Definitely check out Merlin - through configuration you can have Nagios instances communicate events with each other using a few types of relationships and you can then serialize the data from an instance to a database for either using their custom UI or making one of your own. <a href="http://www.op5.org/community/plugin-inventory/op5-projects/merlin">http://www.op5.org/community/plugin-inventory/op5-projects/merlin</a> When we used it back in early 2010 it was not quite ready with regards to event distribution but I would think it is more mature by now - definitely worth spending some proof of concept time on to explore as an option. We have been using the database serialization portion of Merlin for the last 1.5 years, we have made mods for it to meet our purposes (hope to share some of that code soon on our github account - one cool thing we added was threaded MySQL connections from Merlind to the database which increased throughput tremendously). - Max