join 前检查

    join 命令:

    1. kubeadm join ip:port --token xxx --discovery-token-ca-cert-hash sha256xxx...
    • discovery-token-ca-cert-hash, node 验证 master
    • token: master 验证 node

    手动输出:

    1. openssl x509 -in /etc/kubernetes/pki/ca.crt -noout -pubkey | openssl rsa -pubin -outform DER 2>/dev/null | sha256sum | cut -d' ' -f1