Cost Reporter

A lambda which sends a daily cost and trend report to slack. It helps with one of the three FinOps phases: Inform. It can send you a report every day / only when cost increases / only when cost breached a threshold depending on your configuration.

Helpful to keep an eye in new projects when the architecture changes quickly, but also for existing projects if you want to keep a close eye on cost.

Example:

Configuration

The following settings can be configured:

• Title: The title for the cost report (i.e.: "Project: XYZ")
• Days: The days to report (i.e. 10)
• MinDailyCost: The minimal daily cost required to trigger a report in $ (i.e. 10)
• OnlyNotifyOnIncrease: Whether to send a report only when the cost increased from yesterday to today
• TargetChannel: The target channel (i.e. "#costoptimization")

Deployment

Prerequisites:

• AWS SAM CLI
• A slack token for the lambda (xoxx-....) with the permission to write files and send messages
• A SecureString SSM Parameter for the Slack token: /cost-reporter/slack-token

How to deploy:

sam build --use-container
sam deploy --guided