s3

Terraform Remote State example

This folder contains an example of a Terraform file Terraform that create a S3 bucket that can be used for remote state storage.

This Terraform file deploys the creation a of a bucket on AWS (Amazon Web Services) using S3.

Requirements

• You must have Terraform installed on your computer.
• You must have an AWS (Amazon Web Services) account.
• It uses the Terraform AWS Provider that interacts with the many resources supported by AWS through its APIs.
• This code was written for Terraform 0.10.x.

Using the code

• Configure your AWS access keys.

• Initialize working directory.

  The first command that should be run after writing a new Terraform configuration is the terraform init command in order to initialize a working directory containing Terraform configuration files. It is safe to run this command multiple times.

  terraform init

• Modify configuration.

  You must modify the S3 bucket name, which is defined as an input variable bucket_name in vars.tf file.

  You can modify the S3 bucket name in several ways:

  • Loading variables from command line flags.

    Run Terraform commands in this way:

    terraform plan -var 'bucket_name=<YOUR_BUCKET_NAME>'

    terraform apply -var 'bucket_name=<YOUR_BUCKET_NAME>'

  • Loading variables from a file.

    When Terraform runs it will look for a file called terraform.tfvars. You can populate this file with variable values that will be loaded when Terraform runs. An example for the content of the terraform.tfvars file:

    bucket_name = "<YOUR_BUCKET_NAME>"

  • Loading variables from environment variables.

    Terraform will also parse any environment variables that are prefixed with TF_VAR. You can create an environment variable TF_VAR_bucket_name:

    TF_VAR_bucket_name=<YOUR_BUCKET_NAME>

  • Variable defaults.

    Change the value of the default attribute of bucket_name input variable in vars.tf file.

    variable "bucket_name" {
      description = "The name of the S3 bucket. Must be globally unique."
      default = "<YOUR_BUCKET_NAME>"
    }

• Validate the changes.

  Run command:

  terraform plan

• Deploy the changes.

  Run command:

  terraform apply

• Clean up the resources created.

  When you have finished, run command:

  terraform destroy