Add open tofu configuration base

Author: KristijanFaust-OET

infrastructure/.gitignore

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+.terraform
+*.tfstate*
+*.tfvars

infrastructure/.terraform.lock.hcl

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+terraform {
+    required_providers {
+        google = {
+            source = "hashicorp/google"
+            version = "~> 4.0"
+        }
+    }
+}
+
+# GCP provider configuration
+provider "google" {
+    credentials = file(var.gcp_service_key_path)
+    project = var.project_id
+    zone = var.zone
+}
+
+# Variables
+variable "project_id" {
+    description = "GCP Project ID"
+    type = string
+}
+
+variable "zone" {
+    description = "GCP Zone"
+    type = string
+    default = "europe-west4-a"
+}
+
+variable "gcp_service_key_path" {
+  description = "Path to the GCP credentials JSON file"
+  type        = string
+}
+
+variable "ssh_user" {
+    description = "SSH username"
+    type        = string
+    default     = ""
+}
+
+variable "ssh_key_path" {
+    description = "Path to SSH public key file"
+    type        = string
+    default     = ""
+}
+
+variable "instance_name" {
+    description = "Name of the instance"
+    type = string
+    default = "benchmark-instance"
+}
+
+# Test Instance
+resource "google_compute_instance" "c4_instance" {
+    name = var.instance_name
+    machine_type = "c4-standard-2"
+    zone = var.zone
+
+    boot_disk {
+        initialize_params {
+            image = "debian-cloud/debian-11"
+            size = 50 # Size in GB
+        }
+    }
+
+    network_interface {
+        network = "default"
+        access_config {
+            // Ephemeral public IP
+        }
+    }
+
+    # Only set SSH keys if variables are provided
+    metadata = {
+        ssh-keys = var.ssh_user != "" && var.ssh_key_path != "" ? "${var.ssh_user}:${file(var.ssh_key_path)}" : null
+    }
+
+    service_account {
+        scopes = ["cloud-platform"]
+    }
+
+}
+
+# Outputs
+output "instance_ip" {
+    value = google_compute_instance.c4_instance.network_interface[0].access_config[0].nat_ip
+}
+output "instance_id" {
+    value = google_compute_instance.c4_instance.id
+}