#!/bin/sh

# Check disk space
CURRENT=$(df / --output=pcent | tail --lines=1 | cut --delimiter='%' --field=1)
THRESHOLD=90
ADMIN="root@{{ ansible_domain }}"
SUBJECT="[Disk Space Alert] The free space on {{ ansible_fqdn }} is critically low"
MESSAGE=

if [ "$CURRENT" -gt "$THRESHOLD" ]; then
  mail -s "$SUBJECT" "$ADMIN" << EOF
Your root partition remaining free space is critically low. Used: $CURRENT%
EOF
fi