shared modules to be used across deployments

multiple/shared_modules/cloud-init.tf

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+resource "libvirt_cloudinit_disk" "commoninit" {
+  name           = var.cloudinit_filename
+  user_data      = templatefile("${path.module}/../environments/cloud_init.yaml", {})
+  pool           = var.pool_name
+  depends_on = [libvirt_pool.tf_tmp_storage]
+}

multiple/shared_modules/domain.tf

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+resource "libvirt_domain" "domain" {
+  count  = var.instance_count
+  name   = "${var.vm_name}-${count.index}"
+  memory = var.memory
+  vcpu   = var.vcpu
+  cloudinit = libvirt_cloudinit_disk.commoninit.id
+  cpu {
+    mode = "host-model"
+  }
+
+  disk {
+    volume_id = element(libvirt_volume.vm_disk.*.id, count.index)
+  }
+
+  console {
+    type        = "pty"
+    target_port = "0"
+    target_type = "virtio"
+  }
+
+  video {
+    type = "virtio"
+  }
+
+  tpm {
+    backend_type    = "emulator"
+    backend_version = "2.0"
+  }
+
+  network_interface {
+    network_name = var.network_name
+  }
+}

multiple/shared_modules/network.tf

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+resource "libvirt_network" "tf_libvirt_tmp_network" {
+  name = var.network_name
+  mode = var.network_mode
+  domain = var.network_domain
+  addresses = var.network_addresses
+  
+  dns {
+    enabled = var.dns_enabled
+    local_only = var.dns_local_only
+  }
+}

multiple/shared_modules/outputs.tf

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+output "pool_name" {
+  value = libvirt_pool.tf_tmp_storage.name
+}
+
+output "network_name" {
+  value = libvirt_network.tf_libvirt_tmp_network.name
+}
+
+output "network_addresses" {
+  value = libvirt_network.tf_libvirt_tmp_network.addresses
+}
+
+output "cloudinit_disk_id" {
+  value = libvirt_cloudinit_disk.commoninit.id
+}
+
+output "cloudinit_disk_name" {
+  value = libvirt_cloudinit_disk.commoninit.name
+}

multiple/shared_modules/pool.tf

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+resource "libvirt_pool" "tf_tmp_storage" {
+  name = var.pool_name
+  type = "dir"
+  target {
+    path = var.pool_path
+  }
+}

multiple/shared_modules/provider.tf

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+terraform {
+  required_version = ">= 0.13"
+  required_providers {
+    libvirt = {
+      source  = "dmacvicar/libvirt"
+      version = "0.8.3"
+    }
+  }
+}

multiple/shared_modules/variables.tf

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+variable "libvirt_uri" {
+  description = "URI for libvirt connection"
+  type        = string
+  default     = "qemu:///system"
+}
+
+variable "pool_name" {
+  description = "Name of the storage pool"
+  type        = string
+  default     = "tf_tmp_pool"
+}
+
+variable "pool_path" {
+  description = "Path for the storage pool"
+  type        = string
+  default     = "/tmp/tf_tmp_storage"
+}
+
+variable "instance_count" {
+  description = "Number of instances to create"
+  type        = number
+  default     = 1
+}
+
+variable "vm_name" {
+  description = "Name prefix for VMs"
+  type        = string
+}
+
+variable "image_location" {
+  description = "Location of the OS image"
+  type        = string
+  default     = "https://cloud-images.ubuntu.com/noble/current/noble-server-cloudimg-amd64.img"
+}
+# In order to avoid refetching the cloud ISO each time, it could could be set to a local directory, like : "/var/lib/libvirt/images/noble-server-cloudimg-amd64.img"
+
+# variable "cloudinit_user_data" {
+#   description = "User data for cloud-init"
+#   type        = string
+#   default     = <<EOF
+# #cloud-config
+# hostname: ubuntu-cloud-server
+# fqdn: ubuntu-cloud-server.tf.local
+# EOF
+# }
+
+# variable "cloud_init_file" {
+#   description = "Name of cloud-init config file"
+#   type        = optional(string)
+# }
+
+variable "cloudinit_filename" {
+  description = "Name of the cloud-init ISO file"
+  type        = string
+  default     = "commoninit.iso"
+}
+variable "user_data" {
+  description = "User data for cloud-init"
+  type        = string
+  default = "data.template_file.user_data.rendered"
+}
+
+variable "memory" {
+  description = "Memory allocation in MB"
+  type        = number
+  default     = 2048
+  validation {
+    condition     = var.memory >= 512
+    error_message = "Memory must be at least 512MB."
+  }
+}
+
+variable "vcpu" {
+  description = "Number of virtual CPUs"
+  type        = number
+  default     = 1
+}
+
+variable "network_name" {
+  description = "Name of the network"
+  type        = string
+  default     = "tf"
+}
+
+variable "network_mode" {
+  description = "Network mode (nat, none, route, open, bridge)"
+  type        = string
+  default     = "nat"
+}
+
+variable "network_domain" {
+  description = "Domain name for the network"
+  type        = string
+  default     = "tf.local"
+}
+
+variable "network_addresses" {
+  description = "List of network addresses"
+  type        = list(string)
+  default     = ["10.17.3.0/24", "2001:db8:ca2:2::1/64"]
+}
+
+variable "dns_enabled" {
+  description = "Enable DNS for the network"
+  type        = bool
+  default     = true
+}
+
+variable "dns_local_only" {
+  description = "DNS requests only resolved by virtual network's DNS server"
+  type        = bool
+  default     = false
+}

multiple/shared_modules/volume.tf

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+resource "libvirt_volume" "vm_disk" {
+  count  = var.instance_count
+  name   = "${var.vm_name}-${count.index}"
+  pool   = var.pool_name
+  source = var.image_location
+  format = "qcow2"
+
+  depends_on = [libvirt_pool.tf_tmp_storage]
+}