[Building Sakai] Clustering portal chat

Omer A Piperdi omer at rice.edu
Wed Jul 17 09:50:24 PDT 2013


Thanks Adrian.. I am running a program to monitor the jGroup session 
multicast traffic and I see both machine talking to ip address and port 
that I specify in config. file.

But I am getting following error in catalina.out and still cannot chat 
between the boxes..

2013-07-17 10:22:16,464  WARN OOB-63,owlspacechat,sakaidev-n1-6688 
org.jgroups.protocols.UDP - sakaidev-n1-6688: no physical address for 
7edaa4b2-cf26-cc70-fdd3-e0541bf29883, dropping message
2013-07-17 10:22:21,907  WARN OOB-63,owlspacechat,sakaidev-n1-6688 
org.jgroups.protocols.pbcast.NAKACK - sakaidev-n1-6688: dropped message 
437 from 7edaa4b2-cf26-cc70-fdd3-e0541bf29883 (sender not in table 
[sakaidev-n1-6688]), view=[sakaidev-n1-6688|0] [sakaidev-n1-6688]

Thanks,
Omer
On 7/17/2013 4:07 AM, Adrian Fish wrote:
> Alternatively, you can supply params to jgroups via system properties.
>
> *-Djgroups.udp.mcast_addr=xxx.xxx.xxx.xxx -Djgroups.udp.mcast_port=xx*
> *
> *
> *I got that from here:*
> *
> *
> *https://community.jboss.org/wiki/SystemProps?_sscc=t
> *
> *
> *
> *cheers again,*
> *Adrian.*
>
>
> On 16 July 2013 23:28, Omer A Piperdi <omer at rice.edu 
> <mailto:omer at rice.edu>> wrote:
>
>     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 <http://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
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