cenos7 Job for network.service failed. See ‘systemctl status network.service‘ and ‘journalctl -xn‘问题

在一个博客上找到了我需要的答案，就是简单的关闭网络服务，然后再加载服务，然后再重启就好了，

[root@CT71 ~]# systemctl status network.service 
● 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 Fri 2017-08-04 08:20:31 CST; 1min 44s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 62726 ExecStop=/etc/rc.d/init.d/network stop (code=exited, status=0/SUCCESS)
  Process: 63183 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)
 
Aug 04 08:20:31 CT71 network[63183]: RTNETLINK answers: File exists
Aug 04 08:20:31 CT71 network[63183]: RTNETLINK answers: File exists
Aug 04 08:20:31 CT71 network[63183]: RTNETLINK answers: File exists
Aug 04 08:20:31 CT71 network[63183]: RTNETLINK answers: File exists
Aug 04 08:20:31 CT71 network[63183]: RTNETLINK answers: File exists
Aug 04 08:20:31 CT71 network[63183]: RTNETLINK answers: File exists
Aug 04 08:20:31 CT71 systemd[1]: network.service: control process exited, code=exited status=1
Aug 04 08:20:31 CT71 systemd[1]: Failed to start LSB: Bring up/down networking.
Aug 04 08:20:31 CT71 systemd[1]: Unit network.service entered failed state.
Aug 04 08:20:31 CT71 systemd[1]: network.service failed.

如下：
1、

systemctl stop NetworkManager

2、

systemctl disable NetworkManager

Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.

然后重启网络：

systemctl start network.service

可以使用了：

[root@123 bin]# ifconfig
ens33: flags=4163  mtu 1500
        inet 192.168.10.128  netmask 255.255.0.0  broadcast 172.17.255.255
        inet6 fe80::20c:29ff:fe84:b4  prefixlen 64  scopeid 0x20
        ether 00:0c:29:84:00:b4  txqueuelen 1000  (Ethernet)
        RX packets 3629648  bytes 315562709 (300.9 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 2974  bytes 295864 (288.9 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
 
lo: flags=73  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10
        loop  txqueuelen 1  (Local Loopback)
        RX packets 90  bytes 6748 (6.5 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 90  bytes 6748 (6.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0