vpc

Create VPC (optional)

In an enterprise, the creation of VPC and related resources, usually, is managed by a separate team. Sometimes it is part of the enterprise account vending process.

This is an example Terraform script, which creates the VPC resources required for this solution. This uses the well-known module terraform-aws-modules/vpc/aws to create the VPC resources.

Prerequisites

• Terraform backend provider and state locking providers are identified and bootstrapped.
  • A bootstrap module/example is provided that provisions Amazon S3 for Terraform state storage and Amazon DynamoDB for Terraform state locking.

Execution

• cd to vpc folder.
• Modify the backend "S3" section in provider.tf with correct values for region, bucket, dynamodb_table, and key.
  • Use provided values as guidance.
• Modify terraform.tfvars to your requirements.
  • Use provided values as guidance.
• Make sure you are using the correct AWS Profile that has permission to provision the target resources.
  • aws sts get-caller-identity
• Execute terraform init to initialize Terraform.
• Execute terraform plan and verify the changes.
• Execute terraform apply and approve changes to provision the resources.

Requirements

Name	Version
terraform	>= v1.1.9
aws	>= 4.13.0

Providers

Name	Version
aws	4.22.0

Modules

Name	Source	Version
vpc	terraform-aws-modules/vpc/aws	3.14.2

Resources

Name	Type
aws_route53_zone.pvt_zone	resource

Inputs

Name	Description	Type	Default	Required
env_name	Environment name e.g. dev, prod	string	n/a	yes
project	Project to be used on all the resources identification	string	n/a	yes
region	The AWS Region e.g. us-east-1 for the environment	string	n/a	yes
tags	Mandatory tags for the resources	map(string)	n/a	yes
vpc_private_subnet_tags	Tags for the private subnet	map(string)	n/a	yes
vpc_public_subnet_tags	Tags for the public subnet	map(string)	n/a	yes
vpc_tags	Tags for the VPC	map(string)	n/a	yes
r53_zone_names	Private Route53 Zone names to create and associate with the VPC	list(string)	[]	no

Outputs

Name	Description
r53_hosted_zones	Route 53 hosted zones created
vpc_id	VPC Id for the provisioned VPC
vpc_private_subnet_ids	Subnet Id(s) for the provisioned public Subnets
vpc_public_subnet_ids	Subnet Id(s) for the provisioned public Subnets