How to Email alert on disk space outage

    How to enable Email alert on disk space outage - If you are running servers like vicidial where the disk outage is a major issue while doing recordings which causes serious issue like DB crash , then this article is for your. where you will be get email alert once disk size reaches 80% or any value you set.

How to enable Email alert on disk space outage

Vicidial vs Disk full issue

           Most of times you will be facing MySQL database crash error due to my hard disk out of space , Because of huge call Recordings in vicidial or goautodial server.

    

    so i decided to have a alert via email when my harddisk space reaches 90% .
Below is the script i used to get email alert when my hard disk reaches 90% full
thanks to : https://www.cyberciti.biz/

Steps: Email alert once disk reaches 90% utilization

Step 1: Create a bash script file
    Create a bash script file using vi edit as shown below
vi /usr/share/diskspacealert.sh
note: i created a file in /usr/share folder, change according to your requirement

Step 2 : Bash Script

Copy past the below script in the file created in step 1
#!/bin/sh
# refered https://www.cyberciti.biz/tips/shell-script-to-watch-the-disk-space.html
# enter your mailed below for email alert
ADMIN="admin123@gmail.com"
# set alert level 90% is default
ALERT=90
df -HP | grep -vE '^Filesystem|tmpfs|cdrom' |
  while read partition size used free perc mnt ;
  do
    usep=$(echo $perc | tr -d '%' )
    if [ $usep -ge $ALERT ]; then
      echo "Running out of space \"$partition ($usep%)\" on $(hostname) as
  on $(date)" |
       mail -s "Alert: Almost out of disk space - $usep%" $ADMIN
    fi
  done 

Note *** change the admin123@gmail.com  to your mail id to which you want email alert

Step 3 : make the script executable

    Use chmod command and provide read,execute permission for all users
copy paste the below command
chmod 755 /usr/share/diskspacealert.sh
Step 4 : scheduling the scrip to run every day

Setup a cronjob daily morning or whatever time you wish.
type  crontab -e  in the linux shell

then add the below line
0 10 * * * /usr/share/diskspacealert.sh
this will run the script every day 10 am

Note : ***
you must have installed and configured 
Sendmail  
postfix
mailx

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1 Comments
  • gopi baskar
    gopi baskar April 4, 2022 at 11:17 AM

    Email alert when hard disk is full in linux

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