rke起k8s集群（单节点）入门详细教程

rke起k8s集群（单节点）

环境：CentOS7.9，

1. 首先安装docker

   //更新yum
   yum clean all
   yum repolist
   
   //安装docker
   //创建文件夹用于存放资源包
   mkdir pkg
   
   //开始下载docker，一共安装三个文件docker-ce、docker-ce-cli、containerd.io
   wget https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/7.9/x86_64/stable/Packages/docker-ce-19.03.4-3.el7.x86_64.rpm
   wget https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/7.9/x86_64/stable/Packages/docker-ce-cli-19.03.4-3.el7.x86_64.rpm
   yum install *.rpm
   //会提示报错
   错误：软件包：3:docker-ce-19.03.4-3.el7.x86_64 (/docker-ce-19.03.4-3.el7.x86_64)
             需要：containerd.io >= 1.2.2-3
   //按照要求下载container版本
   wget https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/7.9/x86_64/stable/Packages/containerd.io-1.2.4-3.1.el7.x86_64.rpm
   yum install *.rpm
   
   

   • 检测是否安装成功

     docker version
     systemctl start docker
     systemctl status docker
     

     配置docker镜像源

     vi  /etc/docker/daemon.json