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terraform/modules/iam/main.tf

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+# iam/main.tf
+
+# 1. Compte de service pour Terraform
+resource "google_service_account" "terraform_sa" {
+  account_id   = "terraform-sa"
+  display_name = "Terraform Service Account"
+  project      = var.project_id
+}
+
+# 2. Clé pour ce compte de service
+resource "google_service_account_key" "terraform_sa_key" {
+  service_account_id = google_service_account.terraform_sa.id
+  public_key_type    = "TYPE_X509_PEM_FILE"
+}
+
+# 3. Rôles IAM nécessaires
+resource "google_project_iam_member" "terraform_sa_roles" {
+  for_each = toset([
+    "roles/compute.admin",
+    "roles/iam.serviceAccountUser",
+    "roles/oslogin.admin",
+    "roles/viewer"
+  ])
+
+  project = var.project_id
+  role    = each.value
+  member  = "serviceAccount:${google_service_account.terraform_sa.email}"
+}
+
+# 4. Configuration OS Login avec clé SSH
+resource "google_os_login_ssh_public_key" "terraform_sa_ssh" {
+  username   = "terraform"
+  public_key = file("~/.ssh/id_rsa.pub")
+  project    = var.project_id
+}
+

terraform/modules/iam/outputs.tf

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+# iam/outputs.tf
+
+# 1. Email du compte de service
+output "service_account_email" {
+  description = "Email du compte de service Terraform"
+  value       = google_service_account.terraform_sa.email
+}
+
+# 2. Clé du compte de service (sensitive)
+output "service_account_key" {
+  description = "Clé privée du compte de service Terraform"
+  value       = google_service_account_key.terraform_sa_key.private_key
+  sensitive   = true
+}
+

terraform/modules/iam/variables.tf

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+# iam/variables.tf
+
+variable "project_id" {
+  description = "ID du projet GCP"
+  type        = string
+}
+