centos7 虚拟机中,网卡不启动

使用NAT模式的虚拟centos, 只显示两个网卡,无法连接外网,

输入systemctl start network后报错信息"

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

禁掉系统自带的NetworkManager服务就可解决

systemctl stop NetworkManager          # 停止NetworkManager服务
systemctl disable NetworkManager      # 设置开机不启动
systemctl start network              # 启动网络服务