Terraform AWS ARC Billing Module Usage Guide¶

Introduction¶

Purpose of the Document¶

This document provides guidelines and instructions for users looking to implement Terraform module for managing AWS budgets, and sending billing alarms to Slack.

Module Overview¶

The terraform-aws-arc-billing module provides a secure and modular foundation for managing AWS budgets, and sending billing alarms to Slack.

Prerequisites¶

Before using this module, ensure you have the following:

AWS credentials configured.
Terraform installed.
A working knowledge of AWS budgets and Billing

Getting Started¶

Module Source¶

To use the module in your Terraform configuration, include the following source block:

module "example_budgets" {
  source  = "sourcefuse/arc-billing/aws"
  version = "1.0.0"
  # insert the required variables here
}

Integration with Existing Terraform Configurations¶

Integrate the module with your existing Terraform mono repo configuration, follow the steps below:

Create a new folder in terraform/ named billing-alerts.
Create the required files, see the examples to base off of.
Configure with your backend
- Create the environment backend configuration file: config.<environment>.hcl
  - region: Where the backend resides
  - key: <working_directory>/terraform.tfstate
  - bucket: Bucket name where the terraform state will reside
  - dynamodb_table: Lock table so there are not duplicate tfplans in the mix
  - encrypt: Encrypt all traffic to and from the backend

Required AWS Permissions¶

Ensure that the AWS credentials used to execute Terraform have the necessary permissions to create AWS Budgets and billing alerts

Module Configuration¶

Input Variables¶

For a list of input variables, see the README Inputs section.

Output Values¶

For a list of outputs, see the README Outputs section.

Module Usage¶

Basic Usage¶

For basic usage, see the example folder.

This example will create:

AWS Budgets based on the var.budgets variable. AWS Budgets gives you the ability to set custom cost and usage budgets that alert you when your costs or usage exceed your budgeted amount.

notifications_enabled and encryption_enabled are flags to enable notifications and encryption respectively.

slack_webhook_url, slack_channel, and slack_username are used to configure notifications to a Slack channel.

billing_alerts_sns_subscribers is a list of email addresses that will receive notifications when the budget thresholds are breached.

Tips and Recommendations¶

The module focuses on setting up AWS Budgets and notifications for cost management and monitoring. Adjust the configuration parameters as needed for your specific use case.

Troubleshooting¶

Reporting Issues¶

If you encounter a bug or issue, please report it on the GitHub repository.

Security Considerations¶

AWS VPC¶

Understand the security considerations related to AWS Billing when using this module.

Best Practices for AWS billing¶

Follow best practices to ensure secure Billing configurations. Billing Security on AWS

Contributing and Community Support¶

Contributing Guidelines¶

Contribute to the module by following the guidelines outlined in the CONTRIBUTING.md file.

Reporting Bugs and Issues¶

If you find a bug or issue, report it on the GitHub repository.

License¶

License Information¶

This module is licensed under the Apache 2.0 license. Refer to the LICENSE file for more details.

Open Source Contribution¶

Contribute to open source by using and enhancing this module. Your contributions are welcome!