修改linux中的網卡名

如何修改linux中的網卡名

• 用ip add 或者ip link 命令查看網絡接口詳細信息

[root@centos6 ~]# ip add
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:29:3d:56:58 brd ff:ff:ff:ff:ff:ff
    inet 192.168.27.128/24 brd 192.168.27.255 scope global eth0
    inet6 fe80::20c:29ff:fe3d:5658/64 scope link 
       valid_lft forever preferred_lft forever
3: pan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN 
    link/ether 52:8f:9d:89:cb:a1 brd ff:ff:ff:ff:ff:ff
4: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:3d:56:62 brd ff:ff:ff:ff:ff:ff
    inet 172.18.16.20/16 brd 172.18.255.255 scope global eth1
    inet6 fe80::20c:29ff:fe3d:5662/64 scope link 
       valid_lft forever preferred_lft forever

• 從上面看出有一個爲eth1 的網卡，就把這個名字改成GOOD 的名字
  

操作

1. 首先修改/etc/udev/rules./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)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:3d:56:58", ATTR
{type}=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:3d:56:62", ATTR
{type}=="1", KERNEL=="eth*", NAME="GOOD"  # 找到剛剛eth1的對應的物理地址，修改這一段的name中的字段，變成自己想要的

1. 由於修改後並不是立馬生效，需要重啓後生效，不想重啓要讓這個配置文件生效的辦法就是卸載網卡驅動然後在重裝
2. 如何查看網卡驅動，用ethtool -i eth1

[root@centos6 ~]# ethtool -i eth1
driver: e1000  #這行顯示驅動爲e1000
version: 7.3.21-k8-NAPI
firmware-version: 
bus-info: 0000:02:05.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: no
[root@centos6 ~]# 

1. 卸載網卡 modprobe -r e1000 ,

[root@centos6 ~]# modprobe -r e1000
這需要特別注意，由於我們的用的都是同一型號的網卡，所以驅動也一樣
雖然有兩個網卡，但是取得的都是一樣的，所以卸載之後不能上網，也遠程連接不了！！！！

1. 由於把網卡驅動卸載了，所以們要在本地主機上操作，在把網卡驅動裝上 modprobe e1000

[root@centos6 ~]# modprobe -r e1000
[root@centos6 ~]# ip add
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
3: pan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN 
    link/ether 52:8f:9d:89:cb:a1 brd ff:ff:ff:ff:ff:ff
5: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:3d:56:58 brd ff:ff:ff:ff:ff:ff
    inet 192.168.27.128/24 brd 192.168.27.255 scope global eth0
    inet6 fe80::20c:29ff:fe3d:5658/64 scope link 
       valid_lft forever preferred_lft forever
6: GOOD: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:3d:56:62 brd ff:ff:ff:ff:ff:ff
    inet 172.18.16.20/16 brd 172.18.255.255 scope global GOOD
    inet6 fe80::20c:29ff:fe3d:5662/64 scope link 
       valid_lft forever preferred_lft forever
[root@centos6 ~]# 

1. 這樣就不用重啓就可以生效了。