Building Highly Available Multi Tier Architecture with Terraform

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Building Highly Available Multi Tier Architecture with Terraform

In this lab, you will learn how to build a highly available multi-tier architecture on AWS using Terraform. This lab will guide you through creating a multi-tier VPC network, deploying EC2 instances in a private subnet, setting up an Application Load Balancer, and integrating with a backend database. By leveraging Terraform’s infrastructure-as-code capabilities, you can define each component of the architecture in a structured and repeatable manner. By the end of this lab, you will understand how to create and manage a scalable and fault-tolerant environment using best practices. This approach ensures that your infrastructure is optimized for high availability and reliability, making it ideal for production-level workloads and applications.

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Lab Info

Level

Intermediate

Last updated

Sep 23, 2025

Duration

45m

Challenge

Log into your virtual machine and create user
1. Use the provided credentials to connect to your virtual machine, use "cloud_user" as your username and replace "your_vm_public_ip_address" with the correct IP address.
2. Open your browser in incognito mode and navigate to the identity and access management section.
3. Go to "User Management," start creating a new user, and select "Attach policies directly" to give full admin access.
4. Complete user creation and generate access and secret keys under security credentials.
Challenge

Install Git and clone repository
1. Update your package list.
2. Install Git and confirm the installation using sudo yum install git -y.
3. Clone the repository and navigate into it. https://github.com/pluralsight-cloud/multi-tier-terraform.git
Challenge

Run the Install Script and use AWS configure
1. Ensure the script has executable permissions by using chmod +x "your script name"
2. Run the script to install required packages.
3. Install Git LFS.
4. Configure the AWS CLI with the previously created user's credentials, entering the Access Key ID, Secret Access Key, region, and output format when prompted.
Challenge

Initialize, Plan and Apply the Terraform code
1. Navigate to the folder with your main configuration file and run the command to initialize Terraform.
2. Use the command to preview planned changes.
3. Run the command to apply changes and create resources as defined in main.tf, confirming with "yes" when prompted.
Challenge

Verify Resource Creation
1. Once the terraform apply command completes, verify that the resources have been successfully created in your AWS Console.

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