disk-alert.sh

#!/bin/sh

# alert level in percent
ALERT=90
TEAMS_WEBHOOK_URL="https://outlook.office.com/<webhook>"
df -H | grep -vE '^Filesystem|tmpfs|cdrom' | awk '{ print $5 " " $1 }' | grep "/dev/[a-z][a-z][a-z][0-9]\|:" | while read output;
do
  #echo $output
  usepercent=$(echo $output | awk '{ print $1}' | cut -d'%' -f1  )
  filesystem=$(echo $output | awk '{ print $2 }' )
  if [ $usepercent -ge $ALERT ]; then
    curl -H 'Content-type: application/json' -d '{"text":"Running out of space '"$filesystem ($usepercent%)"' on server '"$(hostname)"'"}' $TEAMS_WEBHOOK_URL
  fi
done