[Samba] Recurrent DNS issues after DC loss

[Ole Traupe]

Hi list,

I have a domain in production on two sites (subnets, via "Sites and 
Services") with originally two DCs. One went down due to HDD (-> old 
hardware) error. Now, occasionally, clients cant access/find the file 
server (domain member). This does not occur on all clients at the same 
time, however, so I am rather sure it is not the file server itself, but 
a DNS problem.

I couldn't find anything diagnostic in the logs. Default log level was 
not informative, I think, while log level 10 I just could not 
handle/analyze properly.

Can someone recommend a log level? Should I look on the DC or on the 
file server?

Do I have to remove the offline DC completely from DNS and Sites and 
Services for this mess to stop?

I appreciate any advice.

Cheers,
Ole