[Samba] Samba + BIND9 DLZ. DNS dosen't resolve FQDN, only short hostname

[Rowland Penny]

On Sat, 9 Feb 2019 09:12:28 +0100
Peter Tuharsky via samba <samba at lists.samba.org> wrote:

> Thank You Rowland. I did it like You say, killed avahi, added the
> record without domain suffix, but nothing changed, and the record
> seems no different compared to other records added with the suffix
> some time before.
> 
> My Samba DNS record looks like this (and I see nothing special in
> there):
> 
>    Name=, Records=3, Children=0
>      SOA: serial=39, refresh=900, retry=600, expire=86400,
> minttl=3600, ns=blacktux.interbronz.local.,
> email=hostmaster.interbronz.local. (flags=600000f0, serial=39,
> ttl=3600) NS: blacktux.interbronz.local. (flags=600000f0, serial=1,
> ttl=900) A: 10.20.1.1 (flags=600000f0, serial=3, ttl=900)
>    Name=_msdcs, Records=0, Children=0
>    Name=_sites, Records=0, Children=1
>    Name=_tcp, Records=0, Children=4
>    Name=_udp, Records=0, Children=2
>    Name=asus, Records=1, Children=0
>      A: 10.20.4.69 (flags=f0, serial=27, ttl=900)
>    Name=blacktux, Records=1, Children=0
>      A: 10.20.1.1 (flags=f0, serial=2, ttl=900)
>    Name=boss, Records=1, Children=0
>      A: 10.20.3.78 (flags=f0, serial=39, ttl=900)
>    Name=DomainDnsZones, Records=0, Children=2
>    Name=ForestDnsZones, Records=0, Children=2
>    Name=intelhd, Records=1, Children=0
>      A: 10.20.1.82 (flags=f0, serial=20, ttl=900)
>    Name=w7-virt, Records=1, Children=0
>      A: 10.10.10.102 (flags=f0, serial=21, ttl=900)
> 


Hmm, mine look different:

If I run (on a DC):

samba-tool dns query 127.0.0.1 samdom.example.com @ SOA

I get:

  Name=, Records=1, Children=0
    SOA: serial=3658, refresh=900, retry=600, expire=86400, minttl=3600, ns=dc4.samdom.example.com., email=hostmaster.samdom.example.com. (flags=600000f0, serial=3657, ttl=3600)
  Name=_sites, Records=0, Children=1
  Name=_tcp, Records=0, Children=5
  Name=_udp, Records=0, Children=2
  Name=EAP-WIN7, Records=0, Children=0
  Name=DomainDnsZones, Records=0, Children=2
  Name=ForestDnsZones, Records=0, Children=2
  Name=EAPDEV-PC, Records=0, Children=0
  Name=DC4, Records=0, Children=0
  Name=.................
  ...........
  and so on

The '_msdcs' record isn't there.
There are no 'A' records.

If I run (again on a DC):

ldbsearch --cross-ncs --show-binary -H '/var/lib/samba/private/sam.ldb'
-b
'DC=samdom.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samdom,DC=example,DC=com'
-s sub '(&(objectClass=dnsNode)(DC=@))'

NOTE: the above should all be on one line.

I get:

# record 1
dn: DC=@,DC=samdom.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samdom,DC=example,DC=com
objectClass: top
objectClass: dnsNode
instanceType: 4
whenCreated: 20151106115624.0Z
uSNCreated: 4060
showInAdvancedViewOnly: TRUE
name: @
objectGUID: 7ad014c4-c1e9-4cb4-9f0d-96d0272af23d
objectCategory: CN=Dns-Node,CN=Schema,CN=Configuration,DC=samdom,DC=example,DC=com
dc: @
whenChanged: 20190209090653.0Z
dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
        wDataLength              : 0x004f (79)
        wType                    : DNS_TYPE_SOA (6)
        version                  : 0x05 (5)
        rank                     : DNS_RANK_ZONE (240)
        flags                    : 0x0000 (0)
        dwSerial                 : 0x00000e4d (3661)
        dwTtlSeconds             : 0x00000e10 (3600)
        dwReserved               : 0x00000000 (0)
        dwTimeStamp              : 0x0037ec99 (3665049)
        data                     : union dnsRecordData(case 6)
        soa: struct dnsp_soa
            serial                   : 0x00000e4e (3662)
            refresh                  : 0x00000384 (900)
            retry                    : 0x00000258 (600)
            expire                   : 0x00015180 (86400)
            minimum                  : 0x00000e10 (3600)
            mname                    : dc4.samdom.example.com
            rname                    : hostmaster.samdom.example.com

dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
        wDataLength              : 0x001a (26)
        wType                    : DNS_TYPE_NS (2)
        version                  : 0x05 (5)
        rank                     : DNS_RANK_ZONE (240)
        flags                    : 0x0000 (0)
        dwSerial                 : 0x00000e4d (3661)
        dwTtlSeconds             : 0x00000384 (900)
        dwReserved               : 0x00000000 (0)
        dwTimeStamp              : 0x0037a459 (3646553)
        data                     : union dnsRecordData(case 2)
        ns                       : dc3.samdom.example.com

dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
        wDataLength              : 0x001a (26)
        wType                    : DNS_TYPE_NS (2)
        version                  : 0x05 (5)
        rank                     : DNS_RANK_ZONE (240)
        flags                    : 0x0000 (0)
        dwSerial                 : 0x00000e4d (3661)
        dwTtlSeconds             : 0x00000384 (900)
        dwReserved               : 0x00000000 (0)
        dwTimeStamp              : 0x0037ceba (3657402)
        data                     : union dnsRecordData(case 2)
        ns                       : dc4.samdom.example.com

dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
        wDataLength              : 0x0004 (4)
        wType                    : DNS_TYPE_A (1)
        version                  : 0x05 (5)
        rank                     : DNS_RANK_ZONE (240)
        flags                    : 0x0000 (0)
        dwSerial                 : 0x00000e4d (3661)
        dwTtlSeconds             : 0x00000384 (900)
        dwReserved               : 0x00000000 (0)
        dwTimeStamp              : 0x0037a459 (3646553)
        data                     : union dnsRecordData(case 1)
        ipv4                     : 192.168.0.7

dnsRecord:     NDR: struct dnsp_DnssrvRpcRecord
        wDataLength              : 0x0004 (4)
        wType                    : DNS_TYPE_A (1)
        version                  : 0x05 (5)
        rank                     : DNS_RANK_ZONE (240)
        flags                    : 0x0000 (0)
        dwSerial                 : 0x00000e4d (3661)
        dwTtlSeconds             : 0x00000384 (900)
        dwReserved               : 0x00000000 (0)
        dwTimeStamp              : 0x0037ceba (3657402)
        data                     : union dnsRecordData(case 1)
        ipv4                     : 192.168.0.6

uSNChanged: 402651
distinguishedName: DC=@,DC=samdom.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samdom,DC=example,DC=com

# returned 1 records
# 1 entries
# 0 referrals

Rowland