monitor disk usage

ansible/inventory/group_vars/debops_all_hosts/cron.yml

@@ -0,0 +1,25 @@
+---
+
+cron__crontab_jobs:
+
+  'renew-cert':
+    special_time: 'daily'
+    job: '/usr/bin/certbot renew --standalone >> /var/log/le-renew.log'
+
+  'check-disk-space':
+    special_time: 'hourly'
+    job: '/usr/local/lib/check-disk-space'
+
+    custom_files:
+
+      - dest: '/usr/local/lib/check-disk-space'
+        content: |
+          #!/bin/bash
+          CURRENT=$(df / | grep / | awk '{ print $5}' | sed 's/%//g')
+          THRESHOLD=80
+
+          if [ "$CURRENT" -gt "$THRESHOLD" ] ; then
+              mail -s "Disk Space $(hostname).bij1.net" log@bij1.org << EOF
+          Used disk: $CURRENT%
+          EOF
+          fi