[Samba] Internal DNS CNAME not working

[Wayne Andersen]

Centos 6.4 64bit

I have just sent the details of strace and dig, in a separate mail
Frankly I do not know how to read the results.

dnstracer -v my-server.mydomain.com fails with, return code 3 (Name error)
dnstracer -v -q cname my-server.mydomain.com succeeds, returns Resource 
data (9)samba-001

It looks like my resolver only checks the local dns for A records.

Wayne Andersen
System Administrator
Clima-Tech Corporation
208-947-1849

On 03/28/2013 09:50 PM, Günter Kukkukk wrote:
> Am Donnerstag, 28. März 2013, 23:42:50 schrieb Wayne Andersen:
>> Samba 4.0.0
>>
>> I am running all of these commands from the PDC DC1.
>>
>> /etc/resolv.conf
>> domain mydomain.com
>> nameserver 127.0.0.1
>>
>> smb.conf does have a
>> dns forwarder = 192.168.1.2
>>
>> samba-001 the actual host name, and also a PDC, in the same domain.
>> I would like to have the alias my-server point to samba-001.
>>
>> I added a CNAME record:
>> bin/samba-tool dns add 127.0.0.1 mydomain.com my-server CNAME samba-001
>> -Uadministrator
>>
>> I can query it.
>>
>> bin/samba-tool dns query 127.0.0.1 mydomain.com my-server CNAME
>> Password for [administrator at MYDOMAIN.COM]:
>>     Name=, Records=1, Children=0
>>       CNAME: samba-001. (flags=f0, serial=6, ttl=900)
>>
>> Host finds it.
>>
>> host -t CNAME my-server.mydomain.com
>> my-server.mydomain.com is an alias for samba-001.
>>
>> I cannot ping it, it is not resolving properly.
>>
>> ping samba-001,  resolves to the proper IP
>> ping samba-001.mydomain.com,  resolves to the proper IP
>> ping my-server,  ping: unknown host
>> ,  ping: unknown host
> which unix/linux distro and version are you running?
>
> Try
> strace ping -c1 my-server.mydomain.com
> and look for errors.
>
> I did the same tests here on opensuse (samba git master) and
> don't see that failure.
>
> What do you get with:
> dig @localhost my-server.mydomain.com   ?
>
> Cheers, Günter