https://github.com/kelomo2502/terraform-ec2instane-ami-creation

This demonstrates the use Terraform to automate the creation of an EC2 instance on AWS and then create an Amazon Machine Image (AMI) from that instance.
https://github.com/kelomo2502/terraform-ec2instane-ami-creation

aws hcl terraform

Last synced: 2 months ago
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This demonstrates the use Terraform to automate the creation of an EC2 instance on AWS and then create an Amazon Machine Image (AMI) from that instance.

• Host: GitHub
• URL: https://github.com/kelomo2502/terraform-ec2instane-ami-creation
• Owner: kelomo2502
• Created: 2025-01-25T07:31:55.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2025-01-29T18:50:51.000Z (over 1 year ago)
• Last Synced: 2025-02-08T19:38:48.132Z (over 1 year ago)
• Topics: aws, hcl, terraform
• Language: HCL
• Homepage:
• Size: 49.8 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
Terraform EC2 Instance & AMI Creation

Purpose

This project demonstrates the use of Terraform to automate the launch of an EC2 instance on AWS, including key pair generation and the execution of a user data script to install and configure Apache HTTP server.

Objectives

Terraform Configuration: Write Terraform code to launch an EC2 instance.

Keypair Generation: Generate a key pair using aws tls_private_key.

User Data Execution: Execute user data to install Apache HTTP server.

Getting Started

Prerequisites

Terraform installed

AWS account with proper permissions

AWS CLI configured

Files Overview

main.tf: Terraform configuration for EC2 instance, key pair, and user data.

variables.tf: Variables for instance type, availability zone, etc.

Code Snippets

Key Pair Generation

resource "tls_private_key" "key_pair" {

  algorithm = "RSA"

  rsa_bits  = 2048

}

resource "aws_key_pair" "gb_key" {

  key_name   = "gb_key"

  public_key = tls_private_key.key_pair.public_key_openssh

}

resource "local_file" "private_key" {

  filename = "gb_key.pem"

  content  = tls_private_key.key_pair.private_key_pem

  provisioner "local-exec" {

    command = "chmod 400 gb_key.pem"

  }

}

resource "local_file" "public_key" {

  filename = "gb_key.pem"

  content  = tls_private_key.key_pair.public_key_pem

  provisioner "local-exec" {

    command = "chmod 400 gb_key.pem"

  }

}

EC2 Instance with Apache HTTP Setup

resource "aws_instance" "web" {

  ami                    = data.aws_ami.amazon_linux.id

  instance_type          = var.instance_type

  key_name               = aws_key_pair.gb_key.key_name

  vpc_security_group_ids = [aws_security_group.gb_sg.id]

  availability_zone      = var.availability_zone

  count                  = var.number_of_instances

  tags = {

    Name = var.ec2_instance_name

  }

  user_data = <<-EOF

                #!/bin/bash

                yum update -y

                yum install -y httpd

                systemctl start httpd

                systemctl enable httpd

                echo "
Hello World from $(hostname -f)
" > /var/www/html/index.html

                EOF

}


output "instance_public_ip_addr" {

  value = [for instance in aws_instance.web : instance.public_ip]

}

Steps to Deploy

Clone the repository.

Run terraform init to initialize the Terraform configuration.

Apply the configuration with terraform apply.

Access the Apache HTTP server using the EC2 instance's public IP.

Conclusion

This project demonstrates the automation of launching EC2 instances with Terraform, including key pair management and configuring Apache HTTP server using a user data script.