• Table of contents
• Using jmx-console & tomcat status (production)
  • Steps
  • Example URLs for jmx-console & tomcat status

Using jmx-console & tomcat status (production)¶

In production environment, the Jboss application server listens to IP, 127.0.0.1 and port 8080. In order to use the jmx-console through VPN, one must redirect the traffic in the port 8080 to a specific port. In this guide, the port, 9999 will be used for this purpose.

Steps¶

1. login to the server via ssh which has jmx-console running
2. cd to /tmp
   

   $ cd /tmp
   

3. locate the file, backpipe
   1. if exists, skip and proceed to next step
   2. if not exists, execute(without the dollar sign):
      

      $ mknod backpipe p
      

4. execute the following command for port traffic redirection(without the dollar sign):
   

   $ nc -l -p 9999 0<backpipe | nc 127.0.0.1 8080 1>backpipe
   

5. launch web browser and navigate to the jmx-console:
   

   e.g. http://<<vpn IP address>>/jmx-console/
   

6. done

• [Important Note] You may need to re-execute the command in step 4 periodically should it get terminated.
• [Important Note] One should use it for troubleshooting purpose only, not monitoring.

Example URLs for jmx-console & tomcat status¶

• List of currently serving web request:
  

  http://<<ip address>>:9999/status?full=true

• Connection pool usage:
  

  http://<<ip address>>:9999/jmx-console/HtmlAdaptor?action=inspectMBean&name=jboss.jca%3Aservice%3DManagedConnectionPool%2Cname%3D<<connection pool name>>
  
  ip address - IP address of the server
  connection pool name - the name of the connection pool
  

• Thread Dump & memory usage:
  

  http://<<ip address>>:9999/jmx-console/HtmlAdaptor?action=inspectMBean&name=jboss.system%3Atype%3DServerInfo