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I am trying to use jconsole to retrieve some quick performance attributes of a running helidon app (4.0.0-M1 Helidon-MP). However I am not able to connect to the jvm. However jconsole is able to connect to other jvms.

I tried runing jconsole in administrator mode, but to no avail. What do I have to do to enable jconsole connections to Helidon apps?

Jens Mohrmann
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1 Answers1

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this can be fixed as follows:

  • add src/main/resources/META-INF/helidon/serial-config.properties file with pattern=javax.management.**;java.lang.**;java.rmi.**;javax.security.auth.Subject
  • or add the following system property: -Dhelidon.serialFilter.pattern=javax.management.**;java.lang.**;java.rmi.**;javax.security.auth.Subject;!*

Helidon enforces JEP-290 by disabling ALL deserialization. If a components or application requires it, is must be explicitly enabled. Please check class io.helidon.common.SerializationConfig that is responsible for this.

Tomas Langer
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