Failed to start LSB: Bring up/down networking.

systemctl restart network出现错误：

[root@aims-node2 ~]# systemctl status network

?.network.service - LSB: Bring up/down networking

   Loaded: loaded (/etc/rc.d/init.d/network; bad; vendor preset: disabled)

   Active: failed (Result: exit-code) since Thu 2017-10-26 17:16:42 CST; 22min ago

     Docs: man:systemd-sysv-generator(8)

  Process: 9649 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)

Oct 26 17:16:42 aims-node2 network[9649]: RTNETLINK answers: File exists

Oct 26 17:16:42 aims-node2 network[9649]: RTNETLINK answers: File exists

Oct 26 17:16:42 aims-node2 network[9649]: RTNETLINK answers: File exists

Oct 26 17:16:42 aims-node2 network[9649]: RTNETLINK answers: File exists

Oct 26 17:16:42 aims-node2 network[9649]: RTNETLINK answers: File exists

Oct 26 17:16:42 aims-node2 network[9649]: RTNETLINK answers: File exists

Oct 26 17:16:42 aims-node2 systemd[1]: network.service: control process exited, code=exited status=1

Oct 26 17:16:42 aims-node2 systemd[1]: Failed to start LSB: Bring up/down networking.

Oct 26 17:16:42 aims-node2 systemd[1]: Unit network.service entered failed state.
Oct 26 17:16:42 aims-node2 systemd[1]: network.service failed.

解决：

systemctl stop NetworkManager

重启网卡

systemctl start network