[rabbitmq-discuss] Symmetric federation behavior

Fri Mar 2 14:41:17 GMT 2012

Well, what leads me to think that it's still behaving as before is that I see messages being published on the "federation: ..." queues on both brokers.
I am assuming it is behaving as before because this is what happens when I just the remove the exchange federation configuration, but if I remove the upstream-sets entry as well the broker will crash at startup. I am under the impression that there's no way to unfederate an exchange actually, perhaps because it is a durable exchange maybe?

-----Original Message-----
From: Simon MacMullen [mailto:simon at rabbitmq.com] 
Sent: venerdì 2 marzo 2012 15:36
To: Busoli, Simone
Cc: rabbitmq-discuss at lists.rabbitmq.com
Subject: Re: [rabbitmq-discuss] Symmetric federation behavior

Well, it will still claim to be a federated exchange, but if you don't define any upstreams for it then it won't actually federate. Is that what you mean by "the exchange is still there with federation set-up"?

Sadly the code to let you monitor running federation links hasn't made it into any releases yet so the only way to see if federation is actually happening is to look for messages in the logs along the lines of "Federation exchange foo connected to blah" at startup. There shouldn't be any.

Cheers, Simon

On 02/03/12 14:21, Busoli, Simone wrote:
> Hi Simon, I have tried some local spikes before applying the solution 
> in the production environment, but it appears that I cannot get to 
> unfederate the exchange. Even if I change the configuration and 
> restart the broker, it appears that the exchange is still there with 
> federation set-up. Is that something I should expect?
>
> -----Original Message----- From: Simon MacMullen 
> [mailto:simon at rabbitmq.com] Sent: venerdì 2 marzo 2012 12:28 To:
> Busoli, Simone Cc: rabbitmq-discuss at lists.rabbitmq.com Subject: Re:
> [rabbitmq-discuss] Symmetric federation behavior
>
> On 02/03/12 11:14, Busoli, Simone wrote:
>> the exchange on that broker (as it is durable) would still be of type 
>> x-federation, and I'm not sure the broker will like it.
>
> It's fine to have a federated exchange with no upstreams. It will act 
> like a normal exchange.
>
> Cheers, Simon
>
> -- Simon MacMullen RabbitMQ, VMware
>
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Simon MacMullen
RabbitMQ, VMware