Wednesday, October 23, 2013

JMXConsole

created by Juha Lindfors on Feb 11, 2004 1:44 AM, last modified by Viacheslav Garmash on Apr 3, 2011 12:08 AM

Version 23

JMX Console

After JBoss has succesfully started you can locate the JMX console at http://localhost:8080/jmx-console in the default distribution. Notice that if you have configured the servlet container (Tomcat) to service a different port then you need to supply another port number in the URL.

The JMX console provides a raw view into the microkernel of the JBoss application server. It lists all registered services (MBeans) that are active in the application server and that can be accessed either through the JMX console itself or programmatically from Java code.

Things to do with the JMX Console:

Topics:

Securing the JMX Console
Access Control on the JMX Console
Internationalisation (currently in patch form) - see JBossConsoleI18n

The JMX Console looks like this:

jmx-shutdown-1.jpg160.7 K
jmx-console-3.2.3.png116.5 K

Generate a Thread Dump using JMX Console (JBoss AS 3,4,5,6)

created by Unknown User on Feb 14, 2004 3:29 PM, last modified by Ondrej Zizka on Dec 13, 2012 7:00 AM

Version 25

This page may be obsolete.

Generate a thread dump using JMX Console

In order to generate a thread dump:

1. Open the JMXConsole (for example: http://localhost:8080 )

2. Navigate to jboss.system:type=ServerInfo mbean (hint: you can probably just CTRL-F and enter type=ServerInfo in the dialog box)

3. Click on the link for the Server Info mbean.

4. Navigate to the bottom where it says "listThreadDump"

5. Click it and get your thread dump

6. Enjoy your thread dump (and/or debug your problem, send it up to JBoss support or attach it to your bug report)

Notes:

If you are using Internet Explorer you should use File -> Save As to save the output instead of copying the data to a text editor. For some reason when you copy the text from Internet Explorer the line breaks are not copied and all of the output ends up on a single line.

Generate a Thread Dump using Twiddle

Alternatively you can use twiddle to execute the listThreadDump method and pipe the returned HTML directly to file i.e.

/bin/twiddle invoke "jboss.system:type=ServerInfo" listThreadDump > threads.html

Update for JBoss v3.2.8/4.0.2 - when running under JDK5 additional information is printed for each thread (id, state, lockName, and a full StackTrace)

Also See: Generating a thread dump without the console

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