Hotfix for v2.0.2 RDS upgrade (#224)

* Update db.tf

* Update variables.tf

* Update CHANGELOG.md

* Update db.tf

CHANGELOG.md

@@ -3,6 +3,10 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [2.0.2-rds-upgrade] - 2023-01-15
+### Changed
+- Upgrade apiary RDS version from `aurora5.6` to `aurora-mysql5.7` 
+
 ## [2.0.2] - 2019-06-06
 
 ### Added

db.tf

@@ -54,9 +54,25 @@ resource "random_string" "db_master_password" {
   special = false
 }
 
+resource "aws_rds_cluster_parameter_group" "apiary_rds_param_group" {
+  name        = "${local.instance_alias}-param-group"
+  family      = "${var.rds_family}" # Needs to be kept in sync with aws_rds_cluster.apiary_cluster.engine and version
+  description = "Apiary-specific Aurora parameters"
+  tags        = merge(map("Name", "${local.instance_alias}-param-group"), "${var.apiary_tags}")
+
+  parameter {
+    name  = "max_allowed_packet"
+    value = "${var.rds_max_allowed_packet}"
+  }
+  lifecycle {
+    create_before_destroy = true
+  }
+}
+
 resource "aws_rds_cluster" "apiary_cluster" {
   count                               = "${ var.external_database_host == "" ? 1 : 0 }"
   cluster_identifier                  = "${local.instance_alias}-cluster"
+  engine                              = "${var.rds_engine}"
   database_name                       = "${var.apiary_database_name}"
   master_username                     = "${var.db_master_username}"
   master_password                     = "${random_string.db_master_password.result}"
@@ -68,6 +84,7 @@ resource "aws_rds_cluster" "apiary_cluster" {
   tags                                = "${var.apiary_tags}"
   final_snapshot_identifier           = "${local.instance_alias}-cluster-final-${random_id.snapshot_id.hex}"
   iam_database_authentication_enabled = true
+  db_cluster_parameter_group_name     = "${aws_rds_cluster_parameter_group.apiary_rds_param_group.name}"
   apply_immediately                   = "${var.db_apply_immediately}"
 
   lifecycle {
@@ -79,6 +96,7 @@ resource "aws_rds_cluster_instance" "apiary_cluster_instance" {
   count                = "${ var.external_database_host == "" ? var.db_instance_count : 0 }"
   identifier           = "${local.instance_alias}-instance-${count.index}"
   cluster_identifier   = "${aws_rds_cluster.apiary_cluster.id}"
+  engine               = "${var.rds_engine}"
   instance_class       = "${var.db_instance_class}"
   db_subnet_group_name = "${aws_db_subnet_group.apiarydbsg.name}"
   publicly_accessible  = false

variables.tf

@@ -344,3 +344,15 @@ variable "s3_lifecycle_policy_transition_period" {
   type        = "string"
   default     = "30"
 }
+
+variable "rds_family" {
+  description = "RDS family"
+  type        = "string"
+  default     = "aurora-mysql5.7"
+}
+
+variable "rds_engine" {
+  description = "RDS engine version"
+  type        = "string"
+  default     = "aurora-mysql"
+}