Re: 11.31 hostname change issue (662 Views)
Trusted Contributor
Posts: 564
Registered: ‎04-10-2000
Message 1 of 4 (701 Views)

11.31 hostname change issue

       Greetings, running hp-ux 11.31 on PA-RISC rp7420. I was shown a way to change the hostname on 11.31 by 1) editing the /etc/hosts file with the new name, 2) editing the /etc/rc.config.d/netconf with the new name then running /sbin/init.d/hostname start. I have done this several times in the past now, but recently, the hostname is not changed doing this. A uname or hostname command shows the original hostname. If I run set_parms hostname though, it indicates the hostname has already changed and I have the option to keep it or change it. Either way - after running set_parms, the name really is changed - as verified by uname and hostname.

       More curious - I can revert to the original hostname with the initial procedure (ending with /sbin/init.d/hostname start) and do not need to run set_parms.

       Can someone explain this behavior?  thanks


Honored Contributor
Posts: 6,271
Registered: ‎12-02-2001
Message 2 of 4 (684 Views)

Re: 11.31 hostname change issue

What is the length of the new hostname? Is it longer than the old one? Longer than 8 characters?


Old versions of HP-UX had a hostname length limit of 8 characters. Then it became possible to extend the hostname beyond 8 characters, but if you did that, you had to also specify a 8-characters-or-less version as a "nodename", to be used by UUCP utilities and possibly other legacy stuff. When the hostname was 8 characters or less, the convention was for the nodename to be automatically set equal to the hostname.


In 11.31, even the nodename can be extended beyond 8 characters, but you must activate certain configuration options to do so. It's possible that set_parms includes the functionality to make the necessary configuration changes automatically, while the other ways to change the hostname do not.


Trusted Contributor
Posts: 564
Registered: ‎04-10-2000
Message 3 of 4 (669 Views)

Re: 11.31 hostname change issue

the length of the new hostname was 7 chars, the old was 6 chars

Honored Contributor
Posts: 1,251
Registered: ‎06-26-2001
Message 4 of 4 (662 Views)

Re: 11.31 hostname change issue

If you look at what the /sbin/init.d/hostname script is doing, it is first sourcing the configuration files within the /etc/rc.config.d/ as specified by /etc/rc.config.  This will get the HOSTNAME value from the netconf file.


(Do you happen to have multiple 'netconf*' files in the /etc/rc.config.d directories?)


This value is passed to the 'hostname' and 'uname -S' commands to set the name of the host.


Run the following to show what the hostname script is doing:


  # sh -x /sbin/init.d/hostname start


Look for the line HOSTNAME=xxxxxxx and then the commands being used.






The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation.