Mayank_Singh_Rawat-849363.tf.txt

/* Aim: Create a template for running a simple two-tier architecture on Amazon Web services. 
The premise is that you have stateless app servers running behind an ELB serving traffic. */
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#provider.tf

provider "aws"{
	access_key="${var.access_key}"
	secret_key="${var.secret_key}"
	region="${var.region}"
}

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#resource.tf
    
resource "aws_elb" "my-elb" {
  name = "my-elb"
  instances = ["${instance_1}", "${instance_2}"]
  security_groups = ["${aws_security_group.elb-securitygroup.id}"]
 listener {
    instance_port = 80
    instance_protocol = "http"
    lb_port = 80
    lb_protocol = "http"
  }

}

resource "aws_key_pair" "aws_key"{
	key_name="${var.key_pair_name}"
	public_key="${file("${var.key_pair_path}")}"
}

#run the below command to generate a key-pair

$ssh-keygen -t rsa -b 4096 -f aws_rsa_keyfile


resource "aws_instance" "myec2_server" {
	ami="${var.ami}"
	instance_type="${var.instancetype}"
	key_name = "${aws_key_pair.aws_key.my_name}"
	aws_security_group="myec2_server_securitygroup"
	count=2;
	
}

resource "aws_security_group" "myec2_server_securitygroup" {
 	name = "web server security group"
 	
	ingress {
 		from_port = 0
 		to_port = 80
 		protocol = "http"
 		cidr_blocks = ["0.0.0.0/0"]
 		}
 	egress {
 		from_port = 0
 		to_port = 0
 		protocol = "-1"
 		cidr_blocks = ["0.0.0.0/0"]
 		}
} 
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#provisioner.tf


provisioner "remote-exec"{
 	connection{
		type="ssh"
		user="ec2-user"
		private_key="${file("/path_to/aws_rsa_keyfile)}"
		}
}

provisioner "remote-exec"{
	inline{
			#commands
	"sudo yum -y update"
	"sudo yum install -y httpd",
	"sudo service httpd start"
			
		}
}

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#Defining the variables
#variables.tf



variable "my_map"{
	type="map"
	default{
		"ami"="machine image you want to create"
		"instance_type"="t2.micro or any other type"
		"key_pair_name"="my_key_pair"
		"key_pair_path"="my_key_pair_path"
		"access_key"="xxx"
		"secret_key"="xxx"
		"region"="us-east-1"
		}
	description=" variables to be used"
}