RHEL7/CentOS7中更改网卡默认名称

1、重命名并修改网卡配置文件，将"NAME"参数更为我们熟悉的“eth*”，这里我将其改为"eth0"

 [root@localhost ~]# cd /etc/sysconfig/network-scripts/
 [root@localhost network-scripts]# mv ifcfg-eno16777736 ifcfg-eth0
 [root@localhost network-scripts]# vim ifcfg-eth0
 HWADDR=:0C::BA::E3
 TYPE=Ethernet
 BOOTPROTO=dhcp
 DEFROUTE=yes
 PEERDNS=yes
 PEERROUTES=yes
 IPV4_FAILURE_FATAL=no
 IPV6INIT=yes
 IPV6_AUTOCONF=yes
 IPV6_DEFROUTE=yes
 IPV6_PEERDNS=yes
 IPV6_PEERROUTES=yes
 IPV6_FAILURE_FATAL=no
 NAME=eth0    #修改此参数，和文件名称ifcfg-eth0保持一致
 UUID=a937a6e4-f70d--b617-ea0b53cab76e
 ONBOOT=yes

2、修改grub文件/etc/sysconfig/grub，在“GRUB_CMDLINE_LINUX”参数行中添加“net.ifnames=0 biosdevname=0”

 [root@localhost network-scripts]# vim /etc/sysconfig/grub
 GRUB_TIMEOUT=
 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
 GRUB_DEFAULT=saved
 GRUB_DISABLE_SUBMENU=true
 GRUB_TERMINAL_OUTPUT="console"
 GRUB_CMDLINE_LINUX="rd.lvm.lv=rhel/root vconsole.keymap=us vconsole.font=latarcyrheb-sun16 crashkernel=auto net.ifnames=0 biosdevname=0 rhgb quiet"
 GRUB_DISABLE_RECOVERY="true"

3、重新生成grub配置并更新内核参数:

运行命令:”grub2-mkconfig -o /boot/grub2/grub.cfg“

 [root@localhost network-scripts]# grub2-mkconfig -o /boot/grub2/grub.cfgGenerating grub configuration file ...
 Found linux image: /boot/vmlinuz-3.10.-.el7.x86_64
 Found initrd image: /boot/initramfs-3.10.-.el7.x86_64.img
 Found linux image: /boot/vmlinuz--rescue-e5dec78a32184af9be1ffa5acfa5efbb
 Found initrd image: /boot/initramfs--rescue-e5dec78a32184af9be1ffa5acfa5efbb.img
 done

4、重启系统后，ifconfig查看：

 [root@localhost ~]# ifconfig
 eth0: flags=<UP,BROADCAST,MULTICAST>  mtu
         ether :0c::ba::e3  txqueuelen   (Ethernet)
         RX packets   bytes  (47.0 KiB)
         RX errors   dropped   overruns   frame
         TX packets   bytes  (0.0 B)
         TX errors   dropped  overruns   carrier   collisions 

 eth1: flags=<UP,BROADCAST,RUNNING,MULTICAST>  mtu
         ether :0c::ba::ed  txqueuelen   (Ethernet)
         RX packets   bytes  (1.8 MiB)
         RX errors   dropped   overruns   frame
         TX packets   bytes  (0.0 B)
         TX errors   dropped  overruns   carrier   collisions 

5、为了双重保险起见建议使用udev规则管理，在”/etc/udev/rules.d“目录中创建一个网卡规则”70-net.rules“,并写入下面的语句:

ACTION=="add",SUBSYSTEM=="net",DRIVERS=="*",ATTR{address}=="00:0c:29:ba:53:e3",ATTR{type}=="1",KERNEL=="eth*",NAME="eth0"

 [root@localhost ~]# cd /etc/udev/rules.d/
 [root@localhost rules.d]# vim -net.rules
 ACTION=="add",SUBSYSTEM=="net",DRIVERS=="*",ATTR{address}=="00:0c:29:ba:53:e3",ATTR{type}=="",KERNEL=="eth*",NAME="eth0"
 [root@localhost rules.d]# udevadm trigger