两台服务器提前设置hostname及配置hosts

192.168.18.134 k8s-master01
192.168.18.137 k8s-node01

系统环境 Ubuntu20
    设置时间同步服务
        未设置
    设置防火墙关闭
        sudo ufw disable && sudo ufw status
    关闭Swap
        sudo swapoff -a
    更新索引
        sudo apt update
        sudo apt install apt-transport-https ca-certificates curl gnupg-agent software-properties-common
    安装docker
        添加Docker官方的GPG证书，以验证程序包签名
            curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
        为apt添加稳定版本的Docker-CE仓库
            sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
        更新apt索引后安装docker-ce
            sudo apt update
            sudo apt install docker-ce docker-ce-cli containerd.io
        配置Docker。编辑/etc/docker/daemon.json
            新建/etc/docker/daemon.json文件
            {
                "exec-opts":["native.cgroupdriver=systemd"],
                "log-driver":"json-file",
                "log-opts":{
                    "max-size":"100m"
                },
                "storage-driver":"overlay2"
            }
        启动Docker服务，并设置服务可随系统引导启动
            sudo systemctl daemon-reload
            sudo systemctl start docker.service
            sudo systemctl enable docker.service
        
          
    安装Kubernetes
        切换root
            更新apt索引信息后安装必要的程序包，切换root
                apt update && apt install -y apt-transport-https
            添加Kubernetes官方程序密钥
                curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | apt-key add -
        在配置文件/etc/apt/sources.list.d/kubernetes.list中添加如下内容，为apt添加Kubernetes程序包仓库
            deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main
        更新程序包索引并安装程序包
            sudo apt update
            sudo apt install -y kubelet kubeadm kubectl
        
    初始化控制平面
        sudo kubeadm init --apiserver-advertise-address=192.168.18.134 --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.23.6 --service-cidr=10.1.0.0/16 --pod-network-cidr=10.244.0.0/16
        
        To start using your cluster, you need to run the following as a regular user:

          mkdir -p $HOME/.kube
          sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
          sudo chown $(id -u):$(id -g) $HOME/.kube/config

        Alternatively, if you are the root user, you can run:

        sudo export KUBECONFIG=/etc/kubernetes/admin.conf

        You should now deploy a pod network to the cluster.
        Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
          https://kubernetes.io/docs/concepts/cluster-administration/addons/

        Then you can join any number of worker nodes by running the following on each as root:

        kubeadm join 192.168.18.134:6443 --token 72gnv3.b9ybgdnf24z8mce9 --discovery-token-ca-cert-hash sha256:67d547fd7d5262e26b73e09409af14be1994abc4e9cb2407366e31c8f09fe880
    
    部署Flannel网络插件
        kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

验证：

root@k8s-master01:~# kubectl get node
NAME           STATUS     ROLES                  AGE   VERSION
k8s-master01   NotReady   control-plane,master   23h   v1.23.6

节点上重复执行上述除init以上的步骤，然后执行join：

kubeadm join 192.168.18.134:6443 --token 72gnv3.b9ybgdnf24z8mce9 --discovery-token-ca-cert-hash sha256:67d547fd7d5262e26b73e09409af14be1994abc4e9cb2407366e31c8f09fe880

验证：

root@k8s-master01:/etc# kubectl get node
NAME           STATUS     ROLES                  AGE   VERSION
k8s-master01   NotReady   control-plane,master   23h   v1.23.6
k8s-node01     Ready      <none>                 23h   v1.23.6