AWS Deployment Automation Using Terraform and Ansible

Scenario:

You're tasked to deploy webpages in multiple EC2 instances and attach to a Load Balancer all set up using Terraform. Ansible would handle the instances configurations by working with the output from terraform. Terraform should also link the load balncer's domain to a sub-domain called terraform-test.yourdomain.com of your custom domain name, request and validate an ssl certifcate. Visiting terraform-test.yourdomain.me should display all instances webpages.

Essentials:

• An AWS Account.
• A linux/mac system or instance or virtual machine or droplets
• Be logged in an IAM user with Admin priviledges
• A custom domain name (sub-domain would be mapped)
• An S3 bucket to store the terraform state files remotely

Procedures:

I am currently writing a well detailed article with all research I did on this, note this link when it drops. Here is a summary of the steps.

• Install latest Terraform on the command line
• Install latest Ansible on th ecommand line
• Create a terraform folder (working directory), cd into it and code to open vs code
• Install the terraform extension by Anton Kulikov
• Install AWS CLI and Configure with aws configure
  • fill up outputs with credentials previously created from IAM user
  • add preferred region
  • Test configuration details with aws configure list
  • No need to create environment variables as env | grep AWS will not recognize the enviroment variables set in another terminal tab hence aws configure is appropriate for global setup.
• Create a variables.tf file to declare variables used in this project and a terraform.tfvars file to input the variable values.
• Create a s3_backend.tf file to store remote state files as this ensures multiples users or CI server gets the latest state data before running terraform. Its also more secure. Fill up

Final Output: visit secured terraform-test.wandexdev.me

Instance 1 Instance 2 instance 3

Screenshots:

• Remote Backend:

• Network:

  • VPC
  • SUBNETS
  • Custom-DEFAULT ROUTE TABLES
  • INTERNET GATEWAY (IGW)
  • SECURITY GROUPS (Instances and ALB)

• Servers:

  • Instances
  • KEY PAIR
  • APPLICATION LOAD BALANCERS (ALB)