Libérable !

tp-cloud/terraform/environments/dev/main.tf

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+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.backend
+
+}
+
+module "iam" {
+  source          = "../../modules/iam"
+  project_id      = var.project_id
+}

tp-cloud/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" {
+  value = module.iam.service_account_email
+}
+
+output "service_account_key" {
+  sensitive = true
+  value = module.iam.service_account_key
+}
+
+output "vpc" {
+  value = module.network.vpc_terraform_output
+}
+
+output "subnets" {
+    value = module.network.subnets
+}

tp-cloud/terraform/environments/dev/variables.tf

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+variable "instance_type" {
+  description = "type de l'instance" 
+  type        = string
+  default     = "e2-small"
+}
+
+variable "zone" {
+  description = "région"
+  type        = string
+  default     = "europe-west1-b"
+}
+
+
+
+
+
+
+variable "project_id" {
+
+  description = "ID du projet GCP dans lequel appliquer les règles IAM"
+  type        = string
+  default     = "gifted-chimera-424007-g1"
+}
+
+
+
+
+
+
+
+
+
+variable "project_name" {
+  description = "Nom du projet"
+  type        = string
+  default     = "My First Project"
+}
+
+variable "region" {
+  description = "Région"
+  type        = string
+  default     = "europe-west1"
+}
+
+variable "frontend_cidr" {
+  description = "CIDR du frontend"
+  type        = string
+  default     = "10.0.1.0/24"
+}
+
+variable "backend_cidr" {
+  description = "CIDR du backend"
+  type        = string
+  default     = "10.0.2.0/24"
+
+}
+
+variable "database_cidr" {
+  description = "CIDR de la  database"
+  type        = string
+  default     = "10.0.3.0/24"
+}
+
+variable "ssh_source_ranges" {
+  description = "Plages IP autorisées pour SSH"
+  type        = string
+  default     = "0.0.0.0/0"
+  
+}
+

tp-cloud/terraform/modules/compute/main.tf

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+
+# Instance front-end
+
+resource "google_compute_instance" "frontend_vm" {
+  name         = "frontend-vm"
+  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
+
+    # IP publique
+  }
+
+  tags = ["frontend", "ssh"]
+
+  metadata = {
+    enable-oslogin = "TRUE"
+  }
+}
+
+# Instance back-end
+
+resource "google_compute_instance" "backend_vm" {
+  name         = "backend-vm"
+  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"
+  }
+}
+
+
+# Instance data-base
+
+resource "google_compute_instance" "database_vm" {
+  name         = "database-vm"
+  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"
+  }
+}
+

tp-cloud/terraform/modules/compute/outputs.tf

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+output "ip_internes" {
+  value = {
+    frontend = google_compute_instance.frontend_vm.network_interface[0].network_ip
+    backend  = google_compute_instance.backend_vm.network_interface[0].network_ip
+    database = google_compute_instance.database_vm.network_interface[0].network_ip
+  }
+}
+
+output "ip_public_frontend" {
+  value = google_compute_instance.frontend_vm.network_interface[0].access_config[0].nat_ip
+}
+
+output "nom_instances" {
+  value = {
+    frontend = google_compute_instance.frontend_vm.name
+    backend  = google_compute_instance.backend_vm.name
+    database = google_compute_instance.database_vm.name
+  }
+}

tp-cloud/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 = "région"
+  type = string
+}
+
+variable "frontend_subnet_id" {
+  description = "front-end id"
+  type = string
+}
+
+variable "backend_subnet_id" {
+  description = "back-end id"
+  type = string
+}
+
+variable "database_subnet_id" {
+  description = "database id"
+  type = string
+}

tp-cloud/terraform/modules/iam/main.tf

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+
+# Compte service terraform
+
+resource "google_service_account" "terraform_sa" {
+  account_id   = "terraform-sa"
+  display_name = "terraform compte service"
+}
+
+resource "google_service_account_key" "terraform_sa_key" {
+  service_account_id = google_service_account.terraform_sa.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.terraform_sa.email}",
+  ]
+}
+
+data "google_client_openid_userinfo" "me" {
+}
+
+resource "google_os_login_ssh_public_key" "cache" {
+  user =  data.google_client_openid_userinfo.me.email
+  project = var.project_id
+  key = file("~/.ssh/id_ed25519.pub")
+}

