feat: expose additional DNS outputs

src/cluster-regional.tf

@@ -5,7 +5,7 @@
 # https://www.terraform.io/docs/providers/aws/r/rds_cluster.html
 module "aurora_postgres_cluster" {
   source  = "cloudposse/rds-cluster/aws"
-  version = "1.18.0"
+  version = "2.1.1"
 
   cluster_type   = "regional"
   engine         = var.engine
@@ -14,6 +14,7 @@ module "aurora_postgres_cluster" {
   cluster_family = var.cluster_family
   instance_type  = var.instance_type
   cluster_size   = var.cluster_size
+  promotion_tier = var.promotion_tier
   admin_user     = local.admin_user
   admin_password = local.admin_password
 

src/outputs.tf

@@ -19,6 +19,21 @@ output "replicas_hostname" {
   description = "Postgres replicas hostname"
 }
 
+output "cluster_endpoint" {
+  value       = module.aurora_postgres_cluster.endpoint
+  description = "Postgres cluster endpoint"
+}
+
+output "reader_endpoint" {
+  value       = module.aurora_postgres_cluster.reader_endpoint
+  description = "Postgres reader endpoint"
+}
+
+output "instance_endpoints" {
+  value       = module.aurora_postgres_cluster.instance_endpoints
+  description = "List of Postgres instance endpoints"
+}
+
 output "cluster_identifier" {
   value       = module.aurora_postgres_cluster.cluster_identifier
   description = "Postgres cluster identifier"

src/variables.tf

@@ -205,6 +205,16 @@ variable "rds_monitoring_interval" {
   default     = 60
 }
 
+variable "promotion_tier" {
+  type        = number
+  default     = 0
+  description = <<-EOT
+    Failover Priority setting on instance level. The reader who has lower tier has higher priority to get promoted to writer.
+
+    Readers in promotion tiers 0 and 1 scale at the same time as the writer. Readers in promotion tiers 2–15 scale independently from the writer. For more information, see: https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/aurora-serverless-v2.how-it-works.html#aurora-serverless-v2.how-it-works.scaling
+  EOT
+}
+
 variable "autoscaling_enabled" {
   type        = bool
   default     = false