coreos: Support ignition files

[garrett]

Discussed in #1829

^{Originally posted by michaelschapira September 22, 2024}
I want to experiment with CoreOS. To boot / install and ignition file needs to be provided.
As per documentation several CLI parameters need to be provided :
--qemu-commandline="-fw_cfg name=opt/com.coreos/config,file=${IGNITION_CONFIG}"

Thanks.

[garrett]

Somewhat related to:

• Allow adding authorized SSH keys when using cloud base images #431
• Authorized SSH keys for VM's based on cloud image #1150

Although those were related to username and password, we'd probably have to do something like that in that area of the create modal to support ignition configuration for CoreOS.

[jelly]

If a custom CLI parameter needs to be provided we ought to let osinfo solve this for us. https://gitlab.com/libosinfo/osinfo-db

[garrett]

I should clarify and rename this issue. It's not really about custom support, but support for ignition files, which CoreOS needs.

https://docs.fedoraproject.org/en-US/fedora-coreos/getting-started/#_booting_on_a_local_hypervisor_libvirt_example

(docs.fedoraproject.org is currently down for me, so here's a recent archive:
https://web.archive.org/web/20240607090151/https://docs.fedoraproject.org/en-US/fedora-coreos/getting-started/#_booting_on_a_local_hypervisor_libvirt_example )

[jelly]

Related but interesting, suse hosts an ignition generator https://opensuse.github.io/fuel-ignition/edit