[Samba] GPO issues - getting SYSVOL cleaned up again

Stefan G. Weichinger lists at xunil.at
Wed Jul 31 11:49:33 UTC 2019


Am 31.07.19 um 13:37 schrieb L.P.H. van Belle via samba:
> So if i understand correctly. 
> You removed : /var/lib/samba/private/dns_update_cache 
> 
> Stopped samba and started samba and you got the dns A for hostname DC back
> in  /var/lib/samba/private/dns_update_cache ?? 

Yes!

repeated that once more now. Same result.

> Hmm.. 
>> SOA contains "dc.mydomain.at" still ..
> Change the SOA to the Other DC. ( as in, not DC, but DC2 ) 

edited

> Verify the DNS A ptr GUID again on DC2 also. To be sure. 

looks good to ma

> On DC run : samba_dnsupdate --verbose 
> Post this output. 
+

It immediately starts to fail like:

# samba_dnsupdate --verbose
IPs: ['192.168.16.205']
Looking for DNS entry A dc.mydomain.at 192.168.16.205 as dc.mydomain.at.
The DNS entry A dc.mydomain.at 192.168.16.205, queried as
dc.mydomain.at. does not exist
need update: A dc.mydomain.at 192.168.16.205
Looking for DNS entry A mydomain.at 192.168.16.205 as mydomain.at.
Looking for DNS entry SRV _ldap._tcp.mydomain.at dc.mydomain.at 389 as
_ldap._tcp.mydomain.at.
Checking 0 100 389 pre01svdeb03.mydomain.at. against SRV
_ldap._tcp.mydomain.at dc.mydomain.at 389
Checking 0 100 389 pre01svdeb02.mydomain.at. against SRV
_ldap._tcp.mydomain.at dc.mydomain.at 389
Lookup of _ldap._tcp.mydomain.at. succeeded, but we failed to find a
matching DNS entry for SRV _ldap._tcp.mydomain.at dc.mydomain.at 389
need update: SRV _ldap._tcp.mydomain.at dc.mydomain.at 389
Looking for DNS entry SRV _ldap._tcp.dc._msdcs.mydomain.at
dc.mydomain.at 389 as _ldap._tcp.dc._msdcs.mydomain.at.
Checking 0 100 389 pre01svdeb03.mydomain.at. against SRV
_ldap._tcp.dc._msdcs.mydomain.at dc.mydomain.at 389
Checking 0 100 389 pre01svdeb02.mydomain.at. against SRV
_ldap._tcp.dc._msdcs.mydomain.at dc.mydomain.at 389
Lookup of _ldap._tcp.dc._msdcs.mydomain.at. succeeded, but we failed to
find a matching DNS entry for SRV _ldap._tcp.dc._msdcs.mydomain.at
dc.mydomain.at 389
need update: SRV _ldap._tcp.dc._msdcs.mydomain.at dc.mydomain.at 389
Looking for DNS entry SRV
_ldap._tcp.317d1ccc-8df7-4ec6-9a6b-031a060da9b7.domains._msdcs.mydomain.at
dc.mydomain.at 389 as
_ldap._tcp.317d1ccc-8df7-4ec6-9a6b-031a060da9b7.domains._msdcs.mydomain.at.
Checking 0 100 389 pre01svdeb03.mydomain.at. against SRV
_ldap._tcp.317d1ccc-8df7-4ec6-9a6b-031a060da9b7.domains._msdcs.mydomain.at
dc.mydomain.at 389
Checking 0 100 389 pre01svdeb02.mydomain.at. against SRV
_ldap._tcp.317d1ccc-8df7-4ec6-9a6b-031a060da9b7.domains._msdcs.mydomain.at
dc.mydomain.at 389
Lookup of
_ldap._tcp.317d1ccc-8df7-4ec6-9a6b-031a060da9b7.domains._msdcs.mydomain.at.
succeeded, but we failed to find a matching DNS entry for SRV
_ldap._tcp.317d1ccc-8df7-4ec6-9a6b-031a060da9b7.domains._msdcs.mydomain.at
dc.mydomain.at 389
need update: SRV
_ldap._tcp.317d1ccc-8df7-4ec6-9a6b-031a060da9b7.domains._msdcs.mydomain.at
dc.mydomain.at 389
Looking for DNS entry SRV _kerberos._tcp.mydomain.at dc.mydomain.at 88
as _kerberos._tcp.mydomain.at.
Checking 0 100 88 pre01svdeb03.mydomain.at. against SRV
_kerberos._tcp.mydomain.at dc.mydomain.at 88
Checking 0 100 88 pre01svdeb02.mydomain.at. against SRV
_kerberos._tcp.mydomain.at dc.mydomain.at 88
Lookup of _kerberos._tcp.mydomain.at. succeeded, but we failed to find a
matching DNS entry for SRV _kerberos._tcp.mydomain.at dc.mydomain.at 88
need update: SRV _kerberos._tcp.mydomain.at dc.mydomain.at 88
Looking for DNS entry SRV _kerberos._udp.mydomain.at dc.mydomain.at 88
as _kerberos._udp.mydomain.at.
Checking 0 100 88 pre01svdeb03.mydomain.at. against SRV
_kerberos._udp.mydomain.at dc.mydomain.at 88
Checking 0 100 88 pre01svdeb02.mydomain.at. against SRV
_kerberos._udp.mydomain.at dc.mydomain.at 88
Lookup of _kerberos._udp.mydomain.at. succeeded, but we failed to find a
matching DNS entry for SRV _kerberos._udp.mydomain.at dc.mydomain.at 88
