[Samba] Migrating samba4 dc from an instance with static/external dns to a fresh install with dynamic/internal dns

[Rowland Penny]

On Thu, 8 Sep 2016 10:50:20 +0000
Lukasz Zalewski via samba <samba at lists.samba.org> wrote:

> 
> > On 8 Sep 2016, at 11:34, Rowland Penny via samba
> > <samba at lists.samba.org> wrote:
> > 
> > On Thu, 8 Sep 2016 07:19:34 +0000
> > Lukasz Zalewski via samba <samba at lists.samba.org> wrote:
> > 
> >> Dear list,
> >> 
> >> I want to migrate our existing samba4 dc with a static/external dns
> >> backend, to a new install with internal dynamic dns backend. 
> >> 
> >> Given:
> >> DC1 - existing samba4 dc with static/external dns running quite old
> >> build (to be updated to version 4.3 before the migration starts)
> >> DC2
> >> - new samba4 dc with internal dynamic dns (running 4.3 version)
> >> 
> > 
> > Transfer all FSMO roles to DC2, demote DC1, turn off DC1, re-install
> > DC1 with a different name, join it as a new DC.
> > 
> 
> Hi Rowland,
> My plan is to completely retire DC1 after this migration is completed.
> 
> What I’m not sure is how to perform the initial joining of the DC2
> given the current dns set-up.
> 
> Do I just join DC2 to the domain using samba-tool domain join  
> and then manually add the missing dns domain records (for bot DC1 and
> DC2) to DC2’s dns? Would that be enough?
> 
> My ultimate goal is to move the data over from DC1 to DC2 and also
> convert from the static/external dns set up to the internal/dynamic
> one.
> 
> Regards
> 
> Lukasz
> 

Does DC2 have all the required records ? if it does, then what I posted
earlier should work, but if you have missing dns records, then running
samba_upgradedns should create them.

Rowland