《LINUX入門：CentOS6 虛擬機遷移后網卡名更改問題解決》要點：
本文介紹了LINUX入門：CentOS6 虛擬機遷移后網卡名更改問題解決，希望對您有用。如果有疑問，可以聯系我們。

實驗過程中,我們經常必要復制虛擬機,以模仿生產過程中同等配置的條件.

但無論是初次打開,選擇"我已復制該虛擬機“也好,還是在虛擬機設置>網絡適配器>高級中重新生成Mac地址,開機后選擇”我已移動該虛擬機“也罷.開機后查詢IP時,我們都會很遺憾的發現,網卡的名字,紛歧樣了.

這是因為原Mac地址占用舊網卡,新Mac地址只能使用新的網卡名稱.復制虛擬機為了不與原虛擬機沖突,也是天生了新的Mac地址.

[root@CentOS6 ~]# ifconfig
eth2? ? ? Link encap:Ethernet? HWaddr 00:50:56:22:C9:22?
? ? ? ? ? inet addr:192.168.234.187? Bcast:192.168.234.255? Mask:255.255.255.0
? ? ? ? ? inet6 addr: fe80::250:56ff:fe22:c922/64 Scope:Link
? ? ? ? ? UP BROADCAST RUNNING MULTICAST? MTU:1500? Metric:1?
? ? ? ? ? RX packets:4 errors:0 dropped:0 overruns:0 frame:0
? ? ? ? ? TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
? ? ? ? ? collisions:0 txqueuelen:1000?
? ? ? ? ? RX bytes:806 (806.0 b)? TX bytes:1152 (1.1 KiB)
eth3? ? ? Link encap:Ethernet? HWaddr 00:50:56:3A:FD:74?
? ? ? ? ? inet addr:172.17.251.174? Bcast:172.17.255.255? Mask:255.255.0.0
? ? ? ? ? inet6 addr: fe80::250:56ff:fe3a:fd74/64 Scope:Link
? ? ? ? ? UP BROADCAST RUNNING MULTICAST? MTU:1500? Metric:1
? ? ? ? ? RX packets:2565 errors:0 dropped:0 overruns:0 frame:0
? ? ? ? ? TX packets:61 errors:0 dropped:0 overruns:0 carrier:0
? ? ? ? ? collisions:0 txqueuelen:1000?
? ? ? ? ? RX bytes:243027 (237.3 KiB)? TX bytes:9974 (9.7 KiB)
lo? ? ? ? Link encap:Local Loopback?
? ? ? ? ? inet addr:127.0.0.1? Mask:255.0.0.0
? ? ? ? ? inet6 addr: ::1/128 Scope:Host
? ? ? ? ? UP LOOPBACK RUNNING? MTU:65536? Metric:1
? ? ? ? ? RX packets:4 errors:0 dropped:0 overruns:0 frame:0
? ? ? ? ? TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
? ? ? ? ? collisions:0 txqueuelen:0?
? ? ? ? ? RX bytes:240 (240.0 b)? TX bytes:240 (240.0 b)

雖然不影響使用,但怎么看都不舒服啊.而且有些實驗中網卡名不統一也只有麻煩.正所謂沒有標準化就很難進行自動化管理.
那么,如何變動遷移后的虛擬機的網卡名呢?

(1).改動配置文件/etc/udev/rules.d/70-persistent-net.rules
[root@centos6 ~]# 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{address}=="00:0c:29:13:d6:94", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
?
# PCI device 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:13:d6:9e", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
?
# PCI device 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:50:56:22:c9:22", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2"
?
# PCI device 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:50:56:3a:fd:74", ATTR{type}=="1", KERNEL=="eth*", NAME="eth3"

刪除原Mac,變動NAME值,搞定.改好后是這個樣子.
[root@centos6 rules.d]# 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{address}=="00:50:56:22:c9:22", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:50:56:3a:fd:74", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
~

(2).重啟或重裝網卡驅動,使配置文件生效
查看網卡驅動名：ethtool -i eth2或dmesg|grep -i eth
卸載網卡驅動：modprobe -r e1000 或rmmod e1000
裝載網卡驅動：modprobe e1000
[root@centos6 rules.d]# dmesg|grep -i eth
e1000 0000:02:01.0: eth0: (PCI:66MHz:32-bit) 00:50:56:3a:fd:74
e1000 0000:02:01.0: eth0: Intel(R) PRO/1000 Network Connection
e1000 0000:02:02.0: eth1: (PCI:66MHz:32-bit) 00:50:56:22:c9:22
e1000 0000:02:02.0: eth1: Intel(R) PRO/1000 Network Connection
udev: renamed network interface eth1 to eth2
udev: renamed network interface eth0 to eth3
e1000: eth3 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
8021q: adding VLAN 0 to HW filter on device eth3
e1000: eth2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
8021q: adding VLAN 0 to HW filter on device eth2
eth2: no IPv6 routers present
eth3: no IPv6 routers present
#阿拉的網卡驅動只有e1000一塊,所以阿拉卸載一塊就夠了.有的網卡名紛歧樣,要分別卸載
[root@centos6 rules.d]# rmmod e1000
#再用ifconfig查看會發現原網卡信息不見了.(阿拉這一步就不粘代碼了)
#裝載網卡驅動
[root@centos6 rules.d]# modprobe e1000
#再次查看,修改成功
[root@centos6 ~]# ifconfig
eth0? ? ? Link encap:Ethernet? HWaddr 00:50:56:22:C9:22?
? ? ? ? ? inet addr:192.168.234.187? Bcast:192.168.234.255? Mask:255.255.255.0
? ? ? ? ? inet6 addr: fe80::250:56ff:fe22:c922/64 Scope:Link
? ? ? ? ? UP BROADCAST RUNNING MULTICAST? MTU:1500? Metric:1
? ? ? ? ? RX packets:3 errors:0 dropped:0 overruns:0 frame:0
? ? ? ? ? TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
? ? ? ? ? collisions:0 txqueuelen:1000?
? ? ? ? ? RX bytes:746 (746.0 b)? TX bytes:1152 (1.1 KiB)
?
eth1? ? ? Link encap:Ethernet? HWaddr 00:50:56:3A:FD:74?
? ? ? ? ? inet addr:172.17.251.174? Bcast:172.17.255.255? Mask:255.255.0.0
? ? ? ? ? inet6 addr: fe80::250:56ff:fe3a:fd74/64 Scope:Link
? ? ? ? ? UP BROADCAST RUNNING MULTICAST? MTU:1500? Metric:1
? ? ? ? ? RX packets:475 errors:0 dropped:0 overruns:0 frame:0
? ? ? ? ? TX packets:50 errors:0 dropped:0 overruns:0 carrier:0
? ? ? ? ? collisions:0 txqueuelen:1000?
? ? ? ? ? RX bytes:48665 (47.5 KiB)? TX bytes:7289 (7.1 KiB)
?
lo? ? ? ? Link encap:Local Loopback?
? ? ? ? ? inet addr:127.0.0.1? Mask:255.0.0.0
? ? ? ? ? inet6 addr: ::1/128 Scope:Host
? ? ? ? ? UP LOOPBACK RUNNING? MTU:65536? Metric:1
? ? ? ? ? RX packets:80 errors:0 dropped:0 overruns:0 frame:0
? ? ? ? ? TX packets:80 errors:0 dropped:0 overruns:0 carrier:0
? ? ? ? ? collisions:0 txqueuelen:0?
? ? ? ? ? RX bytes:6148 (6.0 KiB)? TX bytes:6148 (6.0 KiB)

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