CentOS - Aug 2010 - CentOS to RedHat and vice versa

Has anyone ever tried to mass replace installed RedHat RPMS with their
equivalent CentOS versions or vice versa?

I was thinking of generating a list of all packages and then running
RPM or yum with a 'replace' option.

The reason for doing this:
Years ago I was tasked with building a RHEL4 system. Budgeting, time
constraints, the lunar cycle, etc.., prevented the purchase of an
equivalent development environment. So CentOS was used for the
development/test system. It sufficed for several years.  Now I need to
make them as close to identical as possible which means registering
the development system in RHN and making it "standard".

I've seen posts that RHEL -> CentOS is at least possible. That is,
take a RHEL system and get it to update via YUM and CentOS
repositories.  I have not seen the reverse, however.

On 08/05/2010 03:24 PM, Kwan Lowe wrote:
> I've seen posts that RHEL ->  CentOS is at least possible. That is,
> take a RHEL system and get it to update via YUM and CentOS
> repositories.  I have not seen the reverse, however.
you might want to speak with your Red Hat  support / sales guys as well, 
going down that route might cause them to get upset ( or not be liable 
for support )

- KB

On 08/05/2010 10:24 AM, Kwan Lowe wrote:
> Has anyone ever tried to mass replace installed RedHat RPMS with their
> equivalent CentOS versions or vice versa?
> I've seen posts that RHEL ->  CentOS is at least possible. That is,
> take a RHEL system and get it to update via YUM and CentOS
> repositories.  I have not seen the reverse, however.
Check this out, it will point you in the right direction:

http://blog.famillecollet.com/post/2010/04/15/Switch-from-CentOS-5.4-to-RHEL-5.5

Tom