[rabbitmq-discuss] Federation in a cluster

[Simon MacMullen]

You don't need to declare the same parameters and policies in E and F, 
they're cluster-wide.

You should note that if you specify nodes from the same cluster as 
separate upstreams then the federated exchange will attempt to consume 
from them all simultaneously - this might break message ordering. So you 
would normally add each cluster once.

At the moment there's no way to say "all these upstreams are in the same 
cluster, just ensure you use one of them" although we hope to add this 
in a future release.

Cheers, Simon

On 28/01/13 21:36, Cao, Yican - 0551 - MITLL wrote:
> Hi,
>
>
> In federation document, it says:
> "When using a federation in a cluster, all the nodes of the cluster must have the federation plugin installed. ..."
>
> I have 2 clustered HAQ nodes [A, B, C] and [E, F].
> [A, B, C] is clustered and so does [E, F].
>
> Do I have to:
> in E:
> rabbitmqctl set_parameter federation-upstream my-upstream '{"uri":"amqp://A", "expires":3600}'
> rabbitmqctl set_policy...
> ....
> rabbitmqctl set_parameter federation-upstream my-upstream '{"uri":"amqp://B", "expires":3600}'
> rabbitmqctl set_policy...
> ....
> rabbitmqctl set_parameter federation-upstream my-upstream '{"uri":"amqp://C", "expires":3600}'
> rabbitmqctl set_policy...
> ....
>
>
> and do the same in F:
> rabbitmqctl set_parameter federation-upstream my-upstream '{"uri":"amqp://A", "expires":3600}'
> rabbitmqctl set_policy...
> ....
> rabbitmqctl set_parameter federation-upstream my-upstream '{"uri":"amqp://B", "expires":3600}'
> rabbitmqctl set_policy...
> ....
> rabbitmqctl set_parameter federation-upstream my-upstream '{"uri":"amqp://C", "expires":3600}'
> rabbitmqctl set_policy...
> ....
>
> ?
>
>
> If I want to use Pair of federated exchanges in your example topologies,
>
> Shall I setup same in A, B and C?
>
>
> Thanks.
>
>
> Yican Cao
>
>
>
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>


-- 
Simon MacMullen
RabbitMQ, VMware