samba - Mar 2020 - Some Ubuntu stations can't logon when I upgraded Samba DC

On 19/03/2020 15:43, Denis Morejon via samba wrote:
> Hi:
>
> I have two DCs with debian 10 and Samba 4.7.4 working find. In my 
> network, I have different OSs workstations: W7, W10, Ubuntu and Mint.
>
> As the Samba version is too old, I wanted to upgrade first from 4.7.4 
> to 4.7.12 using the source code.
>
> But, as result, some Ubuntu workstations couldn't logon again
>
> The user's password was right because we have a web to probe users 
> using ldap. Even, we logon the user
> on other Windows machines and they logon ok.
Just upgrading the minor version shouldn't cause this, so can you post 
your smb.conf files from the DCs and an affected Ubuntu workstation.

Rowland

Hi:

I have two DCs with debian 10 and Samba 4.7.4 working find. In my 
network, I have different OSs workstations: W7, W10, Ubuntu and Mint.

They have been log-in every day without problem. And samba-tool dbcheck 
returns no error on both DCs.


As the Samba version is too old, I wanted to upgrade first from 4.7.4 to 
4.7.12 using the source code.

./configure

make

make install

Just as I did last time I compiled the? 4.7.4.

I stopped Samba on both DCs, compiled the new version (4.7.12) with no 
error on both DCs.

Then I started Samba on both DCs and typed this on DC1:

  samba-tool dbcheck --cross-ncs --fix

This time some objects were fixed automatically.

I ran this command in the second DC too.

I typed this command for the second time and It returned 0 error.

I restarted Samba service on both DC without problems.

But, as result, some Ubuntu workstations couldn't logon again

The user's password was right because we have a web to probe users using
ldap. Even, we logon the user
on other Windows machines and they logon ok.

What should be happening ?