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variables.tf
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variables.tf
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###################
# Required Inputs #
###################
variable "name" {
description = "Name of this resource"
}
variable "vpc_id" {
description = "The ID of the VPC we want to place this RDS in"
}
variable "subnet_ids" {
description = "The subnet(s) which this RDS will exist in, typically your public subnet ids"
type = "list"
}
###################
# Optional Inputs #
###################
variable "engine" {
description = "RDS Engine, can be mysql, mariadb, postgres" # later support aurora, mssql, oracle
default = "mysql"
}
# See: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.DBInstanceClass.html
variable "instance_type" {
description = "Instance type of RDS"
default = "db.t2.micro"
}
variable "allocated_storage" {
description = "The allocated storage to this database in GBs"
default = "10"
}
variable "is_live" {
description = "Is a live database, if true then this will be multi-az and have automated backups"
default = false
}
variable "tags" {
description = "A map of tags to add to all resources"
default = {}
}
variable "security_group_ids" {
description = "A list of extra security group ids to associate with this database"
type = "list"
default = []
}
###################
# Tertiary Inputs #
###################
# WARNING: Only specify this if you know what you're doing, aka, you have a specific version requirement for your db instance
variable "engine_version" {
description = "This will force-set the engine version. This does NOT need to be specified, it will be auto-detected"
default = ""
}
variable "maintenance_window" {
description = "The weekly window to perform maintenance in. Syntax: 'ddd:hh24:mi-ddd:hh24:mi' UTC eg: Sun:01:00-Sun:02:00"
default = "Sun:01:00-Sun:02:00"
}
variable "backup_window" {
description = "The daily window in which this database performs database snapshots, can't overlap with maintenance window"
default = "23:00-01:00"
}
# Note: Changes here may require an instance restart
variable "db_parameter" {
description = "These are engine-specific settings you can tweak. This can be used to turn on stuff like slow logs, if desired"
type = "list"
default = []
}
variable "restore_from_snapshot" {
description = "If restoring from a snapshot, specify the name of the snapshot here"
default = ""
}
#######################
# Generated Variables #
#######################
# TODO: Make this support Oracle and Microsoft SQL Server upon demand
# TODO: Maybe make this support aurora also? But aurora requires a different terraform resource (aws_rds_cluster) which we could optionally use via terraform count?
locals {
username = "odsuperadmin"
port_lookup = {
mysql = "3306"
mariadb = "3306"
postgres = "5432"
// aurora = "3306"
// aurora-mysql = "3306"
// aurora-postgresql = "5432"
}
port = "${lookup(local.port_lookup, var.engine)}"
# These are aws "defaults" recommended versions as of February 15, 2018
engine_version_lookup = {
mysql = "5.6.37"
mariadb = "10.1.26"
postgres = "9.6.5"
// aurora = "5.6.10a"
// aurora-mysql = "5.7.12"
// aurora-postgresql = "9.6.5"
}
engine_version = "${length(var.engine_version) > 0 ? var.engine_version : lookup(local.engine_version_lookup, var.engine)}"
# This string is used to create the parameter group
engine_family = "${var.engine}${element(split(".",local.engine_version),0)}.${element(split(".",local.engine_version),1)}"
# Currently unused, use if/when implementing Aurora support
is_aurora = "${contains(list("aurora", "aurora-mysql", "aurora-postgresql"), var.engine) ? true : false}"
}