I'm on the server / infrastructure team at my organization. There is a dedicated Splunk team, and they want to replace some RHEL7 Splunk servers with RHEL 8. RHEL 8 is already near the end of its lifecycle, and I'd rather provide them with RHEL 9, which is now our standard build. The fact that they still use RHEL 7 servers gives you some sense of how long it takes them to move their application to a new(ish) OS. They are insistent that we deploy them RHEL 8 servers so they are "all the same." I want to encourage them to move forward and have a platform that will be fully supported for several years to come. Is having some servers on RHEL 8 and some on RHEL 9 for a period of time an actual problem? They use version 9.1.2. I found this document: https://docs.splunk.com/Documentation/Splunk/9.1.2/Installation/Systemrequirements It lists support both for x86_64 kernels 4.x (rhel 😎 and 5.x (rhel 9). It doesn't elaborate any further. I know that for various reasons we'd want to eventually have all servers on the same OS version; I'm just wondering if having RHEL 8 and RHEL 9 coexist for a limited period presents an actual problem. I'd appreciate your thoughts. Daniel
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