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Troubleshoot JMX metrics

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Jean Bisutti edited this page Jul 13, 2023 · 2 revisions

This page aims to help to troubleshoot JMX metrics.

First, download JMXTerm.

After, start JMXTerm: java -jar jmxterm-1.0.2-uber.jar

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Type jvms to have the PIDs of the Java applications.

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The jvms command may not work (see). In this case, you can use the jcmd or jps Java command to retrieve the PID of your application before using JMXTerm.

Open a connection to your application: open <PID>.

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Display the available domains: domains

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Select the wanted domain: domain <domain-name>

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Display the MBeans for this domain: beans

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Select the wanted MBean: bean <object-name>

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Display the attributes of this bean: info

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You can then evaluate an attribute: get <attribute-name>

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JMXTerm has added a : at the end of the objectName.

The JMX metrics configuration has to contain available objectName and attribute name.

"jmxMetrics": [
      {
        "name": "Troubleshoot JMX metric",
        "objectName": "java.lang:type=OperatingSystem",
        "attribute": "Name"
      }
]
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