samba - Jul 2014 - LDAP/PDC migration to Samba4

Greetings, All!

I'm planning a migration to Samba 4 (for a long time, I admit, but I only
recently got a promise of funds for a new server... whew...), but I'm a
little
in the dark on how to arrange whole process.

Right now, the situation is imagined as follows:

Server A: LDAP/PDC/Samba3/NAT/DHCP/BIND/everything else.
Server B: New installation, x86_64, Samba4, would-be-replacement for Server A.
Local network: Win2k/WinXP/Win7 systems, with sparkles of iOS/Android/Win8.

Now, is there a way to transparently add the new server as a BDC, wait for
transfer, then flip a switch and make it primary controller?

If this process already described somewhere, I would really appreciate
not-too-deep-and-sidestepped guidelines.

I'm eternally thankful to rickyjones from ubuntuforums for his comprehensive
guide to setup LDAP+Samba3 PDC, nothing I've seen in the internet on the
subject have matched the quality of his article.

But with migration on hand right now, I'm in the dark... kind of.
I'm really don't want to recreate the domain from scratch. The amount of
users
that would be need to migrate/reconfigure/placate/fend off is just unbearable.


-- 
WBR,
Andrey Repin (anrdaemon at yandex.ru) 18.07.2014, <01:59>

Sorry for my terrible english...

Greetings, All!
> I'm planning a migration to Samba 4 (for a long time, I admit, but I
only
> recently got a promise of funds for a new server... whew...), but I'm a
little
> in the dark on how to arrange whole process.
I forgot to mention, I've found an article[1] on the Samba wiki, but it only
discuss upgrading of existing installation.

[1]
https://wiki.samba.org/index.php/Samba_Classic_Upgrade_(NT4-style_domain_to_AD)


--
WBR,
Andrey Repin (anrdaemon at yandex.ru) 18.07.2014, <04:08>

Sorry for my terrible english...

On Fri, 2014-07-18 at 02:12 +0400, Andrey Repin wrote:
> 
> I'm eternally thankful to rickyjones from ubuntuforums for his
comprehensive
> guide to setup LDAP+Samba3 PDC, nothing I've seen in the internet on
the
> subject have matched the quality of his article.
The only guide which comes anywhere near is openSUSE. A beginner can be
up in around 10 minutes, NT domain, LDAP, TLS:
http://digiplan.eu.org/ldap-samba-howto-v4.html

Greetings, All!

Greetings again, helpful people of the mailing list!
I'm looking for advice on the best course of action.

Right now, I've successfully run an upgrade of test system to Ubuntu 12.04
with little to no issues on relevant parts.
The system is currently running openldap-2.4.28 and Samba 3.6.3, with an
option to install Samba 4.0.

The logs show a number of error messages, such as
Nov 11 00:13:53 userl perl: pam_ldap: error trying to bind as user
"uid=root,ou=Users,dc=ccenter,dc=lan" (Invalid credentials)
but they appears to be harmless?

Now, should I upgrade to 14.04 with presumable newer Samba4 available from
main repo, or attempt Samba4 installation now and upgrade later?


--
WBR,
Andrey Repin (anrdaemon at yandex.ru) 11.11.2014, <00:47>

Sorry for my terrible english...