如何使用kubeadm管理证书?
kubeadm管理证书 在管理证书之前,你需要了解kubernetes如何使用PKI证书的相关知识: 官方文档 检查证书到期时间 check-expiration 可用于检查证书过期时间: kubeadm alpha certs check-expiration 输出如下内容; CERTIFICATE EXPIRES RESIDUAL TIME EXTERNALLY MANAGED admin.conf Oct 06, 2020 03:56 UTC 364d no apiserver Oct 06, 2020 10:41 UTC 364d no apiserver-etcd-client Oct 06, 2020 03:55 UTC 364d no apiserver-kubelet-client Oct 06, 2020 03:55 UTC 364d no controller-manager.conf Oct 06, 2020 03:56 UTC 364d no etcd-healthcheck-client Oct 02, 2020 12:14 UTC 361d no etcd-peer Oct 02, 2020 12:14 UTC 361d no etcd-server Oct 02, 2020 12:14 UTC 361d no front-proxy-client