bundles/backup-client: add monitoring for backups

bundles/backup-client/files/check_backup_last_run

@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+
+from os.path import getmtime, isfile
+from sys import exit
+from time import time
+
+statusfile = '/var/tmp/backup.monitoring'
+if not isfile(statusfile):
+    print('Status file not found')
+    exit(3)
+
+mtime = getmtime(statusfile)
+now = time()
+
+if now-mtime > 60*60*24*2:
+    print('Status file is older than 2 days!')
+    exit(3)
+
+with open(statusfile, 'r') as f:
+    status = f.read().split()
+
+if status[0] == 'ok':
+    print('OK')
+    exit(0)
+elif status[0] == 'rsync_error':
+    print('rsync produced some errors, exit codes were: {}'.format(
+        ', '.join(status[1:])
+    ))
+    exit(2)
+else:
+    # garbage in file
+    print(' '.join(status))
+    exit(3)