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Re: Swapping hosts



On Fri, 26 Mar 2004, Steve Crook wrote:

> I want to migrate a Mixminion server from one host to anther.  Both
> machines have a static address and the Mixminion Hostname points to a
> CNAME record that is now configured with a short TTL.  What steps should
> I take to perform a clean migration with minimal loss of messages?
> 
> Note: This question has been asked and answered in the list before, but
> Mixminion has gone through several releases since and I think the
> methodology has probably changed.

- Make sure the hostname DNS entry has a short TTL  (you already did that)
- wait until the former, longer TTL has timed out on all nameservers
  that might have cached it.
- shutdown mixminion on the old host
- copy it over to the new host (including keys, and most importantly
  replay logs)
- Update the IP setting in the config  (this will no longer be necessary
  once all mixminion setups out there use something that will route by
  hostname only)
- Possibly update ListenIP in the config if you have set it.
- start mixminion on the new host
- update DNS to point to the new host
- increase the TTL if you are convinced that everything is fine.

Hope I didn't miss anything

Peter
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