sudo vim /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0 TYPE=Ethernet UUID=3323da63-1881-4256-89bb-92a01185d0f2 ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=dhcp HWADDR=08:00:27:73:B5:9A DEFRDNS=yes PEERROUTES=yes IPV4_FALURE_FATAL=yes IPV6INIT=no NAME="System eth0"
ifup /etc/sysconfig/network-scripts/ifcfg-eth0 开启网卡
运行/etc/init.d/network restart