| ALB AZ down | ALB AZ down detaches one or more availability zones from an Application Load Balancer for a configurable duration so you can test how clients, target groups, and AZ-aware routing behave when a zone is taken out of the load balancer rotation. | availability, load balancer | #alb-az-down |
| CLB AZ down | CLB AZ down disables one or more availability zones on a Classic Load Balancer for a configurable duration so you can test how clients and back-end instances behave when an AZ is removed from the load balancer rotation. | availability, load balancer | #clb-az-down |
| AZ blackhole | AZ blackhole isolates network traffic in one or more AWS Availability Zones (optionally scoped to specific VPCs or subnets) for a configurable duration and restores connectivity afterwards, so you can test how multi-AZ workloads handle a zone-level outage. | zone, blackhole | #az-blackhole |
| VPC route misconfiguration | VPC route misconfiguration temporarily removes specified CIDR routes from one or more VPC route tables for a configurable duration and restores them afterwards, so you can test how the workload behaves when egress to a Transit Gateway, NAT Gateway, VPC peer, or internet gateway disappears. | vpc, route tables | #vpc-route-misconfiguration |
| DynamoDB replication pause | DynamoDB replication pause pauses cross-region replication on one or more Amazon DynamoDB global tables for a configurable duration using an AWS Fault Injection Service (FIS) experiment, so you can test how your application handles a brief stop in multi-region consistency. | replication, pause, dynamodb | #dynamodb-replication-pause |
| EBS loss by ID | EBS loss by ID detaches an EBS volume by volume ID for a configurable duration and reattaches it afterwards, so you can test how a workload behaves when its storage disappears. | loss, id | #ebs-loss-by-id |
| EBS loss by tag | EBS loss by tag detaches EBS volumes selected by tag for a configurable duration and reattaches them afterwards, so you can test how workloads behave when a tagged subset of storage disappears. | loss, tag | #ebs-loss-by-tag |
| EC2 CPU hog | EC2 CPU hog stresses a configurable number of CPU cores at a configurable load percentage inside a target EC2 instance for a configurable duration, so you can test how the workload behaves when its host is CPU-starved. | cpu, stress | #ec2-cpu-hog |
| EC2 DNS chaos | EC2 DNS chaos fails DNS resolution for selected hostnames on a target EC2 instance for a configurable duration, so you can test how the workload reacts when a dependency cannot be resolved. | dns | #ec2-dns-chaos |
| EC2 HTTP latency | EC2 HTTP latency adds latency to inbound HTTP traffic on a configurable port of a target EC2 instance for a configurable duration, so you can test how clients react when an HTTP service responds slowly. | http, latency | #ec2-http-latency |
| EC2 HTTP modify body | EC2 HTTP modify body rewrites HTTP response bodies on a configurable port of a target EC2 instance for a configurable duration, so you can test how clients react when an upstream returns unexpected content. | http, modify, body | #ec2-http-modify-body |
| EC2 HTTP modify header | EC2 HTTP modify header adds, changes, or removes HTTP headers on requests or responses on a configurable port of a target EC2 instance for a configurable duration, so you can test how clients and servers react when headers are missing or malformed. | http, modify, header | #ec2-http-modify-header |
| EC2 HTTP reset peer | EC2 HTTP reset peer resets inbound TCP connections to an HTTP service on a configurable port of a target EC2 instance for a configurable duration, so you can test how clients react when the server tears down connections mid-flight. | http, reset, peer | #ec2-http-reset-peer |
| EC2 HTTP status code | EC2 HTTP status code rewrites HTTP response status codes on a configurable port of a target EC2 instance for a configurable duration, so you can test how clients react to specific error codes returned by an upstream service. | http, status, code | #ec2-http-status-code |
| EC2 IO stress | EC2 IO stress generates sustained filesystem read and write load on a target EC2 instance for a configurable duration, so you can test how the workload behaves under disk pressure or near-full storage. | io, stress | #ec2-io-stress |
| EC2 memory hog | EC2 memory hog consumes a configurable amount of memory inside a target EC2 instance for a configurable duration, so you can test how the workload behaves when its host is starved of memory. | memory, stress | #ec2-memory-hog |
| EC2 network latency | EC2 network latency adds configurable latency and jitter to outbound traffic on a target EC2 instance for a configurable duration, so you can test how the workload reacts when network round-trip times grow. | network, latency | #ec2-network-latency |
| EC2 network loss | EC2 network loss drops a configurable percentage of outbound packets on a target EC2 instance for a configurable duration, so you can test how the workload reacts when network reliability degrades. | network, loss | #ec2-network-loss |
| EC2 process kill | EC2 process kill kills one or more processes by PID inside a target EC2 instance for a configurable duration, so you can test how the workload recovers when a critical process disappears without losing the host. | process, kill | #ec2-process-kill |
| EC2 stop by ID | EC2 stop by ID stops one or more EC2 instances identified by their instance IDs for a configurable duration and then starts them again, so you can test how the workload behaves when a specific host disappears. | stop, id | #ec2-stop-by-id |
