850488-Prajna.tf.txt

variables.tf
variable aws_access_key{}
variable aws_secret_key{}
variable aws_region{
default="us-east-1"
}


#environment variables for access key and secret key
export TF_VAR_aws_access_key=" "
export TF_VAR_aws_secret_key=" "


provider.tf
provider "aws"{
access_key="${aws_access_key}"
secret_key="${aws_secret_key}"
region="${aws_region}"
}

data "aws_instance" "web"
{
instance_tags{
Role="web_server"
}
instance_state=["running". "stopped"]
}








resource "aws_vpc" "default" {
  cidr_block = " "
}

resource "aws_internet_gateway" "default" {
  vpc_id = " "
}



resource "aws_subnet" "default" {
  vpc_id                  = " "
  cidr_block              = " "
  
}

resource "aws_security_group" "elb" {
  name        = " "
  
  vpc_id      = " "

  ingress {
    from_port   = 80
    to_port     = 80
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }

  egress {
    from_port   = 0
    to_port     = 0
    protocol    = "-1"
    cidr_blocks = ["0.0.0.0/0"]
  }
}



resource "aws_elb" "web" {
  name = " "

  subnets         = ["${aws_subnet.default.id}"]
  security_groups = ["${aws_security_group.elb.id}"]
  instances       = ["${aws_instance.web.id}"]

  
}

#generate key pair 
ssh-keygen -t rsa -b 4096 -f aws_rsa


resource "aws_key_pair" "auth" {
  key_name   = "${var.env}-key"
  public_key = "/path/to/key"
}

resource "aws_instance" "web" {
  connection {
    user = "ec2"
    private_key = "${tls_private_key.two-tier.private_key_pem}"
  }

  instance_type = "t2.micro"
  ami = ""
  key_name = ""
  vpc_security_group_ids = ["${aws_security_group.default.id}"]
  subnet_id = "${aws_subnet.default.id}"
  
  
  provisioner "remote-exec" {
    inline = [
      install nginix
    ]
  }
}

resource "aws_default_subnet" "subnet_id"
{ 

}

#implicit dependency
subnet_id="${aws_default_subnet.subnet_id.id}

#to verify connection
ssh -i aws_rsa ec2user ip_address


terraform 
{
 backend "S3"
 {
  bucket="Bucket_name"
  key="path/to/key"
  region="us-east-1"
 }
} 

module "vpc"
{
 scource=" "
 name="vpc_module"
 cidr=" "
 private_subnet=[     ]
 public_subnet=[     ]
 enable_nat_gateway="true"
 enable_vpn_gateway='true"
}