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Re: [Samba] Recurrent DNS issues after DC loss






On 06.06.2018 17:42, Rowland Penny via samba wrote:
On Wed, 6 Jun 2018 16:26:53 +0200
Ole Traupe via samba <samba@xxxxxxxxxxxxxxx> wrote:


On 06.06.2018 16:02, Rowland Penny via samba wrote:
On your DC, set the AD DNS domain in the domain and the IP of your
DC in the nameserver parameter of the /etc/resolv.conf file. For
example:

domain samdom.example.com
nameserver 10.99.0.1
So "domain" and not "search"? I had "search" set due to the result of
some discussion on the list.
DOH! no it should be search and it now says so on the DC wikipage.

I seem to remember having read here on the list, that it is no good
idea to mix samba versions in a domain. If there is sound advice to
do it anyways, I would be up for trying it. However, as I have
written above, I messed up the uid/gid ranges. To my understanding,
later versions of Samba (like 4.5) _require_ the ranges to comply
to the defaults as denoted by the wiki.
There is nothing to stop you using different versions on DCs and you
can do the same with Unix domain members, unless you are using the
'ad' backend  and are NOT using Domain Users as the users Unix
primary group.
Why and how would I _not_ do this?
Perhaps I should have been a little more precise, you shouldn't use
versions earlier than 4.6.0 with versions >= 4.6.0 on Unix domain
members, if you also set 'idmap config <DOMAIN> : unix_primary_group =
yes' on the >= 4.6.0 machines.

However, I wasn't able to remove the DC itself from Sites and Service
as well as from "Domain Controllers" in ADUC. I get "Windows cannot
delete object [...] because: The specified module could not be found."

You may have to remove it with ldbdelete, try an ldbsearch on the DC
first, if you can find it, ldbdelete should be able to delete it.

Rowland



Thank you for the clarifications and the additional advice. I will try that.

Ole


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