need update: SRV _kerberos._udp.mydomain.at dc.mydomain.at 88
Looking for DNS entry SRV _kerberos._tcp.dc._msdcs.mydomain.at
dc.mydomain.at 88 as _kerberos._tcp.dc._msdcs.mydomain.at.
Checking 0 100 88 pre01svdeb03.mydomain.at. against SRV
_kerberos._tcp.dc._msdcs.mydomain.at dc.mydomain.at 88
Checking 0 100 88 pre01svdeb02.mydomain.at. against SRV
_kerberos._tcp.dc._msdcs.mydomain.at dc.mydomain.at 88
Lookup of _kerberos._tcp.dc._msdcs.mydomain.at. succeeded, but we failed
to find a matching DNS entry for SRV
_kerberos._tcp.dc._msdcs.mydomain.at dc.mydomain.at 88
need update: SRV _kerberos._tcp.dc._msdcs.mydomain.at dc.mydomain.at 88
Looking for DNS entry SRV _kpasswd._tcp.mydomain.at dc.mydomain.at 464
as _kpasswd._tcp.mydomain.at.
Checking 0 100 464 pre01svdeb03.mydomain.at. against SRV
_kpasswd._tcp.mydomain.at dc.mydomain.at 464
Checking 0 100 464 pre01svdeb02.mydomain.at. against SRV
_kpasswd._tcp.mydomain.at dc.mydomain.at 464
Lookup of _kpasswd._tcp.mydomain.at. succeeded, but we failed to find a
matching DNS entry for SRV _kpasswd._tcp.mydomain.at dc.mydomain.at 464
need update: SRV _kpasswd._tcp.mydomain.at dc.mydomain.at 464
Looking for DNS entry SRV _kpasswd._udp.mydomain.at dc.mydomain.at 464
as _kpasswd._udp.mydomain.at.
Checking 0 100 464 pre01svdeb03.mydomain.at. against SRV
_kpasswd._udp.mydomain.at dc.mydomain.at 464
Checking 0 100 464 pre01svdeb02.mydomain.at. against SRV
_kpasswd._udp.mydomain.at dc.mydomain.at 464
Lookup of _kpasswd._udp.mydomain.at. succeeded, but we failed to find a
matching DNS entry for SRV _kpasswd._udp.mydomain.at dc.mydomain.at 464
need update: SRV _kpasswd._udp.mydomain.at dc.mydomain.at 464
Looking for DNS entry CNAME
e5922d4b-9bf0-4c79-b256-ff5f75a3e4f4._msdcs.mydomain.at dc.mydomain.at
as e5922d4b-9bf0-4c79-b256-ff5f75a3e4f4._msdcs.mydomain.at.
Lookup of e5922d4b-9bf0-4c79-b256-ff5f75a3e4f4._msdcs.mydomain.at.
succeeded, but we failed to find a matching DNS entry for CNAME
e5922d4b-9bf0-4c79-b256-ff5f75a3e4f4._msdcs.mydomain.at dc.mydomain.at
need update: CNAME
e5922d4b-9bf0-4c79-b256-ff5f75a3e4f4._msdcs.mydomain.at dc.mydomain.at
Looking for DNS entry SRV
_ldap._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 389
as _ldap._tcp.Default-First-Site-Name._sites.mydomain.at.
Checking 0 100 389 pre01svdeb03.mydomain.at. against SRV
_ldap._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 389
Checking 0 100 389 pre01svdeb02.mydomain.at. against SRV
_ldap._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 389
Lookup of _ldap._tcp.Default-First-Site-Name._sites.mydomain.at.
succeeded, but we failed to find a matching DNS entry for SRV
_ldap._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 389
need update: SRV _ldap._tcp.Default-First-Site-Name._sites.mydomain.at
dc.mydomain.at 389
Looking for DNS entry SRV
_ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 389 as
_ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at.
Checking 0 100 389 pre01svdeb03.mydomain.at. against SRV
_ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 389
Checking 0 100 389 pre01svdeb02.mydomain.at. against SRV
_ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 389
Lookup of
_ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at.
succeeded, but we failed to find a matching DNS entry for SRV
_ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 389
need update: SRV
_ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 389
Looking for DNS entry SRV
_kerberos._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at
88 as _kerberos._tcp.Default-First-Site-Name._sites.mydomain.at.
Checking 0 100 88 pre01svdeb03.mydomain.at. against SRV
_kerberos._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 88
Checking 0 100 88 pre01svdeb02.mydomain.at. against SRV
_kerberos._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 88
Lookup of _kerberos._tcp.Default-First-Site-Name._sites.mydomain.at.
