• 安装docker
• k8s相关资源/工具安装
• 参考

安装docker

参考docker官方文档安装

1. 设置存储库

    $ sudo apt-get update
   
    $ sudo apt-get install \
        ca-certificates \
        curl \
        gnupg \
        lsb-release
   
    $ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
   
    $ echo \
    "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
    $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

2. 安装 Docker 引擎

    $ sudo apt-get update
    $ sudo apt-get install docker-ce docker-ce-cli containerd.io

3. 验证 Docker 是否安装成功

    $ sudo docker run hello-world

k8s相关资源/工具安装

参考kubernetes官方文档安装,但需要注意的是部分镜像因为网络原因无法拉取到，所以需要替换这部分镜像

1. 安装 kubeadm、kubelet、kubectl

    $ sudo apt-get update
    $ sudo apt-get install -y apt-transport-https ca-certificates curl
   
    $ cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
    br_netfilter
    EOF
   
    $ cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
    net.bridge.bridge-nf-call-ip6tables = 1
    net.bridge.bridge-nf-call-iptables = 1
    EOF
   
    $ sudo curl -s https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | sudo apt-key add -
   
    $ sudo tee /etc/apt/sources.list.d/kubernetes.list <<-'EOF'
    deb https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial main
    EOF
   
    $ sudo apt-get update
    $ sudo apt-get install -y kubelet kubeadm kubectl
    $ sudo apt-mark hold kubelet kubeadm kubectl

2. 配置 cgroup 驱动程序

    $ sudo vim /etc/docker/daemon.json
   
    {
        "exec-opts": ["native.cgroupdriver=systemd"]
    }
   
    $ sudo systemctl daemon-reload
    $ sudo systemctl restart docker

3. 使用 kubeadm 创建集群

    $ sudo kubeadm init --image-repository=registry.aliyuncs.com/google_containers --pod-network-cidr=10.244.0.0/16

   成功后显示如下：

    Your Kubernetes control-plane has initialized successfully!
   
    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:
   
    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 ip:port --token xxx \
        --discovery-token-ca-cert-hash sha256:xxx

4. 复制 kubeconfig 并验证 k8s 集群

    $ sudo cp -i /etc/kubernetes/admin.conf kubeconfig
    $ sudo chmod 777 kubeconfig
    $ export KUBECONFIG=kubeconfig 
    $ kubectl  get ns

5. 安装网络插件 flannel

   项目地址：https://github.com/flannel-io/flannel

   yaml地址：https://raw.githubusercontent.com/flannel-io/flannel/master/Documentation/kube-flannel.yml

    $ kubeclt apply -f kube-flannel.yaml 

6. 控制平面节点隔离

    $ kubectl taint node <node_name> --all node-role.kubernetes.io/master-

参考

腾讯云安装kubernetes(ubuntu20.4)

阿里云ECS(Ubuntu)单节点Kubernetes部署——小白教程