suite

terraform/environments/dev/main.tf

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+# À vous de :
+# 1. Configurer le provider google
+# 2. Appeler les trois modules avec les bonnes variables
+# 3. Créer le fichier de configuration Ansible (template)
+
+terraform {
+  required_providers {
+    google = {
+      source  = "hashicorp/google"
+      version = "~> 6.12.0"
+    }
+  }
+}
+
+provider "google" {
+  project = var.project_id
+  region  = var.region
+}
+
+module "network" {
+  source            = "../../modules/network"
+  project_name      = var.project_name
+  region           = var.region
+  frontend_cidr    = var.frontend_cidr
+  backend_cidr     = var.backend_cidr
+  database_cidr    = var.database_cidr
+  ssh_source_ranges = var.ssh_source_ranges
+}
+
+module "compute" {
+  source           = "../../modules/compute"
+  instance_type    = var.instance_type
+  zone             = var.zone
+  frontend_subnet_id = module.network.subnets.frontend
+  backend_subnet_id = module.network.subnets.backend
+  database_subnet_id = module.network.subnets.database
+}
+
+module "iam" {
+  source          = "../../modules/iam"
+  project_id      = var.project_id
+}

terraform/environments/dev/outputs.tf

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+output "ip_internes" {
+  value = module.compute.ip_internes
+}
+
+output "ip_public_frontend" {
+  value = module.compute.ip_public_frontend
+}
+
+output "nom_instances" {
+  value = module.compute.nom_instances
+}
+
+output "service_account_email" {
+  description = "Email du compte de service Terraform."
+  value       = module.iam.email   
+}
+
+output "service_account_key" {
+  description = "Clé privée du compte de service Terraform (sensitive)."
+  value       = module.iam.key      
+  sensitive   = true
+}
+output "vpc" {
+  value = module.network.vpc
+}
+
+output "subnets" {
+    value = module.network.subnets
+}

terraform/environments/dev/variables.tf

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+# définissez toutes les variables nécessaires avec des valeurs par défaut appropriées.
+
+variable "project_name" {
+  description = "Nom du projet"
+  type        = string
+  default     = "My First Project"
+}
+
+variable "region" {
+  description = "Region du projet"
+  type        = string
+  default     = "europe-west9"
+}
+
+variable "frontend_cidr" {
+  description = "CIDR for frontend subnet"
+  type        = string
+  default     = "10.0.1.0/24"
+}
+
+variable "backend_cidr" {
+  description = "CIDR for backend subnet"
+  type        = string
+  default     = "10.0.2.0/24"
+}
+
+variable "database_cidr" {
+  description = "CIDR for database subnet"
+  type        = string
+  default     = "10.0.3.0/24"
+}
+
+variable "ssh_source_ranges" {
+  description = ""
+  type        = string
+  default     = "0.0.0.0/0"
+}
+
+variable "project_id" {
+  description = "ID du projet"
+  type        = string
+  default     = "fourth-palisade-478713-i3"
+}
+
+variable "instance_type" {
+  description = "type de l'instance"
+  type = string
+  default = "e2-small"
+}
+
+variable "zone" {
+  description = "Nom de la zone"
+  type = string
+  default = "europe-west9-b"
+}

