RHEL VMs guests on a Rocky Linux host with kvm

#TBC

RHEL VM guests on a Windows host with VirtualBox

Target is to build two RHEL VMs on in Virtualbox on a Windows machine.

Virtualbox must always be executed as administrator.

The installation of the extension pack might fail many times. What worked for me is patience and repetition, until I saw the green tick in the menu.

Shared clipboard and shared folder features will not work even if you activate them from the Virtualbox menu. What helped is to mount the VboxGuestAdditions.iso file from the GUI, check it in the shell terminal with lsblk, register the VM to Red Hat CDN with sudo subscription-manager register and provide my registration account details, reboot the machine, issue a dnf repolist to refresh the DNF repos, install the kernel headers with dnf install kernel-devel-$(uname -r) and reboot the VM again.