1 重置
swapoff -a && kubeadm reset && systemctl daemon-reload && systemctl restart kubelet && iptables -F && iptables -t nat -F && iptables -t mangle -F && iptables -X
2 加入,找到自己的join語句
kubeadm join 172.29.251.182:6443 --token lozd7a.fi4ow66z5sqkoprp --discovery-token-ca-cert-hash sha256:24e583379140bdd765f3afc31783146a07420d5d6cbaf3df63d2f71a7cd7ac67