[rabbitmq-discuss] Naming RabbitMQ nodes with complete domain names

Sat Feb 19 17:49:39 GMT 2011

Hi Alvaro,

I believe you are right. The according modification of the rabbitmq
scripts seems not that straightforward. Here is what I've got sofar:

a) Changed the option -sname to -name in rabbitmq-multi
b) Changed the node name initialization in rabbitmq-env from
NODENAME=rabbit@${HOSTNAME%%.*} to #NODENAME=rabbit@${HOSTNAME}
c) Changed the node names in rabbitmq.config to use full host names.
d) Cleared the mnesia database.

Now, when I attempt to start the nodes, hereunder is what I get.
Apparently, despite these modifications rabbitmq/erlang is still
attempting to set the short name.

Any idea what else I'm missing?
Thanks,
Max.

============================================
Starting all nodes...
Starting node rabbit at ec2-174-122-225-215.compute-1.amazonaws.com...
Activating RabbitMQ plugins ...
0 plugins activated:

{error_logger,{{2011,2,19},{12,33,32}},"Can't set short node
name!\nPlease check your configuration\n",[]}

On Sat, Feb 19, 2011 at 12:32 AM, Alvaro Videla <videlalvaro at gmail.com> wrote:
> Have you tried changing the Erlang option -sname to -name?
>
> That's the way Erlang uses to specify long names.
>
> See http://erlang.org/doc/man/erl.html and then modify your rabbitmq-server script accordingly.
>
> Cheers,
>
> Alvaro
>
> Sent from my iFad
>
> On Feb 19, 2011, at 10:51 AM, Max Bridgewater <max.bridgewater at gmail.com> wrote:
>
>> Hi,
>>
>> This is probably a silly question but it really baffles me right now.
>> The original issue is this: I'm trying to use JInterface to connect to
>> a rabbitmq cluster hosted on EC2. But I keep getting "Cannot connect
>> to peer node". My understanding is that this error is happening
>> because I'm using the address 'rabbit at domain.org' to contact the
>> remote RabbitMQ node named: rabbit at domain. (Note the missing TLD).
>> That is, because there is no exact  match between the node name given
>> to JInterface and the name of the node it is connecting to, the
>> connection fails.
>>
>> I desperately tried configuring RabbitMQ to take the complete domain
>> name (domain.org) instead of just the short domain name (domain). Any
>> suggestion on how to resolve this issue?
>>
>> Beyond this, this problem begs the question of how do RabbitMQ nodes
>> located on different machines across different domains communicate
>> with each other if the only way they can be referred to each other by
>> short name? Up until now, I've only clustered nodes on the same
>> machine.
>>
>> I'm sure missing something. Please enlighten me.
>>
>> Sincerely,
>> Max.
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>