Day 65 - Working with Terraform Resources 🚀

Yesterday, we delved into the basics of Terraform script creation with Blocks and Resources. Today, let's deepen our understanding of Terraform resources and unleash their potential.

Understanding Terraform Resources

In Terraform, a resource symbolizes a vital component of your infrastructure, be it a physical server, a virtual machine, a DNS record, or an S3 bucket. Each resource comes with attributes defining its properties and behaviors, such as the size and location of a virtual machine or the domain name of a DNS record. When defining a resource in Terraform, you specify its type, a unique name, and the attributes that characterize it, utilizing the resource block within your Terraform configuration.

Task 1: Creating a Security Group

To enable traffic to your EC2 instance, establishing a security group is essential. Here's how to do it:

In your main.tf file, insert the following code snippet to create a security group:

hclCopy coderesource "aws_security_group" "web_server" {
  name_prefix = "web-server-sg"

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

Run terraform init to initialize the Terraform project.
Run terraform apply to create the security group.

Task 2: Creating an EC2 Instance

Now, let's proceed to create an EC2 instance with Terraform:

In your main.tf file, add the following code snippet to define an EC2 instance:

hclCopy coderesource "aws_instance" "web_server" {
  ami           = "ami-0557a15b87f6559cf"
  instance_type = "t2.micro"
  key_name      = "my-key-pair"
  security_groups = [
    aws_security_group.web_server.name
  ]

  user_data = <<-EOF
              #!/bin/bash
              echo "<html><body><h1>Welcome to my website!</h1></body></html>" > index.html
              nohup python -m SimpleHTTPServer 80 &
              EOF
}

Replace the ami and key_name values with your own.
Run terraform apply to create the EC2 instance.

Task 3: Accessing Your Website

Now that your EC2 instance is up and running, you can access the website hosted on it:

Happy Terraforming! 🌐

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