monitoring

Monitoring Your Bacula Backups With Xymon

In a recent post to the Bacula mailing list, someone had asked if there was a way to alert their Nagios network monitoring server when their Bacula backup server was waiting on an operator to change a tape.

At Reverse Polarity, we have been installing and supporting Xymon for years - as far back as when it began as plug-in to the Big Brother network monitoring server.

Xymon is an open-source network monitoring program with an easy to use web interface. Since someone was asking about a Nagios plugin to monitor their Bacula server it only seemed logical that someone might want a way to monitor Bacula with a Xymon server.

As it turns out, someone DID want a Xymon monitor for Bacula - Us!

As luck would have it we had already written a Xymon script to monitor our Bacula server and alert if a backup job had failed. All our script needed was some minor additional features and some finishing touches for it to be ready to be released for others to use.

I am excited to say that the script, which is available HERE was announced on the Bacula users mailing list and the Xymon users mailing list on June 4th, 2010 and within 10 minutes was being downloaded and implemented by others!

posted from my Nokia N900

Monitoring Temperature with Open-Source Software

Recently, while looking for a reasonably priced temperature sensor device that we could integrate into a Xymon monitoring server to monitor our server room as well as our clients' server rooms, a Google search turned up ControlByWeb.com and their 4-sensor/2-relay temperature module. It met all of our requirements.

This monitor is not only inexpensive, but it is also very simple to set up. And since the temperature readings are readily available to a web browser, it is just as easy to integrate into a Xymon monitoring server using some simple shell scripting and a great utility called "curl" to pull the state.xml web page that contains the temperature readings.

Take a look at http://www.revpol.com/xymon_cbw_temp_script to see the Xymon integration instructions and the actual bash shell script you may use to monitor, log, and graph up to four temperature reading from one of these devices.

To learn more about Xymon and some of the other Open-Source tools we use and support on our network and our clients' networks, see our System Monitoring page .

posted from my Nokia N900