Re: [cobalt-users] IMPORTANT Double DNS entries

[Rik Thomas <rikt@xxxxxxxxxxxx>]

No this is known as round robin DNS, roughly 50% of the queries will be
going to the new IP address.  In other words it will continue to cause
problems.

All you can do it crank down your ttl and go from there.  That is the best
you can do for the most part.

On Fri, 3 Mar 2000, manitu wrote:

> Hello all,
> 
> a friend of mine has a problem and he told me to ask the question here.
> 
> The situation. His server is going to be moved from one datacenter to a new
> one. The ips for his virtual sites as well as for the server are going to
> change.
> 
> Therefore he has setup his dns so that all hostnames (e.g. www) are pointing
> to the old AND the new ips, e.g.
> 
>         www.domain.com                A record                old.ip.is.here
>         www.domain.com                A record                new.ip.is.here
> 
> Now he has problems but it is difficult to say if the datacenter (the old,
> the move is coming in the middle of march) makes the problems or these
> entries.
> 
> What I would like to know is the following. There are two entries for each
> host, one with the old ip which should be working and one that is not active
> yet. My intention with these double entries was that the move of the server
> does not cause more outage than the offline time of the server. I hope that
> always the right ip is used when accessing a site. What do you think ?
> 
> Manuel
> 
> 
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-- 
Rik Thomas CTO rikt@xxxxxxxxxxxx
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