DHCP cleint enabled, but hostame not set properly

[David Burgess]

I've configured a DHCP client on LAN1 by enabling it in /etc/rc.config.d/netconf and touching /etc/dhcpclient.data.

On reboot it obtains a lease from my ISP. It is given the hostname dhcp-4-51.

uname -a shows the hostname as unknown and when I start CDE via reflections it says welcome to unknown.

On Solaris I added an rc script to reset the hostname and all was well. Is there something similar I can do on HPUX 11.00?

maybe I need an rc script with uname -S or hostname?

Many thanks,

Dave.

[Clemens van Everdingen]

Hi,

Use set_parms to set your hostname.

C.

[Clemens van Everdingen]

Hi,

sorry, the systems gets a new hostname every time I guess.
So not a correct answer.

C.

[David Burgess]

Doesn't that require a reboot?

If I do auto_parms kindly updates /etc/rc.config.d/netconf and /etc/hosts on boot back to the dhcp-4-51 hostname.

What I really want is to keep my hostname as "raver" and ignore what my ISP gives me.

[Clemens van Everdingen]

Hi,

allright my first impresion was OK.
Use set_parms to set the hostname.

Yes reboot.

C.

[Steven Sim Kok Leong · Accepted solution]

Hi,

Use /etc/rc.config.d/netconf and specify under:

HOSTNAME="xyz"

Alternatively, set uname -S hostname right at the end of /sbin/rc1.d/S320hostname:

uname -S xyz

For more details, take a look at /sbin/rc1.d/S320hostname. You can't use set_parms because it prompts interactively.

Hope this helps. Regards.

Steven Sim Kok Leong

[David Burgess]

I'll give the uname -S raver at the end of /sbin/rc1.d/S320hostname tonight. Is there no way of overriding auto_parms updating /etc/hosts and /etc/rc.config.d/netconf when it runs at boot?

[Steven Gillard_2]

Not without editing the auto_parms script, which you don't want to do...

Just another note, if you are going to change the hostname in a script after auto_parms has run, you should make sure that your hostname is resolvable properly otherwise you'll have no end of trouble. So, make sure your script also updates the appropriate /etc/hosts entry with the IP address supplied by DHCP, and that nsswitch.conf is configured to look at hosts before DNS.

Regards,
Steve

[David Burgess]

I wrote this script last night /sbin/rc1.d/S321sethostname. It runs straight after /sbin/rc1.d/S320hostname and sets everything back to what it should be.

Thanks for all your help,

Dave.


#!/sbin/sh # # @(#) $Revision: 1.0 Dave Burgess 18/04/2002$
#
# /sbin/rc1.d/S321sethostname
# /sbin/auto_parms sets up the dhcp client. Unfortunately ISP's can set the
# hostname for us. In this case it is set to dhcp-4-51.
# This script resets the hostname to raver.

new_hostname="raver"
PATH=/sbin:/usr/sbin:/usr/bin
export PATH
echo "Resetting dhcp set hostname to $new_hostname"
uname -S $new_hostname
cp -p /etc/hosts /tmp/hosts.boot
cat /tmp/hosts.boot | sed s/dhcp-4-51/$new_hostname/g > /etc/hosts
cp -p /etc/rc.config.d/netconf /tmp/netconf.boot
cat /tmp/netconf.boot | sed s/dhcp-4-51/$new_hostname/g > /etc/rc.config.d/netconf