Linux disk space alerts. Check your space and be responsible with your project. Take care of your space and don’t crack the project.
This is a very simple and handy tutorial about how to check the disk space every day and send the alert using Discord.
Prerequisite:
- discord webhook
Create the script
Create new file check-disk.sh:
#!/bin/bash
# This variable holds the usage disk space in percents
CURRENT=$(df / | grep / | awk '{ print $5}' | sed 's/%//g')
# The threshold where the alert will be sent. By default is 90, so when your server disk usage cross this border, the alerts will come on your discord.
THRESHOLD=90
# The url of the webhook. You can copy this value from Discord.
DISCORD_WEBHOOK_URL=<Your webhook url here without tags>
# The name of the project. You can put whatever you want here.
PROJECT_NAME="<project name without tags>"
# The url of the project.
PROJECT_URL=<project url without tags>
if [ "$CURRENT" -gt "$THRESHOLD" ] ; then
curl --location --request POST "$DISCORD_WEBHOOK_URL" \
--form "content=\":floppy_disk: The disk space for $PROJECT_NAME - $PROJECT_URL is critical.
Used: $CURRENT%.
Please clean up some space.\" " \
--form 'username="Disk Space Alert"'
fi
Make the script executable
Be sure that you have permissions to at least 755 set.
sudo chmod +x /home/ubuntu/check-disk.sh
!!! Use your full path the the file
Automate the script
crontab -e
and at the end of the file enter
0 6 * * * /bin/bash /home/ubuntu/check_disk.sh
!!! Use your full path the the file
