问题：
]$ service network restart
Restarting network (via systemctl): Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.
解决方法：
1、检查
2、service network restart
3、运行下列命令：
chkconfig network off
chkconfig network on
service NetworkManager stop
service NetworkManager start