Create Ubuntu Cloud Init Template with Guest tools installed

ubuntuTemplate.sh

#!/bin/bash

# Function to prompt for password
prompt_for_password() {
    read -s -p "Enter root password for the image: " ROOT_PASSWORD
    echo
}

# Check for existing image
if [ -f "noble-server-cloudimg-amd64.img" ] || [ -f "$HOME/noble-server-cloudimg-amd64.img" ]; then
    echo "Image file found, skipping download."
else
    echo "Image file not found, downloading..."
    wget https://cloud-images.ubuntu.com/noble/current/noble-server-cloudimg-amd64.img
fi

# Update and install required packages
sudo apt update -y && sudo apt install libguestfs-tools -y

# Install qemu-guest-agent on the image
sudo virt-customize -a noble-server-cloudimg-amd64.img --install qemu-guest-agent

# Prompt for root password
prompt_for_password

# Create a temporary password file
echo "$ROOT_PASSWORD" > password_root.txt

# Set root user password from the temporary file
sudo virt-customize -a noble-server-cloudimg-amd64.img --root-password file:password_root.txt

# Delete temporary password file safely
shred -uv password_root.txt

# Update all packages in the image
sudo virt-customize -a noble-server-cloudimg-amd64.img --update

# Create a Proxmox VM template
qm create 2404 --memory 2048 --cores 2 --name U2404 --net0 virtio,bridge=vmbr0
qm importdisk 2404 noble-server-cloudimg-amd64.img local-lvm
qm set 2404 --scsihw virtio-scsi-pci --scsi0 local-lvm:vm-2404-disk-0
qm set 2404 --ide2 local-lvm:cloudinit
qm set 2404 --boot c --bootdisk scsi0
qm set 2404 --serial0 socket --vga serial0

# Final message
echo "VM template created successfully. You can now clone this template or use it with Terraform Proxmox, etc."
echo "SSH login is only possible with user 'ubuntu' and SSH keys specified in the cloud-init image."