Collecting metrics with Tomcat monitoring tools

In this series of posts, we discuss how to monitor Apache Tomcat using Java Management Extensions (JMX) and other tools. Part 1 covered key metrics exposed through JMX, while this post delves into collecting and querying that data. We explore using Tomcat Manager, enabling remote connections for JMX viewing metrics with other monitoring platforms like JConsole and JavaMelody, and customizing Tomcat server and access logs. By setting a few simple permissions, administrators can immediately begin viewing Tomcat and JVM data with Tomcat Manager. Once remote connections for JMX are enabled, tools like JConsole and JavaMelody can be used to monitor Tomcat data with simple graphical interfaces.