• Download and verify (GPG and SHA256) the newest Ubuntu Server 20.04 ISO
• Unpack the ISO and integrate the user-data file for semi-automated installation
• Repack the ISO and (optionally) upload it to PiKVM for futher installation

• covertsh for Ubuntu Autoinstall Generator – this repo is pretty much an Ansible version of their script

---
- hosts: all
  gather_facts: yes
  become: no

  roles:
    - role: notthebee.ubuntu_autoinstall

• boot_drive_serial – the serial number of the drive where you want to install Ubuntu. You can find it out using ls /dev/disk/by-id. Make sure to omit the interface (e.g. ata- or scsi-).

You can also use /dev/sd* to point the installer to the boot drive, but please, for the love of God, do not do that on a production server. The installer will wipe the drive specified in this playbook without confirmation or remorse.

Other variables are more or less self-explanatory and can be found in defaults/main.yml