1,安装docker

[hadoop@Slave2 Desktop]$ sudo yum install docker

2,报错如下:

Total                                              298 kB/s |  11 MB  00:36     
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 lvm2-7:2.02.105-14.el7.x86_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 lvm2-7:2.02.105-14.el7.x86_64

Error Summary

解决办法:执行下面的命令即可

[hadoop@Slave2 Desktop]$ yum install lvm2

3,再次执行:

[hadoop@Slave2 Desktop]$ sudo yum install docker