Terraform Series - SSH Passwordless Login

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In today's post will see how to set up passwordless login for an EC2 instance via terraform.

First Method, I created a key pair called "ec2key" and I downloaded the private key.




I am going to create an EC2 instance using aws_instance resource and refer to the imported key as key_name = "ec2key"

# Terraform Block
terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
    }
  }
}
# Provider Block
provider "aws" {
  profile = "default" # AWS Credentials configured via AWS CLI.
  region  = "us-east-1"
}

# Resource Block
resource "aws_instance" "ec2demo" {
  ami           = "ami-0b5eea76982371e91" # Amazon Linux in us-east-1
  instance_type = "t2.micro"
  subnet_id = "subnet-0cfdbb9ad42fcf3c9"
  security_groups = ["sg-0495b116a9de10f0c"]
  key_name = "ec2key"
  tags = {
    "Name" = "webserver1"
  }
}

Second Method, I generated key pair using openssl client and using "Resource: aws_key_pair" to copy the public key to EC2 instance.

# Terraform Block
terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
    }
  }
}
# Provider Block
provider "aws" {
  profile = "default" # AWS Credentials configured via AWS CLI.
  region  = "us-east-1"
}

# Resource Block
resource "aws_instance" "ec2demo" {
  ami           = "ami-0b5eea76982371e91" # Amazon Linux in us-east-1
  instance_type = "t2.micro"
  subnet_id = "subnet-0cfdbb9ad42fcf3c9"
  security_groups = ["sg-0495b116a9de10f0c"]
  tags = {
    "Name" = "webserver1"
  }
}

resource "aws_key_pair" "ec2key" {
    key_name = "ec2_ssh_key"
    public_key = file("aws_public")
 
}







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