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README.md

Terraform HTTP Example

This folder contains a simple Terraform module that deploys resources in AWS to demonstrate how you can use Terratest to write automated tests for your AWS Terraform code. This module deploys an EC2 Instance in the AWS region specified in the aws_region variable. The EC2 Instance runs a simple web server that listens for HTTP requests on the port specified by the instance_port variable and returns the text specified by the instance_text variable.

Check out test/terraform_http_example_test.go to see how you can write automated tests for this module.

Note that the example in this module is still fairly simplified, as the "web server" we run just servers up a static index.html, and not in a particularly production-ready manner! For a more complicated, real-world, end-to-end example of a Terraform module and web server, see terraform-packer-example.

WARNING: This module and the automated tests for it deploy real resources into your AWS account which can cost you money. The resources are all part of the AWS Free Tier, so if you haven't used that up, it should be free, but you are completely responsible for all AWS charges.

Running this module manually

  1. Sign up for AWS.
  2. Configure your AWS credentials using one of the supported methods for AWS CLI tools, such as setting the AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment variables. If you're using the ~/.aws/config file for profiles then export AWS_SDK_LOAD_CONFIG as "True".
  3. Install Terraform and make sure it's on your PATH.
  4. Run terraform init.
  5. Run terraform apply.
  6. The instance_url output variable shows you the URL of the web server. Try opening it in your browser!
  7. When you're done, run terraform destroy.

Running automated tests against this module

  1. Sign up for AWS.
  2. Configure your AWS credentials using one of the supported methods for AWS CLI tools, such as setting the AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment variables. If you're using the ~/.aws/config file for profiles then export AWS_SDK_LOAD_CONFIG as "True".
  3. Install Terraform and make sure it's on your PATH.
  4. Install Golang and make sure this code is checked out into your GOPATH.
  5. cd test
  6. dep ensure
  7. go test -v -run TestTerraformHttpExample