Swap Memory Check Automatic Script

What is the Most Important for Our Server?
I think it is the Memory Monitoring!
If all of the physical memory space used by programs, the Kernel begin to use Swap to allocate more memory.
If all of the swap already in use, the server (or computer) will hang and needs to reboot (Dangerous for productions Servers)
I share the most important part of my Simple script to prevent high swap memory usage.
I hope this helps!

Just put it in Crontab every 5 minutes to runs automatically in the background.
Cheers!!!

#Start Script
#!/bin/bash


SERVER=`hostname`


DATE=`date +%Y%m%d_%H%M`


swap=`free -m | awk -F" " '{print $3}' | tail -1`
echo "SWAP Used NOW = $swap";
limit=1000


if [ $swap -gt $limit ];


then


        #This is the Actions if Limit reached
        /etc/init.d/httpd reload;


        echo "$SERVER Swap Memory Warning!";


else


        echo "Swap still safe now.."


fi


#End of Script


Save the script anywhere in the Server, but don't forget to add "chmod +x <your_script>.sh"

Author : IndraSusanto

If you found this script useful, dont forget to leave some comments :)