#!/bin/bash#description: change ip on instances#Usage: ./ChangeIP.sh fileId vmId# flush the caches of remote hosts>~/.ssh/known_hosts#define the network configfile locationdist=/etc/sysconfig/network-scripts/ifcfg-eth0# define a function which copy the new ifcfg-eth0 file# from cloudstack management or from other host to new# instance boot from vm_fixip without interactivefunction scp_file(){expect -c “set timeout -1spawn -noecho scp $1 $2expect “yes/no”send \”yes\r\”expect “password:”send \”password\r\”expect eof”}scp_file ifcfg-eth0.$1root@vm$2:$dist# this function named res_new means restart network# on new instance loading from new network config file# without interactivefunction res_net(){expect -c “set timeout -1spawn -noecho ssh $1 $2expect “password:”send \”password\r\”expect eof”}res_net root@vm$2 “service network restart > /dev/null 2>&1 &”sleep 2exit 0
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，服务器空间，香港服务器租用即使爬到最高的山上，一次也只能脚踏实地地迈一步。
