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Last, inside your IDE, connect to the remote application (the default port to connect to is 5005).

This option works fine when we have to debug a project deployed top of Apache Karaf. Nervertheless, you will be blocked if you would like to debug the server Karaf. In this case, you can change the following parameter suspend=y in the karaf.bat script file. That will cause the JVM to pause just before running main() until you attach a debugger then it will resume the execution. This way you can set
your breakpoints anywhere in the code and you should hit them no matter how early in the startup they are

set DEFAULT_JAVA_DEBUG_OPTS=-Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005

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Profiling

YourKit

You need a few steps to be able to profile Karaf using YourKit.
The first one is to edit the etc/config.properties configuration file and add the following property:

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