centos7 虛擬機中,網卡不啟動的解決方式

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