topic Re: does not know by itself - ping unknown host in Operating System - HP-UX

does not know by itself - ping unknown host

Tonatiuh — Sat, 23 Jul 2005 16:29:11 GMT

HP-UX PA-RISC 11.11.

My /etc/hosts
127.0.0.1 localhost loopback
172.16.110.41 xyz.mydomain.org xyz

But there is a problem resolving the IP for the hostname of this same server (xyz.mydomain.org):

# /usr/sbin/ping xyz.mydomain.org
/usr/sbin/ping: unknown host xyz.mydomain.org

Re: does not know by itself - ping unknown host

Devesh Pant_1 — Sat, 23 Jul 2005 16:44:27 GMT

Check your /etc/nsswitch.conf
It should show something like this
# /etc/nsswitch.conf: #
hosts: files [NOTFOUND=continue] dns [NOTFOUND=continue]

What does uname -a return?

thanks

DP

Re: does not know by itself - ping unknown host

Fabio Ettore — Sat, 23 Jul 2005 16:56:40 GMT

Hi,

the resolution IP/names happens by 3 three methods:

- DNS ---> check /etc/resolv.conf to point the good nameservers

- /etc/hosts

- NIS (it is not so used)

Check /etc/nsswitch.conf about the order of the policies.

Another way to check the order of the policies is by
nslookup -swtrace xyz.mydomain.org

What does last nslookup command report?

HTH.

Best regards,
Fabio

Re: does not know by itself - ping unknown host

Mahesh Kumar Malik — Sun, 24 Jul 2005 02:05:59 GMT

Hi
Please check /etc/nsswitch.conf file. If not existing, copy /etc/nsswitch.hp_defaults as /etc/nsswitch.conf and edit to get following in order to see file for name resolution

hosts: files [NOTFOUND=continue] dns [NOTFOUND=continue

Regards
Mahesh