| EC2 stop by tag | EC2 stop by tag stops EC2 instances selected by tag for a configurable duration and starts them again afterwards, so you can test how a workload behaves when a tagged subset of capacity disappears. | stop, tag | #ec2-stop-by-tag |
| ECS agent stop | ECS agent stop halts the ECS agent on one or more EC2 container instances for a configurable duration so you can test how the ECS cluster behaves when the data-plane bridge between agent and control plane is interrupted. | agent, stop | #ecs-agent-stop |
| ECS container CPU hog | ECS container CPU hog stresses CPU inside containers of EC2-backed ECS tasks for a configurable duration so you can test how the application and the host behave under CPU saturation. | container, cpu, stress | #ecs-container-cpu-hog |
| ECS container HTTP latency | ECS container HTTP latency adds latency to inbound HTTP traffic on a configurable port of containers in an EC2-backed ECS task for a configurable duration so you can test how clients react when an HTTP service responds slowly. | container, http, latency | #ecs-container-http-latency |
| ECS container HTTP modify body | ECS container HTTP modify body rewrites HTTP response bodies on a configurable port of containers in an EC2-backed ECS task for a configurable duration so you can test how clients react when an upstream returns unexpected content. | container, http, modify, body | #ecs-container-http-modify-body |
| ECS container HTTP reset peer | ECS container HTTP reset peer resets inbound TCP connections to an HTTP service on a configurable port of containers in an EC2-backed ECS task for a configurable duration so you can test how clients react when the server tears down connections mid-flight. | container, http, reset, peer | #ecs-container-http-reset-peer |
| ECS container HTTP status code | ECS container HTTP status code rewrites HTTP response status codes on a configurable port of containers in an EC2-backed ECS task for a configurable duration so you can test how clients react to specific error codes returned by an upstream service. | container, http, status, code | #ecs-container-http-status-code |
| ECS container IO stress | ECS container IO stress generates sustained filesystem read and write load inside containers of EC2-backed ECS tasks for a configurable duration so you can test how the workload behaves under disk pressure. | container, io, stress | #ecs-container-io-stress |
| ECS container memory hog | ECS container memory hog consumes a configurable amount of memory inside containers of EC2-backed ECS tasks for a configurable duration so you can test how the workload behaves when its container is starved of memory. | container, memory, stress | #ecs-container-memory-hog |
| ECS container network latency | ECS container network latency adds configurable latency to outbound traffic from containers in EC2-backed ECS tasks for a configurable duration so you can test how the workload reacts when network round-trip times grow. | container, network, latency | #ecs-container-network-latency |
| ECS container network loss | ECS container network loss drops a configurable percentage of outbound packets from containers in EC2-backed ECS tasks for a configurable duration so you can test how the workload reacts when network reliability degrades. | container, network, loss | #ecs-container-network-loss |
| ECS container volume detach | ECS container volume detach detaches EBS volumes attached to ECS task containers for a configurable duration so you can test how stateful tasks behave when their storage disappears. | container, volume, detach | #ecs-container-volume-detach |
| ECS Fargate CPU hog | ECS Fargate CPU hog stresses CPU inside a Fargate task for a configurable duration so you can test how the application behaves when its task is CPU-starved. | cpu, stress, fargate | #ecs-fargate-cpu-hog |
| ECS Fargate memory hog | ECS Fargate memory hog consumes a configurable amount of memory inside a Fargate task for a configurable duration so you can test how the application behaves when its task is starved of memory. | memory, stress, fargate | #ecs-fargate-memory-hog |
| ECS instance stop | ECS instance stop stops one or more EC2 container instances belonging to an ECS cluster for a configurable duration so you can test how the cluster reschedules tasks and how the workload behaves when a host disappears. | instance, stop | #ecs-instance-stop |
| ECS invalid container image | ECS invalid container image swaps a container image to an invalid value on an ECS service for a configurable duration so you can test how the deployment, rollback, and monitoring react to a failing image pull. | invalid, container, image | #ecs-invalid-container-image |
| ECS network restrict | ECS network restrict modifies the security group rules of an ECS service for a configurable duration so you can test how the workload behaves when outbound or inbound network access is restricted. | network, restrict | #ecs-network-restrict |
| ECS task scale | ECS task scale changes the desired count of an ECS service for a configurable duration so you can test how the workload behaves under sudden scale-up or scale-down. | task, scale | #ecs-task-scale |
| ECS task stop | ECS task stop stops one or more ECS tasks (selected by service or task ID) for a configurable duration so you can test how the workload behaves when a specific task disappears. | task, stop | #ecs-task-stop |
| ECS update container resource limit | ECS update container resource limit re-registers an ECS task definition with reduced CPU or memory limits for a configurable duration so you can test how the workload behaves under tightened resource constraints. | update, container, resource | #ecs-update-container-resource-limit |
