kubeadm证书到期

重新生成证书重新生成对应的配置文件重启docker 和 kubelet

kubeadm alpha certs check-expiration

cp -r  /etc/kubernetes/ /opt

kubeadm alpha certs renew all

rm -rf  /etc/kubernetes/*.conf

kubeadm init phase kubeconfig all

cp /etc/kubernetes/admin.conf ~/.kube/config

systemctl restart kubelet

kubectl get pods -n defalt -o wide