forwarding queries to another server (huh?)

[Kevin Darcy]

Tomas B.Winkler wrote:

> Hi
> I have a similar problem I have an existing domain, let say foo.bar.org
> and I would like to span on it a sub-domain let say test.foo.bar.org
> It wouldn't be so hard but I need a separated named to be a master dns.

Huh? Are you under the impression that a nameserver can be master for only
one zone? Untrue: a single nameserver can be master for large numbers of
zones -- some folks are running thousands of zones from a single
nameserver instance. So there's no reason why your nameserver couldn't be
master for both "foo.bar.org" and "test.foo.bar.org".

But, before you go ahead and configure that, ask yourself whether it's
necessary to delegate a subzone for the test.foo.bar.org subdomain at
all. You could just add the test.foo.bar.org names to the foo.bar.org
zone. Zones and subdomains are not synonymous, although it is true all
zones -- other than the root zone, of course -- are distinct subdomains of
some parent domain.

> The problem is the computer which runs named has not canonical name in
> the test.foo.bar.org domain so the entry is ignored
> The db file looks
>
> $TTL    86400
> @        IN SOA test.foo.bar.org. tomasw.foo.bar.org. (
>                                         42              ; serial
> (d. adams)
>                                         3H              ; refresh
>                                         15M             ; retry
>                                         1W              ; expiry
>                                         1D )            ; minimum
>
>         1D IN NS        mycomp.foo.bar.org.
>
> localhost               1D IN A         127.0.0.1
> mycomp.foo.bar.org.     1D IN A         xx.xx.xx.xx
> test.foo.bar.org.       1D IN CNAME     mycomp.foo.bar.org.
> zzz.test.foo.bar.org.   1D IN CNAME     mycomp.foo.bar.org.

Okay, now you've really lost me. Is this the zone file for foo.bar.org or
test.foo.bar.org? You didn't say. If it's the foo.bar.org zone file, then
the "test.foo.bar.org" entries in it should work fine *without* the need
for any subzone delegation, as discussed above. On the other hand, if it's
the test.foo.bar.org zonefile, then it's pretty hopeless: not only does
the "test.foo.bar.org" CNAME conflict with the "test.foo.bar.org" SOA and
NS records, but the "mycomp.foo.bar.org" entry doesn't belong in the zone
file at all.

By the way, regardless of how the zone is loaded, you shouldn't be using
an alias in the MNAME field ("test.foo.bar.org") of your SOA RR. You
should be using the canonical name ("mycomp.foo.bar.org") instead.


- Kevin

> On Mon, 19 Mar 2001, Pumpkinhead wrote:
>
> > Hi,
> >
> > I have an internal domain, say foo.bar.com.I have a name server
> > behaving properly for it.Call it nsfoo.
> >
> > Now I have set up a test environment domain, say test.bar.com.Note
> > that it's not a subdomain of the first.
> >
> > I want a name server (nstest) on test.bar.com to handle its own
> > queries.That is, when nsfoo receives those queries it makes nstest
> > deal with them.
> >
> > In named.conf on nsfoo I have the following entry:
> >
> > zone "test.bar.com" {
> >       type forward;
> >       forward only;
> >       forwarders{
> >               172.xxx.xxx.xxx;
> >       };
> > };
> >
> > But alas it doesn't work.Do I need to configure my forward RR's ?
> >
> > Thanks in advance,
> >
> > Peter
> >
> >