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Multiple Java process getting started on unix box, whenever the cluster is started

 
Greenhorn
Posts: 6
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Whenever i start cluster on unix box,it starts multiple java process.
I am in confusion what could be problem?

Please somebody help me out as i am facing a strange problem.
 
author and cow tipper
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The problem would be multiple java processes not starting.

A cluster, pretty much by definition, is two or more JVMs working in unison to server up client requests. Requests are workload managed and spread out over the two or more JVMs, and if one JVM goes down, the other JVMs pick up.

The number of JVMs running will conform to the number of JVMs, or servers, in your cluster.

Also, just so you know, WebSphere will also probably be running a node service, so a machine will have all the JVMs, plus a node server. Maybe even a deployment manager JVM if that's running on the same machine as well.

Here's a link about WebSphere deployment and how Clusters and Application servers work together. Enjoy!

http://www.technicalfacilitation.com/get.php?link=deployment

Sounds like you're cluster is working though. Good stuff!
 
Ranch Hand
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Hi

In some old version of Linux , you may see the threads spawned by a jvm process as processes itself. ( ps -efl|grep java)

So, basically a single jvm thread spawns multiple worker threads which looks like multiple processes spawned

Also, when you start the cluster there would be infact multiple jvms running:

one for nodeagent + one for each server


Thanks

DD
 
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