docker 错误 A dependency job for docker.service failed. See ‘journalctl -xe‘ for details

[root@localhost laradock]# systemctl enable docker  && systemctl start docker
A dependency job for docker.service Failed. See 'journalctl -xe' for details.

安装完毕后发现无法启动 docker 服务 按照系统提示 输入 journalctl -xe

[root@localhost laradock]# journalctl -xe
1月 24 02:25:45 localhost.localdomain yum[18753]: 2:postfix-2.10.1-7.el7.x86_64: 100
1月 24 02:25:45 localhost.localdomain yum[18753]: fontconfig-2.13.0-4.3.el7.x86_64: 100
1月 24 02:26:12 localhost.localdomain polkitd[6691]: Registered Authentication Agent for unix-process:18768:232871247 (system bus na
1月 24 02:26:12 localhost.localdomain systemd[1]: Reloading.
1月 24 02:26:12 localhost.localdomain polkitd[6691]: Unregistered Authentication Agent for unix-process:18768:232871247 (system bus 
1月 24 02:26:12 localhost.localdomain polkitd[6691]: Registered Authentication Agent for unix-process:18787:232871256 (system bus na
1月 24 02:26:12 localhost.localdomain systemd[1]: Starting Docker Socket for the API.
-- Subject: Unit docker.socket has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit docker.socket has begun starting up.
1月 24 02:26:12 localhost.localdomain systemd[18793]: Failed to chown socket at step GROUP: No such process
1月 24 02:26:12 localhost.localdomain systemd[1]: docker.socket control process exited,code=exited status=216
1月 24 02:26:12 localhost.localdomain systemd[1]: Failed to listen on Docker Socket for the API.
-- Subject: Unit docker.socket has Failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit docker.socket has Failed.
-- 
-- The result is Failed.
1月 24 02:26:12 localhost.localdomain systemd[1]: Dependency Failed for Docker Application Container Engine.
-- Subject: Unit docker.service has Failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit docker.service has Failed.
-- 
-- The result is dependency.
1月 24 02:26:12 localhost.localdomain systemd[1]: Job docker.service/start Failed with result 'dependency'.
1月 24 02:26:12 localhost.localdomain systemd[1]: Unit docker.socket entered Failed state.
1月 24 02:26:12 localhost.localdomain polkitd[6691]: Unregistered Authentication Agent for unix-process:18787:232871256 (system bus 

给 系统添加一个docker组

[root@localhost laradock]# groupadd docker
groupadd：无法打开 /etc/group

做过基线配置 没有权限 使用 chattr -i 增加一下权限

[root@localhost laradock]# chattr -i /etc/group
[root@localhost laradock]# groupadd docker
[root@localhost laradock]# systemctl enable docker  && systemctl start docker

完成！

如果依然报错 不能启动docker 则重新安装docker

执行命令：

yum remove docker-ce -y && yum install docker-ce -y && service docker start

即可启动完成