Linux Script To Check Service

linux script to check if a service is running and start it, if it’s stopped

We will use this script to check squid service is runing or not if not runing it will start it automatically and send a mail to admin. we will run this script every 20 min using cron.

you need to create a directory so we can log things into that directory.

#mkdir  /var/log/scripts

#cd  /scripts
#vi service.sh

#!/bin/bash
service=squid
log=/var/log/scripts/servicesh.log
date=$(date)

if (( $(ps -ef | grep -v grep | grep $service | wc -l) > 0 ))
then
echo "$service is running!!! $date" > $log
else
echo "$service is not runing starting automatically $date" >> $log
/etc/init.d/$service start >> $log
mail -r proxy-1@ittables.com -s "Squid Service Status $date" "admin@ittables.com" < $log
fi


save the file and exit

#chmod +x service.sh

#crontab  -e

*/20  *  *  *  *  /scripts/service.sh

save and exit

Bow the above script will run in every 20min

Note:- to mail stuff postfix or sendmail should be configured properly.