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Terraform Hands-on Project - Build Your Own AWS Infrastructure with Ease using Infrastructure as Code (IaC) Techniques(Interview Questions) ☁

Vrishni Shree V B's photo
Vrishni Shree V B
·

2 min read

  1. Create a main.tf file as shown below...

     terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
       version = "~> 5.0"
     }
   }
 }

 provider "aws" {
   region = "us-east-1"
 }

 resource "aws_vpc" "main" {
   cidr_block = "10.0.0.0/16"

   tags = {
     Name = "main"
   }
 }

 resource "aws_subnet" "public" {
   vpc_id            = aws_vpc.main.id
   cidr_block        = "10.0.16.0/20"
   availability_zone = "us-east-1a"

   tags = {
     Name = "public"
   }
 }

 resource "aws_subnet" "private" {
   vpc_id            = aws_vpc.main.id
   cidr_block        = "10.0.32.0/20"
   availability_zone = "us-east-1a"

   tags = {
     Name = "private"
   }
 }

 resource "aws_internet_gateway" "gw" {
   vpc_id = aws_vpc.main.id

   tags = {
     Name = "internet-gateway"
   }
 }

 resource "aws_route_table" "public" {
   vpc_id = aws_vpc.main.id

   route {
     cidr_block = "0.0.0.0/0"
     gateway_id = aws_internet_gateway.gw.id
   }

   tags = {
     Name = "public"
   }
 }

 resource "aws_route_table_association" "public_subnet_association" {
   subnet_id      = aws_subnet.public.id
   route_table_id = aws_route_table.public.id
 }

 resource "aws_security_group" "web_server" {
   name_prefix = "web-server-sg"
   vpc_id      = aws_vpc.main.id

   ingress {
     from_port   = 22
     to_port     = 22
     protocol    = "tcp"
     cidr_blocks = ["0.0.0.0/0"]
   }

   ingress {
     from_port   = 80
     to_port     = 80
     protocol    = "tcp"
     cidr_blocks = ["0.0.0.0/0"]
   }

   ingress {
     from_port   = 443
     to_port     = 443
     protocol    = "tcp"
     cidr_blocks = ["0.0.0.0/0"]
   }

   egress {
     from_port   = 0
     to_port     = 0
     protocol    = "-1"
     cidr_blocks = ["0.0.0.0/0"]
   }
 }

 resource "aws_eip" "eip" {
   instance = aws_instance.example.id

   tags = {
     Name = "test-eip"
   }
 }

 resource "aws_instance" "example" {
   ami           = "ami-053b0d53c279acc90"
   instance_type = "t2.micro"
   subnet_id     = aws_subnet.public.id

   associate_public_ip_address = true
   security_groups = [aws_security_group.web_server.id]

   tags = {
     Name = "Terraform-Infra"
   }

   user_data = <<-EOF
     #!/bin/bash
     sudo apt-get update -y
     sudo apt-get install apache2 -y
     sudo systemctl start apache2
     sudo systemctl enable apache2
     sudo systemctl restart apache2
     sudo chmod 766 /var/www/html/index.html
     sudo echo "<html><body><h1>Hare Krishna!<br>Welcome to my website.</h1></body></html>" >/var/www/html/index.html
   EOF
 }

  2. Run Terraform Commands:

    Open your terminal and navigate to the directory containing your Terraform configuration file. Run the following commands:

    • terraform init (to initialize your Terraform working directory)

    • terraform apply (to create the resources as defined in your configuration)

  3. You can then access your website by entering the public IP address in a web browser to verify that the website is hosted successfully.

Thank you so much for reading

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