shell-script-to-monitor-memory-usage-on-linux

Monitor CPU utilization, Memory utilization, swap utilization and disk space utilization when they reach the threshold, send an email to the devOps engineer

HOW TO SET IT UP?

• Run sudo nano check-vps-memory-usage.sh in terminal and paste in the shell script code
• Run chmod 755 check-vps-memory-usage.sh to give a full permissions to the shell script
• To execute it, run ./check-vps-memory-usage.sh in terminal. When the threshold that you set in code has reached, you should get an email. For my side I did set 45% of the usage, you can tweak it to your needs.
• Instead of doing this manually, we can automate this via crontab: Run crontab -e and then put in this line to run cronjob every five minutes: */5 * * * * /bin/bash check-vps-memory-usage.sh