> On 9/29/21 3:24 PM, 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... One problem which could show up here is that kernel packages have changed/splitted and therefore things are more complicated. At least that's what has happened in the past, don't know about 7->8. > > That specific step is probably useless. > Installing new kernels for Centos8 will sooner or later remove older > kernels coming form C7. > If you really want to do this manually you could specify the version on > your "rpm -e" command. > > If you are not ready to tweak the process a bit while upgrading and just > expect > a straightforward list of commands, well, as others have explained, there > is no guaranteed > script or method. > If instead you have enough familiarity with the system to work around the > obstacles, > "impossible" things can often be done: for example, years ago I've managed > to upgrade > a Fedora 16 from i386 to x86_64, and everybody was swearing it was > impossible to do. I can confirm that because I also migrated a server from i386 to x86_64 in place. That was with an old RHEL release. I don't remember exactly how I did it but I think I only used rpm for it, no yum. Unfortunately upgrading complex systems is still a lot of work these days, no matter what all the cloud experts try to tell you :-) Simon _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos