4 Replies Latest reply on Dec 15, 2011 9:18 AM by syncmaster2009

Some doubts regarding configuration options...

syncmaster2009 Nov 19, 2011 11:38 AM

Hi:

Can anybody explain me in simple terms what are the purpose and effect of the following options passed to the Jboss startup parameters:

-Djboss.Domain="domain_name" -> shouldn't be jboss.modcluster.loadBalancingGroup ?

-Djboss.modcluster.balancer="cluster1"

Thanks for the help!

1. Re: Some doubts regarding configuration options...

rhusar Nov 21, 2011 10:01 AM (in response to syncmaster2009)

Joao, I will explain just tell me which container (AS) and which mod_cluster first.
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2. Re: Some doubts regarding configuration options...

syncmaster2009 Nov 21, 2011 3:28 PM (in response to rhusar)

I'm using JBoss 5.1.0 GA, because the application that I need to deploy only supports/is certified this version or below.

The mod_cluster that I'm using is version 1.1.3 and I'm using the packed Apache distribution.
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3. Re: Some doubts regarding configuration options...

rhusar Dec 14, 2011 7:33 PM (in response to syncmaster2009)

Haha, looks like a promised an answer.

In AS5 the concept of domain was used to mark a group of nodes. If a node went down, the loadbalancer would failover to a server from the same group. If there werent any other, it would failover to another domain in that case. Also session draining can be done on the whole domain, so if you have 2 racks you can shutdown 1 which is drained, so on.

In AS7 the concept of domain is used in the application server itself, so it was deprecated for better name load balancing group. Actually, the MCMP stayed backward compatible, but still https://issues.jboss.org/browse/AS7-1721

HTH,
Rado
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4. Re: Some doubts regarding configuration options...

syncmaster2009 Dec 15, 2011 9:18 AM (in response to rhusar)

Thanks for the clarification!
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