Simple Shell Programming Sample with Expect--shutdowm GOMS in batch

Simple Shell Programming Sample with Expect--shutdown GOMS in batch 【需求】 设备管理员Chen Wien 想批量远程关闭win xp机器（已有相关guide），以及linux相关机器，如GOMS，这里对GOMS （linux类server）一个简单的批处理。

如果只是关3,5台机器，批量脚本效率体现不了，如果是10,30,100台,…..，那是必须的，You know！

【方案】

Shell Overview：

Shell 在系统中的位置 Linux网络体系结构

写一个shell脚本，调用GOMS自带的expect 命令，然后把shell脚本放到其中的一个GOMS机器（假设GOMS-KK）执行。脚本先对其他GOMS进行批量关闭，通过ping 确认其他所有GOMS关闭后，再关闭GOMS-KK本身。并记录相关操作log，以备查验。

由于NetAct上面没有安装expect，脚本暂时只能在GOMS上面运行。 [OR ] 通过hit macro调用expect/shell脚本方式，log存本地PC，Anyway it is similar. 【脚本实现】 Simple workflow: 1. Clear history log : /var/log/shutgoms_bat_xxx.log firstly. 2. Modify Goms ip list to be shut down ，check each shutdown operation result 3. Check connection after shutdown to confirm again by ping. 4. If all other GOMS shut down, then at last shut down the GOMS where the shell scripts are. 5. Write the log of whole process: /var/log/shutgoms_bat_xxxx.log. There are 3 script files to be written as below: 1) shutgoms.sh (using expect) 2）scplog2netact.sh --after shutdown all goms, transfer log to netact [Optional ] 3) shutallgoms.sh (using bash), it will call shutgoms.sh & scplog2netact.sh. 1. shutgoms.sh #!/usr/bin/expect set host [lindex $argv 0] set username [lindex $argv 1] set nemupwd [lindex $argv 2] set rootpwd [lindex $argv 3] spawn ssh $username@$host expect { "(yes/no)?" { send "yes\n" } } expect { "Warning" { exec sleep 3 expect { "*assword:" { send "$nemupwd\n" } } } } expect { "*assword:" { send "$nemupwd\n" } } exec sleep 1 #already switch to target goms send "su - \n" expect { "*assword:" { send "$rootpwd\n" #halt send "shutdown -h now\n"

} } # send "exit\r" expect eof

2. scplog2netact.sh #!/usr/bin/expect set file [lindex $argv 0] set host [lindex $argv 1] set netact_ip [lindex $argv 2] set host_pwd [lindex $argv 3] spawn scp $file $host@$netact_ip:/var/log

expect { "(yes/no)?" { send "yes\n" } } expect { "*assword:" { send "$host_pwd\n" } } expect eof 3.shutallgoms.sh: -shut the goms list you want to shut #!/bin/sh ##############step1: input goms ip list to be shutdown############################## #when need add one more goms, pls add “Goms_ip,nemu_usr,nemu_pwd,root_pwd # to the below 4 variable in order with blank space to separate Goms_ip=(10.68.195.109 10.68.195.93 10.68.195.105) Nemu_usr=(Nemuadmin Nemuadmin Nemuadmin) Nemu_pwd=(nemuuser nemuuser nemuuser) Root_pwd=(root root root) ###############step2:clean history log################################ yy=`date +%Y` mm=`date +%m` dd=`date +%d` Log="/var/log/shutgoms_bat_$yy$mm$dd.log" rm -rf $Log Shut_local_goms=0 #if all other goms shutdown ok, then shutdown local machine

#check the length of 4 arrays above should be equal, else exit if [ "${#Goms_ip[@]}" -eq "${#Nemu_usr[@]}" ] && [ "${#Nemu_usr[@]}" -eq "${#Nemu_pwd[@]}" ] && [ "${#Nemu_pwd[@]}" -eq "${#Root_pwd[@]}" ];then

echo "Input ip list are matched." >>$Log else echo "Input element num of ip list array is not equal, pls modify!" >>$Log exit fi ##get local goms ip (south and north) ret=`zship` #Northbound IP: 10.68.195.106 Southbound IP: 10.68.195.105 south_ip=`echo $ret |cut -d: -f2|cut -d " " -f2` north_ip=`echo $ret |cut -d: -f3|cut -d " " -f2` echo "south ip is:$south_ip,north ip is:$north_ip" ############step3:shut down goms one by one############################## #If Goms_ip is local machine ip, overpass firstly, finally shutdown itself. for((i=0;i<${#Goms_ip[@]};i++));do if [ "${Goms_ip[i]}" == "$south_ip" ] || [ "${Goms_ip[i]}" == "$north_ip" ];then echo "This is local goms ip:No $i --${Goms_ip[i]},overpass firstly" >>$Log continue fi echo "shut down goms:No $i --${Goms_ip[i]}" >>$Log #shutdown the goms ./shutgoms.sh ${Goms_ip[i]} ${Nemu_usr[i]} ${Nemu_pwd[i]} ${Root_pwd[i]} done ###step4: confirm connection by ping after shut down##################### #If Goms_ip is local machine ip, it will overpass firstly, for goms_i in ${Goms_ip[@]}; do if [ "$goms_i" == "$south_ip" ] || [ "$goms_i" == "$north_ip" ];then echo "This is local goms ip:$goms_i,overpass firstly" >>$Log continue fi echo "ping goms:$goms_i" >>$Log #ping the goms, check the result, if some goms fail to shutdown, set Shut_local_goms=1 if getres_byping $goms_i then echo "$goms_i:ping still ok" else echo "$goms_i:ping nok now" fi done