k8s1.20.6用kubeadm安装的3master+3node证书续期
失败翻车记录
一、查看k8s中所有证书的到期时间:
# kubeadm certs check-expiration
[check-expiration] Reading configuration from the cluster...
[check-expiration] FYI: You can look at this config file with 'kubectl -n kube-