darkmuggle Ignition.json

fcct.yaml

variant: fcos
version: 1.0.0
storage:
  links:
    - path: /home/core/.ssh/authorized_keys
      target: /home/core/.ssh/authorized_keys.d
      user:
        name: core
passwd:
  users:
   - name: core
     ssh_authorized_keys:
      - "ssh-rsa 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 ben@porpentina"
systemd:
  units:
    - name: serial-getty@ttyS0.service
      dropins:
      - name: autologin-core.conf
        contents: |
          [Service]
          # Override Execstart in main unit
          ExecStart=
          # Add new Execstart with `-` prefix to ignore failure
          ExecStart=-/usr/sbin/agetty --autologin core --noclear %I $TERM
          TTYVTDisallocate=no

Replace the ssh_authorized_keys with your user's key.
Use fcct to convert: fcct < ~/.auth/fcos.yaml
This should automatically give you a login console to debug.