CentOS 网络连接错误：Job for network.service failed because the control process exited with error code.

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文章讲述了用户在虚拟机中遇到网络连接问题，systemctlrestartnetwork命令失败，系统报错关于控制进程退出。解决方法是先停止NetWorkManager，再重启network服务。

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今天虚拟机启动后突然无法连接网络
使用

sudo systemctl restart network

显示：

Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.

sudo systemctl status network查看连接状态显示：

● 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 Sun 2023-12-31 12:32:41 CST; 18s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 4106 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)

Dec 31 12:32:41 host111 network[4106]: RTNETLINK answers: File exists
Dec 31 12:32:41 host111 network[4106]: RTNETLINK answers: File exists
Dec 31 12:32:41 host111 network[4106]: RTNETLINK answers: File exists
Dec 31 12:32:41 host111 network[4106]: RTNETLINK answers: File exists
Dec 31 12:32:41 host111 network[4106]: RTNETLINK answers: File exists
Dec 31 12:32:41 host111 network[4106]: RTNETLINK answers: File exists
Dec 31 12:32:41 host111 systemd[1]: network.service: control process exited, code=exited status=1
Dec 31 12:32:41 host111 systemd[1]: Failed to start LSB: Bring up/down networking.
Dec 31 12:32:41 host111 systemd[1]: Unit network.service entered failed state.
Dec 31 12:32:41 host111 systemd[1]: network.service failed.

解决方法：
关闭NetWork Manager然后重启network

sudo systemctl stop NetworkManager
sudo systemctl start network