虚拟机克隆后没网，重启网络：failed to stop network-manager.service:Unit network-manager.service not loaded问题解决

1.在/etc/sysconfig/network-scripts/ifcfg-ens33文件中添加虚拟机主机的MAC地址值，保存退出11

2.删除NetworkManager缓存文件

service NetworkManager stop

rm /var/lib/NetworkManager/NetworkManager.state

3.修改/var/lib/NetworkManager目录下的Netwrok-intern.conf文件。在文件末尾添加managed=true

cd /var/lib/NetworkManager

vi Network-intern.conf
 
managed=true

:wq

4.重启网络，systemctl restart network

5.输入ip addr命令即可看到设置的IP地址