Using Terraform with LocalStack

Somebody who likes to code

Running LocalStack

Create a docker-compose.yml file with the following content:

version: "3.8" services: localstack: container_name: "my-localstack" image: localstack/localstack ports: - "127.0.0.1:4566:4566" - "127.0.0.1:4510-4559:4510-4559" environment: - DEBUG=1 - DOCKER_HOST=unix:///var/run/docker.sock volumes: - ".volume/tmp/localstack:/tmp/localstack" - "/var/run/docker.sock:/var/run/docker.sock"

Run docker-compose up. To verify the availability of all services, navigate to http://localhost:4566/health in a web browser.

Terraform Script

Create a main.tf file as follows:

terraform { required_providers { aws = { source = "hashicorp/aws" version = "4.22.0" } } } provider "aws"{ region = "us-east-1" access_key = "mock_access_key" secret_key = "mock_secret_key" s3_use_path_style = true skip_credentials_validation = true skip_metadata_api_check = true skip_requesting_account_id = true endpoints { s3 = "http://localhost:4566" } } resource "aws_s3_bucket" "my-bucket" { bucket = "my-bucket" }

The arguments region, access_key, and secret_key are mock credentials. Let's discuss the other arguments:

skip_credentials_validation: Whether to skip credentials validation via the STS API.

skip_metadata_api_check: Whether to skip the AWS Metadata API check.

skip_requesting_account_id: Whether to skip requesting the account ID.

s3_use_path_style: Whether to enable the request to use path-style addressing, i.e., https://s3.amazonaws.com/BUCKET/KEY

endpoints: Configuration block for customizing service endpoints. In our case, we are only using s3, but we might need to set up the rest of the services.

Run the following commands:

terraform init terraform plan -out app.tfplan terraform apply 'app.tfplan'

And that’s it. Run aws s3 ls --endpoint-url=http://localhost:4566 to see the list of buckets. Using Terraform with LocalStack enables us to accelerate Infrastructure as Code (IaC) development, identify errors sooner, and eliminate expenses during testing. Thank you, and happy coding!

Using Terraform with LocalStack

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Pre-requisites

Running LocalStack

Terraform Script

Command Palette

Comments

More from this blog

Pre-requisites

Running LocalStack

Terraform Script