Discovery of JBoss instance fails with NullPointerException when JBoss ON agent and JBoss instance have been started by different users

Solution Verified - Updated -

Issue

  • Agent's auto discovery process is failing to discover JBoss AS instance

  • The following error is displayed in agent's log:

    ERROR [ResourceDiscoveryComponent.invoker.daemon-2] (org.rhq.plugins.jbossas.JBossASDiscoveryComponent)- Failed to process JBoss AS command line: [...]
java.lang.NullPointerException
        at org.rhq.core.system.ProcessInfo.getCurrentWorkingDirectory(ProcessInfo.java:373)
        at org.rhq.plugins.jbossas.helper.JBossInstanceInfo.<init>(JBossInstanceInfo.java:86)
        at org.rhq.plugins.jbossas.JBossASDiscoveryComponent.processAutoDiscoveredProcesses(JBossASDiscoveryComponent.java:101)
        at org.rhq.plugins.jbossas.JBossASDiscoveryComponent.discoverResources(JBossASDiscoveryComponent.java:86)
        at sun.reflect.GeneratedMethodAccessor36.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.rhq.core.pc.util.DiscoveryComponentProxyFactory$ComponentInvocationThread.call(DiscoveryComponentProxyFactory.java:266)
        at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)</code>

Environment

  • JBoss Operations Network (ON) 2.2, 2.3
  • JBoss Enterprise Application Platform (EAP) 4.2, 4.3
  • Linux
  • User who started JBoss ON agent is different than user who started EAP instance

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