This system is used to monitor the current status of web-based resources.
In simple terms, you need to setup various URLs to test important elements of your site, such as the database, file server, etc etc. Then point this system at each of those URLs, and it will notify you if something goes wrong.
The source code is hosted on Bitbucket at https://bitbucket.org/paulh/djamon/.
Note
It relies on a cron job to look for the URLs. At the moment it checks every minute during work time, and every 5 minutes outside of work time. It only records an ‘outage’ when any one element is still not available after 3 attempts.