Change from cloud init to ignition

ansible-kvm-vms/README.md

@@ -5,7 +5,7 @@ This project provides an Ansible-based framework to automatically provision virt
 ## 🚀 Features
 
 - **Automated Host Setup**: Installs and configures `libvirt`, `qemu-kvm`, and `libguestfs-tools`.
-- **Cloud-init Support**: Generates and injects Cloud-init user-data for all supported OSs via a NoCloud ISO.
+- **Ignition Support**: Generates and injects Ignition configuration for all supported OSs via the `fw_cfg` QEMU feature.
 - **Custom User Provisioning**: Automatically creates a default user with a hashed password and injects your SSH public key.
 - **Modular Design**: Uses Ansible roles for host preparation, configuration generation, and VM provisioning.
 
@@ -20,7 +20,7 @@ ansible-kvm-vms/
 │   └── vms.yml              # List of VMs to create with CPU, RAM, and Disk specs
 ├── roles/
 │   ├── kvm_host_setup/      # Installs virtualization dependencies on the host
-│   ├── os_config/           # Generates Ignition/Cloud-init config files
+│   ├── os_config/           # Generates Ignition configuration files
 │   └── vm_provision/        # Downloads images and creates VMs via virt-install
 └── playbooks/
     └── create_vms.yml       # Main orchestration playbook
@@ -65,8 +65,8 @@ Edit `vars/vms.yml` to add or modify the VMs you wish to deploy. You can specify
 ## 🔍 How it Works
 
 Since immutable OSs do not use traditional installers, this setup uses a "seed" approach:
-1. **Config Generation**: The `os_config` role creates a YAML Cloud-init user-data file based on your variables.
-2. **Deployment**: `virt-install` is used to create the VM with UEFI boot. The `--cloud-init` flag is used to attach the configuration as a NoCloud ISO, which the immutable OSs (CoreOS, Flatcar, MicroOS) process at first boot.
+1. **Config Generation**: The `os_config` role creates a JSON Ignition configuration file based on your variables.
+2. **Deployment**: `virt-install` is used to create the VM with UEFI boot. The `--sysinfo` flag is used to provide the Ignition config via the `fw_cfg` device, which the immutable OSs (CoreOS, Flatcar, MicroOS) process at first boot.
 
 ## 🌐 Accessing your VMs