Use the Below and code and save it in your root folder and add a cron to run in your server.
Replace [email protected] to your email-id and remove # before the email-id.
#!/bin/bash
#This script will send mail alert if load is high in server with w,pstree,mysqladmin results
#Enter The Email address
#email="[email protected]"
#Enter the Load Average
critical_load=15
current_load=`cat /proc/loadavg |awk '{print $2 }' |cut -d"." -f1 `
if [ $current_load -ge $critical_load=15 ]
then
cd /tmp
touch load.txt
#Enter the Text that you needs to dispaly on mail
echo "Please check the Server and reduce the Load" >> /tmp/load.txt
echo
echo "LOAD STATUS RUN ON" `date` >> /tmp/load.txt
echo "*******************" >> /tmp/load.txt
echo "*******************" >> /tmp/load.txt
echo " W Results " >> /tmp/load.txt
w >> /tmp/load.txt
echo "*******************" >> /tmp/load.txt
echo "*******************" >> /tmp/load.txt
echo "PSTREE Results" >> /tmp/load.txt
echo "*******************" >> /tmp/load.txt
pstree -apu >> /tmp/load.txt
echo "*******************" >> /tmp/load.txt
echo "*******************" >> /tmp/load.txt
echo "MYSQLADMIN Results" >> /tmp/load.txt
echo "*******************" >> /tmp/load.txt
mysqladmin proc >> /tmp/load.txt
echo "*******************" >> /tmp/load.txt
echo "*******************" >> /tmp/load.txt
echo "NETSTAT RESULTS (FOR CHKING DDOS ATTACK..10 HIGH HTTP CONNECTIONS ) " >>/tmp/load.txt
echo >>/load.txt
netstat -plan |grep :80 | awk '{print $5}' |cut -d: -f1 |sort |uniq -c |sort -n |tail -10 >>/tmp/load.txt
echo "*******************" >> /tmp/load.txt
echo "*******************" >> /tmp/load.txt
mail -s "!!!Urgent HIGH LOAD Avg=$current_load in $HOSTNAME " $email < /tmp/load.txt
>/tmp/load.txt
fi