Merge pull request #2396 from sathiyas/ex-add-aws-eip

AWS Terraform Example for eip

examples/aws-eip/README.md

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+# Elastic IP Example
+
+The eip example launches a web server, installs nginx. It also creates security group 
+
+To run, configure your AWS provider as described in https://www.terraform.io/docs/providers/aws/index.html
+
+Running the example
+
+run `terraform apply -var 'key_name={your_key_name}}'` 
+
+Give couple of mins for userdata to insatll nginx, and then type the Elastic IP from outputs in your browser and see the nginx welcome page

examples/aws-eip/main.tf

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+# Specify the provider and access details
+provider "aws" {
+    region = "${var.aws_region}"
+}
+
+resource "aws_eip" "default" {
+    instance = "${aws_instance.web.id}"
+    vpc = true
+}
+
+# Our default security group to access
+# the instances over SSH and HTTP
+resource "aws_security_group" "default" {
+    name = "eip_example"
+    description = "Used in the terraform"
+
+    # SSH access from anywhere
+    ingress {
+        from_port = 22
+        to_port = 22
+        protocol = "tcp"
+        cidr_blocks = ["0.0.0.0/0"]
+    }
+
+    # HTTP access from anywhere
+    ingress {
+        from_port = 80
+        to_port = 80
+        protocol = "tcp"
+        cidr_blocks = ["0.0.0.0/0"]
+    }
+
+    # outbound internet access
+    egress {
+        from_port = 0
+        to_port = 0
+        protocol = "-1"
+        cidr_blocks = ["0.0.0.0/0"]
+    }
+}
+
+
+resource "aws_instance" "web" {
+  instance_type = "t2.micro"
+
+  # Lookup the correct AMI based on the region
+  # we specified
+  ami = "${lookup(var.aws_amis, var.aws_region)}"
+
+  # The name of our SSH keypair you've created and downloaded
+  # from the AWS console.
+  #
+  # https://console.aws.amazon.com/ec2/v2/home?region=us-west-2#KeyPairs:
+  #
+  key_name = "${var.key_name}"
+
+  # Our Security group to allow HTTP and SSH access
+  security_groups = ["${aws_security_group.default.name}"]
+
+  # We run a remote provisioner on the instance after creating it.
+  # In this case, we just install nginx and start it. By default,
+  # this should be on port 80
+  user_data = "${file("userdata.sh")}"
+  #Instance tags
+    tags {
+        Name = "eip-example"
+    }
+}
+

examples/aws-eip/outputs.tf

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+output "address" {
+  value = "${aws_instance.web.private_ip}"
+}
+output "elastic ip" {
+  value = "${aws_eip.default.public_ip}"
+}

examples/aws-eip/userdata.sh

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+#!/bin/bash -v
+apt-get update -y
+apt-get install -y nginx > /tmp/nginx.log
+

examples/aws-eip/variables.tf

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+variable "aws_region" {
+    description = "The AWS region to create things in."
+    default = "us-east-1"
+}
+
+# ubuntu-trusty-14.04 (x64)
+variable "aws_amis" {
+    default = {
+        "us-east-1" = "ami-5f709f34"
+        "us-west-2" = "ami-7f675e4f"
+    }
+}
+
+variable "key_name" {
+    description = "Name of the SSH keypair to use in AWS."
+}
+