Upgrade from S3 to a Samba4 DC [with LDAPSAM]

[Adam Tauno Williams]

Quoting Adam Tauno Williams <awilliam at whitemice.org>:
> Quoting Adam Tauno Williams <awilliam at whitemice.org>
>> Quoting Andrew Bartlett <abartlet at samba.org>:
>>> The command has also been renamed in preparation for the Samba 4.0 alpha
>>> 17 release, it is now 'samba domain samba3upgrade'.
>> I'm puzzled by how to read that.  Does that mean I use the "samba"  
>> program to invoke the upgrade?  After a git pull the previous  
>> upgrade script is gone;  but the syntax to get the same  
>> functionality doesn't seem obvious.
>> /opt/s4/sbin/samba domain samba3upgrade --help
>> doesn't provide any insight.
> Ah ha!  You meant "samba-tool domain samba3upgrade"


smbclient --version
Version 4.0.0alpha18-GIT-fa5475e

This works, with one bug.  It doesn't generate an Administrator  
password (which the previous script would auto-generate one).

$ export PATH=$PATH:/opt/s4/bin:/opt/s4/sbin
$ samba-tool domain samba3upgrade --libdir=/tmp/x /tmp/x/smb.conf
....
Server Role:           domain controller
Hostname:              BARBEL
NetBIOS Domain:        BACKBONE
DNS Domain:            micore.us
DOMAIN SID:            S-1-5-21-2037442776-**************
Admin password:        None  <<<< ????
Importing WINS database
Importing Account policy
....

Which then leaves me puzzled how to set an administrator password.

"samba-tool domain samba3upgrade --help" doesn't mention a parameter  
to predetermine one.

"samba-tool user password --username=administrator" prompts for a  
password.  Entering a blank password doesn't seem to explicitly fail  
but the operation fails with -

ERROR: Failed to change password : Connection to SAMR pipe of PDC of  
domain 'BACKBONE' failed: NT_STATUS_OBJECT_NAME_NOT_FOUND