init repo

main.tf

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+provider "google" {
+  credentials = file(var.credentials_file)
+  project     = var.project_id
+  region      = var.region
+}
+
+module "firewall" {
+  source     = "./modules/firewall"
+  network_name = var.network_name
+  depends_on = [
+    module.vpc
+  ]
+}
+
+module "compute" {
+    source = "./modules/compute"
+    project_id = var.project_id
+    region = var.region
+    zone = var.zone
+    instance_type = var.instance_type
+    image_name = var.image_name
+    network_name = var.network_name
+    subnets_cidr_list = var.subnets_cidr_list
+    depends_on = [
+       module.vpc
+    ]
+}
+
+module "vpc" {
+  source            = "./modules/vpc"
+  network_name      = var.network_name
+  subnets_cidr_list = var.subnets_cidr_list
+  region = var.region
+  }

modules/compute/main.tf

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+# Create the first VM in the first zone
+resource "google_compute_instance" "vm1" {
+  name         = "vm1"
+  machine_type = var.instance_type
+  zone         = var.zone[0]
+  tags         = ["allow-ssh","allow-internal"]
+  boot_disk {
+    initialize_params {
+      image = var.image_name
+    }
+  }
+  network_interface {
+    network = var.network_name
+    subnetwork = "subnet-1"
+    access_config {
+      // Use ephemeral IP address
+      nat_ip = null
+    }
+  }
+  
+  metadata_startup_script = "apt-get update && apt-get install -y rsync"
+
+}
+
+# Create the second VM in the second zone
+resource "google_compute_instance" "vm2" {
+  name         = "vm2"
+  machine_type = var.instance_type
+  zone         = var.zone[1]
+  tags         = ["allow-ssh","allow-internal"]
+  boot_disk {
+    initialize_params {
+      image = var.image_name
+    }
+  }
+  network_interface {
+    network = var.network_name
+    subnetwork = "subnet-2"
+    access_config {
+      // Use ephemeral IP address
+      nat_ip = null
+    }                                   
+  }   
+                       
+  metadata_startup_script = "apt-get update && apt-get install -y rsync"
+
+}
+

modules/compute/outputs.tf

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+output "vm1_ip" {
+  value = google_compute_instance.vm1.network_interface[*].access_config[*].nat_ip
+}
+
+output "vm2_ip" {
+  value = google_compute_instance.vm2.network_interface[*].access_config[*].nat_ip
+}

modules/compute/variables.tf

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+variable "image_name" {}
+variable "instance_type" {}
+variable "zone" {}
+variable "project_id" {}
+variable "region" {}
+variable "network_name" {}
+variable "subnets_cidr_list" {}

modules/firewall/main.tf

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+resource "google_compute_firewall" "allow_internal" {
+  name          = "allow-internal"
+  network       = var.network_name
+  source_ranges = ["0.0.0.0/0"]
+  allow {
+    protocol = "icmp"
+  }
+  allow {
+    protocol = "tcp"
+    ports    = ["0-65535"]
+  }
+  allow {
+    protocol = "udp"
+    ports    = ["0-65535"]
+  }
+  target_tags = ["allow-internal"]
+
+}
+
+resource "google_compute_firewall" "allow-ssh" {
+    name          = "allow-ssh"
+  network       = var.network_name
+  source_ranges = ["0.0.0.0/0"]
+  allow {
+    protocol = "tcp"
+    ports = ["22"]
+  }
+  target_tags = ["allow-ssh"]
+
+  
+}

modules/firewall/variables.tf

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+variable "network_name" {}

modules/vpc/outputs.tf

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+output "vpc_network_name" {
+  value = google_compute_network.vpc_network.name
+}
+
+output "vpc_subnets" {
+  value = google_compute_subnetwork.vpc_subnets.*.self_link
+}

modules/vpc/variables.tf

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+variable "network_name" {
+  type        = string
+  description = "Name of the VPC network to create"
+}
+
+variable "subnets_cidr_list" {
+  type        = list(string)
+  default     = ["10.0.1.0/24", "10.0.2.0/24", "10.0.3.0/24", "10.0.4.0/24"]
+  description = "List of CIDR blocks for the subnets to create within the VPC network"
+}
+
+variable "region" {
+  type        = string
+  description = "Region where the VPC subnets will be created"
+}

outputs.tf

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+output "vpc_subnets_out" {
+    value = module.vpc.vpc_subnets
+}
+output "vm1_public_ip" {
+    value = module.compute.vm1_ip
+}
+output "vm2_public_ip" {
+    value = module.compute.vm2_ip
+}

terraform.tfvars

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+credentials_file = "credentials.json"
+project_id       = "linux-copy-demo"
+region           = "us-central1"
+zone = ["us-central1-a", "us-central1-b", "us-central1-c"]
+image_name       = "debian-cloud/debian-11"
+instance_type    = "n1-standard-1"
+network_name     = "my-vpc"
+
+subnets_cidr_list= ["10.0.1.0/24","10.0.2.0/24","10.0.3.0/24","10.0.4.0/24"]

variables.tf

@@ -0,0 +1,8 @@
+variable "credentials_file" {}
+variable "project_id" {}
+variable "region" {}
+variable "image_name" {}
+variable "instance_type" {}
+variable "zone" {type=list}
+variable "network_name" {}
+variable "subnets_cidr_list" { type=list}