Upgrading from Fedora Core 7 to CentOS 5.4

kaplan71 · 01-19-2010, 08:00 AM

Hi there --

I need to upgrade one of our systems from its current distribution, Fedora Core 7, to the most recent version distribution, release 5.4, of the CentOS operating system. Can I do an in-place upgrade of the operating system without any adverse side-effects? Are there any issues that I should be concerned with before proceeding? Thanks.

ncsuapex · 01-19-2010, 08:23 AM

Ive update several Fedora Core 2 machines to CentOS 5.2 with little to no issues. You should be able to adjust this to CentOS 5.4 but I have not upgraded any to 5.4.

I posted a how to here. Read it a few times and maybe find a practice server to test it on to make sure you have any bugs worked out for your setup.

http://www.linuxquestions.org/questi...-2ways-639140/

knudfl · 01-19-2010, 10:14 AM

*

Be careful, CentOS 5.4 is Fedora 6 based.

So some packages are older versions than the Fedora 7 ones.

kaplan71 · 01-19-2010, 10:17 AM

Hi there --

Thanks for your reply. Correct me if I am wrong, but isn't CentOS 5.4 based on the RHEL 5, as opposed to Fedora Core 6? Please pardon my ignorance.

ncsuapex · 01-19-2010, 10:35 AM

CentOS 5.4 is a clone of RHEL 5.4 which is based on Fedora Core 6.

Actually I think RHEL 5 is based on Fedora Core 6. 5.+ are probably based on newer versions of Fedora than 6. I've used Fedora 8-9 packages for CentOS 5.2.

knudfl · 01-19-2010, 11:03 AM

http://mirror.centos.org/centos/5.4/os/i386/CentOS/
grep fc6 CentOS-5.4-file-list
.. shows 143 original fc6 packages.
And there are hundreds ( thousands ? ) of those,
but marked el5.

RH versions http://en.wikipedia.org/wiki/Red_Hat_Enterprise_Linux
.....

kaplan71 · 01-20-2010, 07:27 AM

It would appear there could be some problems transitioning from Fedora to CentOS in this scenario. That being the case, it would probably be easier to go from Fedora Core 7 to the Fedora Core 12 distribution. What do you think?

ncsuapex · 01-20-2010, 07:59 AM

If you have a test server I'd give it a shot. I'm kind of curious to see what would happen. But I would NOT upgrade a production server for now doing this method.

John VV · 01-20-2010, 04:18 PM

they ARE TWO different opperating systems .They are similar and share SOME things -- but NOT ALL .

you can try but do not expect the results to work .
can you say " Frankenstein "

just use your backups of data and do a fresh install
then import the data

chrism01 · 01-20-2010, 07:29 PM

For a prod server, definitely do a clean install. Look at it this way, if the target was RHEL instead of Centos, RH would NOT support it.
Doesn't mean it can't be physically done of course, but I wouldn't trust it in the long term.

ncsuapex · 01-21-2010, 09:41 AM

I cant speak from experience on going from Fedora Core 7 to CentOS 5.4 but I have done FC2 to CentOS 5.2 upgrades probably a hundred times, most in testing but I do have 20-30 production machines that I have upgraded from FC2 to CentOS 5.2 and have had 0(ZERO) problems with them. The only issue I had was with the apaches modules section in httpd.conf. I had to remove the modules sections from the old httpd.conf and insert the module section that comes with httpd.conf on CentOS 5.2 and it worked perfectly.