实例：修改网卡名

实验环境：CentOS6.8。

[root@localhost6 ~]#ip a #查看网卡信息；现准备修改eth1的网卡名
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:d7:91:33 brd ff:ff:ff:ff:ff:ff
    inet 172.16.252.242/16 brd 172.16.255.255 scope global eth0
    inet6 fe80::20c:29ff:fed7:9133/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:d7:91:3d brd ff:ff:ff:ff:ff:ff
    inet 172.16.252.199/16 brd 172.16.255.255 scope global eth1
    inet6 fe80::20c:29ff:fed7:913d/64 scope link 
       valid_lft forever preferred_lft forever

实验步骤：

　　1、修改网卡名的配置文件；

　　2、卸载网卡驱动；

　　3、装载网卡驱动。

1. #1、修改网卡名的配置文件
   #修改网卡名的配置文件，在/etc/udev/rules.d/70-persistent-net.rules
   [root@localhost6 ~]#cd /etc/udev/
   [root@localhost6 udev]#ls
   makedev.d  rules.d  udev.conf
   [root@localhost6 udev]#cd rules.d/

   [root@localhost6 rules.d]#ls
   60-fprint-autosuspend.rules  60-raw.rules             90-alsa.rules   99-fuse.rules
   60-openct.rules              70-persistent-cd.rules   90-hal.rules
   60-pcmcia.rules              70-persistent-net.rules  98-kexec.rules
   [root@localhost6 rules.d]#vi 70-persistent-net.rules 
   
   # This file was automatically generated by the /lib/udev/write_net_rules
   # program, run by the persistent-net-generator.rules rules file.
   #
   # You can modify it, as long as you keep each rule on a single
   # line, and change only the value of the NAME= key.
   
   # PCI device 0x8086:0x100f (e1000)    ##e1000驱动程序名
   SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:d7:91:33", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
   
   # PCI device 0x8086:0x100f (e1000)
   SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:d7:91:3d", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
   ~                           ##将NAME="eth1"修改成ethxin

   ~ ~ ~ "70-persistent-net.rules" 11L, 585C 
   
   
   

   [root@localhost6 rules.d]#lsmod | grep -i 'e1000'　　#查看驱动程序模块
   e1000 134863 0

   #2、卸载网卡驱动
   [root@localhost6 rules.d]#modprobe -r e1000　　#卸载网卡驱动
   [root@localhost6 rules.d]#lsmod | grep -i 'e1000'　　#查看驱动程序模块，没有数据显示

   #3、装载网卡驱动
   [root@localhost6 ~]#modprobe e1000　　#装载网卡
   [root@localhost6 ~]#ip a
   
   1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 

   link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
   inet 127.0.0.1/8 scope host lo
   inet6 ::1/128 scope host
   valid_lft forever preferred_lft forever
   4: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
   link/ether 00:0c:29:d7:91:33 brd ff:ff:ff:ff:ff:ff
   inet 172.16.252.242/16 brd 172.16.255.255 scope global eth0
   inet6 fe80::20c:29ff:fed7:9133/64 scope link
   valid_lft forever preferred_lft forever
   5: ethxin: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
   link/ether 00:0c:29:d7:91:3d brd ff:ff:ff:ff:ff:ff
   inet6 fe80::20c:29ff:fed7:913d/64 scope link
   valid_lft forever preferred_lft forever