Top 2 kubernetes-certification open source projects

CNCF CKAD prep material and resources

(deal with K8s cluster certificate expired) K8s 集群证书过期处理，更新 kubeadm 生成的证书有效期为 10 年。1.15.x 以上版本可直接 kubeadm alpha certs renew <cert_name> 更新