topic Re: nslookup issue in redhat 9 in Operating System - Linux

nslookup issue in redhat 9

Binu_5 — Tue, 08 Nov 2005 04:15:43 GMT

Hi

I am facing some problem with nslookup in redhat linux 9 . I have added a host in /etc/hosts.and the search order in /etc/nsswitch.conf is like the following
hosts: files nis dns

but when I give an nslookup the error follows
root@wiplx14 etc]# nslookup wiplx14
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
Server: 10.200.50.100
Address: 10.200.50.100#53

** server can't find wiplx14: SERVFAIL

The system directly contactinf the DNS server
which is 10.200.50.100..

Please help

Thanks
Binu

Re: nslookup issue in redhat 9

Alexander Chuzhoy — Tue, 08 Nov 2005 04:46:09 GMT

nslookup is used to query DNS servers.
you can try to ping to this hostname and see if it gets resolved,or
you can issue
dig -f /etc/hosts hostname
where hostname is the name that you've added to /etc/hosts

Re: nslookup issue in redhat 9

Florian Heigl (new acc) — Tue, 08 Nov 2005 05:38:07 GMT

do You have a domain name set in /etc/resolv.conf?

nslookup will usually use the DNS, as already stated. You can simply use the command 'host' to the Your resolver, but I'm not really sure You'll be happy with a DNS that can't resolve itself (unless it's just a domain suffix issue, of course).

Re: nslookup issue in redhat 9

Binu_5 — Tue, 08 Nov 2005 05:49:38 GMT

Hi

I dont want want resolve my hostname using dns but I want from /etc/hosts or from the nis server .. Is it possible

Thanks
Binu

Re: nslookup issue in redhat 9

Ivan Ferreira — Tue, 08 Nov 2005 06:21:29 GMT

Simply use the ping command to test name resolution.

Re: nslookup issue in redhat 9

Paul Cross_1 — Tue, 08 Nov 2005 09:14:23 GMT

If I'm understanding you correctly you have added a host name to /etc/hosts and you are trying to nslookup that host. Correct?

If this is what you are trying to do, the short answer is: you can't. nslookup doesn't querry /etc/hosts, or NIS. nslookup querries dns only. As mentioned above, you can try the host command, or dig, as mentioned above. If you need to add the host to DNS, you should talk to your DNS admin to do that (because I'm assuming from the nature of your question that you aren't the DNS admin).

Re: nslookup issue in redhat 9

Muthukumar_5 — Thu, 10 Nov 2005 03:17:36 GMT

Yes. Set /etc/nsswitch.conf file as,

hosts: files nis

It will try to resolve hostname as,

files then nis configuration.

It will not use dns for this.

hth.