[observability] Improve observability using MBeans

[vityaman]

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[vityaman]

Connect to docker container bash

sudo docker ps
sudo docker exec -it <container-id> sh

[vityaman]

https://stackoverflow.com/questions/35108868/how-do-i-attach-visualvm-to-a-simple-java-process-running-in-a-docker-container

[vityaman]

How to connect to wildfly inside a docker container:
https://dev.to/kgoedert/monitoring-wildfly-inside-docker-14c5

1. Download the same wildfly as you have inside docker from https://www.wildfly.org/downloads/ to your desktop
2. Go to wildfly directory and run bin/jconsole.sh
3. Type service:jmx:remote+http://localhost:9990/, login admin, password admin

Also if you want to use VisualVM:

sudo apt-get install visualvm
visualvm --cp:a $WILDFLY_HOME/bin/client/jboss-client.jar

[vityaman]

Facts about MXBeans:

• Can be a nested class
• MXBean interface can't extend other interfaces
• Name of implementation does not matter