network

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"
+  auto_create_subnetworks = false
+}
+
+# Sous-réseau
+resource "google_compute_subnetwork" "subnet_frontend" {
+  name          = "frontend"
+  network       = google_compute_network.vpc_terraform.id
+  ip_cidr_range = "10.0.1.0/24"
+  region        = "europe-west9-b"
+}
+
+# Sous-réseau
+resource "google_compute_subnetwork" "subnet_backend" {
+  name          = "backend"
+  network       = google_compute_network.vpc_terraform.id
+  ip_cidr_range = "10.0.2.0/24"
+  region        = "europe-west9-b"
+}
+
+# Sous-réseau
+resource "google_compute_subnetwork" "subnet_database" {
+  name          = "database"
+  network       = google_compute_network.vpc_terraform.id
+  ip_cidr_range = "10.0.3.0/24"
+
+  region        = "europe-west9-b"
+}
+
+
+resource "google_compute_firewall" "allow_user_frontend" {
+  name    = "allow_user_frontend"
+  network = google_compute_network.vpc_terraform.id
+
+  allow {
+
+    protocol = "tcp"
+    ports    = ["80", "443"]
+  }
+
+  source_tags = ["0.0.0.0/0"]
+  target_tags   = ["frontend"]
+}
+
+resource "google_compute_firewall" "allow_frontend_backend" {
+  name    = "allow_frontend_backend"
+  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"
+  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"
+  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_terraform_output" {
+  value = google_compute_instance.vpc_terraform.id
+}
+
+output "list_id" {
+  value = {
+    frontend = google_compute_subnetwork.subnet_frontend.id
+    bakcend = google_compute_subnetwork.subnet_backend.id
+    databse = 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 = "La blase du projet"
+  type        = string
+}
+
+variable "region" {
+  description = "La région 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 = "Qui peut y accéder"
+  type        = string
+}