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Custom action Lambda execution block - Amazon Application Recovery Controller (ARC)
ConfigurationHow it works
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Custom action Lambda execution block

The custom action Lambda execution block enables you to add a customized step to a plan by using a Lambda function.

Configuration

To configure a Lambda execution block, enter the following values.

Important

Before you configure the execution block, make sure that the plan's execution role has the correct IAM policy in place. For more information, see Custom action Lambda execution block sample policy.

  1. Step name: Enter a name.

  2. Step description (optional): Enter a description of the step.

  3. ARN of the Lambda function to be invoked in primary and secondary Regions: Specify the ARN of the Lambda function to run for this step.

  4. Region to run Lambda function: In the drop-down menu, choose the Region that you want to run the Lambda functions in.

  5. Timeout: Enter a timeout value.

  6. Retry interval: Enter a retry interval, to rerun the Lambda function if it does not succeed within this interval.

Then, choose Save step.

How it works

  • When you create a custom action Lambda execution block, you're required to specify two Lambda functions for the step to execute—one in each of the plan's Regions.

  • You can configure which Region you want the Lambda to run in, for example, in the activating Region or in the deactivating Region. However, if you execute in the deactivating Region, you take a dependency on that Region. We do not recommend that you take a dependency on the deactivating Region.

This block supports both graceful and ungraceful execution modes. In ungraceful execution mode, Region switch skips the Lambda execution block step.