check_rsnapshot.php

This is the most comprehensive plugin available for Nagios. It will verify backups made via the rsnapshot utility through Nagios using a number of tests:

* **minfiles** – checks the number of files in a snapshot against a minimum expected number;
* **minsize** – checks the size of a snapshot against a minimum expected size;
* **log** – parses the rsnapshot log to ensure the most recent runs for each retention period completed successfully;
* **timestamp** – checks for files created server side containing a timestamp and thus ensuring snapshots are succeedin;
* **rotation** – checks that retention directories are being rotated; and
* **dir-creation** – checks that retention directories are being created.