aws-key-pair-terrafrom.tf

### Option 1 - Terraform can generate SSL/SSH private keys using the tls_private_key resource

variable "key_name" {}

resource "tls_private_key" "example" {
  algorithm = "RSA"
  rsa_bits  = 4096
}

resource "aws_key_pair" "generated_key" {
  key_name   = "var.key_name"
  public_key = "${tls_private_key.example.public_key_openssh}"
}


resource "aws_instance" "web" {
  ami           = "ami-5b673c34"
  instance_type = "t2.micro"
  key_name      = "${aws_key_pair.generated_key.key_name}"

  tags = {
    Name = "HelloWorld"
  }
}

###  Option 2 - Retrieving the Public Key for Your Key Pair on Linux and use with aws_key_pair using

chmod 400 my-key-pair.pem
ssh-keygen -y -f /path_to_key_pair/my-key-pair.pem >> terraform_ec2_key.pub

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

resource "aws_key_pair" "terraform-demo" {
  key_name   = "terraform-demo"
  public_key = "file(terraform_ec2_key.pub)"
}