CentOS 安装docker

一、必要条件：64位且内核版本在3.10以上，故选择CentOS 7.2.1511

二、服务器安装

1、到http://mirrors.aliyun.com/centos/7/isos/x86_64/CentOS-7-x86_64-DVD-1511.iso 下载Centos

2、修改yum源

A、wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

B、yum makecache

3、升级到最新 sudo yum update

三、安装docker

1、增加yum源

$ sudo tee /etc/yum.repos.d/docker.repo <<-'EOF'
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/7/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg

2、安装docker


$ sudo yum install docker-engine

3、启动docker服务

$ sudo systemctl enable docker.service

4、启动docker守护

$ sudo systemctl start docker

5、验证

$ sudo docker run --rm hello-world

 Unable to find image 'hello-world:latest' locally
 latest: Pulling from library/hello-world
 c04b14da8d14: Pull complete
 Digest: sha256:0256e8a36e2070f7bf2d0b0763dbabdd67798512411de4cdcf9431a1feb60fd9
 Status: Downloaded newer image for hello-world:latest

 Hello from Docker!
 This message shows that your installation appears to be working correctly.

 To generate this message,Docker took the following steps:
  1. The Docker client contacted the Docker daemon.
  2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
  3. The Docker daemon created a new container from that image which runs the
     executable that produces the output you are currently reading.
  4. The Docker daemon streamed that output to the Docker client,which sent it
     to your terminal.

 To try something more ambitious,you can run an Ubuntu container with:
  $ docker run -it ubuntu bash

 Share images,automate workflows,and more with a free Docker Hub account:
  https://hub.docker.com

 For more examples and ideas,visit:
  https://docs.docker.com/engine/userguide/

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