feat(mysql): aurora serverless

default.tf

@@ -1,9 +1,9 @@
 locals {
   default_mysql_cluster = {
     engine              = "aurora-mysql"
-    engine_mode         = "provisioned"
+    mode                = "provisioned"
     family              = "aurora-mysql5.7"
-    version             = "5.7.12"
+    version             = "5.7.mysql_aurora.2.07.1"
     port                = "3306"
     database            = "yourdb"
     user                = "yourid"
@@ -13,6 +13,13 @@ locals {
     backup_retention    = 7
     apply_immediately   = false
     cluster_parameters  = {}
+    scaling = {
+      auto_pause               = true
+      max_capacity             = 128
+      min_capacity             = 1
+      seconds_until_auto_pause = 300
+      timeout_action           = "ForceApplyCapacityChange"
+    }
   }
   default_mysql_instances = [
     {
@@ -23,7 +30,7 @@ locals {
 
   default_postgresql_cluster = {
     engine              = "aurora-postgresql"
-    engine_mode         = "provisioned"
+    mode                = "provisioned"
     family              = "aurora-postgresql11"
     version             = "11.7"
     port                = "5432"
@@ -35,6 +42,13 @@ locals {
     backup_retention    = 7
     apply_immediately   = false
     cluster_parameters  = {}
+    scaling = {
+      auto_pause               = true
+      max_capacity             = 128
+      min_capacity             = 1
+      seconds_until_auto_pause = 300
+      timeout_action           = "ForceApplyCapacityChange"
+    }
   }
   default_postgresql_instances = [
     {

examples/mysql/fixture.tc1.tfvars

@@ -5,7 +5,7 @@ name       = "aurora-mysql-tc1-multi-az"
 tags       = { test = "tc1" }
 aurora_cluster = {
   engine            = "aurora-mysql"
-  version           = "5.7.12"
+  version           = "5.7.mysql_aurora.2.07.1"
   port              = "3306"
   user              = "yourid"
   database          = "yourdb"

examples/mysql/fixture.tc2.tfvars

@@ -5,7 +5,7 @@ name       = "aurora-mysql-tc2-cluster-only"
 tags       = { test = "tc2" }
 aurora_cluster = {
   engine            = "aurora-mysql"
-  version           = "5.7.12"
+  version           = "5.7.mysql_aurora.2.07.1"
   port              = "3306"
   user              = "yourid"
   database          = "yourdb"

examples/mysql/fixture.tc3.tfvars

@@ -5,7 +5,8 @@ name       = "aurora-mysql-tc3-custom-pw"
 tags       = { test = "tc3" }
 aurora_cluster = {
   engine            = "aurora-mysql"
-  version           = "5.7.12"
+  family            = "aurora-mysql8.0"
+  version           = "8.0.mysql_aurora.3.01.0"
   port              = "3306"
   user              = "yourid"
   password          = "supersecret"

examples/mysql/fixture.tc4.tfvars

@@ -0,0 +1,17 @@
+aws_region = "ap-northeast-2"
+azs        = ["ap-northeast-2a", "ap-northeast-2b", "ap-northeast-2c"]
+cidrs      = ["10.0.0.0/16"]
+name       = "aurora-mysql-tc4-serverless"
+tags = {
+  test               = "tc4"
+  scaling            = "default"
+  serverless_version = "v1"
+}
+aurora_cluster = {
+  engine            = "aurora-mysql"
+  mode              = "serverless"
+  user              = "yourid"
+  database          = "yourdb"
+  apply_immediately = "false"
+}
+aurora_instances = []

examples/mysql/fixture.tc5.tfvars

@@ -0,0 +1,17 @@
+aws_region = "ap-northeast-2"
+azs        = ["ap-northeast-2a", "ap-northeast-2b", "ap-northeast-2c"]
+cidrs      = ["10.0.0.0/16"]
+name       = "aurora-mysql-tc5-serverless"
+tags = {
+  test               = "tc5"
+  scaling            = "customized"
+  serverless_version = "v1"
+}
+aurora_cluster = {
+  engine            = "aurora-mysql"
+  mode              = "serverless"
+  user              = "yourid"
+  database          = "yourdb"
+  apply_immediately = "false"
+}
+aurora_instances = []