succeeded, but we failed to find a matching DNS entry for SRV
_kerberos._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 88
need update: SRV
_kerberos._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 88
Looking for DNS entry SRV
_kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 88 as
_kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at.
Checking 0 100 88 pre01svdeb03.mydomain.at. against SRV
_kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 88
Checking 0 100 88 pre01svdeb02.mydomain.at. against SRV
_kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 88
Lookup of
_kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at.
succeeded, but we failed to find a matching DNS entry for SRV
_kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 88
need update: SRV
_kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 88
Looking for DNS entry SRV _ldap._tcp.pdc._msdcs.mydomain.at
dc.mydomain.at 389 as _ldap._tcp.pdc._msdcs.mydomain.at.
Checking 0 100 389 pre01svdeb02.mydomain.at. against SRV
_ldap._tcp.pdc._msdcs.mydomain.at dc.mydomain.at 389
Lookup of _ldap._tcp.pdc._msdcs.mydomain.at. succeeded, but we failed to
find a matching DNS entry for SRV _ldap._tcp.pdc._msdcs.mydomain.at
dc.mydomain.at 389
need update: SRV _ldap._tcp.pdc._msdcs.mydomain.at dc.mydomain.at 389
Looking for DNS entry A gc._msdcs.mydomain.at 192.168.16.205 as
gc._msdcs.mydomain.at.
Looking for DNS entry SRV _gc._tcp.mydomain.at dc.mydomain.at 3268 as
_gc._tcp.mydomain.at.
Checking 0 100 3268 pre01svdeb03.mydomain.at. against SRV
_gc._tcp.mydomain.at dc.mydomain.at 3268
Checking 0 100 3268 pre01svdeb02.mydomain.at. against SRV
_gc._tcp.mydomain.at dc.mydomain.at 3268
Lookup of _gc._tcp.mydomain.at. succeeded, but we failed to find a
matching DNS entry for SRV _gc._tcp.mydomain.at dc.mydomain.at 3268
need update: SRV _gc._tcp.mydomain.at dc.mydomain.at 3268
Looking for DNS entry SRV _ldap._tcp.gc._msdcs.mydomain.at
dc.mydomain.at 3268 as _ldap._tcp.gc._msdcs.mydomain.at.
Checking 0 100 3268 pre01svdeb03.mydomain.at. against SRV
_ldap._tcp.gc._msdcs.mydomain.at dc.mydomain.at 3268
Checking 0 100 3268 pre01svdeb02.mydomain.at. against SRV
_ldap._tcp.gc._msdcs.mydomain.at dc.mydomain.at 3268
Lookup of _ldap._tcp.gc._msdcs.mydomain.at. succeeded, but we failed to
find a matching DNS entry for SRV _ldap._tcp.gc._msdcs.mydomain.at
dc.mydomain.at 3268
need update: SRV _ldap._tcp.gc._msdcs.mydomain.at dc.mydomain.at 3268
Looking for DNS entry SRV
_gc._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 3268
as _gc._tcp.Default-First-Site-Name._sites.mydomain.at.
Checking 0 100 3268 pre01svdeb03.mydomain.at. against SRV
_gc._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 3268
Checking 0 100 3268 pre01svdeb02.mydomain.at. against SRV
_gc._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 3268
Lookup of _gc._tcp.Default-First-Site-Name._sites.mydomain.at.
succeeded, but we failed to find a matching DNS entry for SRV
_gc._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 3268
need update: SRV _gc._tcp.Default-First-Site-Name._sites.mydomain.at
dc.mydomain.at 3268
Looking for DNS entry SRV
_ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.mydomain.at
dc.mydomain.at 3268 as
_ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.mydomain.at.
Checking 0 100 3268 pre01svdeb03.mydomain.at. against SRV
_ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.mydomain.at
dc.mydomain.at 3268
Checking 0 100 3268 pre01svdeb02.mydomain.at. against SRV
_ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.mydomain.at
dc.mydomain.at 3268
Lookup of
_ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.mydomain.at.
succeeded, but we failed to find a matching DNS entry for SRV
_ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.mydomain.at
dc.mydomain.at 3268
need update: SRV
_ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.mydomain.at
dc.mydomain.at 3268
