Add Aurora MySQL (#47)

* Add `aurora-mysql`

* Update `aurora-mysql`

Author: aknysh

aws/backing-services/aurora-mysql.tf

@@ -0,0 +1,91 @@
+# https://docs.aws.amazon.com/AmazonRDS/latest/APIReference/API_CreateDBInstance.html
+
+variable "MYSQL_NAME" {
+  type        = "string"
+  description = "Name of the application, e.g. `app` or `analytics`"
+  default     = "mysql"
+}
+
+variable "MYSQL_ADMIN_NAME" {
+  type        = "string"
+  description = "MySQL admin user name"
+}
+
+variable "MYSQL_ADMIN_PASSWORD" {
+  type        = "string"
+  description = "MySQL password for the admin user"
+}
+
+variable "MYSQL_DB_NAME" {
+  type        = "string"
+  description = "MySQL database name"
+}
+
+# https://aws.amazon.com/rds/aurora/pricing
+variable "MYSQL_INSTANCE_TYPE" {
+  type        = "string"
+  default     = "db.t2.small"
+  description = "EC2 instance type for Aurora MySQL cluster"
+}
+
+variable "MYSQL_CLUSTER_SIZE" {
+  type        = "string"
+  default     = "2"
+  description = "MySQL cluster size"
+}
+
+variable "MYSQL_CLUSTER_ENABLED" {
+  type        = "string"
+  default     = "false"
+  description = "Set to false to prevent the module from creating any resources"
+}
+
+variable "MYSQL_CLUSTER_PUBLICLY_ACCESSIBLE" {
+  default     = true
+  description = "Specifies the accessibility options for the DB instance. A value of true specifies an Internet-facing instance with a publicly resolvable DNS name, which resolves to a public IP address. A value of false specifies an internal instance with a DNS name that resolves to a private IP address"
+}
+
+module "aurora_mysql" {
+  source              = "git::https://github.com/cloudposse/terraform-aws-rds-cluster.git?ref=tags/0.7.0"
+  namespace           = "${var.namespace}"
+  stage               = "${var.stage}"
+  name                = "${var.MYSQL_NAME}"
+  engine              = "aurora-mysql"
+  cluster_family      = "aurora-mysql5.7"
+  instance_type       = "${var.MYSQL_INSTANCE_TYPE}"
+  cluster_size        = "${var.MYSQL_CLUSTER_SIZE}"
+  admin_user          = "${var.MYSQL_ADMIN_NAME}"
+  admin_password      = "${var.MYSQL_ADMIN_PASSWORD}"
+  db_name             = "${var.MYSQL_DB_NAME}"
+  db_port             = "3306"
+  vpc_id              = "${module.vpc.vpc_id}"
+  subnets             = ["${module.subnets.public_subnet_ids}"]                                           # Use module.subnets.private_subnet_ids if the cluster does not need to be publicly accessible
+  zone_id             = "${var.zone_id}"
+  enabled             = "${var.MYSQL_CLUSTER_ENABLED}"
+  publicly_accessible = "${var.MYSQL_CLUSTER_PUBLICLY_ACCESSIBLE}"
+}
+
+output "aurora_mysql_database_name" {
+  value       = "${module.aurora_mysql.name}"
+  description = "Database name"
+}
+
+output "aurora_mysql_master_username" {
+  value       = "${module.aurora_mysql.user}"
+  description = "Username for the master DB user"
+}
+
+output "aurora_mysql_master_hostname" {
+  value       = "${module.aurora_mysql.master_host}"
+  description = "DB Master hostname"
+}
+
+output "aurora_mysql_replicas_hostname" {
+  value       = "${module.aurora_mysql.replicas_host}"
+  description = "Replicas hostname"
+}
+
+output "aurora_mysql_cluster_name" {
+  value       = "${module.aurora_mysql.cluster_name}"
+  description = "Cluster Identifier"
+}

aws/backing-services/aurora-postgres.tf

@@ -1,3 +1,9 @@
+variable "POSTGRES_NAME" {
+  type        = "string"
+  description = "Name of the application, e.g. `app` or `analytics`"
+  default     = "postgres"
+}
+
 # Don't use `admin`
 # ("MasterUsername admin cannot be used as it is a reserved word used by the engine")
 variable "POSTGRES_ADMIN_NAME" {
@@ -38,24 +44,23 @@ variable "POSTGRES_CLUSTER_ENABLED" {
 }
 
 module "aurora_postgres" {
-  source             = "git::https://github.com/cloudposse/terraform-aws-rds-cluster.git?ref=tags/0.3.5"
-  namespace          = "${var.namespace}"
-  stage              = "${var.stage}"
-  name               = "postgres"
-  engine             = "aurora-postgresql"
-  cluster_family     = "aurora-postgresql9.6"
-  instance_type      = "${var.POSTGRES_INSTANCE_TYPE}"
-  cluster_size       = "${var.POSTGRES_CLUSTER_SIZE}"
-  admin_user         = "${var.POSTGRES_ADMIN_NAME}"
-  admin_password     = "${var.POSTGRES_ADMIN_PASSWORD}"
-  db_name            = "${var.POSTGRES_DB_NAME}"
-  db_port            = "5432"
-  vpc_id             = "${module.vpc.vpc_id}"
-  availability_zones = ["${data.aws_availability_zones.available.names}"]
-  subnets            = ["${module.subnets.private_subnet_ids}"]
-  zone_id            = "${var.zone_id}"
-  security_groups    = ["${module.kops_metadata.nodes_security_group_id}"]
-  enabled            = "${var.POSTGRES_CLUSTER_ENABLED}"
+  source          = "git::https://github.com/cloudposse/terraform-aws-rds-cluster.git?ref=tags/0.7.0"
+  namespace       = "${var.namespace}"
+  stage           = "${var.stage}"
+  name            = "${var.POSTGRES_NAME}"
+  engine          = "aurora-postgresql"
+  cluster_family  = "aurora-postgresql9.6"
+  instance_type   = "${var.POSTGRES_INSTANCE_TYPE}"
+  cluster_size    = "${var.POSTGRES_CLUSTER_SIZE}"
+  admin_user      = "${var.POSTGRES_ADMIN_NAME}"
+  admin_password  = "${var.POSTGRES_ADMIN_PASSWORD}"
+  db_name         = "${var.POSTGRES_DB_NAME}"
+  db_port         = "5432"
+  vpc_id          = "${module.vpc.vpc_id}"
+  subnets         = ["${module.subnets.private_subnet_ids}"]
+  zone_id         = "${var.zone_id}"
+  security_groups = ["${module.kops_metadata.nodes_security_group_id}"]
+  enabled         = "${var.POSTGRES_CLUSTER_ENABLED}"
 }
 
 output "aurora_postgres_database_name" {