[rabbitmq-discuss] Fwd: Upgrading RabbitMQ cluster

Wed Sep 4 17:56:52 BST 2013

Viraj,

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Forwarded message:

> From: Viraj Gupte <viraj.gupte at credorax.com>
> Subject: Re: [rabbitmq-discuss] Upgrading RabbitMQ cluster
> To: Michael Klishin <michael at rabbitmq.com>
> 
> Hey,
> The upgrade process worked really fine. I am trying to experiment with the downgrading process from RabbitMQ server 3.1.0 to RabbitMq server 3.1.0. Along with this, i also wish to downgrade the erlang version from R15 to R14. I took backup of the mnesia directory which had the cluster config of the 2.8.7 version. Even if I restore the backup copy of mnesia in 3.1.0 and then start rabbitmq-server....the logs show failed message. Is there any fix for this problem? 
> 
> 
> On Sat, Aug 31, 2013 at 5:37 AM, Michael Klishin <michael at rabbitmq.com> wrote:
> Viraj Gupte:
> 
> > 1. Do I have to backup the mnesia directory present on 2.8.7 version and use it when I upgrade to 3.1.0 ?
> 
> Doing a backup is a good idea. The original directory will be used to perform any upgrades
> necessary.
> 
> > 2. How should I backup the messages present in the queues?
> 
> Stop the node and back up the entire Mnesia directory (message store keeps files under it).
> 
> MK

MK

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