IAM

terraform/environments/dev/main.tf

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+terraform {
+  required_providers {
+    google = {
+      source  = "hashicorp/google"
+      version = "~> 6.0"
+    }
+  }
+}
+
+provider "google" {
+  project = var.project_id
+  region  = var.region
+}
+
+module "network" {
+  source = "../../modules/network"
+  
+  # Variables d'entrée
+  project_name = var.project_name
+  region      = var.region
+  
+  # Autres variables spécifiques au module
+  backend_cidr = var.backend_cidr
+  frontend_cidr = var.frontend_cidr
+  database_cidr = var.database_cidr
+  ssh_source_ranges = var.ssh_source_ranges
+}
+
+module "compute" {
+  source = "../../modules/compute"
+  
+  # Variables d'entrée
+  sub1 = module.network.subnet["frontend"]
+  sub2 = module.network.subnet["backend"]
+  sub3 = module.network.subnet["database"]
+
+  # Autres variables spécifiques au module
+  zone = var.zone
+  instance_type = var.instance_type
+}
+
+
+module "iam" {
+  source     = "../../modules/iam"
+  project_id = var.project_id
+}
+
+data "google_client_openid_userinfo" "me" {
+}
+
+resource "local_file" "ansible_config" {
+  content = templatefile("${path.module}/../../templates/ansible.cfg.tpl",
+    {
+      remote_user = data.google_client_openid_userinfo.me.email
+    }
+  )
+  filename = "../../../ansible/ansible.cfg"
+}
+
+resource "local_file" "service_account" {
+  content  = base64decode(module.iam.service_account_key)
+  filename = "../../../ansible/service_account.json"
+}

terraform/environments/dev/variables.tf

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+variable "project_id" {
+  description = "ID du projet GCP"
+  type        = string
+  default     = "secret-proton-443214-n6"
+}
+
+variable "project_name" {
+  description = "nom_du_projet"
+  type        = string
+  default     = "terraforming"
+}
+
+variable "region" {
+  description = "emplacement"
+  type        = string
+  default     = "europe-west4"
+}
+
+variable "frontend_cidr" {
+  description = "addr_front"
+  type        = string
+  default     = "10.0.1.0/24"
+}
+
+variable "backend_cidr" {
+  description = "addr_back"
+  type        = string
+  default     = "10.0.2.0/24"
+}
+
+variable "database_cidr" {
+  description = "addr_bdd"
+  type        = string
+  default     = "10.0.3.0/24"
+}
+
+variable "ssh_source_ranges" {
+  description = "addr_ssh"
+  type        = string
+  default     = "0.0.0.0/0"
+}
+
+variable "instance_type" {
+  description = "type d'instance"
+  type        = string
+  default     = "e2-micro"
+}
+
+variable "zone" {
+  description = "zone"
+  type        = string
+  default     = "europe-west4-a"
+}
+

terraform/modules/compute/main.tf

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+resource "google_compute_instance" "vm-front" {
+  name         = "vm-front"
+  machine_type = var.instance_type
+  zone         = var.zone
+
+  boot_disk {
+    initialize_params {
+      image = "debian-cloud/debian-11"
+      size  = 10
+    }
+  }
+  network_interface {
+    subnetwork = var.sub1
+    access_config {} # IP publique
+  }
+
+  tags = ["web", "ssh"]
+
+  metadata = {
+    enable-oslogin = "TRUE"
+  }
+}
+
+
+resource "google_compute_instance" "vm-back" {
+  name         = "vm-back"
+  machine_type = var.instance_type
+  zone         = var.zone
+
+  boot_disk {
+    initialize_params {
+      image = "debian-cloud/debian-11"
+      size  = 10
+    }
+  }
+
+  network_interface {
+    subnetwork = var.sub2
+    access_config {} # IP publique
+  }
+
+  tags = ["backend", "ssh"]
+
+  metadata = {
+    enable-oslogin = "TRUE"
+  }
+}
+
+resource "google_compute_instance" "vm-database" {
+  name         = "vm-database"
+  machine_type = var.instance_type
+  zone         = var.zone
+
+  boot_disk {
+    initialize_params {
+      image = "debian-cloud/debian-11"
+      size  = 20
+    }
+  }
+
+  network_interface {
+    subnetwork = var.sub3
+    access_config {} # IP publique
+  }
+
+  tags = ["database", "ssh"]
+
+  metadata = {
+    enable-oslogin = "TRUE"
+  }
+}
+
+

terraform/modules/compute/outputs.tf

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+output "Intern"{
+    value = {
+        ip_front = google_compute_instance.vm-front.network_interface[0].network_ip,
+        ip_back = google_compute_instance.vm-back.network_interface[0].network_ip,
+        ip_db = google_compute_instance.vm-database.network_interface[0].network_ip
+    }
+}
+
+output "frontend_public_ip" {
+    value = google_compute_instance.vm-front.network_interface[0].access_config[0].nat_ip 
+}
+output "name"{
+    value = {
+        name_frontend = google_compute_instance.vm-front.name
+        name_backend  = google_compute_instance.vm-back.name
+        name_database = google_compute_instance.vm-database.name
+    }
+}

