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Upgrade FC9 to CentOS 6?

Red Squirrel

Red Squirrel

No Lifer
Can this be done? Or am I better off formatting and clean installing? Debating on upgrading my server so I can get a newer kernel and other features/bug fixes etc. FC9 is no longer updated considering they'are at like 16 lol.
 
Figured, just thought I'd ask in case there was some kind of way of actually switching distro without formatting. What about if I stick with FC?
 
xSauronx said:
so would i, but mostly because he asked something roughly akin to "can i upgrade windows xp to OS X Server?" which you cant do because the products arent related.

/or was this all a joke?
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They're closely related I think. Fedora's the community RedHat, and CentO/S is the debranded official RedHat if I'm not mistaken. In any case, that's too many versions to jump for my comfort. I'd so a clean install. It might be an interesting project to see what happens. Backup your install, and try. It'll only take time if it doesn't work.
 
Why in the world would you even attempt this? Fedora Core is no more, and it FC6 isn't anywhere close to RHEL 6. Do a clean install. You should have your data separate from the OS anyways, so it shouldn't be too painful.
 
lxskllr said:
They're closely related I think. Fedora's the community RedHat, and CentO/S is the debranded official RedHat if I'm not mistaken. In any case, that's too many versions to jump for my comfort. I'd so a clean install. It might be an interesting project to see what happens. Backup your install, and try. It'll only take time if it doesn't work.
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You're right, Fedora, CentOS, and RHEL are all related, but FC6 (it's no longer Fedora Core, it's just Fedora) is closer to RHEL 5 than RHEL 6. Even if you wanted to go from FC6 to RHEL 5 (or CentOS 5, same difference really) I wouldn't recommend it.
 
Going from FC up to a version of RHEL and then converting that to CenOS and updating that to current might work, if you go sequentially but it'll take forever and be a whole lot of work. That and Debian seems to be the only distro that actually gets in-place upgrades right. RedHat, Ubuntu, etc all seem to recommend clean installs for various reasons.
 
Nothinman said:
Going from FC up to a version of RHEL and then converting that to CenOS and updating that to current might work, if you go sequentially but it'll take forever and be a whole lot of work. That and Debian seems to be the only distro that actually gets in-place upgrades right. RedHat, Ubuntu, etc all seem to recommend clean installs for various reasons.
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Hell... CentOS recommends a clean install between CentOS 5 and CentOS 6. I can only imagine the headaches of adding a bunch of incompatible Fedora packages.
 
Yeah so clean install it is then. I'm even debating on if I want to go with something debian based, though think I'll stick with FC/CentOS as that's what I know better. In fact the latest FC looks nice as a desktop OS. It seems more geared towards that. Only reason I did go FC originally is that CentOS would not install on that box for some reason, but I'll try 6 as it may be ok.
 
FC9 is 3 1/2 revisions out of date with CentOS 6, plus add the fact that it is an odd revision, which means it is a beta build and more of a testbox than the even revisions.

This is how it worked, Red Hat had Fedora and RHEL. Fedora was testbed for RHEL. FC 6 was the beta build for RHEL 3. FC 7 was the alpha build for RHEL 4, with FC 8 being the beta RHEL 4, etc., etc.... Typically you will see a 6-9 month time-frame from when the even numbered FC's were released until when the next RHEL version is released. In many cases, you can directly use RHEL rpm's on the corresponding even numbered FC without any issue as they contain the same gcc, glibc, and librpm packages as well as many of the other packages. On an odd build of FC, well, it is really kind of a stand-alone where Red Hat might have been trying all kinds of wacky stuff with it and seeing how the customers reacted with having those packages included...

So, given that, I would never try upgrading a Fedora Core to any other Fedora Core. You "might" be able to get away with upgrading an even numbered Fedora Core to the RHEL/CentOS version that corresponds to it (divide the FC version by 2 and you get the RHEL/CentOS version number), but even then, why would you bother? You are really just better off rebuilding from scratch, just saving off your home directory or data areas...
 
lxskllr said:
They're closely related I think.
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i was under the impression that centos was a separate project to rebrand rhel sources and that fedora was used as a testing distro, more or less, for rhel development.

as such, i meant that the projects are not related (which is my understanding), not that the software itself is not at all related

i was a little unclear, i suppose, but i thought it fairly obvious that updating from an old version of fedora to a modern version of centos was an unsupported (nevermind probably bad and not worthwhile) endeavor.
 
CentOS is simply Red Hat without the Red Hat branding. Red Hat is obligated to release their source code that they used to build their distribution for free. The guys that provide CentOS take the source code from Red Hat, strip out the Red Hat logo packages/configuration information, and compile the source code, and release that.
 
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