5.3. Configuring the broker to collect JVM metrics

Procedure

1. Open the <broker_instance_dir>/etc/broker.xml configuration file.

2. In the <metrics> element that you added to the configuration when enabling the Prometheus metrics plugin, specify whether the broker collects JVM metrics for Garbage Collection (GC), memory, and threads. For example:

   <metrics>
       <jvm-gc>true</jvm-gc>
       <jvm-memory>true</jvm-memory>
       <jvm-threads>true</jvm-threads>
       <plugin class-name="com.redhat.amq.broker.core.server.metrics.plugins.ArtemisPrometheusMetricsPlugin"/>
   </metrics>

   注意

   If you do not explicitly add the jvm-memory parameter to your configuration and specify a value, the broker uses a default value of true. This means that the broker exports JVM memory metrics by default. The default values of the jvm-gc and jvm-threads parameters are false.

3. Save the broker.xml configuration file. The broker starts to gather the JVM metrics that you have enabled. These metrics are also exported to Prometheus format.