转载:https://www.cnblogs.com/yufeng218/p/8370670.html
安装Docker
1、Docker 要求 CentOS 系统的内核版本高于 3.10,查看本页面的前提条件来验证你的CentOS 版本是否支持 Docker 。
通过 uname -r 命令查看你当前的内核版本
[root@10-13-4-243 ~]# uname -r
3.10.0-1062.9.1.el7.x86_64
2、使用 root
权限登录 CentOS。确保 yum 包更新到最新。
sudo yum update
3、卸载旧版本(如果有旧版本的话)
sudo yum remove docker docker-common docker-selinux docker-engine
4、安装需要的软件包, yum-util 提供yum-config-manager功能(yum配置管理),另外两个是devicemapper驱动依赖的
[root@10-13-4-243 ~]# sudo yum install -y yum-utils device-mapper-persistent-data lvm2
已加载插件:fastestmirror, langpacks, versionlock
Loading mirror speeds from cached hostfile
Excluding 1 update due to versionlock (use "yum versionlock status" to show it)
软件包 yum-utils-1.1.31-54.el7_8.noarch 已安装并且是最新版本
软件包 device-mapper-persistent-data-0.8.5-2.el7.x86_64 已安装并且是最新版本
软件包 7:lvm2-2.02.186-7.el7_8.2.x86_64 已安装并且是最新版本
无须任何处理
5、设置yum源
[root@10-13-4-243 ~]# sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
已加载插件:fastestmirror, langpacks, versionlock
adding repo from: https://download.docker.com/linux/centos/docker-ce.repo
grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo
可以换成配置阿里云镜像
[root@10-13-4-243 ~]# yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
已加载插件:fastestmirror, langpacks, versionlock
adding repo from: http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
grabbing file http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo
6、可以查看所有仓库中所有docker版本,并选择特定版本安装
yum list docker-ce --showduplicates | sort -r
7、安装docker
[root@10-13-4-243 ~]# sudo yum install docker-ce
8、启动并加入开机启动
[root@10-13-4-243 ~]# sudo systemctl start docker
[root@10-13-4-243 ~]# sudo systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
9、验证安装是否成功(有client和service两部分表示docker安装启动都成功了)
[root@10-13-4-243 ~]# docker version
Client: Docker Engine - Community
Version: 19.03.12
API version: 1.40
Go version: go1.13.10
Git commit: 48a66213fe
Built: Mon Jun 22 15:46:54 2020
OS/Arch: linux/amd64
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 19.03.12
API version: 1.40 (minimum version 1.12)
Go version: go1.13.10
Git commit: 48a66213fe
Built: Mon Jun 22 15:45:28 2020
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.2.13
GitCommit: 7ad184331fa3e55e52b890ea95e65ba581ae3429
runc:
Version: 1.0.0-rc10
GitCommit: dc9208a3303feef5b3839f4323d9beb36df0a9dd
docker-init:
Version: 0.18.0
GitCommit: fec3683