Maven spring boot run debug with arguments

The parameter name has to be prefixed with spring-boot. as in -Dspring-boot.run.jvmArgument

The Spring Boot documentation provided me the solution as I'm running Spring Boot 2.0.3

mvn spring-boot:run -Dspring-boot.run.jvmArguments="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005"

The behavior and the change you notice is happening because you started using the jvmArguments option:

JVM arguments that should be associated with the forked process used to run the application. On command line, make sure to wrap multiple values between quotes.

By default, when using it, the Spring Boot Maven plugin will also fork its execution, as described by the fork option:

Flag to indicate if the run processes should be forked. By default process forking is only used if an agent or jvmArguments are specified.

Hence, the usage of jvmArguments also activated the fork mode of the plugin execution. By forking, you are actually not picking up the others -D arguments passed from command line.

Solution: if you want to use the jvmArguments, then pass all of the required arguments to it.

mvn spring-boot:run -Drun.jvmArguments="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=8787 -Dserver.port=9090 -Dpath.to.config.dir=/var/data/my/config/dir"

-- Edit 22/09/2020 Check also the other answer from @Stephane to complent this answer (prefix of parameters)