[rabbitmq-discuss] Cluster size limit

Jerry Kuch jerryk at vmware.com
Sun Mar 27 17:08:42 BST 2011

150 is a pretty big sounding cluster...  Out of curiosity, what's motivating you to go so big (if you don't mind saying)?

On that note, because RabbitMQ clustering is based on Erlang distribution, the current practical limit you'll probably run up against is somewhat lower than the 150 you have in mind.  Something more like 32 to 64.   

If you can say more about your goals it's likely that someone on the Rabbit team can suggest something helpful.


Sent from my iPad.

On Mar 26, 2011, at 10:32 PM, "Advait Alai" <advaitalai at gmail.com> wrote:

> Hi,
> I'm trying to add 150 nodes to a RabbitMQ cluster. After around 50 nodes, the stop-reset-cluster-start iteration starts giving the error:
> Stopping node rabbit at node130 ...
> ...done.
> Resetting node rabbit at node130 ...
> ...done.
> Clustering node rabbit at node130 with [rabbit at node117] ...
> ...done.
> Starting node rabbit at node130 ...
> Error: {cannot_start_application,rabbit,
>            {bad_return,
>                {{rabbit,start,[normal,[]]},
>                 {'EXIT',{rabbit,failure_during_boot}}}}}
> Note that I am sequentially adding nodes to build a cluster (as an initialization step) before creating any queues/exchanges or running any amqp script.
> How do I solve this problem? Is it because RabbitMQ imposes a hard cluster size limit?
> Also, does RabbitMQ scale well to around 1000 nodes?
> Thanks
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