'resolv.conf' file

[O'lnes]

What IP address is the best to set to nameserver in the 'resolv.conf' file ?

Thanks.

[U.SivaKumar_2]

Hi,
The nearest DNS server should be set as first
nameserver and then other DNS servers.

And if you are running NAMED in the same server
then you have to set the loopback address in the /etc/resolv.conf as the first place. Use
domain directive.
eg:
domain mydomain.com
nameserver 127.0.0.1
nameserver
nameserver
In this case your server itself is a DNS server

regards,
U.SivaKumar

[O'lnes]

What is the use to set the localhost(127.0.0.1) as nameserver? Thanks.

[U.SivaKumar_2]

Hi,
See since you are running a DNS in a same server . DNS will be running in loopback ip address and your network interface addresses.

If you want name resolution on the above server, it is recommended to use 127.0.0.1 which is a loopback address which will reduce the packet processing overhead.

But the overhead will be more if you set network's ip address .
As the packet as to pass the buffers etc.
regards,
U.SivaKumar

[O'lnes]

I know some linux server set its nameserver to mail server 's IP address , is it suitable?

[U.SivaKumar_2 · Accepted solution]

Hi,
you can do that provided you are running DNS in the mail server. Normally it is good to run
DNS in a separate server if the dns clients and
internet traffic more.


regards,
U.SivaKumar