1 编辑网络配置

sudo vi /etc/NetworkManager/NetworkManager.conf

把[ifupdown]下的managed改为true

2 重启网络管理器

1.启动：systemctl start NetworkManager 2.关闭：systemctl stop NetworkManager

3.开机启动：systemctl enable NetworkManger

4.查看是否开机启动：systemctl is-enabled NetworkManager

5.禁用开机启动：systemctl disable NetworkManager