[rabbitmq-discuss] RabbitMQ Clustering and HA Approach

Fri Apr 18 07:27:52 BST 2014

Hi

We have installed rabbitmq 3.2.4 for using it with mcollective architecture
. We have setup the rabbitmq cluster and set up the HA mirrored queues.
Currently in PROD, we have 15000 nodes in the network trying to use
rabbitmq for rpc communication and they might increase . The questions I
have is

1) we are planning to have 3 node cluster . It appears like all the queues
are connected to the master. Will all these queue connections create load
on master rabbitmq ? for ex , 15000 tcp connections to same port/ip.
    or will the other nodes in the cluster be able to handle the load and
the messages from mcollective ? can you brief me how the messages are
routed  to the queues within the nodes ?

2) we have HA'ed the queues with ha_mode=all , for these 3 nodes , will
this cause any performance issue ? if the master is down and come over a
new slave node to the cluster , will it handle the load as before ?

3) what is the scalability solution we need to look into incase we have
more connections coming into the application ?

what we are looking for is a better approach to load balance rabbitmq, its
queues and manage HA correctly.

Thanks
Srikanth
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