解決【ens33】這個網卡一直無法激活問題

CentOS的啟動出錯：

當執行 ifup ens33

出現錯誤：

[[email protected] ~]# ifup ens33

Error: Connection activation failed: No suitable device found for this connection (device lo not available because device is strictly unmanaged).

解決辦法：

[[email protected] ~]# chkconfig NetworkManager off

Note: Forwarding request to ‘systemctl disable NetworkManager.service’.

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.

Removed symlink /etc/systemd/system/network-online.target.wants/NetworkManager-wait-online.service.

[[email protected] ~]# chkconfig network on

[[email protected] ~]# service NetworkManager stop

Redirecting to /bin/systemctl stop NetworkManager.service

[[email protected] ~]# service network start

Starting network (via systemctl): [ OK ]