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deviationist/disk-monitor.sh

Last active November 26, 2023 03:41
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Disk usage monitor for a single disk that posts to Slack if the usage percent surpasses a configurable threshold.
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disk-monitor.sh
#!/bin/bash
PERCENT_THRESHOLD=95
DISK_NAME=/dev/sda1
DISK_PERCENTAGE=$(df -hl $DISK_NAME | sed 1d | awk 'BEGIN{print "Use%"} {percent+=$5;} END{print percent}' | column -t | sed 1d);
if (( $PERCENT_THRESHOLD <= $DISK_PERCENTAGE )); then
curl -X POST -H 'Content-type: application/json' --data "{\"text\":\"Disk is almost full - $DISK_PERCENTAGE% used on $DISK_NAME. Threshold set to $PERCENT_THRESHOLD%.\"}" https://hooks.slack.com/services/XXXXXXXXX/XXXXXXXXX/XXXXXXXXXXXXXXXXXXXXXXXXX
fi
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deviationist commented Feb 23, 2023 •
edited
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  1. Set the disk usage percent threshold (line 2)
  2. Set disk path (run command "df" to find the correct disk path) (line 3)
  3. Insert your own Slack cURL call / update the Slack URL (line 6)
  4. Add the path of this script to your crontab at desired interval. This example will run every 3rd hour: "0 */3 * * * /path/to/your/disk-monitor.sh". Use crontab.guru to generate an interval that suits you.
  5. Et voilà!

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