Server ignore ns change

[Kal Feher]

I¹m replying to the list so that others may also assist.
I don¹t wish to be pedantic and I realise that English is not the first
language of many on this list, however your references to master and slave
are not consistent with a cache server configuration. I¹m more confused by
the fact that some of your servers are recursive and others not. Your
answers actually make it sound like you are referring to an internally
hosted domain, not recursive lookups on behalf of clients.

Please clarify the above. Be as explicit as possible, basic information wont
hurt us, but missing information will hurt you (or at least prevent us from
helping you).

Make sure you reply to the list as well, since there are definitely smarter
people than I that read these posts.

On 14/5/08 7:32 PM, "Jonathan Petersson" <jpetersson at garnser.se> wrote:

> 
> 
> On Wed, May 14, 2008 at 10:19 AM, Kal Feher <kal.feher at melbourneit.com.au>
> wrote:
>> I am assuming that both the old and new servers are caching name servers not
>> authoritive (as this might indicate a delegation issue).
> Correct. 
>> 
>> 
>> Starting from the most basic:
>> Which ip addresses are hitting your old servers?
>> Check those hosts for their current config (perhaps you missed a few in your
>> cut over?).
>> Is it only DHCP hosts that are hitting your old servers or even statically
>> configured hosts?
> It's both DHCP and statically hosts. (Linux hosts)
>> 
>> 
>> Check that your new servers arent forwarding requests to the old servers.
>> I've seen this in the past when a testing config wasn't removed from servers
>> put into production.
> Each server is indepentent and doesn't rely on others (except the master
> feeding them). 
>> 
>> 
>> If the above doesn't point you in the right direction then you'll need to
>> provide more information regarding the exact configuration of your network
>> and dns servers.
> 
> We've 1 primary master that feeds all of our slaves. Our master has recursion
> disabled but all slave name-servers has recursion enabled. We don't have any
> authoratitive servers for the domain, I'm not sure why this is, the last admin
> didn't have any good answer for it.
> 
>> 
>> 
>> 
>> On 14/5/08 7:02 PM, "Jonathan Petersson" <jpetersson at garnser.se> wrote:
>> 
>>> > Hi.
>>> > We recently introducted two new dns server in our networks removing our
>>> old
>>> > ones from the DHCP. I've updated the servers which had resolv.conf
>>> > statically. Even though all servers is updated I'm still getting most
>>> > requests to my old servers.
>>> >
>>> > If I do a dig the new servers answers.
>>> >
>>> > What could the reason for this be?
>>> >
>>> > Thanks
>>> >
>>> > /Jonathan
>>> >
>>> >
>>> >
>> 
>> --
>> Kal Feher
>> 
>> 
>> 
> 
> 


-- 
Kal Feher