samba - Jul 2019 - GPO issues - getting SYSVOL cleaned up again

On 31/07/2019 11:22, Stefan G. Weichinger via samba
wrote:
> Am 31.07.19 um 12:17 schrieb Rowland penny via samba:
>> On 31/07/2019 11:02, Stefan G. Weichinger via samba wrote:
>>> Am 31.07.19 um 11:58 schrieb L.P.H. van Belle via samba:
>>>> Restarted or stop-start, because there is a difference between
these.
>>>> You MUST use stop/start
>>> I read "restart" and did "systemctl restart"
;-)
>>>
>>> stop/start now on both
>>>
>>> no change
>>>
>>> But a trace of the problematic name:
>>>
>>> task[dnsupdate][25128]:?? /usr/sbin/samba_dnsupdate: couldn't
get
>>> address for 'dc.mydomain.at': not found
>>>
>> I take it that 'dc.mydomain.at' is the FQDN of the DC you
stopped then
>> started, if so, it looks like the DC does not know its own record. What
>> does 'host -t A dc.mydomain.at' return ?
> "dc" was the old name a few years ago
>
> I try to get rid of that now.
>
> host -t A dc... not found. We want that in the end.
>
>
Ah, my mistake. The samba_dnsupdate script uses a file 'dns_update_list 
to check for records and create any missing ones, this uses 
'${HOSTNAME}', so it looks like somewhere 'dc' still exists.

Rowland

Am 31.07.19 um 12:32 schrieb Rowland penny via samba:
> On 31/07/2019 11:22, Stefan G. Weichinger via samba wrote:
>> "dc" was the old name a few years ago
>>
>> I try to get rid of that now.
>>
>> host -t A dc... not found. We want that in the end.
>>
>>
> Ah, my mistake. The samba_dnsupdate script uses a file 'dns_update_list
> to check for records and create any missing ones, this uses
> '${HOSTNAME}', so it looks like somewhere 'dc' still
exists.
definitely, see the rgrep ;-)

On 31/07/2019 11:40, Stefan G. Weichinger via samba
wrote:
> Am 31.07.19 um 12:32 schrieb Rowland penny via samba:
>> On 31/07/2019 11:22, Stefan G. Weichinger via samba wrote:
>>> "dc" was the old name a few years ago
>>>
>>> I try to get rid of that now.
>>>
>>> host -t A dc... not found. We want that in the end.
>>>
>>>
>> Ah, my mistake. The samba_dnsupdate script uses a file
'dns_update_list
>> to check for records and create any missing ones, this uses
>> '${HOSTNAME}', so it looks like somewhere 'dc' still
exists.
> definitely, see the rgrep ;-)
>
Rename the cache file '/var/lib/samba/private/dns_update_cache', stop 
then restart Samba, this should cause the cache to be recreated, 
hopefully without 'dc' ;-)

Rowland

Hai, 

I just renamed that file to .old on one of my DC's. 

systemctl stop samba-ad-dc && systemctl start samba-ad-dc
New file is created yes, so this looks like the solution. 

Stefan, once this is done. 

Verify again the servers in :
 Sites - Default-First-Site-Name - Servers 
Windows DNS tool, zone 

your.dom.tld. For the A 
IN-ARPA .. For the PTR. 
_msdcs.your.dom.tld. For GUIDs. 

If its all good now, give it a few min, then verify the samba ad replication
again.

Greetz, 

Louis

> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens 
> Rowland penny via samba
> Verzonden: woensdag 31 juli 2019 12:50
> Aan: samba at lists.samba.org
> Onderwerp: Re: [Samba] GPO issues - getting SYSVOL cleaned up again
> 
> On 31/07/2019 11:40, Stefan G. Weichinger via samba wrote:
> > Am 31.07.19 um 12:32 schrieb Rowland penny via samba:
> >> On 31/07/2019 11:22, Stefan G. Weichinger via samba wrote:
> >>> "dc" was the old name a few years ago
> >>>
> >>> I try to get rid of that now.
> >>>
> >>> host -t A dc... not found. We want that in the end.
> >>>
> >>>
> >> Ah, my mistake. The samba_dnsupdate script uses a file 
> 'dns_update_list
> >> to check for records and create any missing ones, this uses
> >> '${HOSTNAME}', so it looks like somewhere 'dc'
still exists.
> > definitely, see the rgrep ;-)
> >
> Rename the cache file '/var/lib/samba/private/dns_update_cache',
stop
> then restart Samba, this should cause the cache to be recreated, 
> hopefully without 'dc' ;-)
> 
> Rowland
> 
> 
> 
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