[ale] DNS Server Config for Two Domain Names?

[Ryan Neily]

Matt, 

Thanks for the reply, this is EXACTLY what I was looking for.  I found 
lots of ways to do it with multiple zone files as well as playing tricks 
with CNAME/DNAME combinations, but not an easy short way using one zone 
file. 

I am assuming this is ok for BIND 8.x and 9.x?

On Tue, 16 Jul 2002, Matt Smith wrote:

> If in the zone file, you use @ at the top, rather than a domain name, you
> can reference the zone file twice in your named.conf file for two different
> domains and the two domains will be identical.
> 
> Here's an example (Private IP's used):
> 
> Named.conf snippet.
> 
> 
> zone "ryan.com" in {
>         type master;
>         file "myhosts";
> };
> 
> zone "neily.com" in {
>         type master;
>         file "myhosts";
> };
> 
> ---------------------------------------
> Here's what myhosts needs to look like:
> 
> $TTL 3600
> @            IN   SOA     dns  mailhost. (
>                           2001071901            ; Serial
>                           10800                 ; Refresh
>                           1800                  ; Retry
>                           3600000               ; Expire
>                           259200 )              ; Minimum
> 
>                         MX      10 10.1.1.1
>                         NS      10.1.1.1
>                         A       10.1.1.1
> 
> www                     A       10.1.1.1
> mail                    A       10.1.1.1
> localhost    IN   A       127.1 ; note that 127.1 is the same as 127.0.0.1;
> see inet(3n)
> 
> --------------------------------------
> 
> That should work.  Now you'll have www, mail, etc for both domains...  I may
> have a syntax error somewhere, but I'm sure bind will tell you where. :)
> 
> 
> --Matt
> 
> 
> -----Original Message-----
> From: Ryan Neily [mailto:ryan at neily.net]
> Sent: Monday, July 15, 2002 4:49 PM
> To: ale at ale.org
> Subject: [ale] DNS Server Config for Two Domain Names?
> 
> 
> 
> Are there any DNS/BIND freaks out there that can answer this question?
> 
> I am looking to change an authoritative DNS server (Bind 9.21) so that it 
> it will resolve for two domains at the same time.  What I am looking to 
> do is have a domain (for example ryan.com) and another domain (for 
> example neily.com) resolve for the same hosts. (Meaning hostx.ryan.com and 
> hostx.neily.com will resolve to the same IP address)  I know that I can 
> make duplicate copies of the data and reverse files, but then when 
> updating, I will have to make changes in two places...
> 
> Is there any way to do like an "alias" in BIND 9.21?  It seems like this 
> would be common knowledge as many companies own multiple domains. 
> 
> Any ideas?
> 
> 

-- 
Ryan Neily
ryan at neily.net


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