(io.k8s.api.networking.v1.IPBlock): invalid object doesn't have additional properties
[kube] 2020/12/16 16:47:32 Starting delete for "tidb-operator:volume-scheduler" ClusterRoleBinding
[kube] 2020/12/16 16:47:32 warning: failed to load schema: SchemaError(io.k8s.api.networking.v1.IPBlock): invalid object doesn't have additional properties
[kube] 2020/12/16 16:47:32 Starting delete for "tidb-operator:tidb-controller-manager" ClusterRole
[kube] 2020/12/16 16:47:32 warning: failed to load schema: SchemaError(io.k8s.api.networking.v1.IPBlock): invalid object doesn't have additional properties
[kube] 2020/12/16 16:47:32 Starting delete for "tidb-operator:tidb-scheduler" ClusterRole
[kube] 2020/12/16 16:47:32 warning: failed to load schema: SchemaError(io.k8s.api.networking.v1.IPBlock): invalid object doesn't have additional properties
[kube] 2020/12/16 16:47:32 Starting delete for "tidb-controller-manager" ServiceAccount
[kube] 2020/12/16 16:47:32 warning: failed to load schema: SchemaError(io.k8s.api.networking.v1.IPBlock): invalid object doesn't have additional properties
[kube] 2020/12/16 16:47:32 Starting delete for "tidb-scheduler" ServiceAccount
[kube] 2020/12/16 16:47:32 warning: failed to load schema: SchemaError(io.k8s.api.networking.v1.IPBlock): invalid object doesn't have additional properties
[kube] 2020/12/16 16:47:33 Starting delete for "tidb-scheduler-policy" ConfigMap
[tiller] 2020/12/16 16:47:33 executing 0 post-delete hooks for tidb-operator
[tiller] 2020/12/16 16:47:33 hooks complete for post-delete tidb-operator
[tiller] 2020/12/16 16:47:33 purge requested for tidb-operator
[storage] 2020/12/16 16:47:33 deleting release "tidb-operator.v1"
[storage] 2020/12/16 16:48:02 listing all releases with filter
[storage] 2020/12/16 16:48:23 listing all releases with filter

And I found this issue:
helm/helm#3889
Fixed in helm v2.11:
helm/helm#4420