脚本监控当前服务器负载情况

#!/bin/bash

#触发阈值发邮件还没有写.

export PATH

export LANG=zh_CN.UTF-8

#先配置好mailx邮箱账号密码:

#cat>/etc/mail.rc<<"EOF"

#set sendcharsets=iso-8859-1,utf-8

#set from=xxx@163.com

#set smtp=smtp.163.com

#set smtp-auth-user=xx@163.com

#set smtp-auth-password=xxx

#set smtp-auth=login

#EOF

readonly times=$(date +%Y"/"%m"/"%d" "%k":"%M)

readonly machine="192.168.1.10"

function top_check(){

   runup=$(top -n 1|grep user|awk -F '[, ]+' '{print $5}')

   echo "$times   $machine   运行多久: $runup 分钟"

   userd=$(top -n 1|grep user|awk -F '[, ]+' '{print $7}')

   echo "$times   $machine   当前在线用户数: $userd"

   load1=$(top -n 1|grep user|awk -F '[, ]+' '{print $11}')

   echo "$times   $machine   1分钟CPU负载: $load1"

   load5=$(top -n 1|grep user|awk -F '[, ]+' '{print $12}')

   echo "$times   $machine   5分钟CPU负载: $load5"

   load15=$(top -b -n 1|grep user|awk '{print $NF}')

   echo "$times   $machine   15分钟CPU负载: $load15"

   cpuus=$(top -n 1|grep Cpu|awk -F "," '{print $1}'|awk -F " " '{print $2}')

   echo "$times   $machine   用户空间占用CPU百分比: $cpuus"

   cpusy=$(top -n 1|grep Cpu|awk -F "," '{print $2}'|awk -F " " '{print $2}')

   echo "$times   $machine    内核空间占用CPU百分比: $cpusy"

   cpuni=$(top -n 1|grep Cpu|awk -F "," '{print $3}'|awk -F " " '{print $2}')

   echo "$times   $machine    改变过优先级的进程占用CPU的百分比: $cpuni"

   cpuid=$(top -n 1|grep Cpu|awk -F "," '{print $4}'|awk -F " " '{print $2}')

   echo "$times   $machine    空闲CPU百分比: $cpuid"

   cpuwa=$(top -n 1|grep Cpu|awk -F "," '{print $5}'|awk -F " " '{print $2}')

   echo "$times   $machine    I/O等待占用CPU的百分比: $cpuwa"

   cpuhi=$(top -n 1|grep Cpu|awk -F "," '{print $6}'|awk -F " " '{print $2}')

   echo "$times   $machine    硬中断占用CPU的百分比: $cpuhi"

   cpusi=$(top -n 1|grep Cpu|awk -F "," '{print $7}'|awk -F " " '{print $2}')

   echo "$times   $machine    软中断占用CPU的百分比: $cpusi"

   cpust=$(top -n 1|grep Cpu|awk -F "," '{print $8}'|awk -F " " '{print $2}')

   echo "$times   $machine    虚拟 CPU 等待实际 CPU 的时间的百分比: $cpust"

   #内存部分M为单位

   memtotal=$(($(top -n 1|grep buff/cache|awk -F '[, ]+' '{print $4}') / 1024))

   echo "$times   $machine   内存总共: $memtotal M"

   memfree=$(($(top -n 1|grep buff/cache|awk -F '[, ]+' '{print $7}') / 1024))

   echo "$times   $machine   空闲内存: $memfree M"

   memused=$(($(top -n 1|grep buff/cache|awk -F '[, ]+' '{print $10}') / 1024))

   echo "$times   $machine   已使用内存: $memused M"

   membuff=$(($(top -n 1|grep buff/cache|awk -F '[, ]+' '{print $13}') / 1024))

   echo "$times   $machine   内存buff/cache: $membuff M"

   #swap部分M

   swaptotal=$(($(top -n 1|grep avail|awk -F '[, ]+' '{print $3}') / 1024))

   echo "$times   $machine   swap总共: $swaptotal M"

   swapfree=$(($(top -n 1|grep avail|awk -F '[, ]+' '{print $6}') / 1024))

   echo "$times   $machine   swap空闲: $swaptotal M"

   swapused=$(($(top -n 1|grep avail|awk -F '[, ]+' '{print $9}') / 1024))

   echo "$times   $machine   swap已使用: $swapused M"

   swapavail=$(($(top -n 1|grep avail|awk -F '[, ]+' '{print $11}') / 1024))

   echo "$times   $machine   swap内存avail Mem: $swapavail M"

}

files="/tmp/top.logs"

top_check >$files

dos2unix -k $files

mailx -s "$machine" xxx@vip.qq.com < $files