Re: [cobalt-users] Q /2 How to migrate DNS form RAQ4 to RAQ 550?

[Gerald Waugh <gwaugh@xxxxxxxxxxxxxxxxxxxxxxx>]

On Saturday 05 April 2003 10:01, Greg Hewitt-Long wrote:

> I have a two part problem I think...
>
> 1. migrating the records - the old machine is a RAQ3 and the new is RAQ4i

http://marc.theaimsgroup.com/?l=cobalt-users&m=103540523411102&w=2

> 2. handling the switch over from 2 old IPs for ns/ns2 to two new ones.

Set the TTL to a low value, maybe 300 for at least 24 hours before you switch 
over.

> You appear to have hinted at an additional issue - perhaps I'm missing
> something here - but you say not to have a second primary DNS - we setup
> each of our customers across ns/ns2 on one machine and ns3/ns4 on another -
> the records can be identical on both machines if the site is hosted on a
> third, or they are slightly different if the site resides on either of
> those two physical machines - what is the problem you are hinting at here?

The only problem with two primary (master) nameservers is keeping them 
updated. You need to use rsync or something similar as you have to transfer
/etc/named and /etc/named.conf from one to the other.

Gerald
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