Added more modules

Author: akmshasan

environments/dev/vm.tf

@@ -1,10 +1,12 @@
+# Static Internal IP
 resource "google_compute_address" "dev_app_ip" {
   name         = "dev-app-1-ip"
   region       = "asia-southeast1"
   address_type = "INTERNAL"
   subnetwork   = module.subnets.subnet_ids["dev-vpc-a-subnet-1"]
 }
 
+# VM Instances
 module "vm_instances" {
   source     = "../../modules/vm_instance"
   depends_on = [module.vpc, module.subnets]
@@ -34,3 +36,31 @@ module "vm_instances" {
     }
   }
 }
+
+# Unmanaged Instance Groups
+module "instance_groups" {
+  source     = "../../modules/unmanaged_instance_group"
+  depends_on = [module.vm_instances]
+
+  instance_groups = {
+    "dev-umig-a" = {
+      name        = "dev-umig-a"
+      description = "Unmanaged instance group for dev apps"
+      zone        = "asia-southeast1-b"
+      instances = [
+        module.vm_instances.instance_self_links["dev-app-1"],
+      ]
+      network = module.vpc.vpc_networks["dev-vpc-a"].self_link
+      named_ports = [
+        {
+          name = "http"
+          port = 80
+        },
+        {
+          name = "https"
+          port = 443
+        }
+      ]
+    }
+  }
+}

modules/backend_service/main.tf

@@ -0,0 +1,23 @@
+terraform {
+  required_version = ">= 1.11.4"
+  required_providers {
+    google = {
+      source  = "hashicorp/google"
+      version = ">= 5.29"
+    }
+  }
+}
+
+resource "google_compute_backend_service" "default" {
+  for_each = var.backend_services
+
+  name                  = each.value.name
+  protocol              = "HTTP"
+  port_name             = "http"
+  timeout_sec           = 10
+  load_balancing_scheme = "EXTERNAL"
+  health_checks         = [each.value.health_check]
+  backend {
+    group = each.value.instance_group
+  }
+}

modules/backend_service/outputs.tf

@@ -0,0 +1,5 @@
+output "backend_service_self_links" {
+  value = {
+    for k, bs in google_compute_backend_service.default : k => bs.self_link
+  }
+}

modules/backend_service/variables.tf

@@ -0,0 +1,7 @@
+variable "backend_services" {
+  type = map(object({
+    name           = string
+    instance_group = string
+    health_check   = string
+  }))
+}

modules/health_check/main.tf

@@ -0,0 +1,24 @@
+terraform {
+  required_version = ">= 1.11.4"
+  required_providers {
+    google = {
+      source  = "hashicorp/google"
+      version = ">= 5.29"
+    }
+  }
+}
+
+resource "google_compute_health_check" "http" {
+  for_each = var.health_checks
+
+  name                = each.value.name
+  check_interval_sec  = each.value.check_interval_sec
+  timeout_sec         = each.value.timeout_sec
+  healthy_threshold   = each.value.healthy_threshold
+  unhealthy_threshold = each.value.unhealthy_threshold
+
+  http_health_check {
+    port         = each.value.http_port
+    request_path = each.value.request_path
+  }
+}

modules/health_check/outputs.tf

@@ -0,0 +1,5 @@
+output "health_check_self_links" {
+  value = {
+    for k, hc in google_compute_health_check.http : k => hc.self_link
+  }
+}

modules/health_check/variables.tf

@@ -0,0 +1,11 @@
+variable "health_checks" {
+  type = map(object({
+    name                = string
+    check_interval_sec  = number
+    timeout_sec         = number
+    healthy_threshold   = number
+    unhealthy_threshold = number
+    http_port           = number
+    request_path        = string
+  }))
+}

modules/lb/dns_record/main.tf

@@ -0,0 +1,7 @@
+resource "google_dns_record_set" "this" {
+  name         = var.record_name
+  type         = "A"
+  ttl          = var.ttl
+  managed_zone = var.managed_zone
+  rrdatas      = [var.ip_address]
+}

modules/lb/dns_record/outputs.tf

@@ -0,0 +1,3 @@
+output "fqdn" {
+  value = google_dns_record_set.this.name
+}

modules/lb/dns_record/variables.tf

@@ -0,0 +1,16 @@
+variable "record_name" {
+  type = string
+}
+
+variable "ttl" {
+  type    = number
+  default = 300
+}
+
+variable "managed_zone" {
+  type = string
+}
+
+variable "ip_address" {
+  type = string
+}