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pransh62390pransh62390
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Created module for aws vpc terraform
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17 files changed

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‎modules/network/vpc/main.tf‎

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resource "aws_vpc" "vpc" {
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cidr_block = var.vpc_cidr
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enable_dns_support = var.vpc_enable_dns_support
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enable_dns_hostnames = var.vpc_enable_dns_hostnames
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tags = merge(var.vpc_tags, tomap({"Name" = var.short_env}))
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}
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# Internet-gateway
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resource "aws_internet_gateway" "igw" {
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vpc_id = aws_vpc.vpc.id
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tags = merge(var.vpc_tags, tomap({"Name" = var.short_env}))
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}
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#EIP for Nat attaching
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resource "aws_eip" "nat" {
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domain = "vpc"
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tags = merge(var.vpc_tags, tomap({"Name" = "${var.short_env}-nat"}))
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}
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#Nat gateway setup
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resource "aws_nat_gateway" "nat-gw" {
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allocation_id = aws_eip.nat.id
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subnet_id = aws_subnet.public[0].id
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tags = merge(var.vpc_tags, tomap({"Name" = "${var.short_env}"}))
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}
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resource "aws_subnet" "public" {
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count = length(var.public_subnets)
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cidr_block = var.public_subnets[count.index].CIDR_BLOCK
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vpc_id = aws_vpc.vpc.id
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availability_zone = var.public_subnets[count.index].AVAILABILITY_ZONE
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map_public_ip_on_launch = true
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tags = merge(var.vpc_tags, tomap({"Name" = var.public_subnets[count.index].NAME}))
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}
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resource "aws_subnet" "private" {
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count = length(var.private_subnets)
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cidr_block = var.private_subnets[count.index].CIDR_BLOCK
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vpc_id = aws_vpc.vpc.id
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availability_zone = var.private_subnets[count.index].AVAILABILITY_ZONE
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tags = merge(var.vpc_tags, tomap({"Name" = var.private_subnets[count.index].NAME}))
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}
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resource "aws_security_group" "default" {
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name = "${var.short_env}-default"
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description = "Default SG to alllow traffic from the VPC"
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vpc_id = aws_vpc.vpc.id
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depends_on = [
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aws_vpc.vpc
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]
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ingress {
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from_port = "0"
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to_port = "0"
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protocol = "-1"
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self = true
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}
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egress {
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from_port = "0"
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to_port = "0"
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protocol = "-1"
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cidr_blocks = ["0.0.0.0/0"]
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}
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tags = merge(var.vpc_tags, tomap({"Name" = "${var.short_env}-default"}))
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}

‎modules/network/vpc/outputs.tf‎

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output "id" { value = aws_vpc.vpc.id }
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output "cidr_block" { value = aws_vpc.vpc.cidr_block }
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output "igw" { value = aws_internet_gateway.igw.id }
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output "nat-gw" { value = aws_nat_gateway.nat-gw.id }
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output "public_ids" { value = aws_subnet.public.*.id }
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output "private_ids" { value = aws_subnet.private.*.id }
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output "public-route-table-id" { value = aws_route_table.public-routes.id }
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output "private-route-table-id" { value = aws_route_table.private-routes.id }

‎modules/network/vpc/route_table.tf‎

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resource "aws_route_table" "public-routes" {
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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.igw.id
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}
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tags = merge(var.vpc_tags, tomap({"Name" = "${var.short_env}-public"}))
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}
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resource "aws_route_table" "private-routes" {
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vpc_id = aws_vpc.vpc.id
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route {
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cidr_block = "0.0.0.0/0"
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nat_gateway_id = aws_nat_gateway.nat-gw.id
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}
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tags = merge(var.vpc_tags, tomap({"Name" = "${var.short_env}-private"}))
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}
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resource "aws_route_table_association" "public-route-assoc" {
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count = length(aws_subnet.public.*.id)
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subnet_id = element(aws_subnet.public.*.id[*], count.index)
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route_table_id = aws_route_table.public-routes.id
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}
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resource "aws_route_table_association" "private-route-assoc" {
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count = length(aws_subnet.private.*.id)
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subnet_id = element(aws_subnet.private.*.id[*], count.index)
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route_table_id = aws_route_table.private-routes.id
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}
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‎modules/network/vpc/variables.tf‎

