From 75bbcd36c4ab3ae0ff052c2a6ec71246fe70f63e Mon Sep 17 00:00:00 2001
From: Steven Dickenson <sdickenson@rhythmictech.com>
Date: Mon, 4 Nov 2024 12:11:57 -0500
Subject: [PATCH] Add support for creating EBS volume from a snapshot

---
 main.tf      | 4 ++--
 variables.tf | 7 +++++++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/main.tf b/main.tf
index 963e967..f36b220 100644
--- a/main.tf
+++ b/main.tf
@@ -74,12 +74,12 @@ resource "aws_autoscaling_group" "this" {
   }
 }
 
-
 resource "aws_ebs_volume" "data" {
   count = var.ebs_data_volume ? 1 : 0
 
   availability_zone = var.availability_zone
-  size              = var.ebs_volume_size
+  size              = var.ebs_volume_snapshot_id == "" ? var.ebs_volume_size : null
+  snapshot_id       = var.ebs_volume_snapshot_id == "" ? null : var.ebs_volume_snapshot_id
 
   tags = merge(var.tags,
     {
diff --git a/variables.tf b/variables.tf
index ab7db5c..6d47fca 100644
--- a/variables.tf
+++ b/variables.tf
@@ -195,10 +195,17 @@ variable "ebs_data_volume" {
 }
 
 variable "ebs_volume_size" {
+  default     = 100
   description = "Size of Nexus data volume in GB"
   type        = number
 }
 
+variable "ebs_volume_snapshot_id" {
+  default     = ""
+  description = "Snapshot ID to use as source for new EBS volume"
+  type        = string
+}
+
 ########################################
 # EFS Vars
 ########################################