1.centOS 7一个解决“network.service: control process exited, code=exited status=1”方法.
今天早上2017-08-04，我打开虚拟机，使用远程工具xshell对虚拟机进行连接，我发现连接不上去，然后我ifconfig，发现找不到ens33了，就剩一个本地回环，看来是我的网络出现了问题，然后我查看我的网络状态，发现了如下情况：
[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.
我在某度上找了好几个答案，都没有找到我能解决问题的答案，然后我进行Google，在一个博客上找到了我需要的答案，不知道是不是会针对于大家都可以，方法是关闭网络管理，如下：
systemctl stop NetworkManager
我在执行上面一步后就已经解决了问题，那个博客给出的答案还有下面的步骤，我没有用：
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@CT71 bin]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.17.251.180 netmask 255.255.0.0 broadcast 172.17.255.255
inet6 fe80::20c:29ff:fe84:b4 prefixlen 64 scopeid 0x20<link>
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
ens34: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.111.110 netmask 255.255.255.0 broadcast 192.168.111.255
inet6 fe80::febf:b561:4150:f3b0 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:84:00:be txqueuelen 1000 (Ethernet)
RX packets 121771 bytes 11870451 (11.3 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 94155 bytes 20071976 (19.1 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
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
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:b6:46:31 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
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原文链接：https://blog.csdn.net/woodrow1994/article/details/79412287