[Samba] Make new server the "master"

Rowland penny rpenny at samba.org
Sat Sep 5 17:25:29 UTC 2020

On 05/09/2020 17:54, Peter Pollock via samba wrote:
> Please forgive me, I'm not sure what terminology to use here so this
> question may sound wrong.
> I have built two servers samba servers with a new domain. They replicate
> happily and I can seem to do everything I could ever want on them.
> DC01 holds all the FSMO roles and, as the first one built, acts as the
> "master" for DNS. Nothing works well on either server if DC01 is not at the
> top of the hosts file.
Both DC's are dns masters, it is known as multi-master. Each DC should 
use its own ipaddress for its nameserver in /etc/resolv.conf, so 
something is wrong if it doesn't work.
> But this is in a temporary environment and what I'd like to do is build two
> production servers, connect them to this AD domain, get them working and
> then have them take over all the FSMO roles and for one of them to become
> the master for DNS so that I can switch off these two test servers I have
> built.
No, you lost me there, you will have two good DC's and you will add 
another two good DC's and then turn off the first two, why ?
> My question is, what do I have to do to make another server the "master"?
> is it just transferring the FSMO roles or is there something else (apart
> from updating the host files on all the live servers)?

There is no concept of a 'master' in AD, all DC's are equal except for 
the FSMO roles and they can be on any DC, in fact, if you had seven 
DC's, you could have an FSMO role on each. You can transfer all the 
roles to any DC, but it wouldn't make it the 'master', because there is 
no master.


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