Hi JB, I've tested the new 2.8.0 decanter release and I'm pleased to say your fix for https://issues.apache.org/jira/browse/KARAF-7154 works great. Thanks for that !
However I couldn't figure out from the pull request what changes you made related to my second suggestion, to better identify from which MBean the properties are (or as you put it 'allow user to define the "exported" event properties by configuration'). Can you please explain how I can achieve this ? Kind regards, Steven On Wed, May 12, 2021 at 6:57 PM Steven Huypens <[email protected]> wrote: > Hi Jean-Baptist, > > 1) You mention the Prometheus appender only exposes the numeric metrics. I > believe it would be a minor but very useful addition to also expose the > Objects in a CompositeDataSupport. For example java.lang.memory has a > HeapMemoryUsage-object which contains 4 values (committed, init, max & > used) that could easily be exposed as well. > > 2) I also would like to suggest to prefix the outputted name of a property > with something that really identifies the MBean, eg. : > > java_lang_Memory_HeapMemoryUsage_committed > java_lang_Memory_HeapMemoryUsage_init > java_lang_Memory_HeapMemoryUsage_max > java_lang_Memory_HeapMemoryUsage_used > > Currently MBeans having the same properties will have their values > overridden in the output. > > Kind regards, > Steven > > On Mon, May 3, 2021 at 6:14 AM Jean-Baptiste Onofre <[email protected]> > wrote: > >> Hi Daniel, >> >> JMX collector polls all MBeans attributes. However Prometheus appender >> only expose metrics (numeric) on the Prometheus servlet: >> >> http://localhost:8181/decanter/prometheus >> >> As the generated JMX JSON is "more" than just numeric, it’s possible that >> you don’t have the metrics. >> >> You can check the JMX JSON using another kind of appender (like log >> appender or elasticsearch). >> I can add kind of "json introspection" on the Prometheus appender to >> "force" some JSON fields as metrics (gauge). >> >> Regards >> JB >> >> > Le 2 mai 2021 à 22:24, Daniel Las <[email protected]> a écrit : >> > >> > Hi, >> > >> > I installed Decanter 2.7.0 on Karaf 4.2.11 with JMX collector and >> Prometheus appender features. I uncommented >> "object.name.system=java.lang:*" in >> org.apache.karaf.decanter.collector.jmx-local.cfg. >> > >> > Where can I find JVM metrics like current heap memory usage? >> > >> > Regards >> > -- >> > Daniel Łaś >> > >> >>
