VMware中克隆虚拟机出现eth0改变为eth1情况

解决如下：

查看复制虚拟机网卡信息如下：

 root@jcfx-2 ~]# ifconfig
 eth1      Link encap:Ethernet  HWaddr 00:0C:29:CC:32:63
           inet addr:192.168.72.11  Bcast:192.168.72.255  Mask:255.255.255.0
           inet6 addr: fe80::20c:29ff:fecc:3263/64 Scope:Link
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:17551 errors:0 dropped:0 overruns:0 frame:0
           TX packets:166 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:1303129 (1.2 MiB)  TX bytes:63288 (61.8 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:16436  Metric:1
           RX packets:8 errors:0 dropped:0 overruns:0 frame:0
           TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0
           RX bytes:584 (584.0 b)  TX bytes:584 (584.0 b）

具体需求是将eth1修改为eth0：

为什么eth0会变成eth1?

Linux distribution使用udev动态管理设备文件，并根据设备的信息对其进行持久化命名。udev会在系统引导的过程中识别网卡，将mac地址和网卡名称对应起来记录在udev的规则脚本中。而对于新的虚拟机，VMware会自动为虚拟机的网卡生成MAC地址，当你克隆或者重装虚拟机软件时，由于你使用的是以前系统虚拟硬盘的信息，而该系统中已经有eth0的信息，对于这个新的网卡，udev会自动将其命名为eth1（累加的原则），所以在你的系统启动后，你使用ifconfig看到的网卡名为eth1；

在RedHat中，udev记录网络规则的脚本为：/etc/udev/rules.d/70-persistent-net.rules

 [root@jcfx-2 ~]# more /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 0x15ad:0x07b0 (vmxnet3)
 SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:a0:25:f7", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
 # PCI device 0x15ad:0x07b0 (vmxnet3)
 SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:cc:32:63", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

 解决如下：
 将70-persistent-net.rules脚本中多出来的eth1信息注销，并且修改原有的eth0的MAC地址信息，该信息与eth1的MAC信息保持一致，或者修改为别的MAC地址；
 修改如下：
 [root@jcfx-2 ~]# more /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 0x15ad:0x07b0 (vmxnet3)
 SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:cc:32:63", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
 # PCI device 0x15ad:0x07b0 (vmxnet3)
 #SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:cc:32:63", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
 最后重启服务器：
 reboot