Add terragrunt

.gitignore

@@ -16,6 +16,7 @@ crash.log
 
 # Ignore override files as they are usually used to override resources locally and so
 # are not checked in
+**/backend.tf
 override.tf
 override.tf.json
 *_override.tf
@@ -26,4 +27,4 @@ override.tf.json
 # !example_override.tf
 
 # Include tfplan files to ignore the plan output of command: terraform plan -out=tfplan
-# example: *tfplan*
+*tfplan*

backend/backend.tf → backend/default.tf

@@ -18,7 +18,7 @@ resource "aws_s3_bucket" "terraform" {
   }
 
   versioning {
-    enabled    = true
+    enabled = true
   }
 }
 

backend/main.tf

@@ -1,12 +1,4 @@
 terraform {
-  backend "s3" {
-    bucket = "terraform-nu2dp3915g"
-    key    = "backend/state.tf"
-    region = "eu-west-1"
-
-    dynamodb_table = "terraform"
-  }
-
   required_providers {
     aws = {
       source  = "hashicorp/aws"

backend/terragrunt.hcl

@@ -0,0 +1,3 @@
+include {
+  path = find_in_parent_folders()
+}

budget/budget.tf

@@ -35,7 +35,7 @@ resource "aws_sns_topic_subscription" "budget" {
 resource "aws_budgets_budget" "budget" {
   name              = "budget"
   budget_type       = "COST"
-  limit_amount      = "25"
+  limit_amount      = "25.0"
   limit_unit        = "USD"
   time_unit         = "MONTHLY"
   time_period_start = "2021-07-01_00:00"

budget/main.tf

@@ -1,10 +1,9 @@
 terraform {
-  backend "s3" {
-    bucket = "terraform-nu2dp3915g"
-    key    = "budget/state.tf"
-    region = "eu-west-1"
-
-    dynamodb_table = "terraform"
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "> 3.0"
+    }
   }
 }
 

budget/terragrunt.hcl

@@ -0,0 +1,3 @@
+include {
+  path = find_in_parent_folders()
+}

iam/main.tf

@@ -1,12 +1,4 @@
 terraform {
-  backend "s3" {
-    bucket = "terraform-nu2dp3915g"
-    key    = "iam/state.tf"
-    region = "eu-west-1"
-
-    dynamodb_table = "terraform"
-  }
-
   required_providers {
     aws = {
       source  = "hashicorp/aws"

iam/terragrunt.hcl

@@ -0,0 +1,3 @@
+include {
+  path = find_in_parent_folders()
+}

terragrunt.hcl

@@ -0,0 +1,16 @@
+remote_state {
+  backend = "s3"
+
+  config = {
+    bucket         = "terraform-nu2dp3915g"
+    dynamodb_table = "terraform"
+    encrypt        = true
+    key            = "${path_relative_to_include()}/state.tf"
+    region         = "eu-west-1"
+  }
+
+  generate = {
+    path      = "override.tf"
+    if_exists = "overwrite_terragrunt"
+  }
+}