On 9/29/21 8:29 AM, J Martin Rushton via CentOS wrote: > 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. +1 The system "binary clone" of which CentOS is (or was rather) is not designed to be "upgraded". The routine way is: install new release, copy all accounts, and data from old system to it, install services, configure them to a degree possible close to what was on old system. This horse have been beaten to death. The problem someone asking this is a consequence it people not doing search first (I for one use duckduckgo), and reading all search reveals with open eyes, not picking something to one's liking. Like: I want to do an upgrade. No matter all search shows is: "install new release,...". I did find one post about upgrade. But why it doesn't work?! Just read any of other posts about upgrade, saying to the effect: it doesn't, shouldn't work, and going into various lengts of explaining why. I know what I said doesn't make pleasant reading, but it hopefully will help someone with "modus operandi". Valeri > > 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. >> >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> https://lists.centos.org/mailman/listinfo/centos >> > -- ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++