TerraWeek Day 3

Terraform on AWS

1. Create AWS Instance Using Terraform

STEP 1: Create a Ubuntu Machine on AWS

Create a Ubuntu Machine and login to the Putty

sudo su
mkdir terraform
cd terraform

STEP 2: Create an IAM user and login

Users — Add users

Enter Username and Click Next

Attach Policies — AdministratorAccess

raj — Security credentials — Create access key

STEP 3: Login as IAM User and Create an ENV Variable

apt update
apt install awscli

aws configure
#paste accesskey 
#paste secretkey

export AWS_ACCESS_KEY_ID=<access_key>
export AWS_SECRET_ACCESS_KEY=<secret_key>

STEP 4: Install Terraform

Install Terraform on Ubuntu Machine by the steps provided by Terraform official website https://developer.hashicorp.com/terraform/tutorials/aws-get-started/install-cli

sudo apt-get update && sudo apt-get install -y gnupg software-properties-common

wget -O- https://apt.releases.hashicorp.com/gpg | \
gpg --dearmor | \
sudo tee /usr/share/keyrings/hashicorp-archive-keyring.gpg

gpg --no-default-keyring \
--keyring /usr/share/keyrings/hashicorp-archive-keyring.gpg \
--fingerprint

echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] \
https://apt.releases.hashicorp.com $(lsb_release -cs) main" | \
sudo tee /etc/apt/sources.list.d/hashicorp.list

sudo apt update
sudo apt-get install terraform

STEP 5: Create main.tf file on AWS.

vi main.tf

terraform {
  required_providers {
    aws = {
      source = "hashicorp/aws"
      version = "4.67.0"
    }
  }
}

provider "aws" {
  region = "ap-south-1"
}

resource "aws_instance" "web_server" {
  ami           = "ami-08e5424edfe926b43"
  instance_type = "t2.micro"
}

output "ec2_pubic_ips" {
    value = aws_instance.web_server.public_ip
}

terraform init
terraform validate

terraform plan
terraform apply

After apply command, new Instance will be created on aws

STEP 6: Configure the instance Resource by changing the code to create Multiple Instance.

vi main.tf

terraform {
  required_providers {
    aws = {
      source = "hashicorp/aws"
      version = "4.67.0"
    }
  }
}

provider "aws" {
  region = "ap-south-1"
}

resource "aws_instance" "web_server" {
    count = 2
    ami           = "ami-08e5424edfe926b43"
    instance_type = "t2.micro"
}

output "ec2_pubic_ips" {
    value = aws_instance.web_server[*].public_ip
}

terraform plan
terraform apply

terraform destroy
#to delete the created instance 

2. Lifecycle Management

mkdir lifecycle
cd lifecycle
vi main.tf

terraform {
  required_providers {
    aws = {
      source = "hashicorp/aws"
      version = "4.67.0"
    }
  }
}

provider "aws" {
  region = "ap-south-1"
}

resource "aws_instance" "terraform" {
  instance_type = "t2.micro"
  ami           = "ami-08e5424edfe926b43"
  
  tags = {
    Name = "Raj"
  }

  lifecycle {
    create_before_destroy = true
    prevent_destroy       = false

    ignore_changes = [
      instance_type,
      key_name,
      tags
    ]
  }
}

terraform init
terraform validate
terraform plan
terraform apply

Thank you shubhamlondhe , for the wonderful session

#devops #terraweek #terraform #hcl #aws

I’m actively searching for new opportunities and eager to broaden my professional network.

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