Forwarding request to another DNS server but the same domain

[Jeronimo L. Cabral]

DNS1 with dynamic update and DNS2 with manually update....


On Wed, Apr 30, 2014 at 8:11 PM, Kevin Darcy <kcd at chrysler.com> wrote:

>  I'm still not understanding your constraints. If *all* updates come in
> through Dynamic Update, then you don't need freeze/unfreeze.
>
>                                                                         -
> Kevin
>
>
> On 4/30/2014 6:47 PM, Jeronimo L. Cabral wrote:
>
> In office #1, the "company.com" master zone is updated automatically from
> some Windows machines inn DNS1 and in office #2 the same zone is updated
> manually in DNS2 by the administrator who shouldn't update (using freeze
> and unfreeze) the master zone from office #1. This is the scenario, and we
> need that a simple query to DNS1 be responded with any record from both
> zones.
>
>  Thanks again
>
>
> On Wed, Apr 30, 2014 at 5:54 PM, Kevin Darcy <kcd at chrysler.com> wrote:
>
>>  Oh, I thought this was an external-versus-internal scenario. But, this
>> is even easier.
>>
>> A) One of the nameservers (pick DNS1 or DNS2) becomes a slave (of the
>> "stealth" variety, if you want) of the other
>> B) People use nsupdate to maintain the zone
>>
>> For security, TSIG-sign the updates. For fast change propagation, set up
>> NOTIFY if and as necessary.
>>
>>
>>                                                         - Kevin
>>
>>
>> On 4/30/2014 4:32 PM, Jeronimo L. Cabral wrote:
>>
>> Dear John, this is my scenario:
>>
>>  1) Office 1: people work with some machines and fill up a local master
>> zone "company.com" with records in DNS1
>> 2) Office 2: people works with some others machines and fill up a local
>> master zone "company.com" with another records in DNS2
>>
>>  So both office have a different master zone.
>>
>>  Both offices belong to the same company, so I need that any client PC
>> can resolve a hostname from "company.com" domain, independently if this
>> record is in DNS1 or DNS2.
>>
>>  Thanks again, regards.
>>
>>  JeLo
>>
>>
>>
>> On Wed, Apr 30, 2014 at 5:21 PM, John Miller <johnmill at brandeis.edu>wrote:
>>
>>>  Hi Jeronimo,
>>>
>>>  First of all, please just tell us the real domain.  Yes, we could try
>>> and talk about a fictitious "example.com" or "company.com," but having
>>> the real domain name lets us actually query your nameservers.
>>>
>>>  Let me be sure I understand: you have two DNS servers.  Each of them
>>> is authoritative for the same domain.  Are both set as master?
>>>
>>>  The two servers have different copies of the zone--what's your reason
>>> for that?
>>>
>>>  If both servers think they are authoritative for a zone, then they
>>> will answer recursive queries for those zones themselves.  From the manual:
>>>
>>> "Forwarding occurs only on those queries for which the server is not
>>> authoritative and does not have the answer in its cache."
>>>
>>>  What exactly are you trying to achieve?
>>>
>>>  John
>>>
>>>
>>>
>>>  On Wed, Apr 30, 2014 at 3:55 PM, Jeronimo L. Cabral <
>>> jelocabral at gmail.com> wrote:
>>>
>>>>  Dear, I would like to ask for solution related with DNS (bind)
>>>> configuration to allow forward requests to another DNS but related
>>>> with the same domain.
>>>>
>>>> I'm asking about two authoritative name servers serving the same domain
>>>> but with different zone file info on each and have one of them forward
>>>> recursive queries to another one if first one cannot find some particular
>>>> subdomain record that is missing in his version of zone file.
>>>>
>>>>  My named.conf.local is as follow, but it doesn't work:
>>>>
>>>>  zone "company.com" {
>>>>     type master;
>>>>     file "/etc/bind/zones/company.com.db";
>>>>     allow-transfer { key "company"; };
>>>>     check-names ignore;
>>>>     forward first;
>>>>     forwarders { 172.16.1.1; };
>>>> };
>>>>
>>>>  Thanks a lot,
>>>>
>>>>  JeLo
>>>>
>>>>
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>>>
>>>
>>>
>>> --
>>> John Miller
>>> Systems Engineer
>>> Brandeis University
>>> johnmill at brandeis.edu
>>> (781) 736-4619
>>>
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>>
>>
>>
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