[Samba] Unable to rejoin domain, LDAP error 50

[Rowland Penny]

On Sun, 08 Apr 2018 17:04:02 +0200
Kris via samba <samba at lists.samba.org> wrote:

> > AH, light dawns ;-)
> > 
> > Your python doesn't know where all the python modules are,
> > investigate on how to set 'PYTHONPATH' on Centos.
> > 
> > Rowland
> 
> That did the trick. Thank you.
> But unfortunately...
> 
> [root at dc bin]# ./samba_upgradeprovision --realm=DOMAIN.NET.PL -U 
> Administrator
> Found 5 domain controllers. For the moment upgradeprovision is not
> able to handle an upgrade on a domain with more than one DC. Please
> demote the other DC(s) before upgrading
> Sanity checks for the upgrade have failed. Check the messages and 
> correct the errors before rerunning upgradeprovision
> 
> Is there any other way to increase KVNO, or I should try with demote
> and rejoin the main DC (with FSMO roles transter)?
> 
> Regards,
> Kris
> 

Bit of a catch 22 situation here, You want to join a DC but cannot, but
a potential fix wants you to remove most of the DCs but doesn't
guarantee you will be able to re-join them :-(

Sorry, but I have run out of ideas for the moment, let me think about
it.

Rowland