From 401d2f1bb9fb81901f076884d8851b5a7364d9b7 Mon Sep 17 00:00:00 2001
From: Nacho Valera <nacho@cyber-duck.co.uk>
Date: Mon, 3 Apr 2023 12:19:51 +0100
Subject: [PATCH] Support multiple EBS volume types & set default to
 less-expensive gp3. PR #77

---
 main.tf      |  1 +
 variables.tf | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/main.tf b/main.tf
index 02599aa..f16e9c8 100644
--- a/main.tf
+++ b/main.tf
@@ -84,6 +84,7 @@ resource "aws_instance" "default" {
     content {
       encrypted             = var.ebs_block_device_encrypted
       volume_size           = var.ebs_block_device_volume_size
+      volume_type           = var.root_block_device_volume_type
       delete_on_termination = var.ebs_delete_on_termination
       device_name           = var.ebs_device_name
     }
diff --git a/variables.tf b/variables.tf
index ae614c2..6521ad4 100644
--- a/variables.tf
+++ b/variables.tf
@@ -56,6 +56,16 @@ variable "root_block_device_volume_size" {
   description = "The volume size (in GiB) to provision for the root block device. It cannot be smaller than the AMI it refers to."
 }
 
+variable "root_block_device_volume_type" {
+  type        = string
+  default     = "gp3"
+  description = "The volume type for the EBS root volume"
+  validation {
+    condition = contains(["standard", "gp2", "gp3", "io1", "io2", "sc1", "st1"], var.root_block_device_volume_type)
+    error_message = "The root volume must specify a supported EBS type"
+  }
+}
+
 variable "disable_api_termination" {
   type        = bool
   description = "Enable EC2 Instance Termination Protection"