DNS server no in sync with database?

[Amitay Isaacs]

Hi Andrew,

On Thu, Feb 26, 2015 at 4:06 PM, Andrew Bartlett <abartlet at samba.org> wrote:

> Kai,
>
> Can you help me understand what is going on with the internal DNS server
> here?
>
> I get different results between ldbsearch and a DNS lookup:
>
> ubuntu at ad-dc-1:~/samba$ host gc._msdcs.samba.example.com 127.0.0.1
> Using domain server:
> Name: 127.0.0.1
> Address: 127.0.0.1#53
> Aliases:
>
> gc._msdcs.samba.example.com has address 10.0.2.6
> gc._msdcs.samba.example.com has address 10.0.2.4
>
> While this is what I get when looking via ldbsearch:
>
> ubuntu at ad-dc-1:~/samba$ sudo bin/ldbsearch
> -H /var/lib/samba/private/sam.ldb -b
> DC=gc._msdcs,DC=samba.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samba,DC=example,DC=com
> -s base --show-binary
> sudo: unable to resolve host ad-dc-1
> # record 1
> dn:
> DC=gc._msdcs,DC=samba.example.com
> ,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samba,DC=example,DC=com
> objectClass: top
> objectClass: dnsNode
> instanceType: 4
> whenCreated: 20150226045441.0Z
> whenChanged: 20150226045441.0Z
> uSNCreated: 3719
> showInAdvancedViewOnly: TRUE
> name: gc._msdcs
> objectGUID: a5218b75-7946-42e1-9b89-f087e37f8e04
> objectCategory:
> CN=Dns-Node,CN=Schema,CN=Configuration,DC=samba,DC=example,DC=com
> dc: gc._msdcs
> 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                 : 0x00000004 (4)
>         dwTtlSeconds             : 0x00000384 (900)
>         dwReserved               : 0x00000000 (0)
>         dwTimeStamp              : 0x00376534 (3630388)
>         data                     : union dnsRecordData(case 1)
>         ipv4                     : 10.0.2.4
>
> 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                 : 0x00000007 (7)
>         dwTtlSeconds             : 0x00000384 (900)
>         dwReserved               : 0x00000000 (0)
>         dwTimeStamp              : 0x00376534 (3630388)
>         data                     : union dnsRecordData(case 1)
>         ipv4                     : 10.56.240.4
>
> uSNChanged: 3725
> distinguishedName:
> DC=gc._msdcs,DC=samba.example.com
> ,CN=MicrosoftDNS,DC=DomainDnsZones,DC=samba,DC=example,DC=com
>
> # returned 1 records
> # 1 entries
> # 0 referrals


Can you check if you have dns records under:

  CN=MicrosoftDNS,CN=System,DC=samba,DC=example,DC=com

Amitay.