centos6适用:

[root@node1 ~]# cat yum_ip.sh 

#!/bin/bash

# is used to centos 6

mv /etc/sysconfig/network-scripts/ifcfg-eth0{,.bak}

cat >  /etc/sysconfig/network-scripts/ifcfg-eth0 << eof

DEVICE=eth0

HWADDR=00:50:56:37:EA:E6

TYPE=Ethernet

UUID=544ae0fc-e9c1-4752-b3ab-9dbdf08b69b4

ONBOOT=yes

NM_CONTROLLED=no

BOOTPROTO=none

IPADDR=192.168.1.160

NETMASK=255.255.255.0

GATEWAY=192.168.1.1

DNS=202.106.0.20

eof


cat >  /etc/resolv.conf << eof

nameserver 202.106.0.20

eof


for i in `ls  /etc/yum.repos.d/`

do

mv  /etc/yum.repos.d/$i{,.bak}

done  

cat > /etc/yum.repos.d/aliyun.repo << eof

[aliyun]

name=ali

baseurl=http://mirrors.aliyun.com/centos/6/os/x86_64/

gpgcheck=0

enabled=1

[epel]

name=epel

baseurl=http://mirrors.aliyun.com/epel/6/x86_64/

gpgcheck=0

enabled=1

eof


/etc/init.d/network restart