FEAT: added spot instance support to ec2 module

modules/compute/ec2_default_tags/main.tf

@@ -27,9 +27,24 @@ resource "aws_instance" "ec2-instance" {
     }
   }
 
+  # spot instance option
+  dynamic "instance_market_options" {
+    for_each = var.spot-max-price > 0 ? { use_spot : true } : {}
+    content {
+      market_type = "spot"
+
+      dynamic "spot_options" {
+        for_each = { use_spot : true }
+        content {
+          max_price = var.spot-max-price
+        }
+      }
+    }
+  }
+
   disable_api_termination = var.enable-termination-protection
-  user_data = var.user-data
-  monitoring = var.enable-detail-monitoring
+  user_data               = var.user-data
+  monitoring              = var.enable-detail-monitoring
 
   tags        = merge(var.additional-tags, { "Name" : var.instance-name })
   volume_tags = merge({ "Name" : var.instance-name }, data.aws_default_tags.this.tags)

modules/compute/ec2_default_tags/provider.tf

@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = "~> 5.0.0"
+      version = "~> 5.34.0"
     }
   }
 }

modules/compute/ec2_default_tags/variable.tf

@@ -50,4 +50,10 @@ variable "user-data" {
 variable "enable-detail-monitoring" {
   type    = bool
   default = false
+}
+
+variable spot-max-price {
+  type = number
+  default = 0
+  description = "Specify max price for spot instance."
 }