通常爲了節省時間，在VMware中安裝一套Linux後，會直接克隆一份出來使用。但在克隆REDHAT 6後，會發現網卡名稱發生變化，比如eth0會變爲eth1，下面介紹下克隆後的redhat 6，如何修改主機名、IP地址和網卡名稱。
修改主機名（共2步）
hostname amto02
vi /etc/sysconfig/network -> 修改項：HOSTNAME=amto02
還原網卡名稱爲eth0：
[root@amto02 u01]# cat /etc/udev/rules.d/70-persistent-net.rules.bak
# 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) (custom name provided by external tool)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:27:be:dc", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:0x100f (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:8a:8d:19", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
在該配置文件中會發現存在2條記錄，第二條記錄是克隆/複製虛擬機後，重新生成的一個mac地址（00:0c:29:8a:8d:19），因此，需要把就配置刪除掉，也就是將第1條記錄刪除。並且第2條記錄的最後面，將eth1改爲eth0。修改後的配置文件爲：
[root@amto02 u01]# 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{address}=="00:0c:29:8a:8d:19", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
修改IP地址：
運行setup或者system-config-network，按照提示填寫新的IP信息即可。
重啓網卡服務：
service NetworkManager restart
service network restart