GitHub - cloudposse/terraform-aws-vpc: Terraform Module that defines a VPC with public/private subnets across multiple AZs with Internet Gateways

Terraform module to provision a VPC with Internet Gateway. Contains a submodule for provisioning Interface and/or Gateway VPC Endpoints. This module also supports provisioning additional CIDR blocks for the VPC, with or without using IPAM.

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Examples

module "vpc" {
  source = "cloudposse/vpc/aws"
  # Cloud Posse recommends pinning every module to a specific version
  # version = "x.x.x"
  namespace = "eg"
  stage     = "test"
  name      = "app"

  ipv4_primary_cidr_block = "10.0.0.0/16"

  assign_generated_ipv6_cidr_block = true
}

Full example with terraform-aws-dynamic-subnets:

module "vpc" {
  source = "cloudposse/vpc/aws"
  # Cloud Posse recommends pinning every module to a specific version
  # version     = "x.x.x"
  namespace = "eg"
  stage     = "test"
  name      = "app"

  ipv4_primary_cidr_block = "10.0.0.0/16"

  assign_generated_ipv6_cidr_block = false
}

module "dynamic_subnets" {
  source = "cloudposse/dynamic-subnets/aws"
  # Cloud Posse recommends pinning every module to a specific version
  # version     = "x.x.x"
  namespace          = "eg"
  stage              = "test"
  name               = "app"
  availability_zones = ["us-west-2a","us-west-2b","us-west-2c"]
  vpc_id             = module.vpc.vpc_id
  igw_id             = [module.vpc.igw_id]
  cidr_block         = "10.0.0.0/16"
}

Submodule for provisioning VPC Endpoints:

module "vpc_endpoints" {
  source = "cloudposse/vpc/aws//modules/vpc-endpoints"
  # Cloud Posse recommends pinning every module to a specific version
  # version     = "x.x.x"

  vpc_id = module.vpc.vpc_id

  gateway_vpc_endpoints = {
    "s3" = {
      name = "s3"
      policy = jsonencode({
        Version = "2012-10-17"
        Statement = [
          {
            Action = [
              "s3:*",
            ]
            Effect    = "Allow"
            Principal = "*"
            Resource  = "*"
          },
        ]
      })
    }
  }
  interface_vpc_endpoints = {
    "ec2" = {
      name                = "ec2"
      security_group_ids  = ["sg-12341234123412345"]
      subnet_ids          = module.dynamic_subnets.private_subnet_ids
      policy              = null
      private_dns_enabled = false
    }
  }
}

Makefile Targets

Available targets:

  help                                Help screen
  help/all                            Display help for all targets
  help/short                          This help short screen
  lint                                Lint terraform code

Requirements

Name	Version
terraform	>= 1.0.0
aws	>= 4.9.0

Providers

Name	Version
aws	>= 4.9.0

Modules

Name	Source	Version
label	cloudposse/label/null	0.25.0
this	cloudposse/label/null	0.25.0

Resources

Name	Type
aws_default_network_acl.default	resource
aws_default_route_table.default	resource
aws_default_security_group.default	resource
aws_egress_only_internet_gateway.default	resource
aws_internet_gateway.default	resource
aws_vpc.default	resource
aws_vpc_ipv4_cidr_block_association.default	resource
aws_vpc_ipv6_cidr_block_association.default	resource

