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From "Musto Domenico" <>
Subject RE: Multi data-center configuration
Date Thu, 29 Oct 2009 16:09:23 GMT


we already tried putting the same seeds list on each DC but it did not work




From: Jonathan Ellis [] 
Sent: giovedì 29 ottobre 2009 17.06
Subject: Re: Multi data-center configuration


the seeds list needs to be the same for both DCs -- in fact your whole configuration file
should be the same.

put one node from each DC in the seeds list.

On Thu, Oct 29, 2009 at 9:59 AM, Musto Domenico <> wrote:



thank you for your reply.


We tried your suggestion but it did not work.


We are working on version 4.1 and we have already verified that there are no network problems
between the datacenters. Also we verified that the nodes inside the same data center are joining
each other without any problem.


In attach our configuration files.


I hope you can help us


Thank you


From: Jonathan Ellis [] 
Sent: giovedì 29 ottobre 2009 15.32
Subject: Re: Multi data-center configuration


Try with one seed from each DC.

On Thu, Oct 29, 2009 at 8:19 AM, Musto Domenico <> wrote:

Hi there,


we are experiencing a problem with a multidatacenter configuration.

We have the following scenario :


We have two data-centers with 3 nodes each.


We have configured seeds like this on each datacenter.




      <Seed>ip2_datacenter_A </Seed>

      <Seed>ip3_datacenter_A </Seed>

      <Seed>ip1_datacenter_B </Seed>



We tried both RackAwareStrategy and RackUnAwareStrategy but it seems that the two data-centers
are not communicating at all between them.


Also, with  version 4.1 and RackAwareStrategy we are getting an error : UnsupportedOperationException:
Rack-aware bootstrapping not supported
With trunk version we are not getting the error but there is no communication at all between
Can anyone help?



Domenico Musto 

Software Factory Developer

YOOX Group 

Via Nannetti 1, 40069 Zola Predosa, Bologna, Italia

T  +39 051 6184240 

F  +39 051 6184215 



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