CentOS Linux解决Device eth0 does not seem to be present

在KVM里安装的CentOS Linux系统。断电后重启系统，网络突然不通。ifconfig -a|more没有看到eth0.。然后重启网络服务，报错如下：故障现象：service network restartShutting down loopback insterface: [ OK ]
Bringing up loopback insterface: [ OK ]
Bringing up interface eth0: Device eth0 does not seem to be present,delaying initialization. [FAILED]解决办法：1.首先，打开/etc/udev/rules.d/70-persistent-net.rulesvi /etc/udev/rules.d/70-persistent-net.rules:
然后记录下来eth1网卡的mac地址。
2.打开/etc/sysconfig/network-scripts/ifcfg-eth0vi /etc/sysconfig/network-scripts/ifcfg-eth0:把DEVICE="eth0" 改成 DEVICE="eth1" ,
把eth0的当前HWADDR地址改成已经记录下来eth1网卡的mac地址。HWADDR="XX:XX:XX:XX:XX:XX".3.最后，重启网络service network restart
或者/etc/init.d/network restart这样，网络服务就正常了。