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guillermo-musumeciguillermo-musumeci
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‎app-variables.tf

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####################################
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## Application Module - Variables ##
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####################################
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# Application definition
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variable "app_name" {
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type = string
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description = "Application name"
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}
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variable "app_environment" {
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type = string
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description = "Application environment"
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}

‎aws-user-data.sh

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#! /bin/bash
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sudo apt-get update
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sudo apt-get install -y apache2
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sudo systemctl start apache2
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sudo systemctl enable apache2
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echo "<h1>Test AWS</h1>" | sudo tee /var/www/html/index.html

‎key-pair-main.tf

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#####################
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## Key Pair - Main ##
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#####################
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# Generates a secure private key and encodes it as PEM
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resource "tls_private_key" "key_pair" {
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algorithm = "RSA"
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rsa_bits = 4096
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}
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# Create the Key Pair
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resource "aws_key_pair" "key_pair" {
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key_name = "${lower(var.app_name)}-${lower(var.app_environment)}-linux-${lower(var.aws_region)}"
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public_key = tls_private_key.key_pair.public_key_openssh
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}
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# Save file
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resource "local_file" "ssh_key" {
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filename = "${aws_key_pair.key_pair.key_name}.pem"
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content = tls_private_key.key_pair.private_key_pem
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}

‎linux-vm-main.tf

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###################################
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## Virtual Machine Module - Main ##
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###################################
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# Create Elastic IP for the EC2 instance
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resource "aws_eip" "linux-eip" {
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vpc = true
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tags = {
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Name = "${lower(var.app_name)}-${var.app_environment}-linux-eip"
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Environment = var.app_environment
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}
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}
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# Create EC2 Instance
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resource "aws_instance" "linux-server" {
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ami = data.aws_ami.ubuntu-linux-1804.id
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instance_type = var.linux_instance_type
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subnet_id = aws_subnet.public-subnet.id
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vpc_security_group_ids = [aws_security_group.aws-linux-sg.id]
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associate_public_ip_address = var.linux_associate_public_ip_address
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source_dest_check = false
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key_name = aws_key_pair.key_pair.key_name
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user_data = file("aws-user-data.sh")
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# root disk
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root_block_device {
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volume_size = var.linux_root_volume_size
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volume_type = var.linux_root_volume_type
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delete_on_termination = true
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encrypted = true
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}
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# extra disk
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ebs_block_device {
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device_name = "/dev/xvda"
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volume_size = var.linux_data_volume_size
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volume_type = var.linux_data_volume_type
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encrypted = true
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delete_on_termination = true
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}
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tags = {
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Name = "${lower(var.app_name)}-${var.app_environment}-linux-server"
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Environment = var.app_environment
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}
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}
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# Associate Elastic IP to Linux Server
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resource "aws_eip_association" "linux-eip-association" {
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instance_id = aws_instance.linux-server.id
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allocation_id = aws_eip.linux-eip.id
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}
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# Define the security group for the Linux server
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resource "aws_security_group" "aws-linux-sg" {
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name = "${lower(var.app_name)}-${var.app_environment}-linux-sg"
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description = "Allow incoming HTTP connections"
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vpc_id = aws_vpc.vpc.id
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ingress {
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from_port = 80
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to_port = 80
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protocol = "tcp"
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cidr_blocks = ["0.0.0.0/0"]
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description = "Allow incoming HTTP connections"
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}
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ingress {
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from_port = 22
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to_port = 22
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protocol = "tcp"
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cidr_blocks = ["0.0.0.0/0"]
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description = "Allow incoming SSH connections"
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}
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egress {
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from_port = 0
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to_port = 0
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protocol = "-1"
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cidr_blocks = ["0.0.0.0/0"]
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}
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tags = {
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Name = "${lower(var.app_name)}-${var.app_environment}-linux-sg"
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Environment = var.app_environment
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}
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}

‎linux-vm-output.tf

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#####################################
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## Virtual Machine Module - Output ##
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#####################################
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output "vm_linux_server_instance_id" {
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value = aws_instance.linux-server.id
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}
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output "vm_linux_server_instance_public_dns" {
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value = aws_instance.linux-server.public_dns
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}
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output "vm_linux_server_instance_public_ip" {
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value = aws_instance.linux-server.public_ip
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}
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output "vm_linux_server_instance_private_ip" {
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value = aws_instance.linux-server.private_ip
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}

