Jeremy C. Reed wrote:

>On Thu, 19 May 2005, Matt Alexander wrote:
>
>  
>
>>We primarily use CentOS and Whitebox for our dev/test boxes.  We're a
>>large Oracle shop and the production servers run RH Enterprise.  Since
>>CentOS has the same packages as RH Ent. and is updated frequently, it's
>>a good way for us to do preliminary testing without worrying about OS
>>differences as we move to production.
>>We're also in the process of setting up our own up2date server to
>>simplify the deployment of apps developed in-house.
>>    
>>
>
>Can you update or switch to and from CentOS, Whitebox, and Red Hat
>Enterprise easily?
>
>Can you upgrade from a Enterprise to CentOS just by changing your yum (or
>similar) configurations? And visa versa?
>
>If so, please share some examples on what you configure and approximately
>how much downtime.
>
>Or do you have to reinstall from scratch?
>
>I am curious if you can do an upgrade on a production server to a
>different distro based on same Enterprise source RPMs.
>


I've always just reinstalled from scratch.  The RPMs are all built from 
the same RedHat Ent. source RPMs so there's very little, if any, 
difference between package A on CentOS and package A on RedHat ES.  A 
few of the RPMs have "centos" or "WB" in the name, which, I believe, 
previously contained copyrighted RedHat content that has subsequently 
been removed.  I download RPMs from dag.wieers.com all the time that 
were built for RH ES 3 or ES 4 and run them on Whitebox and CentOS 
without any problems.
~M

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