feat: compute module

terraform/environments/dev/main.tf

@@ -2,7 +2,7 @@ terraform {
     required_providers {
         google = {
             source  = "hashicorp/google"
-            version = "~> 6.0"
+            version = "~> 6.12.0"
         }
     }
 }
@@ -12,14 +12,21 @@ provider "google" {
     region  = var.region
 }
 
-# Module Network
 module "network" {
-    source = "../../modules/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
+    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.subnet_ids["frontend"]
+    backend_subnet_id = module.network.subnet_ids["backend"]
+    database_subnet_id = module.network.subnet_ids["database"]
 }

terraform/environments/dev/variables.tf

@@ -24,7 +24,7 @@ variable "zone" {
 variable "instance_type" {
     description = "Type d'instance GCP"
     type        = string
-    default     = "n1-standard-1"
+    default     = "e2-small"
 }
 
 variable "frontend_cidr" {

terraform/modules/compute/main.tf

@@ -0,0 +1,67 @@
+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 {}
+        subnetwork = var.frontend_subnet_id
+    }
+
+    tags = ["frontend", "ssh"]
+
+    metadata = {
+        enable-oslogin = "TRUE"
+    }
+}
+
+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"
+    }
+}
+
+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"
+    }
+}

terraform/modules/compute/outputs.tf

@@ -0,0 +1,22 @@
+output "internal_ips" {
+    description = "IPs internes de toutes les instances"
+    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 "frontend_public_ip" {
+    description = "IP publique du frontend"
+    value       = google_compute_instance.frontend-vm.network_interface[0].access_config[0].nat_ip
+}
+
+output "instance_names" {
+    description = "Noms des instances"
+    value = {
+        frontend = google_compute_instance.frontend-vm.name
+        backend  = google_compute_instance.backend-vm.name
+        database = google_compute_instance.database-vm.name
+    }
+}

terraform/modules/compute/variables.tf

@@ -0,0 +1,24 @@
+variable "instance_type" {
+    description = "Type d'instance"
+    type        = string
+}
+
+variable "zone" {
+    description = "Zone GCP des instances"
+    type        = string
+}
+
+variable "frontend_subnet_id" {
+    description = "ID du sous-réseau frontend"
+    type        = string
+}
+
+variable "backend_subnet_id" {
+    description = "ID du sous-réseau backend"
+    type        = string
+}
+
+variable "database_subnet_id" {
+    description = "ID du sous-réseau database"
+    type        = string
+}

terraform/modules/network/main.tf

@@ -62,7 +62,7 @@ resource "google_compute_firewall" "allow_frontend_to_backend" {
         ports    = ["8000"]
     }
 
-    source_ranges = [var.frontend_cidr]
+    source_tags = ["frontend"]
     target_tags   = ["backend"]
 }
 
@@ -75,6 +75,6 @@ resource "google_compute_firewall" "allow_backend_to_database" {
         ports    = ["3306"]
     }
 
-    source_ranges = [var.backend_cidr]
+    source_tags = ["backend"]
     target_tags   = ["database"]
 }

terraform/modules/network/outputs.tf

@@ -6,8 +6,8 @@ output "vpc_id" {
 output "subnet_ids" {
     description = "IDs des sous-réseaux frontend, backend, database"
     value = {
-        frontend = google_compute_subnetwork.frontend.id
-        backend  = google_compute_subnetwork.backend.id
-        database = google_compute_subnetwork.database.id
+        "frontend" = google_compute_subnetwork.frontend.id
+        "backend"  = google_compute_subnetwork.backend.id
+        "database" = google_compute_subnetwork.database.id
     }
 }