docker虚拟化平台构建
从1.13版本以后的docker软件分为连个版本：企业版、社区版，在企业中推荐社区版本。
构建docker平台环境，系统选择centos7.x，推荐linux内核3.10
docker平台安装方法如下：
安装第三方epel-relase扩展源
[root@localhost ~]# yum install epel-release -y
安装docker软件包
[root@localhost ~]# yum install docker -y
查看docker软件包是否部署
[root@localhost ~]# yum list docker
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
- base: mirrors.aliyun.com
- epel: mirrors.tuna.tsinghua.edu.cn
- extras: mirrors.aliyun.com
- updates: mirrors.aliyun.com
已安装的软件包
docker.x86_64 2:1.13.1-103.git7f2769b.el7.centos
[root@localhost ~]# rpm -qa |grep docker
docker-client-1.13.1-103.git7f2769b.el7.centos.x86_64
docker-1.13.1-103.git7f2769b.el7.centos.x86_64
docker-common-1.13.1-103.git7f2769b.el7.centos.x86_64
启动docker服务
systemctl start docker.service
查看docker版本信息，只要看到client和server信息，就说明docker启动正常。
[root@localhost ~]# docker version
Client:
Version: 1.13.1
API version: 1.26
Package version: docker-1.13.1-103.git7f2769b.el7.centos.x86_64
Go version: go1.10.3
Git commit: 7f2769b/1.13.1
Built: Sun Sep 15 14:06:47 2019
OS/Arch: linux/amd64
Server:
Version: 1.13.1
API version: 1.26 (minimum version 1.12)
Package version: docker-1.13.1-103.git7f2769b.el7.centos.x86_64
Go version: go1.10.3
Git commit: 7f2769b/1.13.1
Built: Sun Sep 15 14:06:47 2019
OS/Arch: linux/amd64
Experimental: false