Terraform code creating EC2 instance with keypair

ec2_instance

project_directory/ 

├──provider.tf
├── main.tf
  ├── Modules
      ├── Key_pair/
          └── main.tf
      ├── ec2/
          └── main.tf
          └── variables.tf
          └── Output.tf
        
 --------------------------------------------------------------------------------------------------------------------------------------

 provider.tf:

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

provider "aws" {
  region = "us-east-2"  
  access_key: "**********"
  Secret_access_key: "*********"
}


main.tf:

module "instance" {
  source        = "./modules/ec2"
  instance      = "ami-09040d770ffe2224f"
  instance_type = "t2.micro"
  key_name = module.key_pair.key_name
}

module "key_pair" {
  source = "./modules/key_pair"
}


modules/ec2/main.tf:

resource "aws_instance" "example" {
  ami = var.instance
  instance_type = var.instance_type
  key_name = var.key_name
  security_groups = ["default"]
  tags = {
    Name = "my-server"
  }
}

modules/ec2/output.tf:

output "instance_id" {
  description = "The ID of the EC2 instance"
  value       = aws_instance.example.id
}

modules/ec2/variable.tf:

variable "instance" {
  description = "this is the value of the instance"
}

variable "instance_type" {
  description = "this is the value of the instance type"
}

variable "key_name" {
  description = "key pair name"
}


modules/key_pair/main.tf:

resource "tls_private_key" "rsa-4096-key" {
  algorithm = "RSA"
  rsa_bits  = 4096
}

resource "aws_key_pair" "demo-key_pair" {
  key_name   = "my-key"
  public_key = tls_private_key.rsa-4096-key.public_key_openssh
}

resource "local_file" "private_key" {
  content  = tls_private_key.rsa-4096-key.private_key_pem
  filename = "my-key.pem"
}

output "key_name" {
  value = aws_key_pair.demo-key_pair.key_name
}


terraform init
terraform fmt
terraform plan
terraform apply 

to take ssh of created instance on third party terminal:

(save .pem on your local system)
ssh -i <.pem key> ubuntu@<ip of instance>

terraform destroy