When a Tomcat Monitor collector is started as part of a job, it automatically collects some statistics from the Tomcat server defined in the Target Parameters. In order to avoid storing huge amount of statistics, Web Modules (and their own Servlets) to monitor have to be specified in the collector editor.
The statistics collected by default are :
The only components that need to be specified to be monitored are :
To select additional components to monitor:
Note : if some previously selected components do NOT exist on the Tomcat target (because they were removed or because the target has changed since collector definition), a red cross on their icon makes them visible.
On the screenshot below, the //localhost/jmx-html Web Module component does not exist on the Tomcat server target :
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