CentOS7重启网络服务失败。

Question

环境：VirtualBox 5.8 CentOS7 1708
网卡：三张网卡分别为NAT，桥接，Host-Only

[root@node250 network-scripts]# 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 Mon 2018-03-12 15:19:58 CST; 2min 27s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 2999 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)

Mar 12 15:19:58 node250 network[2999]: RTNETLINK answers: File exists
Mar 12 15:19:58 node250 network[2999]: RTNETLINK answers: File exists
Mar 12 15:19:58 node250 network[2999]: RTNETLINK answers: File exists
Mar 12 15:19:58 node250 network[2999]: RTNETLINK answers: File exists
Mar 12 15:19:58 node250 network[2999]: RTNETLINK answers: File exists
Mar 12 15:19:58 node250 network[2999]: RTNETLINK answers: File exists
Mar 12 15:19:58 node250 systemd[1]: network.service: control process exited, code=exited status=1
Mar 12 15:19:58 node250 systemd[1]: Failed to start LSB: Bring up/down networking.
Mar 12 15:19:58 node250 systemd[1]: Unit network.service entered failed state.
Mar 12 15:19:58 node250 systemd[1]: network.service failed.

Answer 1

使用NetworkManager管理网络
1.确保每个网卡配置中有NM_CONTROLLED=yes
2.systemctl stop NetworkManager
3.systemctl start NetworkManager
4.yum list