进入pod时显示无权限，按照其他人说的加授权也是失败

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文档版本
版本是v1.14

现象描述
进入pod时显示无权限，按照其他人说的加授权也是失败
root@zhangjun-k8s01 work]# kubectl create clusterrolebinding kube-apiserver:kubelet-apis --clusterrole=system:kubelet-api-admin --user kubernetes
Error from server (AlreadyExists): clusterrolebindings.rbac.authorization.k8s.io "kube-apiserver:kubelet-apis" already exists
[root@zhangjun-k8s01 work]# kubectl exec dnsutils-ds-nzj9m nslookup kubernetes
error: unable to upgrade connection: Forbidden (user=kubernetes, verb=create, resource=nodes, subresource=proxy)