Use the following command to verify that the agent process is running:
Linux:
ps -ef | grep machine
CODE
Windows:
Open a command-line console.
Start the Task Manager and click the Processes tab.
The agent process should be running. If it is not running, stop and then restart the agent
Resolve Agent Connectivity Problems
Make sure you have configured the Controller IP address, Controller port number, and Account Access Key in the agent startup command, script or plist, or in the controller-info.xml file.
After configuring, restart the agent and check the behavior. Machine Agent log files may also provide some insight into problems.
If when you start the Machine Agent, it cannot register with the controller or associate with the same node in the Controller, the stack trace may reveal the reason why.
For example, the following message in the stack trace may indicate that the application, tier, and node information was not provided during the Machine Agent startup command or in the controller-info.xml file.
<execution-output>System agent 239590 not associated with application, metric registration request refused.</execution-output>