[rabbitmq-discuss] High Availability and Load Balancers

Thu Apr 24 20:48:53 BST 2014

We have a similar setup with our F5 LB - exposing a VIP to the application
and checking the health of the nodes from the F5 by querying the api.

Cheers,

-ronc

On Thu, Apr 24, 2014 at 11:52 AM, Arun Rao <arunrao.seattle at gmail.com>wrote:

> I am using Load Balancer (F5). I am using Producer VIP separately from
> Consumer VIP. This gives me a lot of flexibility when doing maintenance.
> For Producer VIP, I am using a API health http://<hostname>:15672/api/aliveness-test/<vhost>
> and looking for "status":"ok" result.
>
> For consumer VIP, I am just using TCP Half-open.
>
> HTH,
> -arun.
>
>
> On Thu, Apr 24, 2014 at 10:01 AM, vish.ramachandran <
> vish.ramachandran at gmail.com> wrote:
>
>> Hello RabbitMq Team,
>>
>> We are caught in a decision point on whether to choose a load balancer in
>> front of cluster members or to choose a setup where the list of cluster
>> members is baked into client configuration.
>>
>> Data points:
>>
>> 1. We are using clustered rmqs mainly for high availability. Our queues
>> are
>> set up for HA in this setup.
>>
>> 2. Scalability is not a concern yet. We don't expect to add new members to
>> the cluster dynamically. Dynamic DNS is a possibility for recovering any
>> failed nodes.
>>
>> 3. We are using libraries like Spring AMQP and SStone that provide for
>> automatic reconnect/failover. This takes care of consumption. We also plan
>> to design clients to retry publishing upon failure.
>>
>>
>> Questions:
>>
>> 1. We would like to detect failed connections quickly on the client side.
>> We
>> wonder whether TCP load balancers do a good job of detecting failed
>> connections or sit on a bad connection till a real problem is seen.
>>
>> 2. If clients deal with the cluster members directly, is it any better?
>> Can
>> the RMQ client library (like sstone or spring amqp) do a better job at
>> detecting failures quicker than load balancers?
>>
>> 3. Can the actual consumers and publishers (clients of the RMQ libraries)
>> take any special action to detect and recover from failures quickly?
>>
>>
>> Thanks
>> Vish
>>
>>
>> Thanks
>> Vish
>>
>>
>>
>>
>> --
>> View this message in context:
>> http://rabbitmq.1065348.n5.nabble.com/High-Availability-and-Load-Balancers-tp35058.html
>> Sent from the RabbitMQ mailing list archive at Nabble.com.
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>>
>
>
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