昨天配置好的虛擬機器，今天開啟一看，X-Shell發現裡不上了，進到虛擬機器介面 ip addr檢視資訊，結果如下圖

在開機之後，發現網絡卡沒有啟動起來，進行了如下操作
1、[[email protected] es]# ifup ens33
錯誤：啟用連線失敗：No suitable device found for this connection.
2、[[email protected] es]#  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

解決、

[[email protected] es]# systemctl stop NetworkManager
[[email protected] es]# systemctl disable NetworkManager
Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.
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至此，問題解決