samba - Sep 2016 - Migrating samba4 dc from an instance with static/external dns to a fresh install with dynamic/internal dns

> 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

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

> On 8 Sep 2016, at 14:04, Rowland Penny via samba <samba at
lists.samba.org> wrote:
> 
> 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.
> 
Hi Rowland,

DC2 does not exist yet. I’m assuming that I should not provision it first, but
run domain join and then
samba_upgradedns after the join?

Cheers

L