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A README.md
D test.txt
A user-data

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+# CloudInit with partition configuration for Ubuntu 22.04 LTS
+It is possible to find some examples of CloudInit configuration on the documentation, but it can get hairy when it comes to configure the partitions and disk layout with `autoinstall`. 
+
+In my scenario, I have some machines with 500 GB SSD and I'd like to have 20% for the OS and 80% as a raw partition without file system usin the `autoinstall` for a full unattended installation. 
+
+After many tries, I've found a tip to do one installation manually (with a bootable pendrive for example) and do the all the partitioning configuration with the installation wizard. I will generate the `user-data` file necessary to replicate the same installation with CloudInit on the other machines. 
+
+At the end of the manual installation, it will ask to reboot/proceed, **dont do that**. At the top right corner, you can find a `Help` menu where you can access a shell console. 
+
+The file `/var/log/installer/autoinstall-user-data` holds all your choices from the installation wizard in a CloudInit format (it is the `user-data` file). You can export it to a TMP file sharing like [file.io](https://www.file.io/about):
+
+```bash
+curl -F "file=@/var/log/installer/autoinstall-user-data" https://file.io
+{"success":true,"key":"2ojE41","link":"https://file.io/2ojE41","expiry":"14 days"}
+```
+
+Then you can use or adapt it to further installations.

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+#cloud-config
+autoinstall:
+  version: 1
+  locale: en_US
+  keyboard:
+    layout: us
+  user-data:
+    # generate hostname dinamically - see 'early-commands' section
+    hostname: HOSTNAME_TO_REPLACE
+    timezone: Europe/Berlin
+    # ask user to change password after first login, pass never expires, default user 'ubuntu', pass 'ubuntu'
+    chpasswd:
+      expire: false
+      list:
+        - ubuntu:ubuntu
+  # Replace HOSTNAME_TO_REPLACE by srv-n, where n is an auto-increment counter
+  early-commands:
+    - sed -i -e "s/HOSTNAME_TO_REPLACE/node-$(curl -s http://192.168.10.1:8080/cgi-bin/counter.py)/" /autoinstall.yaml
+  # do not show the fingerprints of the authorized keys on the console
+  resize_rootfs: false
+  storage:
+    config:
+      - ptable: gpt
+        path: /dev/nvme0n1
+        wipe: superblock
+        preserve: false
+        name: ''
+        grub_device: false
+        type: disk
+        id: disk-nvme0n1
+        match:
+          size: largest
+      - device: disk-nvme0n1
+        size: 1127219200
+        wipe: superblock
+        flag: boot
+        number: 1
+        preserve: false
+        grub_device: true
+        offset: 1048576
+        type: partition
+        id: partition-6
+      - fstype: fat32
+        volume: partition-6
+        preserve: false
+        type: format
+        id: format-4
+      - device: disk-nvme0n1
+        size: 107374182400
+        wipe: superblock
+        number: 2
+        preserve: false
+        grub_device: false
+        offset: 1128267776
+        type: partition
+        id: partition-7
+      - fstype: ext4
+        volume: partition-7
+        preserve: false
+        type: format
+        id: format-5
+      - path: /
+        device: format-5
+        type: mount
+        id: mount-5
+      - device: disk-nvme0n1
+        size: 1073741824
+        wipe: superblock
+        flag: swap
+        number: 3
+        preserve: false
+        grub_device: false
+        offset: 108502450176
+        type: partition
+        id: partition-8
+      - fstype: swap
+        volume: partition-8
+        preserve: false
+        type: format
+        id: format-6
+      - path: ''
+        device: format-6
+        type: mount
+        id: mount-6
+      - device: disk-nvme0n1
+        size: 390530596864
+        number: 4
+        preserve: false
+        grub_device: false
+        offset: 109576192000
+        type: partition
+        id: partition-9
+      - path: /boot/efi
+        device: format-4
+        type: mount
+        id: mount-4
+    swap:
+      size: 0
+no_ssh_fingerprints: false
+  ssh_authorized_keys:
+    - ssh-rsa <PLBLIC-KEY-1>
+    - ssh-rsa <PUBLIC-KEY-2>
+  # enable ssh
+  ssh:
+    install-server: true
+    allow-pw: false
+    # do not print ssh host keys on the console
+    emit_keys_to_console: false<
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