samba - Jun 2024 - Member server: Failed to join domain: failed to find DC for

All,

Doing some testing with 4.20.1 on a member server. I have no explanation for
this.

?Member? member is just a test machine, I joined to domain *with* net ads join,
no issues. A few minutes later ...

root at member:/etc/samba# net ads leave domain -U luis
Password for [MAD\luis]:
Deleted account for 'MEMBER' in realm 'MAD.MATER.INT'

root at member:/etc/samba# net ads join domain -U luis
Password for [MAD\luis]:
Failed to join domain: failed to find DC for domain domain - A domain controller
for this domain was not found.

root at member:/etc/samba# samba-tool domain join mad.mater.int -U luis
WARNING: Using passwords on command line is insecure. Installing the
setproctitle python module will hide these from shortly after program start.
Password for [MAD\luis]:
Joined domain mad.mater.int (S-1-5-21-2152908145-95474353-1514027631)


net ads join fail while samba-tool domain join works. ??

The usual suspects have been checked, I have not changed anything in the config.
Not that this is a very big issue, just out of curiosity.

LP

On Sat, 8 Jun 2024 17:41:57 +0100
Luis Peromarta via samba <samba at lists.samba.org> wrote:
> All,
> 
> Doing some testing with 4.20.1 on a member server. I have no
> explanation for this.
> 
> ?Member? member is just a test machine, I joined to domain *with* net
> ads join, no issues. A few minutes later ...
> 
> root at member:/etc/samba# net ads leave domain -U luis
> Password for [MAD\luis]:
> Deleted account for 'MEMBER' in realm 'MAD.MATER.INT'
> 
> root at member:/etc/samba# net ads join domain -U luis
> Password for [MAD\luis]:
> Failed to join domain: failed to find DC for domain domain - A domain
> controller for this domain was not found.
I have never run those commands like that, I normally run 'net ads join
-Uadministrator' or 'net ads leave -Uadministrator', I have never
specified the domain.
> 
> root at member:/etc/samba# samba-tool domain join mad.mater.int -U luis
> WARNING: Using passwords on command line is insecure. Installing the
> setproctitle python module will hide these from shortly after program
> start. Password for [MAD\luis]: Joined domain mad.mater.int
> (S-1-5-21-2152908145-95474353-1514027631)
> 
> 
> net ads join fail while samba-tool domain join works. ??
In my opinion neither should work, the command should be 'samba-tool
domain join mad.mater.int MEMBER' otherwise it will default to 'DC'.
> 
> The usual suspects have been checked, I have not changed anything in
> the config. Not that this is a very big issue, just out of curiosity.
> 
> LP
Rowland