examples/mysql/fixture.tc6.tfvars

@@ -0,0 +1,27 @@
+aws_region = "ap-northeast-2"
+azs        = ["ap-northeast-2a", "ap-northeast-2b", "ap-northeast-2c"]
+cidrs      = ["10.0.0.0/16"]
+name       = "aurora-mysql-tc6-serverlessv2"
+tags = {
+  test               = "tc6"
+  scaling            = "customized"
+  serverless_version = "v2"
+}
+aurora_cluster = {
+  engine            = "aurora-mysql"
+  family            = "aurora-mysql8.0"
+  version           = "8.0.mysql_aurora.3.02.0"
+  mode              = "provisioned"
+  user              = "yourid"
+  database          = "yourdb"
+  apply_immediately = "false"
+  scaling_v2 = {
+    max_capacity = 128.0
+    min_capacity = 0.5
+  }
+}
+aurora_instances = [
+  {
+    instance_type = "db.serverless"
+  },
+]

main.tf

@@ -66,7 +66,7 @@ resource "aws_db_parameter_group" "db" {
 resource "aws_rds_cluster" "db" {
   cluster_identifier                  = local.name
   engine                              = lookup(var.aurora_cluster, "engine", local.default_cluster.engine)
-  engine_mode                         = lookup(var.aurora_cluster, "engine_mode", local.default_cluster.engine_mode)
+  engine_mode                         = lookup(var.aurora_cluster, "mode", local.default_cluster.mode)
   engine_version                      = lookup(var.aurora_cluster, "version", local.default_cluster.version)
   port                                = lookup(var.aurora_cluster, "port", local.default_cluster.port)
   skip_final_snapshot                 = lookup(var.aurora_cluster, "skip_final_snapshot", local.default_cluster.skip_final_snapshot)
@@ -81,6 +81,25 @@ resource "aws_rds_cluster" "db" {
   vpc_security_group_ids              = coalescelist(aws_security_group.db.*.id, [])
   tags                                = merge(local.default-tags, var.tags)
 
+  dynamic "scaling_configuration" {
+    for_each = { for k, v in var.aurora_cluster : k => v if k == "scaling" }
+    content {
+      max_capacity             = lookup(scaling_configuration.value, "max_capacity", 256)
+      min_capacity             = lookup(scaling_configuration.value, "min_capacity", 2)
+      auto_pause               = lookup(scaling_configuration.value, "auto_pause", true)
+      seconds_until_auto_pause = lookup(scaling_configuration.value, "seconds_until_auto_pause", 300)
+      timeout_action           = lookup(scaling_configuration.value, "timeout_action", "ForceApplyCapacityChange")
+    }
+  }
+
+  dynamic "serverlessv2_scaling_configuration" {
+    for_each = { for k, v in var.aurora_cluster : k => v if k == "scaling_v2" }
+    content {
+      max_capacity = lookup(serverlessv2_scaling_configuration.value, "max_capacity", 128.0)
+      min_capacity = lookup(serverlessv2_scaling_configuration.value, "min_capacity", 0.5)
+    }
+  }
+
   lifecycle {
     ignore_changes        = [snapshot_identifier, master_password]
     create_before_destroy = true

variables.tf

@@ -23,6 +23,7 @@ variable "aurora_cluster" {
   description = "RDS Aurora for mysql cluster definition"
   default = {
     engine             = "aurora-mysql"
+    mode               = "provisioned" # Allowed values: global, multimaster, parallelquery, provisioned, serverless.
     version            = "5.7.12"
     port               = "3306"
     user               = "yourid"

versions.tf

@@ -2,4 +2,10 @@
 
 terraform {
   required_version = ">= 0.13"
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = ">= 4.0"
+    }
+  }
 }