In the Katello documentation, there is a “tested” and a supported os section: Foreman :: Manual
I have installed Katello 4.12 on CentOS 8 Stream. This OS is out of support. Is it a good idea to switch to RHEL 9? This would be my preferred way, but I have some bad experiences in the past with Katello 3.8-3.12 and RHEL.
thanks very much for your answer. In the past, Foreman with Katello Plugin was tested on CentOS, but was supported RedHat, too. This was the reason, why we switched from RedHat to CentOS (than CentOS stream), because there was some package dependency pain on RedHat Releases (RHEL7).
What should we do now? Should we proceed with CentOS Stream 9 (EL9) or can we switch back to RedHat 9, because Foreman with Katello plugin will be tested on RHEL9?
I only want to take care, that the application foreman and katello runs on a plattform you (foreman devs) are using for testing.