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7.6. Enabling Debug Mode for the Agent

The JBoss ON agent, like the JBoss ON server, uses log4j for its logging. To troubleshoot agent performance or server-agent communication, enable debug logging for the agent, which enables the log4j debug log.
The log files are in the agentRoot/rhq-agent/logs directory.

7.6.1. Using an Environment Variable

The quickest way to enable debug logging is to set the RHQ_AGENT_DEBUG environment variable to any value before starting the agent. When you start the agent, both the launcher scripts and the agent itself will output debug messages.
If the JBoss ON agent is running on Microsoft Windows using the service wrapper, set RHQ_AGENT_DEBUG and then install the service: 
rhq-agent-wrapper.bat install