1.场景描述，我在电脑里装好的虚拟机，今天突然就网络无法打开，并出现如下报错：
[root@ansible-control ~]# systemctl start network Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details. [root@ansible-control ~]# 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 日 2019-09-29 22:44:34 CST; 1s ago Docs: man:systemd-sysv-generator(8) Process: 5042 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)
2.解决方法
关闭NetworkManager，罪魁祸首就是这个服务！
第一步：查看NetworkManager服务状态：
systemctl status NetworkManager 一般是开启的状态！
第二步：关闭NetworkManager，并设置开启默认不启动该服务：
systemctl stop NetworkManager systemctl disable NetworkManager
第三步：重启network服务
systemctl status network.service
第四步：再次重启网络
systemctl restart network systemctl status network
此时已经成功开启网络！
