Hi Bernard, Collectl provides two alternatives to make this happen. See http://collectl.sourceforge.net/Gexpr.html. I chose the method of supplementing the gmond data with the collectl data. Fairly straight forward. You can also run collectl alone on a server and feed the data to a centralized gmond collector and back to gmetad.
Steve -----Original Message----- From: Bernard Li [mailto:[email protected]] Sent: Friday, October 08, 2010 4:02 PM To: CHU, STEPHEN H (ATTSI) Cc: [email protected] Subject: Re: [Ganglia-general] Custom graphs only for specific Cluster Hi Steve: On Fri, Oct 8, 2010 at 12:03 PM, CHU, STEPHEN H (ATTSI) <[email protected]> wrote: > I have set up 3 different clusters all homed in to a gmetad server and > served by a webfrontend. One of the cluster is a Lustre file system with 6 > servers. To gather Lustre specific data I use collectl which supports > exporting Lustre data to Ganglia. Collectl is running on each of the Lustre > server alongside with gmond. Collectl feeds exported XML data to gmond UDP > port and the rrd data get delivered back to the gmetad server. I like to > display these data but they don't belong to any metrics defined. After > reading up on how to generate custom graphs, I have successfully created > graphs for them (keying on some existing metrics like bytes_in/bytes_out) > and they are displayed under the Lustre cluster page. However, when I select > the other clusters, they are also being "shown" with no graphs but with the > name of the custom graph report. That's understandable since they don't have > any of the Lustre data. Wouldn't it be more efficient if you simply port the Lustre metric collection code to gmond via C/Python modules and/or run collectl only on the hosts and send all the data to a collector gmond? That way you don't need to run both gmond and collectl on your hosts. Just my $0.02. Cheers, Bernard ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today. http://p.sf.net/sfu/beautyoftheweb _______________________________________________ Ganglia-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ganglia-general
