“How can I define a Terraform data block for an S3 bucket that utilizes bucket_prefix?”

by
Terraform S3 Bucket with SSM Parameter Store

Using AWS SSM Parameter Store to Manage an S3 Bucket Name in Terraform

You can store the S3 bucket name in AWS Systems Manager (SSM) Parameter Store for better manageability and cost-effectiveness. Then, you can retrieve it in another module and use it in a Terraform data block.

Step 1: Store the Bucket Name in SSM Parameter Store


resource "aws_ssm_parameter" "bucket_prod" {
  name  = "/bucket-names/prod"
  type  = "String"
  value = var.bucket_name
}

Step 2: Retrieve the Bucket Name in Another Module


data "aws_ssm_parameter" "bucket_prod" {
  name = "/bucket-names/prod"
}

Step 3: Use the Retrieved Value in an S3 Bucket Data Block


data "aws_s3_bucket" "s3_bucket" {
  bucket = data.aws_ssm_parameter.bucket_prod.value
}

Why Use This Approach?

  • Centralized Bucket Name Management – Store and update bucket names in one place.
  • Cost-Effective – SSM Parameter Store is a cheaper option compared to Secrets Manager.
  • Secure & Modular – Avoids hardcoding bucket names directly in Terraform.

Leave a Comment