[rhn-users] Determining whether RHEL4 is registered?

[Phil Edwards]

Timothy Kallinis wrote:
> 
> If /etc/sysconfig/rhn/systemid exists then the system is registered 
> otherwise it is not. Do you think this is sufficient? Also is the 
> filename systemid or system_id? I don't have any registered systems at 
> the moment, so I can't confirm this.
> 

The other thing to watch out for if you're deploying from VMWare 
templates (as I do) is that the RHEL install process creates a unique 
UUID in /etc/sysconfig/rhn/up2date-uuid - if you don't change this on 
the machines which you deploy from your template, they'll all end up in 
RHN with the same system id. To be fair, I've yet to see any evidence 
that this causes a problem, but it offends my sysadmin 'neat and tidy' 
detector. :-)

After deploying from your template, or in the postinst script for your 
package, you should use uuidgen(1) to create a new system id and save it 
into the up2date-uuid file.

-- 

Regards

Phil Edwards
Brighton, UK