This repo holds Lambda scripts for turning off services (eg AWS Fargate [containers], AWS Aurora [databases]) to save money (eg dev, test environments that don't need to be operational all the time).

Table of Contents

1. Cross-account and Cross-region Events
2. Aurora_Stop
3. Fargate_Stop

Cross-account and Cross-region Events

By default, Lambda/CloudWatch/EventBridge will only execute with the same project set/space. In order to centralize/consolidate the Lambda and CloudWatch/EventBridge, the architecture requires three accounts:

• AccountA: the source event account with a Lambda function that sends events.
• AccountGlobal: the account hosting the global Event bus and forwarding rule to the target account.
• AccountB: the target event account containing our target workload, a Lambda function.

The flow has four steps:

1. EventSender Lambda is triggered.
2. EventSender Lambda sends an event towards the global event bus.
3. Global event bus forwards the event to a target event bus.
4. The target event bus forwards the event to Event Receiver Lambda.

Step-by-step instructions: https://repost.aws/articles/ARIw6q_ozaTmqqI25Eq4YIcQ/a-step-by-step-guide-to-cross-account-and-cross-region-events-with-eventbridge

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Aurora_Stop

This script takes arguments via CloudWatch/EventBridge:

• AURORA_CLUSTER

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Fargate_Stop

This script takes arguments via CloudWatch/EventBridge:

• ECS_CLUSTER
• ECS_SERVICE_NAME

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