[Building Sakai] Clustering portal chat

[Juan José Meroño Sánchez]

It seems that one cluster member was shunned. Did you try to configure shun
to false? I don't know if this is a valid option for mcast.
 El 17/07/2013 20:29, "Omer A Piperdi" <omer at rice.edu> escribió:

>  Actually, I have to increase the join_timeout in jGroup pbcast.GMS to
> make it work.. or start two Tomcat at the same time will work also..
>
> I would like to know if anyone running portal chat in production?? How are
> they handling this issue. In case if you need to bring one machine down
> from cluster and put it back in later, portal chat might not work..
>
> Thanks
> Omer
> On 7/17/2013 11:50 AM, Omer A Piperdi wrote:
>
> 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> 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
>> -------------------------------------------------------------------
>> 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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