Inputs

Name	Description	Type	Default	Required
additional_tag_map	Additional key-value pairs to add to each map in `tags_as_list_of_maps`. Not added to `tags` or `id`. This is for some rare cases where resources want additional configuration of tags and therefore take a list of maps with tag key, value, and additional configuration.	`map(string)`	`{}`	no
assign_generated_ipv6_cidr_block	When `true`, assign AWS generated IPv6 CIDR block to the VPC. Conflicts with `ipv6_ipam_pool_id`.	`bool`	`true`	no
attributes	ID element. Additional attributes (e.g. `workers` or `cluster`) to add to `id`, in the order they appear in the list. New attributes are appended to the end of the list. The elements of the list are joined by the `delimiter` and treated as a single ID element.	`list(string)`	`[]`	no
context	Single object for setting entire context at once. See description of individual variables for details. Leave string and numeric variables as `null` to use default value. Individual variable settings (non-null) override settings in context object, except for attributes, tags, and additional_tag_map, which are merged.	`any`	{ "additional_tag_map": {}, "attributes": [], "delimiter": null, "descriptor_formats": {}, "enabled": true, "environment": null, "id_length_limit": null, "label_key_case": null, "label_order": [], "label_value_case": null, "labels_as_tags": [ "unset" ], "name": null, "namespace": null, "regex_replace_chars": null, "stage": null, "tags": {}, "tenant": null }	no
default_network_acl_deny_all	When `true`, manage the default network acl and remove all rules, disabling all ingress and egress. When `false`, do not mange the default networking acl, allowing it to be managed by another component.	`bool`	`false`	no
default_route_table_no_routes	When `true`, manage the default route table and remove all routes, disabling all ingress and egress. When `false`, do not mange the default route table, allowing it to be managed by another component. Conflicts with Terraform resource `aws_main_route_table_association`.	`bool`	`false`	no
default_security_group_deny_all	When `true`, manage the default security group and remove all rules, disabling all ingress and egress. When `false`, do not manage the default security group, allowing it to be managed by another component.	`bool`	`true`	no
delimiter	Delimiter to be used between ID elements. Defaults to `-` (hyphen). Set to `""` to use no delimiter at all.	`string`	`null`	no
descriptor_formats	Describe additional descriptors to be output in the `descriptors` output map. Map of maps. Keys are names of descriptors. Values are maps of the form `{<br/> format = string<br/> labels = list(string)<br/>}` (Type is `any` so the map values can later be enhanced to provide additional options.) `format` is a Terraform format string to be passed to the `format()` function. `labels` is a list of labels, in order, to pass to `format()` function. Label values will be normalized before being passed to `format()` so they will be identical to how they appear in `id`. Default is `{}` (`descriptors` output will be empty).	`any`	`{}`	no
dns_hostnames_enabled	Set `true` to enable DNS hostnames in the VPC	`bool`	`true`	no
dns_support_enabled	Set `true` to enable DNS resolution in the VPC through the Amazon provided DNS server	`bool`	`true`	no
enabled	Set to false to prevent the module from creating any resources	`bool`	`null`	no
environment	ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'	`string`	`null`	no
id_length_limit	Limit `id` to this many characters (minimum 6). Set to `0` for unlimited length. Set to `null` for keep the existing setting, which defaults to `0`. Does not affect `id_full`.	`number`	`null`	no
instance_tenancy	A tenancy option for instances launched into the VPC	`string`	`"default"`	no
internet_gateway_enabled	Set `true` to create an Internet Gateway for the VPC	`bool`	`true`	no
ipv4_additional_cidr_block_associations	IPv4 CIDR blocks to assign to the VPC. `ipv4_cidr_block` can be set explicitly, or set to `null` with the CIDR block derived from `ipv4_ipam_pool_id` using `ipv4_netmask_length`. Map keys must be known at `plan` time, and are only used to track changes.	map(object({ ipv4_cidr_block = string ipv4_ipam_pool_id = string ipv4_netmask_length = number }))	`{}`	no
ipv4_cidr_block_association_timeouts	Timeouts (in `go` duration format) for creating and destroying IPv4 CIDR block associations	object({ create = string delete = string })	`null`	no
ipv4_primary_cidr_block	The primary IPv4 CIDR block for the VPC. Either `ipv4_primary_cidr_block` or `ipv4_primary_cidr_block_association` must be set, but not both.	`string`	`null`	no
ipv4_primary_cidr_block_association	Configuration of the VPC's primary IPv4 CIDR block via IPAM. Conflicts with `ipv4_primary_cidr_block`. One of `ipv4_primary_cidr_block` or `ipv4_primary_cidr_block_association` must be set. Additional CIDR blocks can be set via `ipv4_additional_cidr_block_associations`.	object({ ipv4_ipam_pool_id = string ipv4_netmask_length = number })	`null`	no
ipv6_additional_cidr_block_associations	IPv6 CIDR blocks to assign to the VPC (in addition to the autogenerated one). `ipv6_cidr_block` can be set explicitly, or set to `null` with the CIDR block derived from `ipv6_ipam_pool_id` using `ipv6_netmask_length`. Map keys must be known at `plan` time and are used solely to prevent unnecessary changes.	map(object({ ipv6_cidr_block = string ipv6_ipam_pool_id = string ipv6_netmask_length = number }))	`{}`	no
ipv6_cidr_block_association_timeouts	Timeouts (in `go` duration format) for creating and destroying IPv6 CIDR block associations	object({ create = string delete = string })	`null`	no
ipv6_cidr_block_network_border_group	Set this to restrict advertisement of public addresses to a specific Network Border Group such as a LocalZone. Requires `assign_generated_ipv6_cidr_block` to be set to `true`.	`string`	`null`	no
ipv6_egress_only_internet_gateway_enabled	Set `true` to create an IPv6 Egress-Only Internet Gateway for the VPC	`bool`	`false`	no
ipv6_primary_cidr_block_association	Primary IPv6 CIDR block to assign to the VPC. Conflicts with `assign_generated_ipv6_cidr_block`. `ipv6_cidr_block` can be set explicitly, or set to `null` with the CIDR block derived from `ipv6_ipam_pool_id` using `ipv6_netmask_length`.	object({ ipv6_cidr_block = string ipv6_ipam_pool_id = string ipv6_netmask_length = number })	`null`	no
label_key_case	Controls the letter case of the `tags` keys (label names) for tags generated by this module. Does not affect keys of tags passed in via the `tags` input. Possible values: `lower`, `title`, `upper`. Default value: `title`.	`string`	`null`	no
label_order	The order in which the labels (ID elements) appear in the `id`. Defaults to ["namespace", "environment", "stage", "name", "attributes"]. You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present.	`list(string)`	`null`	no
label_value_case	Controls the letter case of ID elements (labels) as included in `id`, set as tag values, and output by this module individually. Does not affect values of tags passed in via the `tags` input. Possible values: `lower`, `title`, `upper` and `none` (no transformation). Set this to `title` and set `delimiter` to `""` to yield Pascal Case IDs. Default value: `lower`.	`string`	`null`	no
labels_as_tags	Set of labels (ID elements) to include as tags in the `tags` output. Default is to include all labels. Tags with empty values will not be included in the `tags` output. Set to `[]` to suppress all generated tags. Notes: The value of the `name` tag, if included, will be the `id`, not the `name`. Unlike other `null-label` inputs, the initial setting of `labels_as_tags` cannot be changed in later chained modules. Attempts to change it will be silently ignored.	`set(string)`	[ "default" ]	no
name	ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'. This is the only ID element not also included as a `tag`. The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input.	`string`	`null`	no
namespace	ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique	`string`	`null`	no
network_address_usage_metrics_enabled	Set `true` to enable Network Address Usage Metrics for the VPC	`bool`	`false`	no
regex_replace_chars	Terraform regular expression (regex) string. Characters matching the regex will be removed from the ID elements. If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits.	`string`	`null`	no
stage	ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'	`string`	`null`	no
tags	Additional tags (e.g. `{'BusinessUnit': 'XYZ'}`). Neither the tag keys nor the tag values will be modified by this module.	`map(string)`	`{}`	no
tenant	ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for	`string`	`null`	no

