分享一个自己写的比较牛的linux服务器自动监控程序

#!/bin/bash
#version0.3 使用top执行后的文件分析，对系统的影响更小
#程序目的:监控系统的cpu、内存、存储、网络的健康状态
#编写者:Lion Lan 13071039067
#编写时间:2016/11/9

#执行下环境变量
source /home/`whoami`/.bash_profile

#脚本部署的目录
dir=/home/lion/monitor

#获取到的top执行后的文件
topfile=$dir/top.txt

#最后输出记录的文件
logfile=$dir/monitorlog.txt

#主机名
serverName=`hostname`
#当前的日期
currDate=`date +%F`
#当前的时间
currTime=`date +%R`


    top -bn 1 > $topfile
		
		declare taskTotal
		declare taskRunning
		declare taskSleeping
		declare taskStopped
		declare taskZombie
		
		declare cpuUs
		declare cpuSy
		declare cpuNi
		declare cpuId
		declare cpuWa
		declare cpuHi
		declare cpuSi
		declare cpuSt
		
		declare memTotal
		declare memUsed
		declare memFree
		declare memBuffers
		declare swapTotal
		declare swapUsed
		declare swapFree
		declare swapCached
		
		#获取到top文件头的所有的参数
		
		#进程的有关参数，获取到的字符串是数字（字符串类型）
		taskTotal=`cat $topfile| grep -i tasks | head -1 | awk -F" " '{print $2}'`
		taskRunning=`cat $topfile | grep -i tasks| head -1|awk -F" " '{print $4}'`
		taskSleeping=`cat $topfile | grep -i tasks| head -1|awk -F" " '{print $6}'`
		taskStopped=`cat $topfile | grep -i tasks| head -1|awk -F" " '{print $8}'`
		taskZombie=`cat $topfile | grep -i tasks| head -1|awk -F" " '{print $10}'`
		
		#注意：有关cpu的参数获取到的值都带有%
		cpuUs=`cat $topfile | grep -i cpu| head -1|awk -F" " '{print $2}'|awk -F"us" '{print $1}'`
		cpuSy=`cat $topfile | grep -i cpu| head -1|awk -F" " '{print $3}'|awk -F"sy" '{print $1}'`
		cpuNi=`cat $topfile | grep -i cpu| head -1|awk -F" " '{print $4}'|awk -F"ni" '{print $1}'`
		cpuId=`cat $topfile | grep -i cpu| head -1|awk -F" " '{print $5}'|awk -F"id" '{print $1}'`
		cpuWa=`cat $topfile | grep -i cpu| head -1|awk -F" " '{print $6}'|awk -F"wa" '{print $1}'`
		cpuHi=`cat $topfile | grep -i cpu| head -1|awk -F" " '{print $7}'|awk -F"hi" '{print $1}'`
		cpuSi=`cat $topfile | grep -i cpu| head -1|awk -F" " '{print $8}'|awk -F"si" '{print $1}'`
		cpuSt=`cat $topfile | grep -i cpu| head -1|awk -F" " '{print $9}'|awk -F"st" '{print $1}'`
		
		#注意：有关memory的参数获取到的值都带有k
		memTotal=`cat $topfile |grep -i mem| head -1|awk -F" " '{print $2}'`
		memUsed=`cat $topfile |grep -i mem| head -1|awk -F" " '{print $4}'`
		memFree=`cat $topfile |grep -i mem| head -1|awk -F" " '{print $6}'`
		memBuffers=`cat $topfile |grep -i mem| head -1|awk -F" " '{print $8}'`
		
		#注意：有关swap的参数获取到的值都带有k
		swapTotal=`cat $topfile| grep -i swap|head -1|awk -F" " '{print $2}'`
		swapUsed=`cat $topfile| grep -i swap|head -1|awk -F" " '{print $4}'`
		swapFree=`cat $topfile| grep -i swap|head -1|awk -F" " '{print $6}'`
		swapCached=`cat $topfile| grep -i swap|head -1|awk -F" " '{print $8}'`
			
		#内存的使用率
        declare currentMemRate
        function getMemoryRate()
        {
            #系统的全部内存（K）
            totalMemory=`echo $memTotal| sed 's/k//g'`
                                         
            #当前已经使用的内存（K）
            currentMemory=`echo $memUsed| sed 's/k//g'`
                                         
            #系统当前的内存使用率
            currentMemRate=`echo "scale=4;$currentMemory/$totalMemory" | bc | awk '{printf "%.4f",$0}'`
        }
 
        getMemoryRate
		
		recordJson="{\"hostname\":\"$serverName\",
					\"date\":\"$currDate\",
					\"time\":\"$currTime\",
					\"taskTotal\":\"$taskTotal\",
					\"taskRunning\":\"$taskTotal\",
					\"taskSleeping\":\"$taskSleeping\",
					\"taskStopped\":\"$taskStopped\",
					\"taskZombie\":\"$taskZombie\",
					\"cpuUs\":\"$cpuUs\",
					\"cpuSy\":\"$cpuSy\",
					\"cpuNi\":\"$cpuNi\",
					\"cpuId\":\"$cpuId\",
					\"cpuWa\":\"$cpuWa\",
					\"cpuHi\":\"$cpuHi\",
					\"cpuSi\":\"$cpuSi\",
					\"cpuSt\":\"$cpuSt\",
					\"memTotal\":\"$memTotal\",
					\"memUsed\":\"$memUsed\",
					\"memFree\":\"$memFree\",
					\"memBuffers\":\"$memBuffers\",
					\"swapTotal\":\"$swapTotal\",
					\"swapUsed\":\"$swapUsed\",
					\"swapFree\":\"$swapFree\",
					\"swapCached\":\"$swapCached\",
					\"currentMemRate\":\"$currentMemRate\"
					}"
					
		echo $recordJson | sed 's/[ ]//g' >> $logfile
		

最后得到的是json的字符串，后续更新。