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Use Output Variables to Query Data in AWS Using Terraform

Hey there, Gurus! Welcome to the lab! This lab will demonstrate the usefulness of output variables and how they can be used to collect useful data about resources in your infrastructure. In this lab, we will first deploy the lab environment, then we will add some output variables to output the instance name and its IP. Let's get started!

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Path Info

Clock icon Intermediate
Clock icon 30m
Clock icon Aug 27, 2021

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Table of Contents

  1. Challenge

    Set Up the Environment

    In the Terminal

    1. Once logged into your instance, change to the lab-aws-outputs directory.
    2. Copy your ami and your subnet_id from your resource_ids.txt file, then update the main configuration file.
    3. Initialize the working directory.
    4. Apply the Terraform configuration.
  2. Challenge

    Add Output Variables and Deploy Changes

    In the Terminal

    1. Create an file.
    2. Add this code:
    output "instance_name" {
      description = "The tag name for this instance"
      value       = var.instance_name
    output "instance_id" {
      description = "ID of the EC2 instance"
      value       =
    output "instance_public_ip" {
      description = "Public IP address of the EC2 instance"
      value       = aws_instance.app_server.public_ip
    1. Apply the configuration changes.
    2. Notice the output after the apply.
  3. Challenge

    Confirm the Changes

    In the Terminal

    1. Confirm the outputs are working.
    2. Inspect the state.
    3. Destroy your infrastructure.

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