Monitor CPU, disk, and memory usage with the shell

Use the shell to monitor CPU, disk, memory usage, reach alert thresholds and email notifications

And with the task plan, you can get the alarm information in time

#!/bin/bash############################################## #Author: liuzhengwei - [email  Protected] #QQ: 1135960569#last modified: 2017-04-19 21:50#filename: jiankong.sh#description :  ############################################## #获取cpu使用率cpuUsage = ' Top -n 1 | awk  -F  ' [ %]+ '   ' nr==3 {print $2} ' #获取磁盘使用率data_name = '/dev/vda1 ' diskusage= ' df - h | grep  $data _name | awk -f  ' [ %]+ '   ' {print $5} ' logFile=/ tmp/jiankong.log# get memory situation mem_total= ' free -m | awk -f  ' [ :]+ '   ' NR==2{print  $2} ' mem_used= ' free -m | awk -f  ' [ :]+ '   ' nr==3{print $3} ' # Statistical memory Utilization mem_used_persent= ' awk  ' begin{printf  "%.0f\n", (' $mem _used '/' $mem _total ') *100} ' #获取报警时间now_time = ' date  ' +%f %t ' Function send_mail () {        mail  -s  "Monitoring Alarm"  [email&Nbsp;protected] < /tmp/jiankong.log}function check () {         if [[  "$cpuUsage"  > 80 ]] | |  [[  "$diskUsage"  > 80 ]] | |  [[  "$mem _used_persent"  > 80 ]];then                 echo  "Alarm Time: ${now_time}"  >  $logFile                 echo  " CPU Usage:${cpuusage}% -->  disk usage:${diskusage}% -->  memory usage: ${mem_used_persent}% "  >>  $logFile                  send_mail        fi}function main () {         check}main

This article is from the "burning Years of Passion" blog, please be sure to keep this source http://liuzhengwei521.blog.51cto.com/4855442/1917501

Monitor CPU, disk, and memory usage with the shell