feat(terraform): AWS Subnet

Signed-off-by: Peter Mikus <pmikus@cisco.com>
Change-Id: I11d10c4c734354f112a7b6bf4a8f3c0febfc0862

10 files changed, 172 insertions, 0 deletions

diff --git a/fdio.infra.terraform/terraform-aws-subnet/README.md b/fdio.infra.terraform/terraform-aws-subnet/README.md
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+<!-- BEGIN_TF_DOCS -->
+## Requirements
+
+| Name | Version |
+|------|---------|
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.1.4 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | ~> 4.3.0 |
+
+## Providers
+
+| Name | Version |
+|------|---------|
+| <a name="provider_aws"></a> [aws](#provider\_aws) | ~> 4.3.0 |
+
+## Modules
+
+No modules.
+
+## Resources
+
+| Name | Type |
+|------|------|
+| [aws_internet_gateway.internet_gateway](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/internet_gateway) | resource |
+| [aws_route.route](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route) | resource |
+| [aws_security_group.security_group](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/security_group) | resource |
+| [aws_subnet.subnet](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/subnet) | resource |
+| [aws_vpc.vpc](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/vpc) | resource |
+
+## Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|------|---------|:--------:|
+| <a name="input_security_group_description"></a> [security\_group\_description](#input\_security\_group\_description) | Security group description. | `string` | `"Allow inbound/outbound traffic"` | no |
+| <a name="input_security_group_egress"></a> [security\_group\_egress](#input\_security\_group\_egress) | Egress security group map. | `list(any)` | <pre>[<br>  {<br>    "cidr_blocks": [<br>      "0.0.0.0/0"<br>    ],<br>    "from_port": 0,<br>    "ipv6_cidr_blocks": [<br>      "::/0"<br>    ],<br>    "protocol": "-1",<br>    "to_port": 0<br>  }<br>]</pre> | no |
+| <a name="input_security_group_ingress"></a> [security\_group\_ingress](#input\_security\_group\_ingress) | Ingress security group map. | `list(any)` | <pre>[<br>  {<br>    "cidr_blocks": [<br>      "0.0.0.0/0"<br>    ],<br>    "from_port": 22,<br>    "ipv6_cidr_blocks": [<br>      "::/0"<br>    ],<br>    "protocol": "tcp",<br>    "to_port": 22<br>  }<br>]</pre> | no |
+| <a name="input_security_group_name"></a> [security\_group\_name](#input\_security\_group\_name) | Name of the security group. | `string` | n/a | yes |
+| <a name="input_security_group_revoke_rules_on_delete"></a> [security\_group\_revoke\_rules\_on\_delete](#input\_security\_group\_revoke\_rules\_on\_delete) | Instruct Terraform to revoke all of the Security Groups attached ingress and egress rules before deleting the rule itself. | `bool` | `false` | no |
+| <a name="input_subnet_assign_ipv6_address_on_creation"></a> [subnet\_assign\_ipv6\_address\_on\_creation](#input\_subnet\_assign\_ipv6\_address\_on\_creation) | Specify true to indicate that network interfaces created in the specified subnet should be assigned an IPv6 address. | `bool` | `false` | no |
+| <a name="input_subnet_availability_zone"></a> [subnet\_availability\_zone](#input\_subnet\_availability\_zone) | AWS availability zone | `string` | `"us-east-1a"` | no |
+| <a name="input_subnet_map_public_ip_on_launch"></a> [subnet\_map\_public\_ip\_on\_launch](#input\_subnet\_map\_public\_ip\_on\_launch) | Specify true to indicate that instances launched into the subnet should be assigned a public IP address. | `bool` | `false` | no |
+| <a name="input_tags_environment"></a> [tags\_environment](#input\_tags\_environment) | Environment used for tag. | `string` | `""` | no |
+| <a name="input_tags_name"></a> [tags\_name](#input\_tags\_name) | Name used for tag. | `string` | `""` | no |
+| <a name="input_vpc_assign_generated_ipv6_cidr_block"></a> [vpc\_assign\_generated\_ipv6\_cidr\_block](#input\_vpc\_assign\_generated\_ipv6\_cidr\_block) | Requests an Amazon-provided IPv6 CIDR block with a /56 prefix length for the VPC. | `bool` | `true` | no |
+| <a name="input_vpc_cidr_block"></a> [vpc\_cidr\_block](#input\_vpc\_cidr\_block) | The CIDR block for the association. | `string` | `"192.168.0.0/24"` | no |
+| <a name="input_vpc_enable_dns_hostnames"></a> [vpc\_enable\_dns\_hostnames](#input\_vpc\_enable\_dns\_hostnames) | Whether or not the VPC has DNS hostname support. | `bool` | `true` | no |
+| <a name="input_vpc_enable_dns_support"></a> [vpc\_enable\_dns\_support](#input\_vpc\_enable\_dns\_support) | Whether or not the VPC has DNS support. | `bool` | `true` | no |
+| <a name="input_vpc_instance_tenancy"></a> [vpc\_instance\_tenancy](#input\_vpc\_instance\_tenancy) | The allowed tenancy of instances launched into the selected VPC. | `string` | `"default"` | no |
+
+## Outputs
+
+| Name | Description |
+|------|-------------|
+| <a name="output_vpc_id"></a> [vpc\_id](#output\_vpc\_id) | The ID of the VPC |
+<!-- END_TF_DOCS -->
\ No newline at end of file
diff --git a/fdio.infra.terraform/terraform-aws-subnet/example/main.tf b/fdio.infra.terraform/terraform-aws-subnet/example/main.tf
