Server load monitoring script

Increasing the server load will cause serious issues like downtime & service outage. Here is a simple bash script to monitor the server load so you can aware about load on your servers.

server load monitoring script

Step1. Create file /root/load.sh

Add the following script on the file

#!/bin/bash
trigger=10.00
load=`cat /proc/loadavg | awk '{print $1}'`
response=`echo | awk -v T=$trigger -v L=$load 'BEGIN{if ( L > T){ print "greater"}}'`
if [[ $response = "greater" ]]
then
sar -q | mail -s"High load on `hostname` - [ $load ]" [email protected]
fi

In this script,it will notify you via mail, if the server load went above 10.

chmod 755 /root/load.sh

If you would like to add it as cron

crontab -e

5 * * * * /root/load.sh

FYI : You can adjust the trigger value as you like. Change the mail account name in the script.