You can check check_ganglia_metric written in Python https://github.com/mconigliaro/check_ganglia_metric
for example how you can parse the XML.Alternatively, Ganglia Web 3.3.0+ include Nagios integration which does what you are looking for e.g.
Check multiple metrics on a range of hosts defined with a regular expression Use this check to check a single or multiple metrics on a range of hosts defined using a regular expression. This is useful when you want to get a single alert if particular metric is critical across a number of hosts. http://sourceforge.net/apps/trac/ganglia/wiki/ganglia_nagios_integration Vladimir On Thu, 10 May 2012, Joe Borġ wrote:
As far as I'm aware, ganglia outputs its data as XML that the web page then picks up and processes. What I'm trying to do is write some python that looks at every node in a cluster group and alerts if any of the metrics are over a threshold (easy enough) if I can get hold of ganglia's output. Can anyone point me in this direction please? Regards, Joseph David Borġ http://www.jdborg.com
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