samba - Oct 2024 - Best way to get the current PDC emulator master via DNS (Possible bug?)

On Sat, 19 Oct 2024 12:28:01 +0200
Luis Peromarta via samba <samba at lists.samba.org> wrote:
> OK, so I was thinking I should probably do some basic scripting to
> check pdc entries in dns as part of routine checks. To my surprise,
> in 2 managed installations, transferring the pdc role no longer
> creates the new dns entries.
> 
> Has anyone seen this ? Samba 4.20.5 bookworm back ports.
Transferring the PDC_Emulator FSMO role does not create the dns entry,
it is created by samba_dnsupdate, which is run every 10 minutes.

Rowland

Correct, I see them now. Thanks for clarifying.

On Oct 19, 2024 at 12:33 +0200, samba at lists.samba.org <samba at
lists.samba.org>, wrote:
>
> Transferring the PDC_Emulator FSMO role does not create the dns entry,
> it is created by samba_dnsupdate, which is run every 10 minutes.

Thanks Rowland for clarifying.

I am trying to build a??'samba-tool dns delete? command to delete the
record, but can?t quite figure it out.

host -t SRV _ldap._tcp.pdc._msdcs.mad.caopnato.es
_ldap._tcp.pdc._msdcs.mad.caponato.es has SRV record 0 100 389
dc1.mad.caponato.es.

samba-tool dns delete
dc1.mad.caponato.es??mad.caponato.es??_ldap._tcp.pdc._msdcs SRV
?dc1.mad.caponato.es 389 0 100" -U Administrator
ERROR(runtime): The record does not exist [WERR_DNS_ERROR_RECORD_DOES_NOT_EXIST]
- (9701, 'WERR_DNS_ERROR_RECORD_DOES_NOT_EXIST')

Any hint ? Thanks,

On Oct 19, 2024 at 12:33 +0200, samba at lists.samba.org <samba at
lists.samba.org>, wrote:
>
> Transferring the PDC_Emulator FSMO role does not create the dns entry,
> it is created by samba_dnsupdate, which is run every 10 minutes.