Looking for DNS entry A DomainDnsZones.mydomain.at 192.168.16.205 as
DomainDnsZones.mydomain.at.
Looking for DNS entry SRV _ldap._tcp.DomainDnsZones.mydomain.at
dc.mydomain.at 389 as _ldap._tcp.DomainDnsZones.mydomain.at.
Checking 0 100 389 pre01svdeb03.mydomain.at. against SRV
_ldap._tcp.DomainDnsZones.mydomain.at dc.mydomain.at 389
Checking 0 100 389 pre01svdeb02.mydomain.at. against SRV
_ldap._tcp.DomainDnsZones.mydomain.at dc.mydomain.at 389
Lookup of _ldap._tcp.DomainDnsZones.mydomain.at. succeeded, but we
failed to find a matching DNS entry for SRV
_ldap._tcp.DomainDnsZones.mydomain.at dc.mydomain.at 389
need update: SRV _ldap._tcp.DomainDnsZones.mydomain.at dc.mydomain.at 389
Looking for DNS entry SRV
_ldap._tcp.Default-First-Site-Name._sites.DomainDnsZones.mydomain.at
dc.mydomain.at 389 as
_ldap._tcp.Default-First-Site-Name._sites.DomainDnsZones.mydomain.at.
Checking 0 100 389 pre01svdeb03.mydomain.at. against SRV
_ldap._tcp.Default-First-Site-Name._sites.DomainDnsZones.mydomain.at
dc.mydomain.at 389
Checking 0 100 389 pre01svdeb02.mydomain.at. against SRV
_ldap._tcp.Default-First-Site-Name._sites.DomainDnsZones.mydomain.at
dc.mydomain.at 389
Lookup of
_ldap._tcp.Default-First-Site-Name._sites.DomainDnsZones.mydomain.at.
succeeded, but we failed to find a matching DNS entry for SRV
_ldap._tcp.Default-First-Site-Name._sites.DomainDnsZones.mydomain.at
dc.mydomain.at 389
need update: SRV
_ldap._tcp.Default-First-Site-Name._sites.DomainDnsZones.mydomain.at
dc.mydomain.at 389
Looking for DNS entry A ForestDnsZones.mydomain.at 192.168.16.205 as
ForestDnsZones.mydomain.at.
Looking for DNS entry SRV _ldap._tcp.ForestDnsZones.mydomain.at
dc.mydomain.at 389 as _ldap._tcp.ForestDnsZones.mydomain.at.
Checking 0 100 389 pre01svdeb03.mydomain.at. against SRV
_ldap._tcp.ForestDnsZones.mydomain.at dc.mydomain.at 389
Checking 0 100 389 pre02svdeb02.mydomain.at. against SRV
_ldap._tcp.ForestDnsZones.mydomain.at dc.mydomain.at 389
Lookup of _ldap._tcp.ForestDnsZones.mydomain.at. succeeded, but we
failed to find a matching DNS entry for SRV
_ldap._tcp.ForestDnsZones.mydomain.at dc.mydomain.at 389
need update: SRV _ldap._tcp.ForestDnsZones.mydomain.at dc.mydomain.at 389
Looking for DNS entry SRV
_ldap._tcp.Default-First-Site-Name._sites.ForestDnsZones.mydomain.at
dc.mydomain.at 389 as
_ldap._tcp.Default-First-Site-Name._sites.ForestDnsZones.mydomain.at.
Checking 0 100 389 pre01svdeb03.mydomain.at. against SRV
_ldap._tcp.Default-First-Site-Name._sites.ForestDnsZones.mydomain.at
dc.mydomain.at 389
Checking 0 100 389 pre02svdeb02.mydomain.at. against SRV
_ldap._tcp.Default-First-Site-Name._sites.ForestDnsZones.mydomain.at
dc.mydomain.at 389
Lookup of
_ldap._tcp.Default-First-Site-Name._sites.ForestDnsZones.mydomain.at.
succeeded, but we failed to find a matching DNS entry for SRV
_ldap._tcp.Default-First-Site-Name._sites.ForestDnsZones.mydomain.at
dc.mydomain.at 389
need update: SRV
_ldap._tcp.Default-First-Site-Name._sites.ForestDnsZones.mydomain.at
dc.mydomain.at 389
23 DNS updates and 0 DNS deletes needed
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
update(nsupdate): A dc.mydomain.at 192.168.16.205
Calling nsupdate for A dc.mydomain.at 192.168.16.205 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV _ldap._tcp.mydomain.at dc.mydomain.at 389
Calling nsupdate for SRV _ldap._tcp.mydomain.at dc.mydomain.at 389 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV _ldap._tcp.dc._msdcs.mydomain.at dc.mydomain.at 389
Calling nsupdate for SRV _ldap._tcp.dc._msdcs.mydomain.at dc.mydomain.at
389 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV
_ldap._tcp.317d1ccc-8df7-4ec6-9a6b-031a060da9b7.domains._msdcs.mydomain.at
dc.mydomain.at 389
Calling nsupdate for SRV
_ldap._tcp.317d1ccc-8df7-4ec6-9a6b-031a060da9b7.domains._msdcs.mydomain.at
dc.mydomain.at 389 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV _kerberos._tcp.mydomain.at dc.mydomain.at 88
