Installing Image Builder on a RHEL 8 or 9 system

You can use image builder to create customized system images of RHEL, including system images prepared for deployment on cloud platforms. Image builder automatically handles the setup details for each output type and is therefore easier to use and faster to work with than manual methods of image creation. You can access the image builder functionality through a command-line interface in the composer-cli tool, or a graphical user interface in the RHEL web console.

source: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/composing_a_customized_rhel_system_image/composer-description_composing-a-customized-rhel-system-image

Image Builder should be the only use for the VM it is installed on. Do not skimp on it’s resources. 4 vCPUs, 8 GB of memory and 32 GB (minimum) should be enough to start with.

sudo yum update -y
sudo dnf install osbuild-composer composer-cli cockpit-composer bash-completion
sudo systemctl enable --now osbuild-composer.socket
sudo systemctl enable --now cockpit.socket

You can now access RHEL’s “Cockpit” and Image Builder at https://ip_address:9090/