需要至少2台ubuntu，1个master-node，1-N个worker-node
配置master节点
#!/bin/bash# user could update hostnameexport hostname=master-node# k8s version usedexport kube_version=1.17.0-00# install curlsudo apt-get updatesudo apt-get install -y curl# add kubenetes repositorycurl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key addsudo apt-add-repository "deb http://apt.kubernetes.io/ kubernetes-xenial main"# install dockerif ! [ -x "$(command -v docker)" ]; then echo "Docker installing ..." curl -sSL https://get.docker.com/ | shelse echo "docker has already been installed"fi# set user into docker group, need logout to take effect#sudo usermod -aG docker tas# install kubeadm kubelet kubectlsudo apt-get install -y kubelet=$kube_version kubeadm=$kube_version kubectl=$kube_version#turn off swapsudo swapoff -a# set hostname and add line to hosts filesudo hostnamectl set-hostname $hostnamesudo sed -i "1i127.0.1.1 ${hostname}" /etc/hosts# For master-nodesudo kubeadm init --pod-network-cidr=10.244.0.0/16mkdir -p $HOME/.kubesudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/configsudo chown $(id -u):$(id -g) $HOME/.kube/config#Deploy Pod Network to Clustersudo kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml执行上面的脚本，成功后会返回
kubeadm join 10.97.170.70:6443 --token icorqs.u4gbnyz7p11vkqz3 --discovery-token-ca-cert-hash sha256:cbbb51f01046558f6c7f2d6b5dee63a05fb14c35aae9cd9766191f10644abbf5 配置worker节点
#!/bin/bash# user could update hostnameexport hostname=worker-node1# k8s version usedexport kube_version=1.17.0-00# install curlsudo apt-get updatesudo apt-get install -y curl# add kubenetes repositorycurl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key addsudo apt-add-repository "deb http://apt.kubernetes.io/ kubernetes-xenial main"# install dockerif ! [ -x "$(command -v docker)" ]; then echo "Docker installing ..." curl -sSL https://get.docker.com/ | shelse echo "docker has already been installed"fi# set user into docker group, need logout to take effect#sudo usermod -aG docker tas# install kubeadm kubelet kubectlsudo apt-get install -y kubelet=$kube_version kubeadm=$kube_version kubectl=$kube_version#turn off swapsudo swapoff -a# set hostname and add line to hosts filesudo hostnamectl set-hostname $hostnamesudo sed -i "1i127.0.1.1 ${hostname}" /etc/hosts# copy the output from master node kubeadm initsudo kubeadm join 10.97.170.70:6443 --token icorqs.u4gbnyz7p11vkqz3 --discovery-token-ca-cert-hash sha256:cbbb51f01046558f6c7f2d6b5dee63a05fb14c35aae9cd9766191f10644abbf5修改最后一行，用第一步的返回替换，然后执行脚本
卸载脚本
#!/bin/bashecho "reset kubeadm"sudo kubeadm resetwhile true; do echo "Do you want to uninstall kubernetes software?" read -p "(y/n) " yn case $yn in [Yy]* ) uninstall_kube=yes; break;; [Nn]* ) break;; * ) echo "Please answer yes or no.";; esacdoneif [ "$uninstall_kube" = "yes" ]; then echo "##########################################################################" echo "uninstall k8s components" echo "##########################################################################" sudo apt-get purge kubeadm kubectl kubelet kubernetes-cni kube* sudo apt-get autoremove sudo rm -rf ~/.kubefiwhile true; do echo "Do you want to uninstall docker?" read -p "(y/n) " yn case $yn in [Yy]* ) uninstall_docker=yes; break;; [Nn]* ) break;; * ) echo "Please answer yes or no.";; esacdoneif [ "$uninstall_docker" = "yes" ]; then echo "##########################################################################" echo "uninstall k8s components" echo "##########################################################################" sudo apt-get purge -y docker-engine docker docker.io docker-ce sudo apt-get autoremove -y --purge docker-engine docker docker.io docker-ce sudo rm -rf /var/lib/docker /etc/docker sudo groupdel docker sudo rm -rf /var/run/docker.sockfi