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> I never had a CentOS upgrade go smoothly; We'd usually just reinstall everything from config management AFAIK CentOS does not support distro-upgrades (eg. up

> I never had a CentOS upgrade go smoothly; We'd usually just reinstall everything from config management AFAIK CentOS does not support distro-upgrades (eg. upgrading from CentOS 6 to CentOS 7)[1], we always end up making a fresh install whenever we want to upgrade, i've tried to use the UpgradeTool a few times but it didn't work (there was always something blocking the upgrade). I believe this would be a point for Debian, the upgrade between releases just work :) [1]https://wiki.centos.org/TipsAndTricks/CentOSUpgradeTool https://wiki.centos.org/TipsAndTricks/CentOSUpgradeTool

jsight 9y ago
Yeah, in-place upgrades between CentOS releases are not really supported, just as they are not really supported with RHEL. However, this also comes with a perk. CentOS releases are generally the "current" release for at least three years, as opposed to two with Debian. Also, major releases are supported with critical security updates for years after they are no longer current. For example, CentOS 6 will still receive patches until November 2020. Of course, whether this is important to you will vary based upon your needs. For some, the 2 year releases with an easy upgrade path between major releases will be the more important factor.
xemdetia 9y ago
Having dealt with in the past RHEL 6 to 7 is supported but only for the server edition: https://access.redhat.com/solutions/637583 https://access.redhat.com/solutions/637583. At a certain point I'm not sure what Debian does so much better, but that's just because I have not really needed to investigate it to the same depth as RHEL.
lima 9y ago
It will probably work for 7 -> 8, the upgrade tool is a recent addition. It already worked in RHEL for 6 -> 7. That being said, for RHEL 6 -> 7 I did a clean reinstall due to the large architectural changes and it was the right decision.

jsight 9y ago

Yeah, in-place upgrades between CentOS releases are not really supported, just as they are not really supported with RHEL. However, this also comes with a perk. CentOS releases are generally the "current" release for at least three years, as opposed to two with Debian. Also, major releases are supported with critical security updates for years after they are no longer current. For example, CentOS 6 will still receive patches until November 2020. Of course, whether this is important to you will vary based upon your needs. For some, the 2 year releases with an easy upgrade path between major releases will be the more important factor.

xemdetia 9y ago

Having dealt with in the past RHEL 6 to 7 is supported but only for the server edition: https://access.redhat.com/solutions/637583 https://access.redhat.com/solutions/637583. At a certain point I'm not sure what Debian does so much better, but that's just because I have not really needed to investigate it to the same depth as RHEL.

lima 9y ago

It will probably work for 7 -> 8, the upgrade tool is a recent addition. It already worked in RHEL for 6 -> 7. That being said, for RHEL 6 -> 7 I did a clean reinstall due to the large architectural changes and it was the right decision.