[Samba] howto test ddns

Rowland Penny rowlandpenny at googlemail.com
Sat Aug 2 10:09:23 MDT 2014

On 02/08/14 16:58, steve wrote:
> On Sat, 2014-08-02 at 15:37 +0100, Rowland Penny wrote:
>> On 02/08/14 15:14, steve wrote:
>>> On Sat, 2014-08-02 at 14:47 +0100, shadrock uhuru wrote:
>>>> hi Steve
>>>>> On Sat, 2014-08-02 at 06:02 +0100, shadrock uhuru wrote:
>>>>>> / hi
>>>>> />/
>>>>> />/ please could we start all over again,
>>>>> /Yes. No problem.
>>>>>> / ashanti is the AD DC with a static address of
>>>>> />/ testserver.tissisat.co.uk is a ficticous server to test the ddns update
>>>>> />/ with.
>>>>> />/ i  have assumed that the server line in the nsupdate command is for the
>>>>> />/ dns server i.e. the AD DC
>>>>> /
>>>>> OK, nearly there. _Where_ are you performing the nsupdate command?
>>>>> Cheers,
>>>>> Steve
>>>> i have performed the nsupdate on ashanti (AD DC),
>>> Hi
>>> Please have a think about this. You have quite rightly assigned a static
>>> IP to your DC. You must _not_ perform the ddns update there! It does not
>>> and should not move from that IP. Ever. The reason for having ddns
>>> updates is so that DNS can keep track of the client machines you have
>>> joined to the domain. These machines (usually for convenience) receive
>>> their IP via dhcp.
>> I think that what you mean is:
>> The DC must have a fixed ipaddress and as such, you should not use
>> nsupdate or anything else to reset the DC's ipaddress. You can run
>> nsupdate on the DC, but never to update the DC itself.
>> Rowland
> Hi
> Yes, thanks for the translation. That's it. What we don't understand is
> what the OP is trying to update as he doesn't have any clients that need
> updating. Maybe he has dhcp on the DC too and will update in situ? But
> wait, this originated as a sssd ddns update problem. Anyway, it's far
> too hot over here for surmising. Everyone else has gone to the bar:(
> Cheers,
> Steve

Hi, I think that the OP is a bit confused and for some reason is trying 
to get sssd to update the dns record for the DC, just why escapes me ;-)

If he has dhcp on the server, then sssd will not work. I also agree that 
he needs to get clients up and running and go from there.


>>>> i have no client configured yet.
>>> OK. Time to configure one, install sssd with the ad backend and test
>>> ddns and nsupdate from there.
>>> HTH
>>> Steve
>>>> shadrock

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