该kubernetes集群位于 1.21.2。也是kubelet1.21.2
kubelet --version
Kubernetes v1.21.2
kubeadm version
kubeadm version: &version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.2", GitCommit:"092fbfbf53427de67cac1e9fa54aaa09a28371d7", GitTreeState:"clean", BuildDate:"2021-06-16T12:57:56Z", GoVersion:"go1.16.5", Compiler:"gc", Platform:"linux/amd64"}
当我尝试“ kl get no”时，出现以下错误
kl get no
error: You must be logged in to the server (Unauthorized)
**Note: kl is alias of kubectl**
I checked my /var/lib/kubelet/pki/kubelet.crt and it was expired.
在 kubelet.crt 中，发行者如下
Subject: CN=aparapu@1591592441
Subject Public Key Info:
Public Key Algorithm: rsaEncryption
需要帮助来更新此 kubelet.crt。
kubernetes ×1