[Samba] Samba4 DNS - Adding CNAME

Mike Howard mike at dewberryfields.co.uk
Sat May 19 03:51:34 MDT 2012

On 19/05/2012 10:41, Michael Wood wrote:
> Hi
> On 19 May 2012 11:34, Mike Howard<mike at dewberryfields.co.uk>  wrote:
>> Hi All,
>> I'm using samba 4.0.0alpha21-GIT-UNKNOWN provisioned to use the internal dns
>> server. I'm having a bit of trouble adding a CNAME entry, or more correctly,
>> getting it to resolve after adding.
>> Prior to adding the CNAME a query returns (the relevant record);
>>   Name=centos, Records=1, Children=0
>>     A: (flags=f0, serial=2, ttl=900)
>> It's more than likely me doing something wrong, I really am poking around in
>> the dark a bit with samba-tool, so maybe somebody could help me out. I've
>> added a CNAME entry using samba-tool as follows;
>> samba-tool dns add mydomain centos CNAME debian
>> where<mydomain>  is the zone,<name>  is the name of a current A record (see
>> above) and<debian>  is the CNAME I want added.
>> A query no returns (the relevant record);
>>   Name=centos, Records=2, Children=0
>>     A: (flags=f0, serial=2, ttl=900)
>>     CNAME: debian. (flags=f0, serial=19, ttl=900)
>> On the face of it, to a layman like myself, the entry is added successfully
>> (as per samba-tools output - Record added successfully), however,
>> am 'nslookup' returns;
>> # nslookup debian
>> Server:
>> Address:
>> Non-authoritative answer:
>> *** Can't find debian: No answer
>> So, the question is; What am I doing wrong?
> I haven't tried the above myself, but it seems you are adding it the
> wrong way around.  i.e. it looks like you are saying that the
> canonical name of "centos" is "debian" instead of what you want (i.e.
> that the canonical name of "debian" is "centos".)
> i.e. it looks like you now have this situation:
> centos IN A
> centos IN CNAME debian
Yes, I did wonder about that and did try it the other way around. That 
resulted in a new record as follows;

   Name=debian, Records=1, Children=0
     CNAME: centos. (flags=f0, serial=21, ttl=900)

But it still doesn't resolve.

Any question is easy if you know the answer!

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