Introduction

Stress the memory of an ECS task.

Details

This attack will run the AWSFIS-Run-Memory-Stress SSM Document on the target ECS task using the SSM agent.

Use Cases

Test the behavior of the ECS task when the memory is under pressure.

• Will the application crash? Does it recover from the high memory consumption?
• Does the auto-scaling work as expected?
• Does the load balancing care for busy workers?
• Is your alerting properly configured?

Prerequisites

• The ECS task must have the SSM agent installed and running.
• The ECS task must use the Linux runtime platform
• The ECS task must not have the execute-command feature enabled

Rollback

The issued SSM command running on the SSM agent will be cancelled and the memory will be freed.

Parameters

Parameter	Description	Default
Memory Percentage	How many the percent of the available virtual memory shall be used?	100%
Workers	How many workers should stress the memory?	1
Duration	How long should the memory be stressed?	30s