使用NAT模式的虛擬centos, 只顯示兩個網卡,無法連接外網,

輸入systemctl start network后報錯信息"

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
禁掉系統自帶的NetworkManager服務就可解決

systemctl stop NetworkManager # 停止NetworkManager服務
systemctl disable NetworkManager # 設置開機不啟動
systemctl start network # 啟動網絡服務

或者

停掉NetworkManager
service NetworkManager stop
chkconfig NetworkManager off

重啟網絡
systemctl restart network