Introduction

Stress the CPU of an ECS task.

Details

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

Use Cases

Test the behavior of the ECS task when the CPU is under high load.

• Will the application crash? Does it recover from the high load?
• 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 cpu stress will be stopped.

Parameters

Parameter	Description	Default
Load on Container CPU	How much CPU load should be inflicted?	100%
Container CPUs	How many workers should be used to stress the CPU?	1 per core
Duration	How long should the CPU be stressed?	30s