[jboss-as7-dev] DOCS: Researching details for standalone clustering

[Andrig Miller]

----- Original Message -----
> From: "Darrin Mison" <dmison at redhat.com>
> To: jboss-as7-dev at lists.jboss.org
> Sent: Wednesday, April 27, 2011 7:24:58 PM
> Subject: [jboss-as7-dev] DOCS: Researching details for standalone clustering
> Hi, I'm chasing down details about the "standalone clustering" (as
> included in Beta3) for documentation.
> 
> I've noted the following:
> 1 - There's a clustering-standalone.xml configuration file in
> standalone/configuration that you can start the server with using
> ./standalone.sh -server-config=clustering-standalone.xml
> 

Actually, no.  It turns out that the command-line argument handling in Beta 3, requires this syntax:

./standalone.sh -server-config clustering-standalone.xml

The "equal" sign does not work, but a space does.  I believe Jason hinted that he might fix this, so it may change in Beta 4.

> 2 - This configuration differs from the standard config in that:
> - the org.jboss.as.clustering extension is enabled
> - some additional items are configured in the
> urn:jboss:domain:osgi:1.0 subsystem
> - 2 new subsystems configured (jgroups and infinispan)
> - 6 new socket bindings added to the standard-sockets group for
> jgroups
> 
> So exactly what feature set does this give you out of the box for
> clustering?

So far, nothing that I can tell.  I just had a e-mail conversation with Remy on what I thought might be an issue with HTTP session replication, but he says its not in there yet.

Also, while there is a configuration for Hibernate 2LC, that also is not completely implemented.

My guess is that none of what's configured is actually complete.

> 
> I'm guessing session replication between standalone instances with
> JGroups for intra-node communication and Infinispan for storage?
> 
> Anything else?
> 
> Other questions:
> 
> How does each instance determine which other instances it should be
> clustered with?
> 
> Does this work with multiple instances on one machine (multi-homed or
> on different ports)?
> 
> Can multiple standalone instances using "cluster" configuration live
> on the same network but not all be one cluster? Like 10 instances as 2
> clusters of 5 for example?
> 
> Aside from centralized management, what are the other key features
> from domain mode that you won't get from standalone clustering ?
> 
> Are there any known changes that are going to be made to this feature
> set for GA ?
> 
> 
> Thanks in advance.
> 
> 
> 
> 
> --
> Darrin Mison
> "I'm not a JBoss Developer, I just play one on TV"
> Content Author - Engineering Content Services
> Red Hat, Inc.
> 
> 
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