Monitoring Trigers on jmc JMX Console

This section provides a tutorial example on how to use JVM monitoring triggers provided by the MBean Browser on jmc JMX Console.

JMX console supports monitoring triggers, which allows to define and activate triggers to catch any specific condition of the JVM. Then raise alerts or fire other actions when the condition is met.

Here is what I did to use the triggers on JMX console:

1. Start "GarbageCollection.java" and "jmc".

2. Open the JMX console on the GarbageCollection JVM.

3. Click "Triggers" tab. I see a list pre-defined triggers.

4. Click to open the "CPU Usage - JVM Process (Too High)" trigger. I see its conditions, action and constrains.

5. Modify the condition to say that when this JVM process uses or higher 1% CPU for 0.1 second or longer, take action:

Max trigger value: 1 %
Sustained period: 0.1 s

6. Click the checkbox next to the "CPU Usage - JVM Process (Too High)" trigger to turn it on.

7. Wait to see alerts displayed with the above condition is met.

Monitoring Triggers on jmc JMX Console
Monitoring Triggers on jmc JMX Console

Of course, you can add your own triggers.

Last update: 2018.

Table of Contents

 About This Book

 Java Tools Terminology

 Java Tools Included in JDK

 javac - The Java Program Compiler

 jar - The JAR File Tool

 jlink - The JRE Linker

 jmod - The JMOD File Tool

 jimage - The JIMAGE File Tool

 java - The Java Program Launcher

 jdb - The Java Debugger

 jcmd - The JVM Diagnostic Tool

 jconsole - Java Monitoring and Management Console

 jstat - JVM Statistics Monitoring Tool

 JVM Troubleshooting Tools

 jvisualvm (Java VisualVM) - JVM Visual Tool

jmc - Java Mission Control

 jmc (Java Mission Control) - What Is It

 Launching jmc (Java Mission Control)

 jmc - JMX Console via MBean Server

 MBean Browser on jmc JMX Console

Monitoring Trigers on jmc JMX Console

 javap - The Java Class File Disassembler

 keytool - Public Key Certificate Tool

 jarsigner - JAR File Signer

 jshell - Java Language Shell

 native2ascii - Native-to-ASCII Encoding Converter

 Outdated Tutorials

 References

 Full Version in PDF/EPUB