Automate the creation of EC2 Instance with Terraform

TERRAFORM LAB 2

Please reference link for INSTALLING TERRAFORM ON YOUR LOCAL MACHINE before starting this lab.

Deploying AWS EC2 instances with Terraform is one of the easiest ways to build infrastructure as code, and automate the provisioning, deployment and maintenance of resources to EC2 as well as custom solutions. This lab will walk you through the basics of configuring a single instance using a simple configuration file and the Terraform provider.

Prerequisites:

AWS access and secret keys are required to provision resources on AWS cloud.

• Open Visual Code Studio then click on File > Preferences > Extensions then search and install Terraform extension

• 
  

• Login to AWS console, click on Username on top right corner and go to My Security Credentials

• Click on Access Keys and Create New Key

Step I: Open File Explorer, navigate to Desktop and create a folder terraform_workspace.

Step II: Once folder has been created, open Visual Code Studio and add folder to workspace

Step III: Create a new file main.tf and copy the below code in yellow color

provider "aws" {

        access_key = "ACCESS KEY"
        secret_key  = "SECRET KEY"
        region         = "us-east-2"

}

resource "aws_instance" "ec2" {

  ami           = "ami-0a91cd140a1fc148a"

  instance_type = "t2.micro"
  vpc_security_group_ids = [aws_security_group.ec2_sg.id]
  tags = {
    Name = "ec2_instance"
  }

}

Add the block below in main.tf to output the Private IP, Public IP and EC2 Name after creation. (Note: This is not required)

output "ec2_ip" {

    value = [aws_instance.ec2.*.private_ip]

}

output "ec2_ip_public" {

    value = [aws_instance.ec2.*.public_ip]

}

output "ec2_name" {

    value = [aws_instance.ec2.*.tags.Name]

}

Step IV: Create a new file security.tf and copy the below code in yellow color

resource "aws_security_group" "ec2_sg" {

name = "ec2-dev-sg"

description = "EC2 SG"

ingress {

from_port = 22

to_port = 22

protocol = "tcp"

cidr_blocks = ["10.0.0.0/8"]

}

  ingress {

from_port = 80

to_port = 80

protocol = "tcp"

cidr_blocks = ["10.0.0.0/8"]

}

#Allow all outbound

egress {

from_port = 0

to_port = 0

protocol = "-1"

cidr_blocks = ["0.0.0.0/0"]

}

tags = {
    Name = "ec2-dev-sg"
  }

}

Step V: Open Terminal in VSCode

Step V: Execute command below

terraform init

the above command will download the necessary plugins for AWS.

terraform plan

the above command will show how many resources will be added.

Plan: 2 to add, 0 to change, 0 to destroy.

Execute the below command

terraform apply

Plan: 2 to add, 0 to change, 0 to destroy.

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value: yes

Apply complete! Resources: 2 added, 0 changed, 0 destroyed.

Yay! 

We have successfully deployed our first ec2 instance with terraform............................

Now login to AWS console, to verify the new instance is up and running