Howto update / change hostname of a system using RHEL/Centos in RHN, Satellite or Spacewalk

Today I had to update a system profile in RHN. The system is a RHEL 4 and was added to RHN few years ago and the hostname had changed since then. You can change the system name in RHN but you cannot change the hostname or the ipaddress. I just wanted to share with everyone how to update the RHN profile of a host.

Once your hostname is changed, you just have to execute this command:

# up2date --hardware

If you are using spacewalk and CentosOS6/RHEL6 you’ll see that up2date is not there anymore. You’ll need to have the rhn tool installed and sync the profile with:

# rhn-profile-sync

And voila, you should see the updated hostname on RHN/Spacewalk/Satellite.


Author: Arsenick

Hi all! I'm a 27 years old guy from Quebec city, Canada. I've been playing with Linux since 1998 and start to earn my life using Linux and FOSS around 2005. Since then I've earned few certification and courses including CLP10 (Certified Linux Professional from Novell), RHCE (RedHat Certified Engineer) and JBOSS Administration course. I'm a Linux sys admin and I'm working here in Quebec city for a small company who are RedHat Advanced partner since few years. So I'm trying to always keep me updated on new technology and new RedHat product. The best way I've found to do it is to use and contribute to the Fedora Community. So I've joined the community in mid 2009 as a Fedora Ambassadors, I still learning how everything work in a opensource community, but I really liked what I saw at the 2009 FUDCON in Toronto.

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