Centos7 修改网卡名称（ens33/em1-----＞eth0）

1、已安装的系统修改网卡名称

#修改网卡配置文件
[root@localhost ~]# cd /etc/sysconfig/network-scripts/[root@localhost network-scripts]# mv ifcfg-ens33 ifcfg-eth0[root@localhost network-scripts]# cat ifcfg-eth0 
TYPE=Ethernet
BOOTPROTO=dhcp
DEFROUTE=yes
NAME=eth0       #将此处由ens33修改为eth0
DEVICE=eth0     #将此处由ens33修改为eth0
ONBOOT=yes#修改内核启动参数，禁用预测命名方案，将 net.ifnames=0	biosdevname=0 ?关闭
[root@localhost ~]# cat /etc/sysconfig/grub 
..........
..........
GRUB_CMDLINE_LINUX="crashkernel= ...... net.ifnames=0 biosdevname=0 quiet"
..........
[root@localhost ~]# grub2-mkconfig -o /boot/grub2/grub.cfg #重启系统，并检查修改结果
[root@localhost ~]# reboot
[root@localhost ~]# ifconfig 
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500inet 192.168.92.129  netmask 255.255.255.0  broadcast 192.168.92.255inet6 fe80::20c:29ff:fef7:f3c6  prefixlen 64