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Foglight for JMX 5.9.8 - User Guide

Foglight for JMX System Requirements Installing Foglight for JMX Managing JMX Agents Managing MBean Server Models Monitoring and Investigating JMX Data

Activate and Deactivate JMX Agents

Activating an agent instance starts the agent process. By default, an agent is activated after it is created through the Application Servers Administration dashboard. You can choose to manually activate an agent, either during agent creation, or at a later time (for example, after the agent has been deactivated for any reason). Only activated agents can collect data.

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In the list that opens, click Start Data Collection.

Deactivating an agent stops the agent process on the monitored host and stops all data collection for that agent.

Start and Stop Data Collection

When you start data collection, the agent begins to monitor the applicable part of your environment and sends data about it to the Management Server. When you stop data collection for an agent, the agent remains activated but no longer collects information from the monitored host.

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In the list that opens, click Stop data collection.

To re-start data collection for the selected agent, click Start data collection in the list.

Reconnect to an MBean Server

If your server went down but has not returned to service, or if you have changed the connection settings, the JMX agent automatically attempts to reconnect to the server at specified intervals. If necessary, you can force the agent to attempt to reconnect to the server. The option to Retry connection appears in the agent options only when applicable.

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Review JMX Agent Connection Logs

This option allows you to quickly review the agent connection state changes. This is helpful when you are trying to diagnose connection issues between the JMX agent and the MBean Server.

For example, you may need to investigate an error in the Service URL. The log table lists the time at which the agent state changed from Collecting data to Running but not collecting data. This time may correspond to a server outage, or to when a connection setting on the server was changed.

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Click Close to close the dialog box.
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