[Samba] Reestablishing trust with PDC

Christ Schlacta lists at aarcane.org
Mon Jan 10 11:56:25 MST 2011

you haven't tried experimenting with backing up and restoring the samba 
password cache.  look in /var/*/samba and /var/*/*/samba for files 
related to the password cache to backup and restore.

On 1/10/2011 10:45, Devon Crouse wrote:
> I often change configurations in a home server environment, and have scripts
> to back up all config files etc. - on a fresh OS install I can quickly
> restore function of all the services I'm running.
> I'm using version 3.4.7 as a PDC on Ubuntu with 4 Windows 7 clients.  I can
> restore smb.conf which gets the file shares and server configuration back,
> but I lose the trust relationship with the clients and I can't figure out
> how to get it back (short of completely clearing all the profiles and
> dropping/adding to the domain.)  I'm making the following assumptions:
>   - There must be some sort of signature for the Samba/OS installation that
> changes
>   - This signature must be recorded in Windows somewhere for it to validate
> the relationship (like known_hosts)
> I've tried the following in just about every order you can imagine:
>   - Modifying/removing the profile registry entries in Windows
>   - Removing/restoring the user directory in Windows
>   - Removing/restoring the profile.v2 directory in Ubuntu
>   - Experimenting with various local policy settings in Windows
>   - Re-adding client to the domain
>   - Using smbpasswd to recreate the users
> There must be something I can backup/change to retain/reestablish the trust
> relationship without having to scrap all the user profiles?  Thanks in
> advance - all my reading so far has been of little help.

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