Calling nsupdate for SRV _kerberos._tcp.mydomain.at dc.mydomain.at 88 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV _kerberos._udp.mydomain.at dc.mydomain.at 88
Calling nsupdate for SRV _kerberos._udp.mydomain.at dc.mydomain.at 88 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV _kerberos._tcp.dc._msdcs.mydomain.at dc.mydomain.at 88
Calling nsupdate for SRV _kerberos._tcp.dc._msdcs.mydomain.at
dc.mydomain.at 88 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV _kpasswd._tcp.mydomain.at dc.mydomain.at 464
Calling nsupdate for SRV _kpasswd._tcp.mydomain.at dc.mydomain.at 464 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV _kpasswd._udp.mydomain.at dc.mydomain.at 464
Calling nsupdate for SRV _kpasswd._udp.mydomain.at dc.mydomain.at 464 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): CNAME
e5922d4b-9bf0-4c79-b256-ff5f75a3e4f4._msdcs.mydomain.at dc.mydomain.at
Calling nsupdate for CNAME
e5922d4b-9bf0-4c79-b256-ff5f75a3e4f4._msdcs.mydomain.at dc.mydomain.at (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV
_ldap._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 389
Calling nsupdate for SRV
_ldap._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 389
(add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV
_ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 389
Calling nsupdate for SRV
_ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 389 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV
_kerberos._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 88
Calling nsupdate for SRV
_kerberos._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at
88 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV
_kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 88
Calling nsupdate for SRV
_kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.mydomain.at
dc.mydomain.at 88 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV _ldap._tcp.pdc._msdcs.mydomain.at dc.mydomain.at 389
Calling nsupdate for SRV _ldap._tcp.pdc._msdcs.mydomain.at
dc.mydomain.at 389 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV _gc._tcp.mydomain.at dc.mydomain.at 3268
Calling nsupdate for SRV _gc._tcp.mydomain.at dc.mydomain.at 3268 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV _ldap._tcp.gc._msdcs.mydomain.at dc.mydomain.at 3268
Calling nsupdate for SRV _ldap._tcp.gc._msdcs.mydomain.at dc.mydomain.at
3268 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV
_gc._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 3268
Calling nsupdate for SRV
_gc._tcp.Default-First-Site-Name._sites.mydomain.at dc.mydomain.at 3268
(add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV
_ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.mydomain.at
dc.mydomain.at 3268
Calling nsupdate for SRV
_ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.mydomain.at
dc.mydomain.at 3268 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV _ldap._tcp.DomainDnsZones.mydomain.at
dc.mydomain.at 389
Calling nsupdate for SRV _ldap._tcp.DomainDnsZones.mydomain.at
dc.mydomain.at 389 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV
_ldap._tcp.Default-First-Site-Name._sites.DomainDnsZones.mydomain.at
dc.mydomain.at 389
Calling nsupdate for SRV
_ldap._tcp.Default-First-Site-Name._sites.DomainDnsZones.mydomain.at
dc.mydomain.at 389 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV _ldap._tcp.ForestDnsZones.mydomain.at
dc.mydomain.at 389
Calling nsupdate for SRV _ldap._tcp.ForestDnsZones.mydomain.at
dc.mydomain.at 389 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
update(nsupdate): SRV
_ldap._tcp.Default-First-Site-Name._sites.ForestDnsZones.mydomain.at
dc.mydomain.at 389
Calling nsupdate for SRV
_ldap._tcp.Default-First-Site-Name._sites.ForestDnsZones.mydomain.at
dc.mydomain.at 389 (add)
Successfully obtained Kerberos ticket to DNS/dc.mydomain.at as DC$
couldn't get address for 'dc.mydomain.at': not found
Failed nsupdate: 1
Failed update of 23 entries

