"A version must be defined either via the MANIFEST.MF 'Implementation-Version' attribute or via the plugin descriptor 'version' attribute." error in the 2.4.1 JON agent.log

Solution Verified - Updated -

Issue

  • We just installed JON 2.4.1 and are now seeing the below errors in the agent.log:

    ERROR [RHQ Agent Plugin Container Restart Thread] (rhq.core.pc.plugin.PluginManager)- Plugin [Apache] at [file:/opt/jon-agent/rhq-agent/plugins/rhq-apache-plugin-3.0.1.GA.jar] could not be loaded and will therefore not be deployed.
    org.rhq.core.clientapi.descriptor.PluginTransformException: No version is defined for plugin jar [file:/opt/jon-agent/rhq-agent/plugins/rhq-apache-plugin-3.0.1.GA.jar]. A version must be defined either via the MANIFEST.MF 'Implementation-Version' attribute or via the plugin descriptor 'version' attribute.
         at org.rhq.core.clientapi.descriptor.PluginTransformer.getVersion(PluginTransformer.java:105)......
    

Environment

  • JBoss Operations Network (JON) 2.4.1
  • Sun JVM 1.5, Open JDK 1.5, or IBM j9

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