References
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[5] http://www.zenoss.com/about/news/zenoss_core_2_5_0.html http://blogs.the451group.com/opensource/2010/04/07/ cloud-monitoring-keeps-open-source-in-cool-crowd/ http://www.soa.si/2011/07/25/monitoring-eucalyptus-cloudwith-nagios-and-ganglia/ http://searchcloudcomputing.techtarget.com/report/Cloudmanagement-tools-guide-for-beginners http://en.wikipedia.org/wiki/Comparison_of_network_ monitoring_systems