Configure Terraform remote state

Author: acs

.gitignore

@@ -132,3 +132,4 @@ dmypy.json
 
 .terraform
 *terraform.tfstate*
+*terraform.lock*

terraform/remote_state/main.tf

@@ -0,0 +1,35 @@
+provider "aws" {
+  region = "eu-west-1"
+}
+
+resource "aws_s3_bucket" "terraform_state" {
+  bucket = "devops-urjc-state"
+
+  # Prevent accidental deletion of this S3 bucket
+  lifecycle {
+    prevent_destroy = true
+  }
+
+  versioning {
+    enabled = true
+  }
+
+  server_side_encryption_configuration {
+    rule {
+      apply_server_side_encryption_by_default {
+        sse_algorithm = "AES256"
+      }
+    }
+  }
+}
+
+resource "aws_dynamodb_table" "terraform_locks" {
+  name     = "devops-urjc-locks"
+  hash_key = "LockID"
+  billing_mode = "PAY_PER_REQUEST"
+
+  attribute {
+    name = "LockID"
+    type = "S"
+  }
+}

terraform/remote_state/outputs.tf

@@ -0,0 +1,4 @@
+output "s3_bucket_arn" {
+  value = aws_s3_bucket.terraform_state.arn
+  description = "The ARN of the S3 bucket"
+}

terraform/terraform_aws/main.tf

@@ -2,6 +2,17 @@ provider "aws" {
   region = "eu-west-1"
 }
 
+terraform {
+  backend "s3" {
+    bucket  = "devops-urjc-state"
+    key     = "terraform/devops-swarm-state/terraform.tfstate"
+    region = "eu-west-1"
+
+    dynamodb_table = "devops-urjc-locks"
+    encrypt = true
+  }
+}
+
 resource "aws_instance" "swarm_node" {
   count=var.cluster_size
   # Ubuntu Server 20.04 LTS (HVM), SSD Volume Type