Issue
OpenShift came from RedHat.
Does it mean I need to use RedHat OS when using OpenShift?
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Solution
OKD (upstream, open source for OpenShift) uses Fedora CoreOS: https://docs.okd.io/latest/architecture/architecture.html#architecture-custom-os_architecture
OpenShift uses RHEL CoreOS: https://docs.openshift.com/container-platform/4.7/architecture/architecture-rhcos.html
These are the required operating systems because the cluster itself is actually tied to the underlying operating system to enable over the air upgrades.
Answered By - Will Gordon Answer Checked By - Candace Johnson (WPSolving Volunteer)