tp-cloud/terraform/modules/iam/outputs.tf

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+output "service_account_email" {
+  description = "Service account email."
+  value = google_service_account.terraform_sa.email
+}
+
+output "service_account_key" {
+  description = "Service account key."
+  sensitive   = true
+  value       = google_service_account_key.terraform_sa_key.private_key
+}
+

tp-cloud/terraform/modules/iam/variables.tf

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+variable "project_id" {
+  description = "ID du projet GCP dans lequel appliquer les règles IAM"
+  type        = string
+}

tp-cloud/terraform/modules/network/main.tf

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+# VPC
+resource "google_compute_network" "vpc" {
+  name                    = "vpc"
+  auto_create_subnetworks = false
+}
+
+# Sous-réseau
+# front-end
+resource "google_compute_subnetwork" "frontend" {
+  name          = "frontend-subnet"
+  network       = google_compute_network.vpc.id
+  ip_cidr_range = "10.0.1.0/24"
+  region        = "europe-west1"
+}
+
+# back-end
+resource "google_compute_subnetwork" "backend" {
+  name          = "backend-subnet"
+  network       = google_compute_network.vpc.id
+  ip_cidr_range = "10.0.2.0/24"
+  region        = "europe-west1"
+}
+
+# data-base
+resource "google_compute_subnetwork" "database" {
+  name          = "database-subnet"
+  network       = google_compute_network.vpc.id
+  ip_cidr_range = "10.0.3.0/24"
+  region        = "europe-west1"
+}
+
+
+
+# Règles de Pare-feu
+
+#    - HTTP/HTTPS vers frontend
+resource "google_compute_firewall" "allow_http" {
+  name    = "allow-http"
+  network = google_compute_network.vpc.id
+
+  allow {
+    protocol = "tcp"
+    ports    = ["80", "443"]
+  }
+
+  source_ranges = ["0.0.0.0/0"]
+  target_tags   = ["frontend"]
+}
+
+#    - SSH vers toutes les instances
+resource "google_compute_firewall" "allow_ssh" {
+  name    = "allow-ssh"
+  network = google_compute_network.vpc.id
+
+  allow {
+    protocol = "tcp"
+    ports    = ["22"]
+  }
+
+  source_ranges = ["0.0.0.0/0"]
+  target_tags   = ["ssh"]
+}
+
+#    - Port 8000 de frontend vers backend
+resource "google_compute_firewall" "frontend_to_backend" {
+  name    = "frontend-to-backend"
+  network = google_compute_network.vpc.id
+
+  allow {
+    protocol = "tcp"
+    ports    = ["8000"]
+  }
+
+  source_tags = ["frontend"]
+  target_tags = ["backend"]
+}
+
+
+#    - Port 3306 de backend vers database
+resource "google_compute_firewall" "backend_to_database" {
+  name    = "backend-to-database"
+  network = google_compute_network.vpc.id
+
+  allow {
+    protocol = "tcp"
+    ports    = ["3306"]
+  }
+
+  source_tags = ["backend"]
+  target_tags = ["database"]
+}

tp-cloud/terraform/modules/network/outputs.tf

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+output "vpc_terraform_output" {
+  value = google_compute_network.vpc.id
+}
+
+output "subnets" {
+    value = {
+        frontend = google_compute_subnetwork.frontend.id
+        backend =  google_compute_subnetwork.backend.id
+        database = google_compute_subnetwork.database.id
+    }
+}

tp-cloud/terraform/modules/network/variables.tf

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+variable "project_name" {
+  description = "Nom du projet"
+  type        = string
+}
+
+variable "region" {
+  description = "Région"
+  type        = string
+}
+
+variable "frontend_cidr" {
+  description = "CIDR du frontend"
+  type        = string
+}
+
+variable "backend_cidr" {
+  description = "CIDR du backend"
+  type        = string
+}
+
+variable "database_cidr" {
+  description = "CIDR de la  database"
+  type        = string
+}
+
+variable "ssh_source_ranges" {
+  description = "Plages IP autorisées pour SSH"
+  type        = string
+}
+