[Samba] Samba domain time sync woes (Debian Bookworm)

Peter Milesson miles at atmos.eu
Wed Aug 9 08:46:16 UTC 2023

On 09.08.2023 10:32, Rowland Penny via samba wrote:
> On 09/08/2023 09:26, Peter Milesson via samba wrote:
>> On 09.08.2023 10:08, Luis Peromarta via samba wrote:
>>> I had the impression (out of NTP/ chrony config of DCs) they were 
>>> getting time from upstream NTP servers …
>>> LP
>>> On 9 Aug 2023 at 09:52 +0200, samba at lists.samba.org, wrote:
>>>> the DCs get
>>>> their time from the DC with the PDC_Emulator FSMO role.
>> Hi,
>> I have checked up which one of my 2 DCs (Debian Bookworm, Samba 
>> 4.17.9) that has got the FSMO roles. The one with the FSMO roles does 
>> not supply time to the Windows client I checked. Doesn't it depend on 
>> which of the DCs that is listed first in the DNS list? Shouldn't any 
>> DC be able to supply time services, in case other ones are off line?
>> Well, this is nitpicking, but every bit of knowledge is precious.
>> Thanks for your comments.
>> Best regards,
>> Peter
> Windows clients can and will use any DC, The DCs are supposed to get 
> their time from the DC that holds the PDC_Emulator FSMO role.
> Trying reading this: 
> https://wiki.samba.org/index.php/Time_Synchronisation
> Paying particular attention to the pretty diagram.
> Rowland
Thanks for the link Rowland. But there is an ambiguity. Below the 
diagram, there is stated that "all other workstations get their time 
from any DC".  In the next sentence there is "Windows clients get their 
time from the PDC emulator DC". In my case, the Windows 10 client does 
not get the time from the DC with the PDC emulator role, which also 
contradicts the second statement.

Best regards,


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