使用ip addr查看网卡名称,如:eth0
ip addr
eth0
vim /etc/sysconfig/network-scripts/ifcfg-eth0,编辑网卡名对应的配置文件:
vim /etc/sysconfig/network-scripts/ifcfg-eth0
BOOTPROTO=dhcp ONBOOT=yes
3.重启网络服务systemctl restart network
systemctl restart network