topic Re: Full domain/host name in Operating System - HP-UX

Full domain/host name

Christian Fink — Wed, 04 Oct 2000 07:57:23 GMT

We recently had to reboot one of our K class servers under HP-UX 11.0
When the machine came back, it cold not find it's own domain name.
Usually the hostnmae is something like:
machine.dom1.dom2. But only the machine part was visible. We then restored all system files and without rebooting the machine, the full name was back.
Question: Where is it stored? (It's not the /etc/hosts file nor /etc/rc.config.d/netconf)

Thanks for any hint.

Re: Full domain/host name

Andrew Lartey — Wed, 04 Oct 2000 07:59:35 GMT

/etc/resolv.conf

Re: Full domain/host name

federico_3 — Wed, 04 Oct 2000 08:01:11 GMT

/etc/resolv.conf !

Federico

Re: Full domain/host name

Andreas Voss — Wed, 04 Oct 2000 08:12:11 GMT

Hi,

perhaps the name is retrieved by an DNS server which has to be listed in the file /etc/resolv.conf (nameserver)

Regards

Re: Full domain/host name

Christian Fink — Wed, 04 Oct 2000 10:22:22 GMT

Thanks a lot for your immediate answers.
I found in my notes, that /etc/resolv.conf
existed and contained the domain name.
Question: Are there other "static" files
which could have caused the problem?

Regards. Rene

Re: Full domain/host name

John Palmer — Wed, 04 Oct 2000 10:44:49 GMT

Certainly /etc/resolv.conf can contain the 'domain name' but according to the man pages it doesn't influence the 'hostname' command.

The 'hostname' is set by calling 'hostname ' or the C library call 'sethostname'.
This will be done at boot time by /sbin/init.d/hostname which does indeed source the name from /etc/rc.config.d/netconf

When you say that you 'restored all the system files' what did you do exactly?

Re: Full domain/host name

Christian Fink — Wed, 04 Oct 2000 11:57:03 GMT

Hi John.
We produce once per month an "ignite" recovery. It contains all files of / and
/usr filesystems.
instead of rebooting the machine from the tape, we did a tar to restore all these
files. When this job had terminated, all programs recognized the full nodename as machine.dom1.dom2
So it cannot be a dynamical assignment from one of the scripts in /sbin/init.d

Re: Full domain/host name

John Palmer — Wed, 04 Oct 2000 13:22:27 GMT

That behaviour would be explained by /etc/resolv.conf.

I misinterpreted your original post and thought you were referring to the output from the 'hostname' command rather than how programs recognised their domain.

You can get the same effect without /etc/resolv.conf by defining a fully qualified hostname in /etc/rc.config.d/netconf.

Regards,
John