说明:系统版本 CentOS 6.9 X64
安装docker
配置Fedora EPEL 源
由于CentOS 6.x与7.x安装docker是有一些不同的，CentOS 6.x上docker的安装包叫docker-io，来源于Fedora epel库，这个仓库维护了大量的没有包含在发行版中的软件，所以先要安装EPEL，而CentOS 7.x的docker直接包含在官方镜像源的Extras仓库（CentOS-Base.repo下的[extras]节enable=1启用）
yum -y install http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
安装docker
安装 docker-io
yum install -y docker-io
启动docker
启动docker
service docker start
查看docker版本
查看版本
docker version
Containers: 0
Images: 0
Storage Driver: devicemapper
Pool Name: docker-8:2-5244104-pool
Pool Blocksize: 65.54 kB
Backing Filesystem: extfs
Data file: /dev/loop0
Metadata file: /dev/loop1
Data Space Used: 305.7 MB
Data Space Total: 107.4 GB
Data Space Available: 91.09 GB
Metadata Space Used: 17.51 MB
Metadata Space Total: 2.147 GB
Metadata Space Available: 2.13 GB
Udev Sync Supported: true
Deferred Removal Enabled: false
Data loop file: /var/lib/docker/devicemapper/devicemapper/data
Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata
Library Version: 1.02.117-RHEL6 (2016-12-13)
Execution Driver: native-0.2
Logging Driver: json-file
Kernel Version: 4.4.161-1.el6.elrepo.x86_64
Operating System:
CPUs: 4
Total Memory: 3.859 GiB
Name: cyb
ID: H3CC:IUXK:L7GB:CESB:WSYX:NOGY:THOZ:DAYQ:XE5X:BPP4:OBOP:Y3AW
安装完成
如显示如上信息表示安装完成