[rabbitmq-discuss] RabbitMQ Network Partition Diagnostics

[Tim Watson]

Hi Steve,

On 21 Mar 2013, at 15:42, "Croy, Steve" <SCROY at eprod.com> wrote:
> 
> I have a couple more questions:
>        1.  Would you recommend that the node(s) be on the same VLAN?

If you're using clustering then the guidance is 'use a reliable network' - which is a bit fuzzy admittedly. If being on the same vlan decreases the risk of comms disruption (of any sort) then yes, though I can't comment on whether or not that's really the case.

>        2.  We are running the nodes on VM(s), would physical be better?  (Since RabbitMQ is VMWare I think I know the answer, but have to ask :)

In theory that shouldn't matter, but obviously you'll need to make sure your virtualisation setup is 'just right' - again that's not something I'm an expert with I'm afraid.

>        3.  Would running a three node cluster with the correct mnesia setting be more reliable?  Majority cluster wins vs. two node both majority?
> 

Actually it won't make any difference. If any comms breakdown occurs, it can potentially force you to restart nodes. We're planning on releasing some features to help deal with minority islands in the next release (ish).

Cheers
Tim