Re: [jboss-as7-dev] DOCS: Researching details for standalone clustering
----- Original Message -----
From: "Darrin Mison" <dmison(a)redhat.com>
To: jboss-as7-dev(a)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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