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variable "vpc_cidr" {}
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variable "vpc_enable_dns_support" {}
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variable "vpc_enable_dns_hostnames" {}
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variable "vpc_tags" {}
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variable "short_env" {}
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variable "public_subnets" {
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type = list(object({
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CIDR_BLOCK = string
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AVAILABILITY_ZONE = string
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NAME = string
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}))
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}
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variable "private_subnets" {
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type = list(object({
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CIDR_BLOCK = string
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AVAILABILITY_ZONE = string
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NAME = string
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}))
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}

‎modules/vpc/main.tf‎

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This file was deleted.

‎templates/vpc copy/locals.tf‎

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data "aws_caller_identity" "current" {}
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locals {
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common_tags = {
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"App" = var.APPLICATION
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"Environment" = var.LONG_ENV
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"Env" = var.SHORT_ENV
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"BU" = var.BUSINESS_UNIT
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"BUSubcategory" = var.BUSINESS_UNIT_SUBCATEGORY
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"BUEmail" = var.BUSINESS_UNIT_EMAIL
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"CC" = var.COST_CENTRE
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"AwsAccountShort" = var.AWS_ACCOUNT_SHORT
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"AwsAccount" = var.AWS_ACCOUNT
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"AwsAccountId" = data.aws_caller_identity.current.account_id
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"ManagedBy" = "terraform"
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}
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}

‎templates/vpc copy/main.tf‎

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module "vpc" {
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source = "../../../..//modules/vpc/vpc_new"
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for_each = var.VPC_LIST
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vpc_cidr = each.value.VPC_CIDR
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vpc_enable_dns_support = each.value.VPC_ENABLE_DNS_SUPPORT
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vpc_enable_dns_hostnames = each.value.VPC_ENABLE_DNS_HOSTNAMES
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vpc_tags = local.common_tags
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short_env = var.SHORT_ENV
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public_subnets = each.value.PUBLIC_SUBNETS
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private_subnets = each.value.PRIVATE_SUBNETS
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}

‎templates/vpc copy/outputs.tf‎

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‎templates/vpc copy/variables.tf‎

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variable "LONG_ENV" {}
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variable "SHORT_ENV" {}
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variable "APPLICATION" {}
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variable "BUSINESS_UNIT" {}
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variable "BUSINESS_UNIT_SUBCATEGORY" {}
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variable "BUSINESS_UNIT_EMAIL" {}
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variable "COST_CENTRE" {}
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variable "AWS_ACCOUNT_SHORT" {}
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variable "AWS_ACCOUNT" {}
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variable "VPC_LIST" {
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type = map(object({
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VPC_CIDR = string
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VPC_ENABLE_DNS_SUPPORT = optional(bool, false)
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VPC_ENABLE_DNS_HOSTNAMES = optional(bool, false)
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PUBLIC_SUBNETS = optional(list(object({
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CIDR_BLOCK = string
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AVAILABILITY_ZONE = string
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NAME = string
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})), [])
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PRIVATE_SUBNETS = optional(list(object({
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CIDR_BLOCK = string
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AVAILABILITY_ZONE = string
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NAME = string
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})), [])
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}))
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}

‎templates/vpc/locals.tf‎

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data "aws_caller_identity" "current" {}
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locals {
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common_tags = {
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"App" = var.APPLICATION
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"Environment" = var.LONG_ENV
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"Env" = var.SHORT_ENV
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"BU" = var.BUSINESS_UNIT
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"BUSubcategory" = var.BUSINESS_UNIT_SUBCATEGORY
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"BUEmail" = var.BUSINESS_UNIT_EMAIL
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"CC" = var.COST_CENTRE
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"AwsAccountShort" = var.AWS_ACCOUNT_SHORT
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"AwsAccount" = var.AWS_ACCOUNT
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"AwsAccountId" = data.aws_caller_identity.current.account_id
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"ManagedBy" = "terraform"
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"Name" = var.VPC_NAME
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}
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}

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