Monitor CF using Nagios: a useful new way
Note: This blog post is from 2009. Some content may be outdated--though not necessarily. Same with links and subsequent comments from myself or others. Corrections are welcome, in the comments. And I may revise the content as necessary.Nagios is an open source (Linux based) monitoring tool that many organizations use to monitor their IT infrastructure. Here are two resources to help you monitor it with CF, one of which is a new way that may give additional benefit to those already doing Nagios monitoring of CF.
Basic CF Monitoring in Nagios
First let me share that if you've not explored monitoring CF with Nagios at all, here's at least one blog entry from 2005 discussing that. (A more recent one, at http://profec.net/2009/01/12/monitoring-coldfusion-with-nagios/, which I used to list here, is no longer responding, nor could I find it on archive.org.)
Of course, you can easily use Nagios primarily to report whether CF's up or down, but you can also monitor basic statistics such as are provided via CFSTAT (also available on Windows via Perfmon, which also exposes generic stats about all processes), as demonstrated in that blog entry.
But you may have noticed that, if you run the Multiserver (multiple instances) version of CF, those CFSTAT and Windows Perfmon Stats aren't available on that version of CF.
So what to do if you wanted to monitor more about what's going on inside of CF?
FusionReactor Nagios Plug-in
If you're running FusionReactor Enterprise, you can now get that additional information via the free FusionReactor Nagios Plugin. It's a perl app that when implemented will expose certain key statistics in a way that Nagio can process them (and some are things that CFSTAT and the CF Permon stats don't report):
- Count of current running requests, and total count of all requests run
- Count of request queued by FusionReactor
- Average request runtime (since server start), and Recent request runtime (in past 60s, by default)
- Count of recent slow pages
- Memory free in bytes and percentage
- Memory Total and Max
- Instance and System CPU Use percentage
- Count of recently completed JDBC requests
Note that this is technically community-contributed feature (from an Intergral employee, David Stockton), not a supported feature.
If you're running or are interested in FusionReactor Enterprise, check it out.
