[rabbitmq-discuss] Portability of mnesia and other data between IP addresses

Simon MacMullen simon at rabbitmq.com
Wed Apr 13 12:22:22 BST 2011

On 11/04/11 15:18, Alext0 wrote:
> OK, a query with almost the same subject was posted a while ago!
> But that concerned clustering, DRBD etc, and our scenario is much simpler...
> We want to migrate an RMQ instance from one machine to another by stopping
> it, transferring the data files and restarting it at the destination.
> Externally, the DNS hostname is migrated from one IP address to the other.
> Our RMQ nodename will use the DNS name (e.g. RMQ1 - not a FQDN) so this
> won't need to change.
> Despite this, we heard there might be references to the IP address in mnesia
> files and hence migrating the IP address too would be required (i.e. we need
> a VIP) - can we get away without this?

I don't believe Mnesia embeds IP addresses (where did you hear that?). 
You should be fine.

Cheers, Simon

Simon MacMullen
Staff Engineer, RabbitMQ
SpringSource, a division of VMware

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