kubernetes secret 和 serviceaccount删除

背景

今天通过配置创建了一个serviceaccounts和secret，后面由于某种原因想再次创建发现已存在一个serviceaccounts和rolebindings.rbac.authorization.k8s.io，如下：

[root@master mysql-operator-master]# cat <<EOF | kubectl create -f -
> apiVersion: v1
> kind: ServiceAccount
> metadata:
>   name: mysql-agent
>   namespace: mysql-operator
> ---
> kind: RoleBinding
> apiVersion: rbac.authorization.k8s.io/v1beta1
> metadata:
>   name: mysql-agent
>   namespace: mysql-operator
> roleRef:
>   apiGroup: rbac.authorization.k8s.io
>   kind: ClusterRole
>   name: mysql-agent
> subjects:
> - kind: ServiceAccount
>   name: mysql-agent
>   namespace: mysql-operator
> EOF
Error from server (AlreadyExists): error when creating "STDIN": serviceaccounts "mysql-agent" already exists
Error from server (AlreadyExists): error when creating "STDIN": rolebindings.rbac.authorization.k8s.io "mysql-agent" already exists

解决过程

于是删除这两个东西，删不掉，如下：

[root@master mysql-operator-master]# kubectl get sa
NAME          SECRETS   AGE
default       1         33d
mysql-agent   1         15m
[root@master mysql-operator-master]# kubectl delete secret mysql-agent
Error from server (NotFound): secrets "mysql-agent" not found
[root@master mysql-operator-master]# kubectl get sa
NAME          SECRETS   AGE
default       1         33d
mysql-agent   1         16m
[root@master mysql-operator-master]#

尝试换了一个命令，提示删掉了，但是查看依然存在

[root@master mysql-operator-master]# kubectl delete serviceaccount -n mysql-operator mysql-agent
serviceaccount "mysql-agent" deleted
You have new mail in /var/spool/mail/root
[root@master mysql-operator-master]# kubectl get sa
NAME          SECRETS   AGE
default       1         33d
mysql-agent   1         25m

再次删除sa，这次不指定ns，删除成功

[root@master mysql-operator-master]# kubectl delete serviceaccounts mysql-agent
serviceaccount "mysql-agent" deleted
[root@master mysql-operator-master]# 
[root@master mysql-operator-master]# kubectl get serviceaccounts
NAME      SECRETS   AGE
default   1         33d
[root@master mysql-operator-master]#