Domain Name Change HPUX11.11 Trusted System

[Glenn Mitchell_2]

System: HP 9000/800 N4000
OS: HP-UX 11.11

Our operating company needs to shift all of our servers to a new domain to bring it into the parent company naming standards. Our server is a Trusted System. What do I need to consider – or beware of - prior to making the change? I already found out (painfully) that OmniBack tape backup agent licensing is impacted. We also utilize NFS, CIFS, and DTC manager. Thank you for your advic

[Sundar_7]

You can ignore trusted system for the domain name changes - but nevertheless, changing the domain name of the server can break many things. Worst part is you will not come to know until it breaks :-)

Bottomline is - anything that refers to the hardcoded FQDN (with the current domain name) needs to be chaged.

Go about fixing one service at a time. As far as NFS goes, fix /etc/exports, /etc/fstab,automounter map files in /etc directory.

[Steven E. Protter · Accepted solution]

Definitely changing the domain name will break omniback. A procedure will need to be done to convert the database so that it continues to function.

CIFS will require adjustment to its smb.conf file depending on how its configured.

NFS may break if you have hostname access control in /etc/exports

The change is effected by changing the hostname in /etc/rc.config.d/netconf

There is another way to change the hostname and limit the effect on the internal server.

Don't change it on the HP-9000 server. Change it in DNS. If the hostname is generic and not fully qualified, you can change the practical domain name by changing it in the DNS server.

Let me give an example. I have a machine, an HP-9000 server at my private office. Its fully qualified domain name is hpweb.investmenttool.com

Can't do that in the netconf file because investmenttool is greater than 8 characters.

So its totally done with the DNS database. The machine is on the public Internet, you can do a nslookup or dig on it. Let me assure you that I can change the hostname via DNS without effecting the operation of omniback or any other services because this can be done without making configuration changes on the HP-9000 server.

SEP

[Glenn Mitchell_2]

Thank you for your suggestion regarding setting up an alias in DNS. 'A GOOD suggestion representing the least pain. Thank you again.