fix: add lifecycle section for idempotency

terraform/projects/simple-vm/main.tf

@@ -0,0 +1,109 @@
+# Retrieve VM templates available in Proxmox that match the specified name
+data "proxmox_virtual_environment_vms" "template" {
+  filter {
+    name   = "name"
+    values = ["${var.vm_template}"] # The name of the template to clone from
+  }
+}
+
+# Create a cloud-init configuration file as a Proxmox snippet
+resource "proxmox_virtual_environment_file" "cloud_config" {
+  content_type = "snippets"        # Cloud-init files are stored as snippets in Proxmox
+  datastore_id = "local"           # Local datastore used to store the snippet
+  node_name    = var.node_name     # The Proxmox node where the file will be uploaded
+
+  source_raw {
+    file_name = "vm.cloud-config.yaml" # The name of the snippet file
+    data      = <<-EOF
+    #cloud-config
+    hostname: ${var.vm_name}
+    package_update: true
+    package_upgrade: true
+    packages:
+      - qemu-guest-agent           # Ensures the guest agent is installed
+    users:
+      - default
+      - name: ${var.vm_user}
+        groups: sudo
+        shell: /bin/bash
+        ssh-authorized-keys:
+          - "${var.vm_user_sshkey}" # Inject user's SSH key
+        sudo: ALL=(ALL) NOPASSWD:ALL
+    runcmd:
+      - systemctl enable qemu-guest-agent 
+      - reboot                     # Reboot the VM after provisioning
+    EOF
+  }
+}
+
+# Define and provision a new VM by cloning the template and applying initialization
+resource "proxmox_virtual_environment_vm" "vm" {
+  name      = var.vm_name           # VM name
+  node_name = var.node_name         # Proxmox node to deploy the VM
+  tags      = var.vm_tags           # Optional VM tags for categorization
+
+  agent {
+    enabled = true                  # Enable the QEMU guest agent
+  }
+
+  stop_on_destroy = true            # Ensure VM is stopped gracefully when destroyed
+
+  clone {
+    vm_id     = data.proxmox_virtual_environment_vms.template.vms[0].vm_id     # ID of the source template
+    node_name = data.proxmox_virtual_environment_vms.template.vms[0].node_name # Node of the source template
+  }
+
+  bios    = var.vm_bios             # BIOS type (e.g., seabios or ovmf)
+  machine = var.vm_machine          # Machine type (e.g., q35)
+
+  cpu {
+    cores = var.vm_cpu              # Number of CPU cores
+    type  = "host"                  # Use host CPU type for best compatibility/performance
+  }
+
+  memory {
+    dedicated = var.vm_ram          # RAM in MB
+  }
+
+  disk {
+    datastore_id = var.node_datastore # Datastore to hold the disk
+    interface    = "scsi0"             # Primary disk interface
+    size         = 4                   # Disk size in GB
+  }
+
+  initialization {
+    user_data_file_id = proxmox_virtual_environment_file.cloud_config.id # Link the cloud-init file
+    datastore_id      = var.node_datastore
+    interface         = "scsi1"             # Separate interface for cloud-init
+    ip_config {
+      ipv4 {
+        address = "dhcp"            # Get IP via DHCP
+      }
+    }
+  }
+
+  network_device {
+    bridge  = "vmbr0"               # Use the default bridge
+    vlan_id = var.vm_vlan           # VLAN tagging if used
+  }
+
+  operating_system {
+    type = "l26"                    # Linux 2.6+ kernel
+  }
+
+  vga {
+    type = "std"                    # Standard VGA type
+  }
+
+  lifecycle {
+    ignore_changes = [              # Ignore initialization section after first depoloyment for idempotency
+      initialization
+    ]
+  }
+}
+
+# Output the assigned IP address of the VM after provisioning
+output "vm_ip" {
+  value       = proxmox_virtual_environment_vm.vm.ipv4_addresses[1][0] # Second network interface's first IP
+  description = "VM IP"
+}

terraform/projects/simple-vm/provider.tf

@@ -0,0 +1,22 @@
+# Define the required Terraform provider block
+terraform {
+  required_providers {
+    proxmox = {
+      source = "bpg/proxmox" # Use the community Proxmox provider from the bpg namespace
+    }
+  }
+}
+
+# Configure the Proxmox provider with API and SSH access
+provider "proxmox" {
+  endpoint  = var.proxmox_endpoint  # Proxmox API URL (e.g., https://proxmox.local:8006/api2/json)
+  api_token = var.proxmox_api_token # API token for authentication (should have appropriate permissions)
+  insecure  = false                 # Reject self-signed or invalid TLS certificates (set to true only in trusted/test environments)
+
+  # Optional SSH settings used for VM customization via SSH
+  ssh {
+    agent       = false                        # Do not use the local SSH agent; use key file instead
+    private_key = file("~/.ssh/id_ed25519")    # Load SSH private key from the local file system
+    username    = "root"                       # SSH username for connecting to the Proxmox host
+  }
+}

terraform/projects/simple-vm/terraform.tfvars

@@ -0,0 +1,5 @@
+node_name = "zenith"     # Name of the Proxmox node where the VM will be deployed
+vm_name   = "zenith-vm"  # Desired name for the new virtual machine
+vm_cpu    = 2            # Number of CPU cores to allocate to the VM
+vm_ram    = 2048         # Amount of RAM in MB (2 GB)
+vm_vlan   = 66           # VLAN ID for network segmentation

terraform/projects/simple-vm/variables.tf

@@ -0,0 +1,80 @@
+variable "proxmox_endpoint" {
+  description = "Proxmox URL endpoint"
+  type        = string
+}
+
+variable "proxmox_api_token" {
+  description = "Proxmox API token"
+  type        = string
+  sensitive   = true
+}
+
+variable "node_name" {
+  description = "Proxmox host for the VM"
+  type        = string
+}
+
+variable "node_datastore" {
+  description = "Datastore used for VM storage"
+  type        = string
+  default     = "ceph-workload"
+}
+
+variable "vm_template" {
+  description = "Template of the VM"
+  type        = string
+  default     = "ubuntu-cloud"
+}
+
+variable "vm_name" {
+  description = "Hostname of the VM"
+  type        = string
+}
+
+variable "vm_user" {
+  description = "Admin user of the VM"
+  type        = string
+  default     = "vez"
+}
+
+variable "vm_user_sshkey" {
+  description = "Admin user SSH key of the VM"
+  type        = string
+  default     = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAID62LmYRu1rDUha3timAIcA39LtcIOny1iAgFLnxoBxm vez@bastion"
+}
+
+variable "vm_cpu" {
+  description = "Number of CPU cores of the VM"
+  type        = number
+  default     = 1
+}
+
+variable "vm_ram" {
+  description = "Number of RAM (MB) of the VM"
+  type        = number
+  default     = 2048
+}
+
+variable "vm_bios" {
+  description = "Type of BIOS used for the VM"
+  type        = string
+  default     = "ovmf"
+}
+
+variable "vm_machine" {
+  description = "Type of machine used for the VM"
+  type        = string
+  default     = "q35"
+}
+
+variable "vm_vlan" {
+  description = "VLAN of the VM"
+  type        = number
+  default     = 66
+}
+
+variable "vm_tags" {
+  description = "Tags for the VM"
+  type        = list(any)
+  default     = ["test"]
+}