Upgrade from centos 3.x to 4.x

Hello,

Is there an easy way to upgarde a centos 3.4 OS to a centos 4.x OS ?

do I simply have to change the yum.conf to add this line :

[base]
name=CentOS-$releasever - Base
baseurl=http://mirror.centos.org/centos/4.1/os/i386/

then run yum update

or directly run something like
rpm -Uvh http://mirror.centos.org/centos/4.1/os/i386/CentOS/RPMS/centos-release-4-1.2.i386.rpm

then update the yum.conf to gave the centos 4 tree

Thanks

Pascal

do I simply have to change the yum.conf to add this line :

[base]
name=CentOS-$releasever - Base
baseurl=http://mirror.centos.org/centos/4.1/os/i386/

??

Thanks

Pascal

You should be able to Pascal and I do know of 1 or 2 folks doing so with iworx installed.

!!! THIS IS JUST MY THEORY AND SHOULD NOT BE DONE ON PRODUCTION BOXES. I HAVE NEVER TESTED THIS OVER MAJOR VERSIONS OF CENTOS !!!

Install the 4.0 “centos-release” RPM manuallly from the centos repository. Then ‘yum upgrade’ (NOT yum update) and you should be updated to centos 4 from 3.x.

While I was typign this I searched on the centos forums and found:

http://www.centos.org/modules/newbb/viewtopic.php?topic_id=654&viewmode=flat&order=ASC&start=0

Which I’m sure is more authoritative :).

Chris

So if there is one or two folks with iworx already installed you recommand me to not upgrade to centos 4 ?

In fact I’d liek to do this to also upgrade to kernel 2.6 and I know that centos 4 has better improvment for kernel 2.6 smp and Ht

Pascal

There are 1 or 2 folks I know have done the 3.x to 4.x upgrade with iworx installed. I have no other details so I’m not sure if it was an ongoing success or what, which is why I’m simply cautios.

Chris

As was mentioned in the release announcement and has been repeated time and again - the yum upgrade route is not supported for a move to CentOS 4.

It’s true that some people in the thread you told about has successfuly upgraded to centos 4 from centos 3.4 but with a lot of pbms and high risks

So the best thing I think is to upgrade by downloading just the single boot.iso file and run the installer to download + install over the internet or to use the remote boot images and setup grub to load those next time I reboot or via a vnc solution

well I’ll ask to my DC.

Thanks Chris for the info

Pascal