terraform/modules/compute/main.tf

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+# À vous de créer :
+
+# 1. Instance frontend :
+#    - Image : debian-11
+#    - Disque : 10GB
+#    - IP publique
+#    - Tags : frontend, ssh
+#    - OS Login enabled
+
+# 2. Instance backend :
+#    - Image : debian-11
+#    - Disque : 10GB
+#    - Pas d'IP publique (interne seulement)
+#    - Tags : backend, ssh
+#    - OS Login enabled
+
+# 3. Instance database :
+#    - Image : debian-11
+#    - Disque : 20GB
+#    - Pas d'IP publique
+#    - Tags : database, ssh
+#    - OS Login enabled
+
+resource "google_compute_instance" "vm_frontend" {
+  name         = "vm-frontend"
+  machine_type = var.instance_type
+  zone         = var.zone
+
+  boot_disk {
+    initialize_params {
+      image = "debian-cloud/debian-11"
+      size  = 10
+    }
+  }
+
+  network_interface {
+    access_config {} # IP publique
+    subnetwork = var.frontend_subnet_id
+  }
+
+  tags = ["frontend", "ssh"]
+
+  metadata = {
+    enable-oslogin = "TRUE"
+  }
+}
+
+resource "google_compute_instance" "vm_backend" {
+  name         = "vm-backend"
+  machine_type = var.instance_type
+  zone         = var.zone
+
+  boot_disk {
+    initialize_params {
+      image = "debian-cloud/debian-11"
+      size  = 10
+    }
+  }
+
+  network_interface {
+    subnetwork = var.backend_subnet_id
+  }
+
+  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.database_subnet_id
+  }
+
+  tags = ["database", "ssh"]
+
+  metadata = {
+    enable-oslogin = "TRUE"
+  }
+}

terraform/modules/compute/outputs.tf

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+# À vous d'exposer :
+# 1. Les IPs internes de toutes les instances
+# 2. L'IP publique du frontend
+# 3. Les noms des instances
+
+output "ip_internes" {
+  value = {
+    frontend = google_compute_instance.vm_frontend.network_interface[0].network_ip
+    backend  = google_compute_instance.vm_backend.network_interface[0].network_ip
+    database = google_compute_instance.vm_database.network_interface[0].network_ip
+  }
+}
+
+output "ip_public_frontend" {
+  value = google_compute_instance.vm_frontend.network_interface[0].access_config[0].nat_ip
+}
+
+output "nom_instances" {
+  value = {
+    frontend = google_compute_instance.vm_frontend.name
+    backend = google_compute_instance.vm_backend.name
+    database = google_compute_instance.vm_database.name
+  }
+}

terraform/modules/compute/variables.tf

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+# À vous de définir les variables pour :
+# - instance_type
+# - zone
+# - frontend_subnet_id
+# - backend_subnet_id
+# - database_subnet_id
+
+variable "instance_type" {
+  description = "type de l'instance"
+  type = string
+}
+
+variable "zone" {
+  description = "Nom de la zone"
+  type = string
+}
+
+variable "frontend_subnet_id" {
+  description = "id du frontend"
+  type = string
+}
+
+variable "backend_subnet_id" {
+  description = "id du backend"
+  type = string
+}
+
+variable "database_subnet_id" {
+  description = "id du database"
+  type = string
+}

terraform/modules/iam/main.tf

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+# À vous de créer :
+# 1. Un compte de service pour Terraform
+# 2. Une clé pour ce compte de service
+# 3. Les rôles IAM nécessaires
+# 4. La configuration OS Login avec votre clé SSH
+
+resource "google_service_account" "service_account" {
+  account_id   = "terraform"
+  display_name = "terraform"
+}
+
+resource "google_service_account_key" "mykey" {
+  service_account_id = google_service_account.service_account.name
+  public_key_type    = "TYPE_X509_PEM_FILE"
+}
+
+resource "google_project_iam_binding" "custom_service_account" {
+  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" "cache" {
+  user    = data.google_client_openid_userinfo.me.email
+  key     = file("~/.ssh/id_ed25519.pub")
+  project = var.project_id
+}

terraform/modules/iam/outputs.tf

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+# À vous d'exposer :
+# 1. L'email du compte de service
+# 2. La clé du compte de service (sensitive = true)
+
+output "email" {
+  description = "Service account email."
+  value       = google_service_account.service_account.email
+}
+
+output "key" {
+  description = "Service account private key."
+  sensitive   = true
+  value       = google_service_account_key.mykey.private_key
+}

terraform/modules/iam/variables.tf

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+# À vous de définir :
+# - project_id (string)
+
+variable "project_id" {
+  description = "ID du projet"
+  type        = string
+}