Maybe also informative:

# systemctl status samba-ad-dc.service

Jul 31 13:42:20 pre01svdeb02 samba[32029]: task[dnsupdate][32029]:
[2019/07/31 13:42:20.259104,  0]
../lib/util/util_runcmd.c:327(samba_runcmd_io_handler)
Jul 31 13:42:20 pre01svdeb02 samba[32029]: task[dnsupdate][32029]:
/usr/sbin/samba_dnsupdate: couldn't get address for 'dc.pilsbacher.at':
not found
Jul 31 13:42:20 pre01svdeb02 samba[32029]: task[dnsupdate][32029]:
[2019/07/31 13:42:20.295584,  0]
../lib/util/util_runcmd.c:327(samba_runcmd_io_handler)
Jul 31 13:42:20 pre01svdeb02 samba[32029]: task[dnsupdate][32029]:
/usr/sbin/samba_dnsupdate: couldn't get address for 'dc.pilsbacher.at':
not found
Jul 31 13:42:20 pre01svdeb02 samba[32029]: task[dnsupdate][32029]:
[2019/07/31 13:42:20.329049,  0]
../lib/util/util_runcmd.c:327(samba_runcmd_io_handler)
Jul 31 13:42:20 pre01svdeb02 samba[32029]: task[dnsupdate][32029]:
/usr/sbin/samba_dnsupdate: couldn't get address for 'dc.pilsbacher.at':
not found
Jul 31 13:42:20 pre01svdeb02 samba[32029]: task[dnsupdate][32029]:
[2019/07/31 13:42:20.365509,  0]
../lib/util/util_runcmd.c:327(samba_runcmd_io_handler)
Jul 31 13:42:20 pre01svdeb02 samba[32029]: task[dnsupdate][32029]:
/usr/sbin/samba_dnsupdate: couldn't get address for 'dc.pilsbacher.at':
not found
Jul 31 13:42:20 pre01svdeb02 samba[32029]: task[dnsupdate][32029]:
[2019/07/31 13:42:20.397700,  0]
../source4/dsdb/dns/dns_update.c:330(dnsupdate_nameupdate_done)
Jul 31 13:42:20 pre01svdeb02 samba[32029]: task[dnsupdate][32029]:
../source4/dsdb/dns/dns_update.c:330: Failed DNS update - with error code 23



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