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How to force system to use full "hostname.domainname" instead of the alia "hostname"

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chenn_1
Advisor

How to force system to use full "hostname.domainname" instead of the alia "hostname"

I want to force HP-UX use "hostname.domainname" instead of just a short alia "hostname". For example, a server's host name is grey, domain name is surg.sm.com. When I am using telnet/ssh connecting to this server, I want to use "telnet grey.surg.sm.com" instead of "telnet grey".

I've already cleaned related item in /etc/hosts, but the alia is still workable. What else do I need to do?

Thanks in advance.
4 REPLIES
Steven Schweda
Honored Contributor
Solution

Re: How to force system to use full "hostname.domainname" instead of the alia "hostname"

> I want to force HP-UX use [...]

Do you mean that you want to force the HP-UX
_users_ to specify fully qualified names?

cat /etc/resolv.conf

You can try throwing out the "domain"
directive, but that may not be enough.

Why would you want to do this? Are things
too convenient now?
chenn_1
Advisor

Re: How to force system to use full "hostname.domainname" instead of the alia "hostname"

Thanks for your info. I now achieved my purpose. Btw, we can also remove the "dns" item in /etc/nsswitch.conf. I did this just for study purpose. I will recover the configuration and make it confortable for all other users.

Thanks.
Hakki Aydin Ucar
Honored Contributor

Re: How to force system to use full "hostname.domainname" instead of the alia "hostname"

>.. I now achieved my purpose..
Hi chenn, Do you want to share with us how you did it?
chenn_1
Advisor

Re: How to force system to use full "hostname.domainname" instead of the alia "hostname"

assume target machine name is grey, domain name is surg.sm.com.

1. remove "grey.surg.sm.com" related item in /etc/hosts
2. remove "domain surg.sm.com" in /etc/resolv.conf if it has

ping target machine with hostname only will return fail in this condition.

#ping grey -n 1
#ping: unknown host grey
#
#
#ping grey.surg.sm.com <-- works OK
#

3. restore /etc/hosts
4. restore /etc/resolv.conf

This time, ping with hostname only:

#ping grey -n 1 <-- works OK