From Fedora Project Wiki
Install Fedora CoreOS and modify kernel arguments as described in the documentation.
- Download and verify the latest FCOS next image (pick the right image for your environment).
How to test
- Create an Ignition file. When writing the configuration, add a
kernel_argumentssection following the example in the documentation. You don't necessarily have to use the same kernel arguments from the documentation, but you can.
- Launch your Fedora CoreOS system using this Ignition file. See the Quickstart and the provisioning docs for a guide how to launch FCOS in most environments (bare metal, virtual, cloud, etc).
- You can SSH successfully into your FCOS system.
- The kernel arguments (as seen in the /proc/cmdline file) are as specified in the Ignition config.
- The kernel arguments persist across reboots.
- The kernel arguments can be removed/added/edited via
rpm-ostree kargsas described in the documentation.
- The linked documentation makes sense, nothing is obviously missing, and the instructions are clear.