JMX, SNMP, Java, etc...

Project OpenDMK includes a cascading API that makes it possible to federate MBeanServers. When several applications are running in the same JVM, this example shows how the OpenDMK cascading API can be used to keep applications MBeans isolated by using one MBeanServer per application instance, but still presenting a single point of access to remote clients by federating all MBeanServers in a single global MBeanServer.

Federation of MBeanServers is also discussed for JMX 2.0. Although it does share some concepts with the cascading feature of OpenDMK, it will also have some noticeable differences.

The OpenJDK and NetBeans IDE WebSite has now a tutorial that shows how to build various part of the JDK, and the JDK itself: in particular, there's a chapter dedicated to building the JMX API sources, and another one dedicated to building the JConsole graphical tool sources.

You may have seen an OpenDMK project lingering on java.net for a few weeks: Well, I am pleased to announce that we have pushed a first snapshot of the sources just before JavaOne.

We have written a white paper about JMX Interoperation With Non Java Technologies. This whitepaper explains how the Web Services Connector for JMX Agents (defined by JSR 262) was successfully used to provide interoperation with non Java technologies and products such as Hewlett Packard's OpenView Operations Agent (HP-OVO), and Microsoft's Windows Remote Management (WinRM).

Update: Jean-Francois has written an article on how to deploy the JMX WS Connector within a J2EE Application server.

As you were already informed by many prominent bloggers from the Java Community, the OpenJDK Project is finally out!

And of course, the JMX technology and JConsole graphical tool are part of it. Cherry on the cake: we are even providing NetBeans IDE `projects' that will let you work easily on JMX and JConsole without having to compile the whole OpenJDK!

A few weeks ago I blogged about how to programmatically access the JVM Monitoring information. Here is a small Java application that prints all the attributes of all the JVM Management & Monitoring MBeans.

The sample simply prints the attributes of the JVM MBeans from the JVM in which it runs. It would be very easy to make it print the information of a remote JVM. You would just need to copy the code from the JVMRuntimeClient shown in my previous blog: [More]