Terraform syntax - part 2

Author: sumeetninawe

main.tf

@@ -1,41 +1,31 @@
-terraform {
- required_providers {
- aws = {
- source = "hashicorp/aws"
- version = "~> 3.0"
- }
- }
-}
-
-provider "aws" {
- region = var.region
-}
+//Using for_each meta-argument
 
-variable "region" {
- default = "us-west-1"
- description = "AWS Region"
-}
+resource "aws_instance" "demo" {
+ for_each = {
+ fruit = "apple"
+ vehicle = "car"
+ continent = "Europe"
+ }
+ provider = aws.aws_west
+ ami = var.ami
+ instance_type = var.type
 
-variable "ami" {
- default = "ami-00831fc7c1e3ddc60"
- description = "Amazon Machine Image ID for Ubuntu Server 20.04"
+ tags = {
+  name = "${each.key}: ${each.value}"
+ }
 }
 
-variable "type" {
- default = "t2.micro"
- description = "Size of VM"
-}
+/*
+Using count meta-argument
 
 resource "aws_instance" "demo" {
- ami = var.ami
+ count = 3
+ provider = aws.aws_west
+ ami = var.ami
  instance_type = var.type
 
  tags = {
  name = "Demo System"
  }
 }
-
-output "instance_id" {
- value = aws_instance.demo.id
-}
-
+*/

provider.tf

@@ -0,0 +1,18 @@
+terraform {
+ required_providers {
+ aws = {
+ source = "hashicorp/aws"
+ version = "~> 3.0"
+ }
+ }
+}
+
+provider "aws" {
+ alias = "aws_west"
+ region = var.region_west
+}
+
+provider "aws" {
+ alias = "aws_east"
+ region = var.region_east
+}

variables.tf

@@ -0,0 +1,24 @@
+variable "region_west" {
+ default = "us-west-1"
+ description = "AWS West Region"
+}
+
+variable "region_east" {
+ default = "us-east-1"
+ description = "AWS East Region"
+}
+
+variable "ami" {
+ default = "ami-00831fc7c1e3ddc60"
+ description = "Amazon Machine Image ID for Ubuntu Server 20.04"
+}
+
+variable "type" {
+ default = "t2.micro"
+ description = "Size of VM"
+}
+
+output "instance_id" {
+ //value = aws_instance.demo[*].id
+ value = [for b in aws_instance.demo : b.id]
+}