Outputs

Name	Description
additional_cidr_blocks	A list of the additional IPv4 CIDR blocks associated with the VPC
additional_cidr_blocks_to_association_ids	A map of the additional IPv4 CIDR blocks to VPC CIDR association IDs
additional_ipv6_cidr_blocks	A list of the additional IPv6 CIDR blocks associated with the VPC
additional_ipv6_cidr_blocks_to_association_ids	A map of the additional IPv6 CIDR blocks to VPC CIDR association IDs
igw_id	The ID of the Internet Gateway
ipv6_cidr_block_network_border_group	The IPv6 Network Border Group Zone name
ipv6_egress_only_igw_id	The ID of the egress-only Internet Gateway
vpc_arn	The ARN of the VPC
vpc_cidr_block	The primary IPv4 CIDR block of the VPC
vpc_default_network_acl_id	The ID of the network ACL created by default on VPC creation
vpc_default_route_table_id	The ID of the route table created by default on VPC creation
vpc_default_security_group_id	The ID of the security group created by default on VPC creation
vpc_id	The ID of the VPC
vpc_ipv6_association_id	The association ID for the primary IPv6 CIDR block
vpc_ipv6_cidr_block	The primary IPv6 CIDR block
vpc_main_route_table_id	The ID of the main route table associated with this VPC

Related Projects

Check out these related projects.

terraform-aws-vpc-peering - Terraform module to create a peering connection between two VPCs
terraform-aws-kops-vpc-peering - Terraform module to create a peering connection between a backing services VPC and a VPC created by Kops
terraform-aws-dynamic-subnets - Terraform module for public and private subnets provisioning in existing VPC
terraform-aws-multi-az-subnets - Terraform module for multi-AZ public and private subnets provisioning
terraform-aws-named-subnets - Terraform module for named subnets provisioning.

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License

Preamble to the Apache License, Version 2.0

Complete license is available in the LICENSE file.

Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

  https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
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Name		Name	Last commit message	Last commit date
Latest commit History 93 Commits
.github		.github
docs		docs
examples		examples
modules/vpc-endpoints		modules/vpc-endpoints
test		test
.gitignore		.gitignore
LICENSE		LICENSE
Makefile		Makefile
README.md		README.md
README.yaml		README.yaml
context.tf		context.tf
main.tf		main.tf
outputs.tf		outputs.tf
variables.tf		variables.tf
versions.tf		versions.tf

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