学习来源
https://jimmysong.io/kubernetes-handbook/cloud-native/play-with-kubernetes.html
mac docker 安装
brew cask install docker
kubeadm join 192.168.0.18:6443 –token y2wiqt.vscygjzc9gpzyqa5 –discovery-token-ca-cert-hash sha256:ce35463df075ae437bfef5b7c62f34aabe68d9e1e51b8cc48ee05d1d6ba9b631