[Samba] reverse dns confused

Rowland Penny rpenny at samba.org
Sat Oct 8 14:19:42 UTC 2016


On Sat, 08 Oct 2016 08:53:31 -0500
Bob of Donelson Trophy via samba <samba at lists.samba.org> wrote:

> On 2016-10-08 07:58, Rowland Penny via samba wrote:
> 
> > On Sat, 08 Oct 2016 07:50:03 -0500
> > Bob of Donelson Trophy via samba <samba at lists.samba.org> wrote:
> > 
> >> I have built a second dtdc03 and joined to my first dtdc01. Thought
> >> all was well but, discovered that reverse dns is not correct on
> >> second dtdc03. 
> >> 
> >> root at dtdc03:~# host dtdc03
> >> dtdc03.dtshrm.dt has address 192.168.16.49
> >> root at dtdc03:~# host 192.168.16.49
> >> Host 49.16.168.192.in-addr.arpa. not found: 3(NXDOMAIN)
> >> root at dtdc03:~# nslookup dtdc03
> >> Server: 192.168.16.49
> >> Address: 192.168.16.49#53 
> >> 
> >> Name: dtdc03.dtshrm.dt
> >> Address: 192.168.16.49 
> >> 
> >> root at dtdc03:~# nslookup 192.168.16.49
> >> Server: 192.168.16.49
> >> Address: 192.168.16.49#53 
> >> 
> >> ** server can't find 49.16.168.192.in-addr.arpa: NXDOMAIN 
> >> 
> >> I tried to add the reverse zone (I may be doing this wrong
> >> but . . .)
> > 
> > Bob, did you create the reverse zone on the first DC ?
> > 
> > If so, you don't create it again, you just add the new DCs reverse
> > record to the zone.
> > 
> > Rowland
> 
> I'm still doing something wrong. 
> 
> On first DC (dtdc01) I ran . . .  and got . . . 
> 
> root at dtdc01:~# samba-tool add dc 16.168.192.in-addr.arpa 49 PTR DTDC03
> Usage: samba-tool <subcommand>
> 
> Main samba administration tool.
> 
> Options:
>   -h, --help       show this help message and exit
> 
>   Version Options:
>     -V, --version  Display version number
> 
> Available subcommands:
>   dbcheck     - Check local AD database for errors.
>   delegation  - Delegation management.
>   dns         - Domain Name Service (DNS) management.
>   domain      - Domain management.
>   drs         - Directory Replication Services (DRS) management.
>   dsacl       - DS ACLs manipulation.
>   fsmo        - Flexible Single Master Operations (FSMO) roles
> management.
>   gpo         - Group Policy Object (GPO) management.
>   group       - Group management.
>   ldapcmp     - Compare two ldap databases.
>   ntacl       - NT ACLs manipulation.
>   processes   - List processes (to aid debugging on systems without
> setproctitle).
>   rodc        - Read-Only Domain Controller (RODC) management.
>   sites       - Sites management.
>   spn         - Service Principal Name (SPN) management.
>   testparm    - Syntax check the configuration file.
>   time        - Retrieve the time on a server.
>   user        - User management.
>   vampire     - Join and synchronise a remote AD domain to the local
> server.
> For more help on a specific subcommand, please type: samba-tool
> <subcommand> (-h|--help) 
> 
> Obviously it is telling me that I am doing something wrong . . . I
> have read too much and I'm confused. 
> 
> On dtdc01 I ran the following: 
> 
> root at dtdc01:~# nslookup dtdc01
> Server:        192.168.16.49
> Address:    192.168.16.49#53
> 
> Name:    dtdc01.dtshrm.dt
> Address: 192.168.16.51
> 
> root at dtdc01:~# nslookup dtdc03
> Server:        192.168.16.49
> Address:    192.168.16.49#53
> 
> Name:    dtdc03.dtshrm.dt
> Address: 192.168.16.49
> 
> root at dtdc01:~# nslookup 192.168.16.51
> Server:        192.168.16.49
> Address:    192.168.16.49#53
> 
> 51.16.168.192.in-addr.arpa    name = dtdc01.dtshrm.dt.
> 
> root at dtdc01:~# nslookup 192.168.16.49
> Server:        192.168.16.49
> Address:    192.168.16.49#53
> 
> ** server can't find 49.16.168.192.in-addr.arpa.: NXDOMAIN 
> 
> In my mind I am being told to add the second DC (dtdc03) reverse dns
> to dtdc01 . . . what am I doing wrong? Am I miss understanding the
> message?
> 
> 

The command should have been:

samba-tool dns add dc 16.168.192.in-addr.arpa 49 PTR
DTDC03.your.domain.tld

You missed out the 'dns' and the dns domain

Rowland



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