Ubuntu autoinstall YAML file with custom disk partitioning (EFI, boot, root, backups)

autoinstall.yaml

autoinstall:
  
  version: 1

  locale: "en_US.UTF-8" # default
  
  refresh-installer:
    update: false # default
      
  keyboard:
    layout: "us" # default
    variant: "" # default
  
  source:
    id: ubuntu-desktop-minimal # default
  
  identity:
    realname: "ubuntu"
    username: ubuntu
    password: "$6$_____j1" # Use 'openssl passwd -6' to generate a hash
    hostname: ubuntu
  
  timezone: "Europe/Berlin"
  
  ssh:
    install-server: true
    allow-pw: true
      
  codecs:
    install: true
  
  drivers:
    install: true
  
  storage:
    config:

      # disks

      - type: disk
        id: disk0
        name: disk0
        ptable: gpt
        grub_device: false

      # partitions

      - type: partition
        id: esp
        device: disk0
        size: 1G
        flag: boot
        number: 1
        wipe: superblock
        grub_device: true

      - type: partition
        id: boot
        device: disk0
        size: 2G
        number: 2

      - type: partition
        id: root
        device: disk0
        size: 40G
        wipe: superblock
        number: 3
        
      - type: partition
        id: backups
        device: disk0
        size: -1
        number: 4
        
      # logical volumes
      
      - type: lvm_volgroup
        id: vgroot
        name: vgroot
        devices:
          - root

      - type: lvm_partition
        id: lvroot
        name: lvroot
        volgroup: vgroot
        wipe: superblock
        size: 20G
        
      # file systems

      - type: format
        id: esp-format
        volume: esp
        fstype: fat32

      - type: format
        id: boot-format
        volume: boot
        fstype: ext4

      - type: format
        id: lvroot-format
        volume: lvroot
        fstype: ext4

      - type: format
        id: backups-format
        volume: backups
        fstype: ext4

      # mount points

      - type: mount
        id: efi-mount
        device: esp-format
        path: /boot/efi
      
      - type: mount
        id: boot-mount
        device: boot-format
        path: /boot
      
      - type: mount
        id: root-mount
        device: lvroot-format
        path: /
      
      - type: mount
        id: backups-mount
        device: backups-format
        path: /media/backups