Automatically set route53 records when autobalancer is created

k8s/route53/module.tf

@@ -0,0 +1,32 @@
+variable "hosted_zone_name" {
+  type = string
+}
+
+variable "record_name" {
+  type    = string
+  default = ""
+}
+
+data "aws_route53_zone" "current" {
+  name = var.hosted_zone_name
+}
+
+data "aws_lb" "public" {
+
+  tags = {
+    "service.k8s.aws/stack" = "default/mr-service"
+  }
+}
+
+resource "aws_route53_record" "www" {
+  name            = var.record_name == "" ? var.hosted_zone_name : var.record_name
+  type            = "A"
+  zone_id         = data.aws_route53_zone.current.id
+  allow_overwrite = true
+
+  alias {
+    evaluate_target_health = true
+    name                   = data.aws_lb.public.dns_name
+    zone_id                = data.aws_lb.public.zone_id
+  }
+}

module.tf

@@ -53,6 +53,16 @@ variable "region_account" {
   default = 602401143452
 }
 
+variable "hosted_zone_name" {
+  type    = string
+  default = ""
+}
+
+variable "record_name" {
+  type    = string
+  default = ""
+}
+
 provider "aws" {
   profile = "default"
   region  = var.region
@@ -128,6 +138,15 @@ module "service" {
   depends_on = [module.matchmaker, module.web_client]
 }
 
+module "route53" {
+  source     = "./k8s/route53"
+  depends_on = [module.service]
+  count      = min(length(var.hosted_zone_name), 1)
+
+  hosted_zone_name = var.hosted_zone_name
+  record_name      = var.record_name
+}
+
 # Comment this out if running for the first time (i.e. when `helm_agones` is not installed).
 module "agones" {
   source     = "./k8s/agones"