terraform/modules/network/main.tf

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+# À vous de créer :
+# 1. Un VPC personnalisé avec auto_create_subnetworks = false
+# 2. Trois sous-réseaux (frontend, backend, database)
+# 3. Règles de firewall :
+#    - HTTP/HTTPS vers frontend
+#    - SSH vers toutes les instances
+#    - Port 8000 de frontend vers backend
+#    - Port 3306 de backend vers database
+
+# VPC
+resource "google_compute_network" "vpc_terraform" {
+  name                    = "vpc-terraform-2"
+  auto_create_subnetworks = false
+}
+
+# Sous-réseau
+resource "google_compute_subnetwork" "subnet_frontend" {
+  name          = "frontend-2"
+  network       = google_compute_network.vpc_terraform.id
+  ip_cidr_range = var.frontend_cidr
+  region        = var.region
+}
+
+resource "google_compute_subnetwork" "subnet_backend" {
+  name          = "backend-2"
+  network       = google_compute_network.vpc_terraform.id
+  ip_cidr_range = var.backend_cidr
+  region        = var.region
+}
+
+resource "google_compute_subnetwork" "subnet_database" {
+  name          = "database-2"
+  network       = google_compute_network.vpc_terraform.id
+  ip_cidr_range = var.database_cidr
+  region        = var.region
+}
+
+resource "google_compute_firewall" "allow_user_frontend" {
+  name    = "allow-user-frontend-2"
+  network = google_compute_network.vpc_terraform.id
+
+  allow {
+    protocol = "tcp"
+    ports    = ["80", "443"]
+  }
+
+  source_ranges = ["0.0.0.0/0"]
+  target_tags   = ["frontend"]
+}
+
+resource "google_compute_firewall" "allow_frontend_backend" {
+  name    = "allow-frontend-backend-2"
+  network = google_compute_network.vpc_terraform.id
+
+  allow {
+    protocol = "tcp"
+    ports    = ["8000"]
+  }
+
+  source_tags = ["frontend"]
+  target_tags   = ["backend"]
+}
+
+resource "google_compute_firewall" "allow_ssh_all" {
+  name    = "allow-ssh-all-2"
+  network = google_compute_network.vpc_terraform.id
+
+  allow {
+    protocol = "tcp"
+    ports    = ["22"]
+  }
+
+  source_ranges = ["0.0.0.0/0"]
+  target_tags   = ["ssh"]
+}
+
+resource "google_compute_firewall" "allow_backend_database" {
+  name    = "allow-backend-database-2"
+  network = google_compute_network.vpc_terraform.id
+
+  allow {
+    protocol = "tcp"
+    ports    = ["3306"]
+  }
+
+  source_tags = ["backend"]
+  target_tags   = ["database"]
+}

terraform/modules/network/outputs.tf

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+# À vous d'exposer :
+# 1. L'ID du VPC
+# 2. Les IDs des sous-réseaux sous forme de map
+
+output "vpc" {
+  value = google_compute_network.vpc_terraform.id
+}
+
+output "subnets" {
+    value = {
+        frontend = google_compute_subnetwork.subnet_frontend.id
+        backend = google_compute_subnetwork.subnet_backend.id
+        database = google_compute_subnetwork.subnet_database.id
+    }
+}

terraform/modules/network/variables.tf

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+# À vous de définir les variables pour :
+# - project_name (string)
+# - region (string)
+# - frontend_cidr (string)
+# - backend_cidr (string)
+# - database_cidr (string)
+# - ssh_source_ranges (string)
+
+variable "project_name" {
+  description = "Nom du projet"
+  type        = string
+}
+
+variable "region" {
+  description = "Region du projet"
+  type        = string
+}
+
+variable "frontend_cidr" {
+  description = "CIDR for frontend subnet"
+  type        = string
+}
+
+variable "backend_cidr" {
+  description = "CIDR for backend subnet"
+  type        = string
+}
+
+variable "database_cidr" {
+  description = "CIDR for database subnet"
+  type        = string
+}
+
+variable "ssh_source_ranges" {
+  description = ""
+  type        = string
+}