Test AWS Fargate (ECS) reliability with Gremlin Failure Flags. Inject latency and errors into containers to validate dependency failure handling.
AWS Fargate abstracts away the EC2 instances behind your ECS tasks. And while the management model has changed, your risk exposure hasn't. Your tasks still call databases, caches, and internal APIs that can slow down or stop answering, and now the only place left to test is the application itself.
Gremlin reaches that layer with Failure Flags. Deploy the sidecar alongside your container and you can inject faults into a running task without any host access whatsoever. Teams usually start with three checks:
- Does one slow dependency take down the whole task? Inject latency into a single call and discover whether other endpoints stay responsive or share the same thread pool.
- Do unhealty tasks impact the user experience? Fail a health check dependency and validate that the scheduler replaces it without interrupting availability.
- Do your circuit breakers open? Trigger repeated failures and confirm the breaker trips, then confirm that it closes again once the dependency recovers.
Fargate took away the host, not the responsibility for what runs on it. Testing the application is how you keep meeting that responsibility.
Dependencies: Failure Test
Simulate a failed dependency by dropping all network traffic to the dependency.
Dependencies: Latency Test
Recreate poor network conditions by delaying all network traffic to a dependency by 100ms.
Unreliable Networks - Dependencies
Simulate unreliable network conditions when communicating with dependencies by adding latency to API calls. Test whether your users are affected when dependency response times degrade.
* Failure Flags works wherever you can add the SDK to your application and run the Gremlin sidecar. Not every language and platform combination has been individually tested, and not all are officially supported. Check our compatibility documentation for what's verified, or get in touch if you don't see your runtime.
Intelligent Health Checks - AWS
Automatically monitor your AWS services during testing in one-click with Intelligent Health Checks.
AWS integration
Integrate Gremlin with your AWS account for automatic Health Check creation, service discovery, and more.
Using Failure Flags by proxy
Use Failure Flags, Gremlin's application-level fault injection feature, without changing a single line of code.
Installing Gremlin on Amazon ECS
Learn how to install Gremlin on EC2-backed Amazon Elastic Container Service (ECS) deployments.
Installing Gremlin on AWS - Configuring your VPC
Amazon Web Services (AWS) has unique networking requirements that must be implemented for Gremlin to run successfully…
Avoid downtime. Use Gremlin to turn failure into resilience.
Gremlin empowers you to proactively root out failure before it causes downtime. See how you can harness chaos to build resilient systems by requesting a demo of Gremlin.
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