This content originally appeared on DEV Community and was authored by Chibuzo Nwobia
To deploy a basic web server on AWS using Terraform follow the steps below:
Step 1: Install Terraform and AWS CLI
Ensure Terraform and AWS CLI are installed on your system and configured with your AWS credentials. If not, you can install and configure them using these commands:
- Install Terraform:
sudo apt-get update && sudo apt-get install -y gnupg software-properties-common curl
curl -fsSL https://apt.releases.hashicorp.com/gpg | sudo apt-key add -
sudo apt-add-repository "deb [arch=amd64] https://apt.releases.hashicorp.com $(lsb_release -cs) main"
sudo apt-get update && sudo apt-get install terraform
- Install AWS CLI:
sudo apt-get install awscli
aws configure
Step 2: Create the Terraform Configuration
Create a directory for your Terraform configuration files and navigate to it:
mkdir terraform-web-server
cd terraform-web-server
Now, create a main.tf file with the following content:
# Specify the AWS provider
provider "aws" {
region = "us-east-1" # Replace with your desired region
}
# Create a Security Group to allow HTTP and SSH access
resource "aws_security_group" "web_sg" {
name = "web-sg"
description = "Allow HTTP and SSH inbound traffic"
ingress {
from_port = 80
to_port = 80
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"]
}
ingress {
from_port = 22
to_port = 22
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"]
}
}
# Create an EC2 instance
variable "key_pair_name" {
description = "The name of the key pair to use fr the EC2 insance"
type = string
}
resource "aws_instance" "web_server" {
ami = "ami-066784287e358dad1"
instance_type = "t2.micro"
key_name = var.key_pair_name # Replace with your key pair
# Use the security group
vpc_security_group_ids = [aws_security_group.web_sg.id]
# User data to install a basic web server
user_data = <<-EOF
#!/bin/bash
sudo yum update -y
sudo yum install -y httpd
sudo systemctl start httpd
sudo systemctl enable httpd
echo "Hello, Chibuzo's demo page!" > /var/www/html/index.html
EOF
tags = {
Name = "Terraform-Web-Server"
}
}
# Output the public IP of the instance
output "instance_public_ip" {
value = aws_instance.web_server.public_ip
}
Step 3: Initialize Terraform
Run the following command to initialize your Terraform working directory:
terraform init
Step 4: Apply the Terraform Configuration
Run the following command to create the resources defined in your configuration:
terraform apply --auto-approve
--auto-approve automatically approves the applied configuration hence reducing the need to make a user input.
Step 5: Access the Web Server
Once the deployment is complete, Terraform will output the public IP of the EC2 instance.
You can access the web server by visiting http://<instance_public_ip> in your web browser. You should see a message saying "Hello, Chibuzo's demo page!".
Step 6: Clean Up Resources
When you're done, you can destroy the resources created by Terraform using the following command:
terraform destroy --auto-approve
Terraform will now remove all the resources it created.
If in the process of trying to create an instance, you do not have a valid key-pair, you can create one using the following commands:
How to Create a Key Pair
- Via AWS CLI: You can also create a key pair using the AWS CLI:
aws ec2 create-key-pair --key-name my-key-pair --query 'KeyMaterial' --output text > my-key-pair.pem
This will create a key pair named my-key-pair and save the private key to a file named my-key-pair.pem.
Make sure the private key file (my-key-pair.pem) is accessible and has the correct permissions (e.g., chmod 400 my-key-pair.pem) for SSH access.
This content originally appeared on DEV Community and was authored by Chibuzo Nwobia
Chibuzo Nwobia | Sciencx (2024-08-21T15:30:32+00:00) Using Terraform to deploy a basic web server on AWS. Retrieved from https://www.scien.cx/2024/08/21/using-terraform-to-deploy-a-basic-web-server-on-aws/
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