从压缩包下载安装

1、下载Docker 安装包

在Docker官网下载所需要的Docker版本

https://download.docker.com/linux/static/stable/x86_64/

2、安装

  1. // 解压安装包
  2. tar -xvf docker-20.10.8.tgz
  3. // 将文件移动到安装目录
  4. cp docker/* /usr/bin/

3、修改docker.service

  1. // 将docker注册为服务
  2. vim /etc/systemd/system/docker.service
  1. [Unit]
  2. Description=Docker Application Container Engine
  3. Documentation=https://docs.docker.com
  4. After=network-online.target firewalld.service
  5. Wants=network-online.target
  7. [Service]
  8. Type=notify
  10. # the default is not to use systemd for cgroups because the delegate issues still
  11. # exists and systemd currently does not support the cgroup feature set required
  12. # for containers run by docker
  13. ExecStart=/usr/bin/dockerd
  14. ExecReload=/bin/kill -s HUP $MAINPID
  16. # Having non-zero Limit*s causes performance problems due to accounting overhead
  17. # in the kernel. We recommend using cgroups to do container-local accounting.
  18. LimitNOFILE=infinity
  19. LimitNPROC=infinity
  20. LimitCORE=infinity
  22. # Uncomment TasksMax if your systemd version supports it.
  23. # Only systemd 226 and above support this version.
  24. #TasksMax=infinity
  25. TimeoutStartSec=0
  27. # set delegate yes so that systemd does not reset the cgroups of docker containers
  28. Delegate=yes
  30. # kill only the docker process, not all processes in the cgroup
  31. KillMode=process
  33. # restart the docker process if it exits prematurely
  34. Restart=on-failure
  35. StartLimitBurst=3
  36. StartLimitInterval=60s
  38. [Install]
  39. WantedBy=multi-user.target

4、启动

  1. #添加文件权限并启动docker
  2. chmod +x /etc/systemd/system/docker.service 
  3. #重载配置文件
  4. systemctl daemon-reload 
  5. #启动Docker
  6. systemctl start docker 
  7. #设置开机自启
  8. systemctl enable docker.service

5、验证

  1. #查看Docker状态
  2. systemctl status docker 
  3. #查看Docker版本
  4. docker -v
  5. #下载hello-world镜像
  6. docker pull hello-world

从rpm包下载安装

方式一：从官网下载Docker离线安装包

Linux版本下载地址：https://download.docker.com/linux/centos/7/x86_64/stable/Packages/ Windows版本下载地址：https://download.docker.com/win/static/stable/x86_64/ 根据自己的系统版本下载下面的安装包，查看云主机内核版本 
  1. uname -r

Docker离线安装 - 图1

根据内核版本，下载Docker离线安装包

Docker离线安装 - 图2

方式二：使用yum下载Docker离线安装包

添加docker repo 
  1. yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
  1. yumdownloader --resolve --destdir /home/yum/docker-ce docker-ce

安装上序下载的rpm包

  1. rpm -ivh *.rpm

安装完成之后，检测是否安装成功，查看Docker版本

  1. docker --version