[CentOS] Upgrading CentOS from 7 to 8

Wed Sep 29 13:29:27 UTC 2021
J Martin Rushton <martinrushton56 at btinternet.com>

It's not supported.  RH has a method that sometimes works for RHEL, but 
there is no safe CentOS way to do a major upgrade.  You need to 
reinstall the OS and migrate your applications.

On 29/09/2021 14:24, Gestió Servidors wrote:
> Hi,
> I'm doing some tests of upgrading CentOS from 7 to 8 reading this step-by-step guide: https://netshopisp.medium.com/how-to-upgrade-linux-servecentos-7-to-centos-8-ec2db96a189b
> I'm trying this upgrade in a VM, so I can save "snapshots" and restart in a past saved point. However, all my test ends wrong, exacly in Step 4 when I run "rpm -e `rpm -q kernel`". Then, systems says that some packages are kernel dependencies. After I remove that dependencies, I can't remove kernel...
> Anybody has tested process upgrade from 7 to 8?
> Thanks.
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J Martin Rushton MBCS