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+module "vpc" {
+  source                   = "../../terraform-aws-vpc"
+  security_group_name      = "terraform-sg"
+  subnet_availability_zone = "us-east-1a"
+  tags_name                = "terraform-vpc"
+  tags_environment         = "terraform-vpc-environment"
+}
+
+module "subnet" {
+  source                   = "../"
+  subnet_cidr_block        = "192.168.10.0/24"
+  subnet_ipv6_cidr_block   = cidrsubnet(module.vpc.vpc_ipv6_cidr_block, 8, 1)
+  subnet_availability_zone = "us-east-1a"
+  tags_name                = "terraform-subnet"
+  tags_environment         = "terraform-subnet-environment"
+  subnet_vpc_id            = module.vpc.vpc_id
+}
diff --git a/fdio.infra.terraform/terraform-aws-subnet/example/output.tf b/fdio.infra.terraform/terraform-aws-subnet/example/output.tf
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+++ b/fdio.infra.terraform/terraform-aws-subnet/example/output.tf
diff --git a/fdio.infra.terraform/terraform-aws-subnet/example/providers.tf b/fdio.infra.terraform/terraform-aws-subnet/example/providers.tf
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+++ b/fdio.infra.terraform/terraform-aws-subnet/example/providers.tf
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+provider "aws" {
+  region = var.region
+}
\ No newline at end of file
diff --git a/fdio.infra.terraform/terraform-aws-subnet/example/variables.tf b/fdio.infra.terraform/terraform-aws-subnet/example/variables.tf
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+variable "region" {
+  description = "AWS Region."
+  type        = string
+  default     = "us-east-1"
+}
diff --git a/fdio.infra.terraform/terraform-aws-subnet/example/versions.tf b/fdio.infra.terraform/terraform-aws-subnet/example/versions.tf
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+terraform {
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = ">= 4.3.0"
+    }
+  }
+  required_version = ">= 1.1.4"
+}
diff --git a/fdio.infra.terraform/terraform-aws-subnet/main.tf b/fdio.infra.terraform/terraform-aws-subnet/main.tf
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+locals {
+  tags = {
+    "Name"        = "${var.tags_name}"
+    "Environment" = "${var.tags_environment}"
+  }
+}
+
+# Create VPC IPv4 CIDR Block Association
+resource "aws_vpc_ipv4_cidr_block_association" "ipv4_cidr_block_association" {
+  cidr_block = var.subnet_cidr_block
+  vpc_id     = var.subnet_vpc_id
+}
+
+# Create Subnet
+resource "aws_subnet" "subnet" {
+  depends_on = [
+    aws_vpc_ipv4_cidr_block_association.ipv4_cidr_block_association
+  ]
+  assign_ipv6_address_on_creation = var.subnet_assign_ipv6_address_on_creation
+  availability_zone               = var.subnet_availability_zone
+  cidr_block                      = var.subnet_cidr_block
+  ipv6_cidr_block                 = var.subnet_ipv6_cidr_block
+  map_public_ip_on_launch         = var.subnet_map_public_ip_on_launch
+  tags                            = local.tags
+  vpc_id                          = var.subnet_vpc_id
+}
diff --git a/fdio.infra.terraform/terraform-aws-subnet/outputs.tf b/fdio.infra.terraform/terraform-aws-subnet/outputs.tf
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+output "subnet_id" {
+  value       = aws_subnet.subnet.id
+  description = "The ID of the Subnet"
+}
diff --git a/fdio.infra.terraform/terraform-aws-subnet/variables.tf b/fdio.infra.terraform/terraform-aws-subnet/variables.tf
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+variable "tags_name" {
+  description = "Name used for tag."
+  type        = string
+  default     = ""
+}
+
+variable "tags_environment" {
+  description = "Environment used for tag."
+  type        = string
+  default     = ""
+}
+
+# Variables for Subnet
+variable "subnet_assign_ipv6_address_on_creation" {
+  description = "Specify true to indicate that network interfaces created in the specified subnet should be assigned an IPv6 address."
+  type        = bool
+  default     = false
+}
+
+variable "subnet_availability_zone" {
+  description = "AZ for the subnet."
+  type        = string
+  default     = "us-east-1a"
+}
+
+variable "subnet_cidr_block" {
+  description = "The IPv4 CIDR block for the subnet."
+  type        = string
+}
+
+variable "subnet_ipv6_cidr_block" {
+  description = "The IPv6 network range for the subnet, in CIDR notation."
+  type        = string
+}
+
+variable "subnet_map_public_ip_on_launch" {
+  description = "Specify true to indicate that instances launched into the subnet should be assigned a public IP address."
+  type        = bool
+  default     = false
+}
+
+variable "subnet_vpc_id" {
+  description = "The VPC ID."
+  type        = string
+}
diff --git a/fdio.infra.terraform/terraform-aws-subnet/versions.tf b/fdio.infra.terraform/terraform-aws-subnet/versions.tf
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+terraform {
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 4.3.0"
+    }
+  }
+  required_version = ">= 1.1.4"
+}