卸载旧版本

 sudo yum remove docker                   docker-client                   docker-client-latest                   docker-common                   docker-latest                   docker-latest-logrotate                   docker-logrotate                   docker-engine

下载docker的安装文件

连接：docker下载地址

例如：docker-18.06.3-ce.tgz

安装

• 上传安装包：/opt

• 解压：tar -zxvf docker-18.06.3-ce.tgz

• 将解压出来的docker文件复制到 /usr/bin/ 目录下:cp docker/* /usr/bin/

• 进入/etc/systemd/system/目录,并创建docker.service文件

  cd /etc/systemd/system/
  touch docker.service
  

• 打开docker.service文件,将以下内容复制到该文件:vi docker.service

  注意： --insecure-registry=192.168.101.6 此处改为你自己服务器ip

  [Unit]
  Description=Docker Application Container Engine
  Documentation=https://docs.docker.com
  After=network-online.target firewalld.service
  Wants=network-online.target
  
  [Service]
  Type=notify
  # the default is not to use systemd for cgroups because the delegate issues still
  # exists and systemd currently does not support the cgroup feature set required
  # for containers run by docker
  ExecStart=/usr/bin/dockerd --selinux-enabled=false --insecure-registry=192.168.101.6
  ExecReload=/bin/kill -s HUP $MAINPID
  # Having non-zero Limit*s causes performance problems due to accounting overhead
  # in the kernel. We recommend using cgroups to do container-local accounting.
  LimitNOFILE=infinity
  LimitNPROC=infinity
  LimitCORE=infinity
  # Uncomment TasksMax if your systemd version supports it.
  # Only systemd 226 and above support this version.
  #TasksMax=infinity
  TimeoutStartSec=0
  # set delegate yes so that systemd does not reset the cgroups of docker containers
  Delegate=yes
  # kill only the docker process, not all processes in the cgroup
  KillMode=process
  # restart the docker process if it exits prematurely
  Restart=on-failure
  StartLimitBurst=3
  StartLimitInterval=60s
  
  [Install]
  WantedBy=multi-user.target
  
  

• 给docker.service文件添加执行权限：chmod 777 /etc/systemd/system/docker.service

• 重新加载配置文件：systemctl daemon-reload

• 启动：

  #启动
  systemctl start docker
  #开机启动
  systemctl enable docker.service
  #查看状态
  systemctl status docker
  
  

添加镜像加速

阿里云镜像获取地址：https://cr.console.aliyun.com/cn-hangzhou/instances/mirrors，登陆后，左侧菜单选中镜像加速器就可以看到你的专属地址了：

# 编辑daemon.json
vi /etc/docker/daemon.json
#重启
service docker restart

daemon.json内容

{
  "registry-mirrors": ["你的镜像加速地址"]
}

CentOS 离线Docker 安装

原文：https://www.cnblogs.com/codetxj/p/14815366.html