[root@localhost html]# yum install docker-io
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: centos.ustc.edu.cn
* extras: centos.ustc.edu.cn
* updates: centos.ustc.edu.cn
运行后，
事务概要
========================================
安装 1 软件包 (+ 4 依赖软件包)
升级 2 软件包 (+14 依赖软件包)
总计：22 M
总下载量：11 M
Is this ok [y/d/N]: y
Downloading packages:
(1/5): docker-selinux-1.10.3-46.el7.centos.10.x86_64.rpm | 78
(2/5): docker-common-1.10.3-46.el7.centos.10.x86_64.rpm | 61
(3/5): oci-systemd-hook-0.1.4-4.git41491a3.el7.x86_64.rpm | 27
(4/5): oci-register-machine-0-1.7.git31bbcd2.el7.x86_64.rpm | 929
(5/5): docker-1.10.3-46.el7.centos.10.x86_64.rpm | 9.5
----------------------------------------------------------------------------------------------------------------------------------------------------------
总计 656 kB/s | 11
Running transaction check
Running transaction test
Transaction check error:
file /usr/lib/systemd/system/blk-availability.service from install of device-mapper-7:1.02.107-5.el7_2.5.x86_64 conflicts with file from package lvm2-7:6_64
file /usr/sbin/blkdeactivate from install of device-mapper-7:1.02.107-5.el7_2.5.x86_64 conflicts with file from package lvm2-7:2.02.105-14.el7.x86_64
file /usr/share/man/man8/blkdeactivate.8.gz from install of device-mapper-7:1.02.107-5.el7_2.5.x86_64 conflicts with file from package lvm2-7:2.02.105-1
错误概要
-------------
运行命令 yum install libdevmapper* -y
先将device-mapper等依赖事先安装结束，再动手安装docker就没有问题了。
安装后，启动service docker start，运行docker info即可查看docker是否安装成功。
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