Currently, the official procedure differs between RHEL8 and RHEL9.

- To install virtctl on Red Hat Enterprise Linux (RHEL) 9, Linux, Windows, and MacOS operating systems, you download and install the virtctl binary file.
- To install virtctl on RHEL 8, you enable the OpenShift Virtualization repository and then install the kubevirt-virtctl package.

https://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html/virtualization/getting-started#installing-virtctl_virt-using-the-cli-tools

Documentation tasks

• Update the documentation
• Add a release note in 4.21 release notes that RHEL8 is deprecated and removed.
• Also review the 4.21 documentation and determine whether there is any additional/related content that needs to be removed from the documentation.