[users@httpd] Monitoring web cluster performance

[Peter Phaal <pe...@gmail.com>]

Hi All,

Anyone using Ganglia to monitor their servers might be interested to
know that Ganglia 3.3 now includes support for mod-sflow, providing a
great way to monitor the health of an Apache cluster - not just HTTP
performance, but also the CPU, memory, disk and network I/O. If you
are using Tomcat for the application tier, the SFlowValve exports HTTP
and JVM metrics. If you are using a Memcached cluster for caching,
there is an sFlow agent available.

For more information, see:

http://blog.sflow.com/2012/02/ganglia-33-released.html

There is also a solution for Graphite:

http://blog.sflow.com/2012/01/graphite.html

The following case study from Tagged.com, a large social networking
site, describes some of the operational benefits of using sFlow for
monitoring:

http://blog.tagged.com/2011/11/host-based-sflow-the-drop-in-cloud-friendly-monitoring-standard/

Peter

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