Where do I have to add the name of the DNS server

rytec · 03-14-2012, 06:56 AM

When I perform a NSlookup on my server it gives me the response like this :

Server: 127.0.0.1
Address: 127.0.0.1#53

Where in bind is it possible to change the IP behind Server: to the name of my server?

bathory · 03-14-2012, 12:05 PM

Hi,

The resolver is defined in /etc/resolv.conf and it's not possible to use hostnames in place of IPs

rytec · 03-14-2012, 03:01 PM

OK, thanks for your reply, can you also tell me why it is not possible to give it names? because on a sbs server I get a name for the nameserver when I perform a nslookup

lleb · 03-14-2012, 04:50 PM

your resolve should look something like this:

Code:

# cat /etc/resolv.conf
hosts,dns
nameserver 192.168.2.1
nameserver 209.92.1.12

bathory · 03-14-2012, 05:32 PM

Quote:

Originally Posted by rytec

OK, thanks for your reply, can you also tell me why it is not possible to give it names? because on a sbs server I get a name for the nameserver when I perform a nslookup

You understand that you cannot use a hostname as the nameserver argument in /etc/resolv.conf, because you'll need another resolver to resolve it. I guess sbs is some sort of windows, because IIRC windows nslookup answer uses the dns hostname in the response "Server" line.
In linux you can run nslookup like this:

Code:

nslookup linuxquestions.com localhost
Server:         localhost
Address:        127.0.0.1#53

Non-authoritative answer:
Name:   linuxquestions.com
Address: 174.137.125.92

to get the same result

Cheers

rytec · 03-15-2012, 02:54 AM

Quote:

Originally Posted by lleb

your resolve should look something like this:

Code:

# cat /etc/resolv.conf
hosts,dns
nameserver 192.168.2.1
nameserver 209.92.1.12

Indeed, but I do not have that line with hosts,dns
I have read the man resolv.conf page and even there I cannot find anything about that line hosts,dns
Can you explain a bit more please?

thank you

bathory · 03-15-2012, 03:11 AM

Quote:

Indeed, but I do not have that line with hosts,dns
I have read the man resolv.conf page and even there I cannot find anything about that line hosts,dns
Can you explain a bit more please?

This is obviously wrong. You cannot have a line "hosts,dns" in /etc/resolv.conf. I guess that the previous poster is talking about the:

Code:

hosts:   files dns

in /etc/nsswitch.conf, that is used by application when trying to resolve hostnames

Regards

RobertEachus · 03-15-2012, 08:07 AM

The DNS server isn't "named" in the configuration. It has to be named in DNS, here is an example that creates the reverse zone for 127.0.0.0/24 on the DNS server. If your DNS server has a public IP address you will need to make sure the reverse zone is delegated to your DNS server.

----------------------ZONE STATMENT FROM NAMED.CONF-------------------------

Code:

zone "0.0.127.in-addr.arpa" in{
  type master;
  file "0.0.127.in-addr.arpa";
  allow-update{none;};
};

----------------------FILE: 0.0.127.in-addr.arpa----------------------------

Code:

$TTL    86400
@       IN      SOA     localhost. root.localhost.  (
                                      1997022700 ; Serial
                                      28800      ; Refresh
                                      14400      ; Retry
                                      3600000    ; Expire
                                      86400 )    ; Minimum
              IN      NS      localhost.

1       IN      PTR     DNSSERVER.yourdomainname.com.