proxmox_vm_cloud-init.sh

This is simply a bash script that will allow you to create a fully customizable cloud-init image from proxmox cli.

This might also work without proxmox (using Qemu/KVM) but I have no tested it without proxmox.

Packages Requirements

Before you try running the script install these packages:

sudo apt-get install -y ovmf cloud-image-utils
sudo apt install whois
sudo apt-get install -y cloud-utils #optional not really required

Make the script executable

chmod +x ./proxmox_vm_cloud-init.sh

Run the script (cd to the folder the script is in)

./proxmox_vm_cloud-init.sh -i 1011 -n ubuntu-test-vm

./proxmox_vm_cloud-init.sh -i 1011 -n ubuntu-test-vm -m bc:24:11:00:00:00 -c https://cloud-images.ubuntu.com/noble/current/noble-server-cloudimg-amd64.img -s local-zfs -r 4096 -p 2 -d 20 -b vmbr0 -u username_to_configure --password-hash 'AAAA...' --ssh-key 'ssh-rsa AAAA...' -a amd64 -U http://gb.archive.ubuntu.com/ubuntu

The script also runs fine if you are using proxmox-port on arm64 (rpi4 for example) but you'll need to install proxmox using EFI boot.

To use it with proxmox-port just change the following option -a arm64 -U http://ports.ubuntu.com/ubuntu-ports

To find out more about running proxmox on a raspbeey pi --> proxmox-port

Command Options

You can use --help in any part of the command to display the various commands options available

Usage: ./proxmox_vm_cloud-init.sh [options] [version 1.0.0]

Options:
  -i, --vmid VMID                      *Specify the VM ID
  -n, --name VMNAME                    *Specify the VM name
  -m, --mac VMMAC                      Specify the VM MAC address (Omit for random PROXMOX Mac)
  -c, --cloudimage VMCLOUDINITURL      Specify the URL to download the Cloud-Init image
  -r, --ram RAM                        Specify the amount of RAM
  -p, --cpucores CPUCORES              Specify the number of CPU cores
  -s, --storage STORAGE                Specify the storage device
  -d, --disk-size DISK_SIZE            Specify the disk size increase in GB
  -b, --bridge BRIDGE                  Specify the network bridge
  -u, --username USERNAME              Specify the username
      --password-hash PASSWORD_HASH    Specify the password hash (echo 'mypasswordhere' | mkpasswd -m sha-512 -s)
      --ssh-key SSH_KEY                Specify the SSH public key
  -a, --arch ARCH                      Specify the architecture (e.g., amd64, arm)
  -U, --packages-url PACKAGES_URL      Specify the PACKAGES_URL for package updates
  -f, --force-download                 Force download the Cloud-Init image even if it already exists
  -h, --help                           Show this help message

   * mandatory arguments to run the script

Short command: (you must define values in the STATIC VARIABLE DECLARATION section of the script)
./proxmox_vm_cloud-init.sh -i 1011 -n ubuntu-test-vm

Long command:
./proxmox_vm_cloud-init.sh -i 1011 -n ubuntu-test-vm -m bc:24:11:00:00:00 -c https://cloud-images.ubuntu.com/noble/current/noble-server-cloudimg-amd64.img -s local-zfs -r 4096 -p 2 -d 20 -b vmbr0 -u username_to_configure --password-hash 'AAAA...' --ssh-key 'ssh-rsa AAAA...' -a amd64 -U http://gb.archive.ubuntu.com/ubuntu

The script takes a minimum number of 2 arguments/option:

-i or --vmid followed by the VMID

-n ot --mame followed by the VMNAME

Most of the other parameters are still mandatory but you can set predefined values for them by editing the script section "START OF STATIC VARIABLE DECLARATION

I might move this to a config file (instead of having to change the values in the script) in a future script update, but only if I can be bothered :-)