17、kubeadm部署的集群kubelet证书过期解决办法

# 生成新配置文件和证书
[root@master ~]# kubeadm init phase kubeconfig all
# failed to run Kubelet: unable to load bootstrap kubeconfig: stat /etc/kubernetes/bootstrap-kubelet.conf: no such file or directory 错误解决办法，将更新的证书复制更名
cd /etc/kubernetes
cp kubelet.conf bootstrap-kubelet.conf