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[aws/backing-services] Add RDS replica (#85)
* Add replica * pin to a release * Update aws/backing-services/rds-replica.tf Co-Authored-By: osterman <[email protected]> * Update aws/backing-services/rds-replica.tf Co-Authored-By: osterman <[email protected]> * Change default
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‎aws/backing-services/rds-replica.tf‎

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variable "rds_replica_name" {
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type = "string"
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default = "rds-replica"
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description = "RDS instance name"
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}
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variable "rds_replica_enabled" {
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type = "string"
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default = "false"
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description = "Set to false to prevent the module from creating any resources"
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}
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variable "rds_replica_replicate_source_db" {
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type = "string"
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description = "Specifies that this resource is a Replicate database, and to use this value as the source database. This correlates to the identifier of another Amazon RDS Database to replicate. Note that if you are creating a cross-region replica of an encrypted database you will also need to specify a `kms_key_id`."
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default = "changeme"
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}
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variable "rds_replica_kms_key_id" {
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type = "string"
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description = "The ARN for the KMS encryption key. If creating an encrypted replica, set this to the destination KMS ARN."
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default = ""
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}
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# db.t2.micro is free tier
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# https://aws.amazon.com/rds/free
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variable "rds_replica_instance_type" {
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type = "string"
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default = "db.t2.micro"
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description = "EC2 instance type for RDS DB"
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}
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variable "rds_replica_port" {
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type = "string"
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default = "3306"
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description = "RDS DB port"
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}
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variable "rds_replica_snapshot" {
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type = "string"
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default = ""
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description = "Set to a snapshot ID to restore from snapshot"
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}
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variable "rds_replica_multi_az" {
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type = "string"
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default = "false"
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description = "Run instaces in multiple az"
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}
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variable "rds_replica_storage_type" {
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type = "string"
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default = "gp2"
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description = "Storage type"
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}
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variable "rds_replica_storage_size" {
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type = "string"
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default = "20"
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description = "Storage size in Gb"
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}
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variable "rds_replica_storage_encrypted" {
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type = "string"
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default = "true"
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description = "Set to true to encrypt storage"
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}
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variable "rds_replica_auto_minor_version_upgrade" {
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type = "string"
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default = "true"
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description = "Allow automated minor version upgrade (e.g. from Postgres 9.5.3 to Postgres 9.5.4)"
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}
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variable "rds_replica_allow_major_version_upgrade" {
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type = "string"
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default = "false"
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description = "Allow major version upgrade"
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}
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variable "rds_replica_apply_immediately" {
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type = "string"
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default = "true"
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description = "Specifies whether any database modifications are applied immediately, or during the next maintenance window"
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}
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variable "rds_replica_skip_final_snapshot" {
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type = "string"
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default = "false"
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description = "If true (default), no snapshot will be made before deleting DB"
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}
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variable "rds_replica_backup_retention_period" {
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type = "string"
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default = "7"
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description = "Backup retention period in days. Must be > 0 to enable backups"
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}
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variable "rds_replica_backup_window" {
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type = "string"
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default = "22:00-03:00"
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description = "When AWS can perform DB snapshots, can't overlap with maintenance window"
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}
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locals {
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rds_replica_enabled = "${var.rds_replica_enabled == "true"}"
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}
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module "rds_replica" {
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source = "git::https://github.com/cloudposse/terraform-aws-rds-replica.git?ref=tags/0.1.0"
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enabled = "${var.rds_replica_enabled}"
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namespace = "${var.namespace}"
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stage = "${var.stage}"
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name = "${var.rds_replica_name}"
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kms_key_id = "${var.rds_replica_kms_key_id}"
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replicate_source_db = "${var.rds_replica_replicate_source_db}"
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dns_zone_id = "${local.zone_id}"
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host_name = "${var.rds_replica_name}"
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security_group_ids = ["${module.kops_metadata.nodes_security_group_id}"]
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database_port = "${var.rds_replica_port}"
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multi_az = "${var.rds_replica_multi_az}"
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storage_type = "${var.rds_replica_storage_type}"
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storage_encrypted = "${var.rds_replica_storage_encrypted}"
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instance_class = "${var.rds_replica_instance_type}"
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publicly_accessible = "false"
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subnet_ids = ["${module.subnets.private_subnet_ids}"]
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vpc_id = "${module.vpc.vpc_id}"
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snapshot_identifier = "${var.rds_replica_snapshot}"
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auto_minor_version_upgrade = "${var.rds_replica_auto_minor_version_upgrade}"
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allow_major_version_upgrade = "${var.rds_replica_allow_major_version_upgrade}"
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apply_immediately = "${var.rds_replica_apply_immediately}"
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skip_final_snapshot = "${var.rds_replica_skip_final_snapshot}"
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copy_tags_to_snapshot = "true"
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backup_retention_period = "${var.rds_replica_backup_retention_period}"
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backup_window = "${var.rds_replica_backup_window}"
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}
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resource "aws_ssm_parameter" "rds_replica_hostname" {
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count = "${local.rds_replica_enabled ? 1 : 0}"
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name = "${format(var.chamber_parameter_name, local.chamber_service, "rds_replica_hostname")}"
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value = "${module.rds_replica.hostname}"
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description = "RDS replica hostname"
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type = "String"
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overwrite = "true"
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}
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resource "aws_ssm_parameter" "rds_replica_port" {
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count = "${local.rds_replica_enabled ? 1 : 0}"
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name = "${format(var.chamber_parameter_name, local.chamber_service, "rds_replica_port")}"
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value = "${var.rds_replica_port}"
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description = "RDS replica port"
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type = "String"
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overwrite = "true"
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}
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output "rds_replica_instance_id" {
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value = "${module.rds_replica.instance_id}"
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description = "RDS replica ID of the instance"
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}
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output "rds_replica_instance_address" {
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value = "${module.rds_replica.instance_address}"
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description = "RDS replica address of the instance"
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}
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output "rds_replica_instance_endpoint" {
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value = "${module.rds_replica.instance_endpoint}"
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description = "RDS replica DNS Endpoint of the instance"
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}
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output "rds_replica_port" {
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value = "${local.rds_replica_enabled ? var.rds_replica_port : local.null}"
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description = "RDS replica port"
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}
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output "rds_replica_hostname" {
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value = "${module.rds_replica.hostname}"
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description = "RDS replica host name of the instance"
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}

‎aws/backing-services/rds.tf‎

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@@ -7,7 +7,7 @@ variable "rds_name" {
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variable "rds_enabled" {
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type = "string"
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default = "false"
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description = "Set to true to create rds instance"
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description = "Set to false to prevent the module from creating any resources"
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}
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# Don't use `root`
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description = "RDS DB engine version"
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}
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variable "rds_cluster_enabled" {
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type = "string"
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default = "true"
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description = "Set to false to prevent the module from creating any resources"
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}
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variable "rds_snapshot" {
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type = "string"
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default = ""
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variable "rds_storage_encrypted" {
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type = "string"
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default = "false"
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default = "true"
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description = "Set true to encrypt storage"
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}
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