This document describes how to set up and enable Hyperic HQ for monitoring on Ubuntu and Tomcat. The resulting system provides a comprehensive, web-based Systems Management Software. It's the next stage of classical monitoring and able to manage all kinds of operating systems, web servers, application servers and database servers. The install comes prepared to monitor almost 70 different technologies natively and provides many detailed features. For brevity sake, I won't list all of them here. Hyperic HQ is available as an open source distribution licensed under the GPL v2.
Download the software from http://www.hyperic.com/downloads/. The software can also be downloaded from Sourceforge, however this location is easier because it provides an easy UI to selecting the right packages for the operating systems you are going to manage.