在測試或生產環境中，經常會遇到轉殖的伺服器（虛擬機器），網絡卡配置經常也會轉殖為eth1，下面講如何將網絡卡配置修改為eth0（eth1網絡卡也可以正常使用，但是有些強逼症的同學看不習慣）；
配置環境：rhel6
目錄
步驟一：更改伺服器的網絡卡名，將轉殖的伺服器網絡卡配置修改為eth0；
步驟二：修改網絡卡名（ifcfg-eth1修改為ifcfg-eth0）
步驟三：修改網絡卡配置（device=eth1修改為device=eth0）
[root@localhost ~]# ip a
1: lo: mtu 16436 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: eth1:
mtu 1500 qdisc pfifo_fast state up qlen 1000
link/ether 00:0c:29:bc:7a:aa brd ff:ff:ff:ff:ff:ff
inet 192.168.50.44/27 brd 192.168.50.63 scope global eth1
inet6 fe80::20c:29ff:febc:7aaa/64 scope link
valid_lft forever preferred_lft forever
3: pan0:
mtu 1500 qdisc noop state down
link/ether 9e:62:69:38:2f:f0 brd ff:ff:ff:ff:ff:ff
[root@localhost ~]# cat /etc/udev/rules.d/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=="00:0c:29:7d:e0:e9", attr=="1", kernel=="eth*", name="eth0"
# pci device 0x8086:0x100f (e1000)
subsystem=="net", action=="add", drivers=="?*", attr=="00:0c:29:bc:7a:aa", attr=="1", kernel=="eth*", name="eth1"
[root@localhost ~]# vim /etc/udev/rules.d/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=="00:0c:29:7d:e0:e9", attr=="1", kernel=="eth*", name="eth0"
# pci device 0x8086:0x100f (e1000)
subsystem=="net", action=="add", drivers=="?*", attr=="00:0c:29:bc:7a:aa", attr=="1", kernel=="eth*", name="eth0"
mv /etc/sysconfig/network-scripts/ifcfg-eth1 /etc/sysconfig/network-scripts/ifcfg-eth0[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
device=eth0
onboot=yes
bootproto=dhcp
#ipaddr=192.168.2.30
#netmast=255.255.255.0
#gateway=192.168.2.254
[root@localhost ~]# /etc/init.d/network restart
關閉環迴介面： [確定]
彈出環迴介面： [確定]
彈出介面 eth0： 活躍連線狀態：啟用中
活躍連線路徑：/org/freedesktop/networkmanager/activeconnection/3
狀態：啟用中
狀態：啟用的
連線被啟用
[確定]
[root@localhost ~]# reboot
[root@localhost ~]# ip a
1: lo: mtu 16436 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:
mtu 1500 qdisc pfifo_fast state up qlen 1000
link/ether 00:0c:29:bc:7a:aa brd ff:ff:ff:ff:ff:ff
inet 192.168.50.44/27 brd 192.168.50.63 scope global eth0
inet6 fe80::20c:29ff:febc:7aaa/64 scope link
valid_lft forever preferred_lft forever
3: pan0:
mtu 1500 qdisc noop state down
link/ether 32:ac:93:52:29:2f brd ff:ff:ff:ff:ff:ff
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