shell监控系统资源并通过短信报警的脚本

#!/bin/bash#监控用户登录Usermonitor () {LoginUser=`uptime | awk '{print $6}'`if [ $LoginUser -ge 2 ]thenCritical="当前系统登录用户人数超过1人，具体人数为：$LoginUser 个,请确认操作者人数。"status=0elseecho "loginuser ok"status=1fi013.}#监控内存MemMonitor () {MemTotal=`free -m | grep Mem | awk -F: '{print $2}' | awk '{print $1}'`MemFree=`free -m | grep cache | awk NR==2 | awk '{print $4}'`MemFreeB=`awk 'BEGIN{printf "%.2f%/n",'$MemFree/$MemTotal/*100'}'`MemFreeS=`awk 'BEGIN{printf "%.f",'$MemFree/$MemTotal/*100'}'`if [ $MemFreeS -lt 10 ]thenCritical="系统可用内存小于10%，实际可用内存为：$MemFreeB ,请处理。"status=0elif [ $MemFreeS -lt 20 ]thenWarning="系统可用内存小于20%，实际可用内存为：$MemFreeB ，请查看。"WarningT="内存报警"status=1elseecho "Mem OK"status=2fi}#监控分区空间大小DiskMonitorG () {#根分区DiskGB=`df -h | awk NR==2 | awk '{print $5}'`DiskGS=`df -h | awk NR==2 | awk '{print $5}' | awk -F% '{print $1}'`if [ $DiskGS -gt 90 ]thenCritical="根分区使用率超过90%，实际已使用 $DiskGB ,请处理。"status=0elif [ $DiskGS -gt 80 -a $DiskGS -lt 90 ]thenWarning="根分区使用率超过80%，实际已使用 $DiskGB , 请查看。"WarningT="根分区报警"status=1elseecho "DiskGB Ok"status=2fi}DiskMonitorA () {#应用分区ApplyB=`df -h | awk NR==4 | awk '{print $5}'`ApplyS=`df -h | awk NR==4 | awk '{print $5}' | awk -F% '{print $1}'`if [ $ApplyS -gt 90 ]thenCritical="应用分区使用率超过90%，实际已使用 $ApplyB ,请处理."status=0elif [ $ApplyS -gt 80 -a $ApplyS -lt 90 ]thenWarning="应用分区使用率超过80%，实际已使用 $ApplyB ，请查看。"WarningT="应用分区报警"status=1elseecho "Apply ok"status=2fi}#监控CPU负载CPULoad () {CPULoad1=`uptime | awk '{print $10}' | awk -F. '{print $1}'`CPULoad2=`uptime`if [ $CPULoad1 -gt 5 ]thenCritical="CPU负载过高，请即使处理。 $CPULoad2 "status=0elif [ $CPULoad1 -gt 3 -a $CPULoad1 -lt 5 ]thenWarning="CPU负载警告， $Warning "WarningT="CPU负载报警"status=1elseecho "CPU OK"status=2fi}#监控服务状态ServerMonitor () {#服务状态监控timeout=10makfails=2fails=0success=0while truedo/usr/bin/wget --timeout=$timeout --tries=1 http://192.168.20.84/ -q -O /dev/nullif [ $? -ne 0 ]thenlet fails=fails+1success=0elsefails=0let success=1fiif [ $success -ge 1 ]thenexit 0fiif [ $fails -ge 1 ]thenCritical="应用服务出现故障，请紧急处理！"echo $Critical | mutt -s "服务down" hao.lulu@chinaebi.comexit -1fidone}#发送报警短信、报警邮件for n in Usermonitor MemMonitor DiskMonitorG DiskMonitorA CPULoad ServerMonitordo$nif [ $status -eq 0 ]thencurl "http://172.20.36.118/app/tms.do?tranCode=TM0311&;content=$Critical"elif [ $status -eq 1 ]thencurl "http://172.20.36.118/app/tms.do?tranCode=TM0310&;title=$WarningT&content=Warning"elseecho "ok"fidone