terraform/modules/compute/variables.tf

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+variable "instance_type" {
+  description = "type d'instance"
+  type        = string
+}
+
+variable "zone" {
+  description = "zone"
+  type        = string
+}
+
+variable "sub1"{
+  description = "subnet1 frontend"
+  type        = string
+}
+
+variable "sub2"{
+  description = "subnet2 backend"
+  type        = string
+}
+
+variable "sub3"{
+  description = "subnet3 database"
+  type        = string
+}
+

terraform/modules/iam/main.tf

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+resource "google_service_account" "service_account" {
+  account_id   = "terraform"
+  display_name = "terraform"
+}
+
+resource "google_service_account_key" "service_account" {
+  service_account_id = google_service_account.service_account.name
+  public_key_type    = "TYPE_X509_PEM_FILE"
+}
+
+resource "google_project_iam_binding" "service_account_roles" {
+  project = var.project_id
+  role    = "roles/viewer"
+  members = ["serviceAccount:${google_service_account.service_account.email}"]
+}
+
+data "google_client_openid_userinfo" "me" {
+}
+
+resource "google_os_login_ssh_public_key" "add_my_key" {
+  project = var.project_id
+  user    = data.google_client_openid_userinfo.me.email
+  key     = file("~/.ssh/id_ed25519.pub")
+}

terraform/modules/iam/outputs.tf

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+output "service_account_email" {
+  description = "Email du compte de service"
+  value       = google_service_account.service_account.email
+}
+
+output "service_account_key" {
+  description = "Clé du compte de service"
+  value       = google_service_account_key.service_account.private_key
+  sensitive   = true
+}

terraform/modules/iam/variables.tf

@@ -0,0 +1,5 @@
+# modules/iam/variables.tf
+variable "project_id" {
+  description = "ID du projet GCP"
+  type        = string
+}

terraform/modules/network/main.tf

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+resource "google_compute_network" "vpc" {
+  name                    = "net1"
+  auto_create_subnetworks = false
+}
+
+# Sous-réseau
+resource "google_compute_subnetwork" "subnet1" {
+  name          = "frontend"
+  network       = google_compute_network.vpc.id
+  ip_cidr_range = var.frontend_cidr
+  region        = var.region
+}
+
+resource "google_compute_subnetwork" "subnet2" {
+  name          = "backend"
+  network       = google_compute_network.vpc.id
+  ip_cidr_range = var.backend_cidr
+  region        = var.region
+}
+
+resource "google_compute_subnetwork" "subnet3" {
+  name          = "database"
+  network       = google_compute_network.vpc.id
+  ip_cidr_range = var.database_cidr
+  region        = var.region
+}
+
+resource "google_compute_firewall" "allow_http" {
+  name    = "rule-http"
+  network = google_compute_network.vpc.id
+
+  allow {
+    protocol = "tcp"
+    ports    = ["80", "443"]
+  }
+
+  source_ranges = ["0.0.0.0/0"]
+  target_tags   = ["web"]
+}
+
+resource "google_compute_firewall" "allow_ssh" {
+  name    = "allow-ssh"
+  network = google_compute_network.vpc.id
+
+  allow {
+    protocol = "tcp"
+    ports    = ["22"]
+  }
+
+  source_ranges = [var.ssh_source_ranges]
+  target_tags   = ["ssh"]
+}
+
+resource "google_compute_firewall" "front_to_back" {
+  name    = "front-to-back"
+  network = google_compute_network.vpc.id
+
+  allow {
+    protocol = "tcp"
+    ports    = ["8000"]
+  }
+
+  source_tags = ["web"]
+  target_tags   = ["backend"]
+}
+
+resource "google_compute_firewall" "back_to_bdd" {
+  name    = "back-to-bdd"
+  network = google_compute_network.vpc.id
+
+  allow {
+    protocol = "tcp"
+    ports    = ["8000"]
+  }
+
+  source_tags = ["backend"]
+  target_tags   = ["database"]
+}

terraform/modules/network/outputs.tf

@@ -0,0 +1,11 @@
+output "vpc"{
+    value = google_compute_network.vpc.id
+}
+
+output "subnet" {
+  value = {
+    frontend = google_compute_subnetwork.subnet1.id,
+    backend = google_compute_subnetwork.subnet2.id,
+    database = google_compute_subnetwork.subnet3.id
+  }
+}

terraform/modules/network/variables.tf

@@ -0,0 +1,30 @@
+variable "project_name" {
+  description = "nom_du_projet"
+  type        = string
+}
+
+variable "region" {
+  description = "emplacement"
+  type        = string
+}
+
+variable "frontend_cidr" {
+  description = "addr_front"
+  type        = string
+}
+
+variable "backend_cidr" {
+  description = "addr_back"
+  type        = string
+}
+
+variable "database_cidr" {
+  description = "addr_bdd"
+  type        = string
+}
+
+variable "ssh_source_ranges" {
+  description = "addr_ssh"
+  type        = string
+}
+