k8s v1.19 证书过期解决方案
1.备份
cp -r /etc/kubernetes /etc/kubernetes_bak
cp -r $HOME/.kube/config $HOME/.kube/config_bak
2.在master节点上更新证书
kubeadm alpha certs renew all
3.更新$HOME/.kube/config文件
cp -r /etc/kubernetes/admin.conf $HOME/.kube/config
4.重启容器
docker ps |grep -E 'k8s_kube-apiserver|k8s_kube-controller-manager|k8s_kube-scheduler|k8s_etcd_etcd' | awk -F ' ' '{print $1}' |xargs docker restart