1.借鉴：
虚拟机拷贝后网卡eth0变成了eth1的解决办法
2.开始
why: 使用parallels desktop或者是VMware克隆虚拟机之后，无法连接上网络，使用命令ifconfig eth0 找不到eth0，所以有了这篇文章。
2.1 修改 /etc/udev/rules.d/70-persistent-net.rules 文件
具体做法是：
将eth0那行删除，并将name由eth1改为eth0，注意：不能图方便删除eth1，因为ATTR{address}属性有用到
# 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:d6:67:b6", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"# PCI device 0x8086:0x100f (e1000)SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:42:00:55", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
2.2 配置ifcfg-eth0
[root@hadoop ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0
eEVICE="eth0"
BOOTPROTO="static"
HWADDR="00:0c:29:42:00:55"
NM_CONTROLLED="yes"
ONBOOT="yes"
TYPE="Ethernet"
UUID="01786dd9-7107-44d7-ad97-a82411385918"
NM_CONTROLLED=no
PEERDNS=no
IPADDR=192.168.22.150
GATEWAY=192.168.22.2
DNS1=8.8.8.8
DNS2=192.168.1.1
NETMASK=255.255.255.0
需要注意的是：ifcfg-eth0文件中的HWADDR（一般为大写）要和70-persistent-net.rules文件中name为eth0的ATTR{address}（一般为小写）属性相同
需要注意的是标红的部分要相同
2.3 虚拟机重启 reboot
