topic Re: FQDN or DNS in Operating System - HP-UX

FQDN or DNS

Marylou Kohlmeier — Thu, 07 May 2009 15:18:29 GMT

Is there a command to find out if I'm using FQDN or DNS? I'm on HP-UX 11.23 RX 7640 Itanium

thank you,
Marylou

Re: FQDN or DNS

Steven Schweda — Sat, 09 May 2009 21:23:32 GMT

Ok, I give up. Using for what, where, how?

A Fully Qualified Domain Name is one thing.
A/the Domain Name Server/Service/System is
something else (as well as being ambiguous).

Is there some actual problem which you are
trying to solve?

Re: FQDN or DNS

Kranti Mahmud — Sun, 10 May 2009 03:11:18 GMT

Hi Marylou,

You can fine FQDN-Fully Qualified Domain Name whenever U find a . (dot) after the end of the domain name as (www.hp.com.). For more details, check the link:
http://en.wikipedia.org/wiki/FQDN

DNS or Domain Name System is a different thing what you can find at below:

http://en.wikipedia.org/wiki/Domain_name_system

Rgds-Kranti

Re: FQDN or DNS

Taifur — Mon, 11 May 2009 08:46:10 GMT

Hu Kholmer,

You can use dig commnand to find out FQDN/DNS
or nslookup
#nslookup
#set type = any
#type your FQDN/DNS

Rgds//
Taifur

Re: FQDN or DNS

Suraj K Sankari — Mon, 11 May 2009 09:44:38 GMT

Hi,

try with nslookup servername

Suraj

Re: FQDN or DNS

Bill Hassell — Tue, 12 May 2009 00:27:58 GMT

nsquery is a bit better than nslookup but the actual hostname or IP resolution depends on the application you are using. nsquery covers many, but not all resolver implementations. Have you looked at /etc/nsswitch.conf and the nsswitch man page? This file is the most important in configuring resolver behavior -- and the default is not usually the best choice.

Re: FQDN or DNS

Marylou Kohlmeier — Tue, 12 May 2009 12:58:42 GMT

This is what I have for /etc/nsswitch.conf

hosts: files [NOTFOUND=continue UNAVAIL=continue] dns [NOTFOUND=return UNAVAIL=c
ontinue TRYAGAIN=continue]
services: files
aliases: files
networks: files
protocols: files
rpc: files
publickey: files
netgroup: files
automount: files

Re: FQDN or DNS

Torsten. — Tue, 12 May 2009 13:06:22 GMT

Your server looks into the hosts file first, if nothing found it will "ask" DNS. Looks good.

Re: FQDN or DNS

Mel Burslan — Tue, 12 May 2009 14:25:35 GMT

In the light of what your nsswitch.conf file, your system first looks into /etc/hosts file and if it can not find the server in this file, then it goes to the DNS server. Which DNS server it will use, will be determined by the order of servers in /etc/resolv.conf file.

The terminology used in your question is a little bit confusing. FQDN (or Fully Qualified Domain Name) is not a complementary term to DNS usage.

Hope this helps.