‎linux-vm-variables.tf

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########################################
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## Virtual Machine Module - Variables ##
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########################################
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variable "linux_instance_type" {
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type = string
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description = "EC2 instance type for Linux Server"
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default = "t2.micro"
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}
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variable "linux_associate_public_ip_address" {
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type = bool
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description = "Associate a public IP address to the EC2 instance"
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default = true
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}
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variable "linux_root_volume_size" {
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type = number
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description = "Volumen size of root volumen of Linux Server"
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}
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variable "linux_data_volume_size" {
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type = number
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description = "Volumen size of data volumen of Linux Server"
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}
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variable "linux_root_volume_type" {
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type = string
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description = "Volumen type of root volumen of Linux Server. Can be standard, gp3, gp2, io1, sc1 or st1"
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default = "gp2"
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}
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variable "linux_data_volume_type" {
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type = string
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description = "Volumen type of data volumen of Linux Server. Can be standard, gp3, gp2, io1, sc1 or st1"
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default = "gp2"
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}

‎network-main.tf

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##########################################
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## Network Single AZ Public Only - Main ##
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##########################################
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# Create the VPC
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resource "aws_vpc" "vpc" {
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cidr_block = var.vpc_cidr
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enable_dns_hostnames = true
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tags = {
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Name = "${lower(var.app_name)}-${lower(var.app_environment)}-vpc"
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Environment = var.app_environment
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}
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}
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# Define the public subnet
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resource "aws_subnet" "public-subnet" {
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vpc_id = aws_vpc.vpc.id
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cidr_block = var.vpc_public_subnet_cidr
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availability_zone = var.aws_az
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tags = {
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Name = "${lower(var.app_name)}-${lower(var.app_environment)}-public-subnet"
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Environment = var.app_environment
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}
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}
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# Define the internet gateway
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resource "aws_internet_gateway" "gw" {
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vpc_id = aws_vpc.vpc.id
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tags = {
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Name = "${lower(var.app_name)}-${lower(var.app_environment)}-igw"
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Environment = var.app_environment
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}
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}
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# Define the public route table
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resource "aws_route_table" "public-rt" {
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vpc_id = aws_vpc.vpc.id
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route {
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cidr_block = "0.0.0.0/0"
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gateway_id = aws_internet_gateway.gw.id
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}
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tags = {
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Name = "${lower(var.app_name)}-${lower(var.app_environment)}-public-subnet-rt"
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Environment = var.app_environment
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}
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}
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# Assign the public route table to the public subnet
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resource "aws_route_table_association" "public-rt-association" {
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subnet_id = aws_subnet.public-subnet.id
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route_table_id = aws_route_table.public-rt.id
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}

‎network-variables.tf

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##############################################
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## Network Single AZ Public Only - Variables #
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##############################################
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# AWS AZ
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variable "aws_az" {
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description = "AWS AZ"
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default = "eu-west-1c"
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}
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# VPC Variables
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variable "vpc_cidr" {
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description = "CIDR for the VPC"
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default = "10.1.64.0/18"
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}
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# Subnet Variables
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variable "vpc_public_subnet_cidr" {
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description = "CIDR for the public subnet"
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default = "10.1.64.0/24"
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}

‎provider-main.tf

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################################
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## AWS Provider Module - Main ##
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################################
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# AWS Provider
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terraform {
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required_providers {
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aws = {
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source = "hashicorp/aws"
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version = "~> 3.0"
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}
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}
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}
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provider "aws" {
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access_key = var.aws_access_key
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secret_key = var.aws_secret_key
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region = var.aws_region
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}
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‎provider-variables.tf

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#####################################
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## AWS Provider Module - Variables ##
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#####################################
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# AWS connection & authentication
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variable "aws_access_key" {
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type = string
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description = "AWS access key"
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}
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variable "aws_secret_key" {
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type = string
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description = "AWS secret key"
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}
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variable "aws_region" {
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type = string
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description = "AWS region"
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}
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