├── .gitignore
├── data.tf
├── internet_gw.tf
├── main.tf
├── nat.tf
├── routetable-private.tf
├── routetable.tf
├── subnets.tf
├── variables.tf
└── vpc.tf


/.gitignore:
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1 | .terraform
2 | .env
3 | plan


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/data.tf:
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1 | data "aws_availability_zones" "available" {}


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/internet_gw.tf:
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1 | resource "aws_internet_gateway" "gw" {
2 |   vpc_id = aws_vpc.main.id
3 | 
4 |   tags = {
5 |     Name = "iaasweek"
6 |   }
7 | }


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/main.tf:
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 1 | provider "aws" {
 2 |   region  = "us-east-1"
 3 |   version = "~> 2.0"
 4 | }
 5 | 
 6 | terraform {
 7 |   backend "s3" {
 8 |     bucket = "iaasweek-tfstates-terraform"
 9 |     key    = "terraformt.tfstate"
10 |     region = "us-east-1"
11 |   }
12 | }


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/nat.tf:
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 1 | resource "aws_eip" "gw" {
 2 |   count = var.az_count
 3 |   vpc   = true
 4 | 
 5 |   tags = {
 6 |     Environment = "iaasweek"
 7 |   }
 8 | }
 9 | 
10 | resource "aws_nat_gateway" "gw" {
11 |   count         = var.az_count
12 |   subnet_id     = element(aws_subnet.public.*.id, count.index)
13 |   allocation_id = element(aws_eip.gw.*.id, count.index)
14 | 
15 |   tags = {
16 |     Environment = "iaasweek"
17 |   }
18 | }


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/routetable-private.tf:
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 1 | resource "aws_route_table" "private" {
 2 |   count  = var.az_count
 3 |   vpc_id = aws_vpc.main.id
 4 | 
 5 |   route {
 6 |     cidr_block     = "0.0.0.0/0"
 7 |     nat_gateway_id = element(aws_nat_gateway.gw.*.id, count.index)
 8 |   }
 9 | 
10 |   tags = {
11 |     Environment = "iaasweek"
12 |   }
13 | }
14 | 
15 | resource "aws_route_table_association" "private" {
16 |   count          = var.az_count
17 |   subnet_id      = element(aws_subnet.private.*.id, count.index)
18 |   route_table_id = element(aws_route_table.private.*.id, count.index)
19 | }


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/routetable.tf:
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1 | resource "aws_route" "internet_access" {
2 |   route_table_id         = aws_vpc.main.main_route_table_id
3 |   destination_cidr_block = "0.0.0.0/0"
4 |   gateway_id             = aws_internet_gateway.gw.id
5 | }
6 | 
7 | 


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/subnets.tf:
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 1 | # Criar subnet public para cada AZ
 2 | resource "aws_subnet" "private" {
 3 |   count             = var.az_count
 4 |   cidr_block        = cidrsubnet(aws_vpc.main.cidr_block, 8, count.index)
 5 |   availability_zone = data.aws_availability_zones.available.names[count.index]
 6 |   vpc_id            = aws_vpc.main.id
 7 | 
 8 |   tags = {
 9 |     Name = "Private"
10 |   }
11 | }
12 | 
13 | # Criar subnet public para cada AZ
14 | resource "aws_subnet" "public" {
15 |   count = var.az_count
16 |   # var.az_count é usado para não conflitar com o private
17 |   cidr_block              = cidrsubnet(aws_vpc.main.cidr_block, 8, var.az_count + count.index)
18 |   availability_zone       = data.aws_availability_zones.available.names[count.index]
19 |   vpc_id                  = aws_vpc.main.id
20 |   map_public_ip_on_launch = true
21 | 
22 |   tags = {
23 |     Name = "Public"
24 |   }
25 | }


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/variables.tf:
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1 | variable "vpc_cidr_block" {
2 |   description = "Range of IPv4 address for the VPC."
3 |   default     = "172.17.0.0/16"
4 | }
5 | 
6 | variable "az_count" {
7 |   default     = "2"
8 | }


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/vpc.tf:
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1 | resource "aws_vpc" "main" {
2 |   cidr_block           = var.vpc_cidr_block
3 |   enable_dns_hostnames = true
4 | 
5 |   tags = {
6 |     Name = "iaasweek"
7 |   }
8 | }
9 | 


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