centos7安装docker

1、查看内核版本,Docker 要求 CentOS 系统的内核版本高于 3.10,否则就升级内核

[root@localhost ~]# uname -r

3.10.0-862.el7.x86_64

2、确保yum包更新到最新

[root@localhost ~]# yum update

3、安装依赖

[root@localhost ~]# yum install -y yum-utils device-mapper-persistent-data lvm2

4、设置yum源

[root@localhost ~]# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

Loaded plugins: fastestmirror

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

5、安装docker

[root@localhost ~]# yum install docker-ce

6、启动docker

[root@localhost ~]# systemctl start docker

7、加入开机启动项

[root@localhost ~]# systemctl enable docker

Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.

8、验证docker是否安装成功

[root@localhost ~]# systemctl enable docker

Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.

[root@localhost ~]# docker version

Client:

Version:      18.03.1-ce

API version:  1.37

Go version:  go1.9.5

Git commit:  9ee9f40

Built:        Thu Apr 26 07:20:16 2018

OS/Arch:      linux/amd64

Experimental: false

Orchestrator: swarm

Server:

Engine:

  Version:      18.03.1-ce

  API version:  1.37 (minimum version 1.12)

  Go version:  go1.9.5

  Git commit:  9ee9f40

  Built:        Thu Apr 26 07:23:58 2018

  OS/Arch:      linux/amd64

  Experimental: false

[root@localhost ~]#