如何在Debian系统上安装Kubernetes

在Debian系统上安装Kubernetes的步骤如下：

1. 更新系统：sudo apt update && sudo apt upgrade -y
2. 安装Docker：
   • sudo apt install apt-transport-https ca-certificates curl
   • curl -fsSL https://download.docker.com/linux/debian/gpg | sudo apt-key add -
   • echo "deb [arch=amd64] https://download.docker.com/linux/debian $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list
   • sudo apt update
   • sudo apt install -y docker-ce docker-ce-cli containerd.io
   • sudo systemctl start docker && sudo systemctl enable docker
3. 安装containerd：
   • sudo apt install -y containerd
   • sudo mkdir -p /etc/containerd
   • sudo tee /etc/containerd/config.toml <<EOF [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options] Path = "/usr/local/bin/runc" RuntimeArgs = [] EOF
   • sudo systemctl daemon-reload && sudo systemctl enable --now containerd
4. 添加Kubernetes apt仓库：
   • curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
   • echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list
   • sudo apt update
5. 安装Kubernetes组件：
   • sudo apt install -y kubelet kubeadm kubectl
   • sudo apt-mark hold kubelet kubeadm kubectl
6. 初始化主节点：sudo kubeadm init --pod-network-cidr=10.244.0.0/16，记录初始化命令。
7. 配置kubectl：
   • mkdir -p $HOME/.kube
   • sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
   • sudo chown $(id -u):$(id -g) $HOME/.kube/config
8. 安装网络插件：以Flannel为例，kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
9. 加入工作节点：在工作节点上执行初始化时生成的sudo kubeadm join命令。
10. 验证安装：在主节点上运行kubectl cluster-info和kubectl get nodes。