topic Best way to change hostname & ip address in Operating System - HP-UX

Best way to change hostname & ip address

thewho? — Mon, 01 Oct 2001 17:54:49 GMT

Hello,
HP-UX 11.0, N4000
I'm going to replace our old N4000 with a new one. The new one is configured, tested and ready all is left to do is change the ip address/hostname so that users start logging in the new N4000. What (and why) would be the best method to do this?

a) "/sbin/set_parms initial" and reboot.

b) edit the /etc/rc.config.d/netconf file and change the appropiate parameters and then reboot.

c) Is there any other way?

Thanks in advance.
Luis

Re: Best way to change hostname & ip address

Sanjay_6 — Mon, 01 Oct 2001 18:02:47 GMT

Hi Luis,

"/sbin/set_parms initial" should do the job you want. You can manully edit /etc/rc.config.d/netconf for other information or you can do that thru sam --> networking and communication.

hope this helps.

thanks

Re: Best way to change hostname & ip address

linuxfan — Mon, 01 Oct 2001 18:02:48 GMT

Hi Luis,

I don't believe there is a best way to this, its just a matter of preference. Some people prefer just running /sbin/set_parms and not deal with editing multiple files or run multiple commands.

But both the ways do work, i believe its just a matter of preference. But if you are editing files, don't forget /etc/hosts.

-Regards
Ramesh

Re: Best way to change hostname & ip address

Patrick Wallek — Mon, 01 Oct 2001 18:04:58 GMT

I would vote to go with your option A. It will be the cleanest and make sure that all appropriate files are modified.

If you use your option B, then you must make sure that you modify /etc/hosts as well.

Re: Best way to change hostname & ip address

Joseph C. Denman — Mon, 01 Oct 2001 18:05:01 GMT

set_parms is easier and modifies the files for you. **Less chance of error due to missing a config file.

You can modify the files yourself, but I would recommend using set_parms and then manually checking the files. Below are a few that I would double check.

/etc/hosts
/etc/nsswitch.conf
/etc/resolv.conf
/etc/rc.config.d/netconf

...jcd...

Re: Best way to change hostname & ip address

James R. Ferguson — Mon, 01 Oct 2001 18:06:42 GMT

Hi Luis:

Running /sbin/set_parms is easy, but so is editing /etc/rc.config.d/netconf -- the choice is really up to you.

Don't forget to change your ROUTE_GATEWAY and your SUBNET_MASK as necessary.

If you are running DNS on the server that is changing, be sure to modify /etc/resolv.conf as necessary on *other* servers.

Regards!

...JRF...

Re: Best way to change hostname & ip address

Sanjay_6 — Mon, 01 Oct 2001 18:12:00 GMT

Hi,

Also look out for the /etc/nsswitch.conf file.

thanks

Re: Best way to change hostname & ip address

Santosh Nair_1 — Mon, 01 Oct 2001 18:25:32 GMT

Just my 2 cents on this topic. If you have the luxury of a reboot, then go with the /etc/set_params option. This updates all the proper files and more importantly, the reboot takes care of restarting all the daemons so that they now know the new hostname/IP.
Otherwise, if you can not afford to reboot, you'd have to edit /etc/rc.config.d/netconf, /etc/hosts and then bounce several daemons, including (but not limited to) rpc*, nfsd, nis client/server, swagentd, and a bunch more that I'm missing.

-Santosh