added terraform variable files and modified main source file

Author: easyawslearn

Aws-instance-example.tf

@@ -1,16 +1,11 @@
-provider "aws"{
- region     = "us-east-1"
- access_key = "AKIASGHX7SHCBQNPCDUB"
- secret_key = "apmH6dOPA1GR7t9/5QQlyhZ6vdI6MFP6FjpEcJ2L"
- version = "~> 2.0"
-
+provider "aws" {
+  region     = "${var.region}"
+  access_key = "${var.access_key}"
+  secret_key = "${var.secret_key}"
+  version    = "~> 2.0"
 }
 
-resource "aws_instance" "web" {
-  ami           = "ami-0ad82a384c06c911e"
+resource "aws_instance" "web1" {
+  ami           = "${lookup(var.ami_id, var.region)}"
   instance_type = "t2.micro"
-
-  tags = {
-    Name = "HelloWorld"
-  }
 }

variables.tf

@@ -0,0 +1,14 @@
+variable "access_key" { }
+variable "secret_key" { }
+variable "region" {
+default="us-east-1"
+}
+
+variable "ami_id" {
+type = "map"
+default = {
+us-east-1 = "ami-035b3c7efe6d061d5"
+eu-west-2= "ami-132b3c7efe6sdfdsfd"
+eu-central-1="ami-9787h5h6nsn"
+}
+}