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  1. JDK
  2. JDK-8046778

Better error messages when starting JMX agent via attach or jcmd

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        When starting the JMX agent via jcmd, the error messages you get are very cryptic:

        $ build/macosx-x86_64-normal-server-release/jdk/bin/jcmd Sleeper ManagementAgent.start
        9979:
        java.lang.RuntimeException: Invalid option specified

        $ build/macosx-x86_64-normal-server-release/jdk/bin/jcmd Sleeper ManagementAgent.start config.file=apa
        10024:
        java.lang.RuntimeException: Config file not found

        $ build/macosx-x86_64-normal-server-release/jdk/bin/jcmd Sleeper ManagementAgent.start jmxremote.port=5000
        9979:
        sun.management.AgentConfigurationError


        This is just because errors are note propagated correctly to the jcmd. With some small changes the above can look like this:

        $ build/macosx-x86_64-normal-server-release/jdk/bin/jcmd Sleeper ManagementAgent.start
        89673:
        java.lang.RuntimeException: Invalid com.sun.management.jmxremote.port number: No port specified

        $ build/macosx-x86_64-normal-server-release/jdk/bin/jcmd Sleeper ManagementAgent.start config.file=apa
        89673:
        java.lang.RuntimeException: Config file not found: apa

        $ build/macosx-x86_64-normal-server-release/jdk/bin/jcmd Sleeper ManagementAgent.start jmxremote.port=5000
        89673:
        java.lang.RuntimeException: Password file not found: /Users/staffan/mercurial/jdk9-hs-rt/build/macosx-x86_64-normal-server-release/jdk/lib/management/jmxremote.password

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                • Assignee:
                  sla Staffan Larsen (Inactive)
                  Reporter:
                  sla Staffan Larsen (Inactive)
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                    Updated:
                    Resolved: