[Building Sakai] Clustering portal chat

[Omer A Piperdi]

We are trying to set up neo portal chat in a cluster environment and I 
am not able to successfully configured. It only works when users login 
into same machine, if a user is logged into another machine, chat tool 
says "User is offline" even the user is not offline.

Here is what I have done with the settings. Since I want to use specific 
address and port for multi-casting, so I created jgroups-config.xml file 
under tomcat/sakai folder. But I don't think Sakai is loading the 
mcast_addr and mcast_port that I specify in the file.

I get this message during startup..
-------------------------------------------------------------------
GMS: address=sakaidev-n1-32110, cluster=owlspacechat, physical 
address=10.64.93.212:33844
-------------------------------------------------------------------
2013-07-16 17:11:22,532  INFO localhost-startStop-1 
org.sakaiproject.portal.chat.entity.PCServiceEntityProvider - Portal 
chat is connected on JGroups channel 'owlspacechat'

But the physical address here is the ip address of the host, not the 
mcast_addr that I specified in config file..

Where should I put the mcast_address so that both machine use the same 
address???

Thanks
Omer