解决【ens33】这个网卡一直无法激活问题

CentOS的启动出错：

当执行 ifup ens33

出现错误：

[[email protected] ~]# ifup ens33

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

解决办法：

[[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 ]