| ECS update container timeout | ECS update container timeout re-registers an ECS task definition with modified start and stop timeouts for a configurable duration so you can test how the deployment behaves when container start or stop takes longer than expected. | update, container, timeout | #ecs-update-container-timeout |
| ECS update task role | ECS update task role swaps the IAM task role on an ECS service for a configurable duration so you can test how the workload behaves when its IAM permissions change. | task, role | #ecs-update-task-role |
| Generic experiment template | Generic experiment template starts a pre-existing AWS Fault Injection Service (FIS) template by ID, so you can fold native AWS-managed faults into a Harness chaos experiment and probe, verify, and report on the result as you do with any other Harness fault. | generic, template, fis | #generic-experiment-template |
| Lambda block TCP connection | Lambda block TCP connection blocks outbound TCP connections from an AWS Lambda function to one or more target hostnames for a configurable duration, so you can test how the function behaves when a TCP-based dependency is unreachable. | lambda, tcp, network, block | #lambda-block-tcp-connection |
| Lambda delete event source mapping | Lambda delete event source mapping deletes one or more event source mappings on an AWS Lambda function for a configurable duration and recreates them afterwards, so you can test how the workload behaves when the function stops receiving events from its source. | lambda, delete, source, map | #lambda-delete-event-source-mapping |
| Lambda delete function concurrency | Lambda delete function concurrency deletes the reserved concurrency configuration on an AWS Lambda function for a configurable duration and restores it afterwards, so you can test how the workload behaves when the function has to share account-level concurrency with other functions. | lambda, delete, concurrency | #lambda-delete-function-concurrency |
| Lambda function layer detach | Lambda function layer detach detaches a specified Lambda layer from a target AWS Lambda function for a configurable duration and reattaches it afterwards, so you can test how the workload behaves when a shared dependency layer disappears. | lambda, detach, function | #lambda-function-layer-detach |
| Lambda inject latency | Lambda inject latency adds a configurable amount of latency to every invocation of an AWS Lambda function for a configurable duration, so you can test how upstream callers and downstream consumers handle slower-than-expected responses, cold-start spikes, and resource contention. | lambda, latency, network | #lambda-inject-latency |
| Lambda toggle event mapping state | Lambda toggle event mapping state disables one or more event source mappings on an AWS Lambda function for a configurable duration and re-enables them afterwards, so you can test how the workload behaves when the function temporarily stops receiving events from its source. | lambda, toggle, map | #lambda-toggle-event-mapping-state |
| Lambda update function memory | Lambda update function memory lowers the memory allocation of an AWS Lambda function for a configurable duration and restores it afterwards, so you can test how the workload behaves with less memory and a proportionally smaller CPU share. | lambda, function, memory | #lambda-update-function-memory |
| Lambda update function timeout | Lambda update function timeout lowers the configured timeout of an AWS Lambda function for a configurable duration and restores it afterwards, so you can test how the workload behaves when invocations are cut short. | lambda, timeout, update | #lambda-update-function-timeout |
| Lambda inject status code | Lambda inject status code overrides the HTTP status code returned by an AWS Lambda function for a configurable duration, so you can test how upstream callers and downstream consumers handle unexpected error status responses. | lambda, runtime, status code | #lambda-inject-status-code |
| Lambda update role permission | Lambda update role permission detaches a specified IAM policy from the execution role attached to an AWS Lambda function for a configurable duration and reattaches it afterwards, so you can test how the workload behaves when the function loses permission to call a downstream AWS service. | lambda, role, permission | #lambda-update-role-permission |
| Lambda modify response body | Lambda modify response body overrides the response body returned by an AWS Lambda function for a configurable duration, so you can test how upstream callers and client applications handle unexpected payload shapes and corrupted data. | lambda, runtime, function | #lambda-modify-response-body |
| NLB AZ down | NLB AZ down detaches one or more availability zones from a Network Load Balancer for a configurable duration so you can test how clients, target groups, and AZ-aware routing behave when a zone is taken out of the load balancer rotation. | load balancer, availability | #nlb-az-down |
| RDS instance delete | RDS instance delete deletes a target RDS DB instance, so you can test how applications behave when a database disappears permanently and how disaster-recovery procedures handle the loss. | instance, delete | #rds-instance-delete |
| RDS instance reboot | RDS instance reboot reboots a target RDS DB instance (with optional Multi-AZ failover) for a configurable duration, so you can test how applications behave when their database restarts. | instance, reboot | #rds-instance-reboot |
| Resource access restrict | Resource access restrict temporarily strips ingress or egress rules from one or more AWS security groups for a configurable duration and restores them afterwards, so you can test how the workload behaves when network access to (or from) an AWS resource disappears. | resource, access, restrict | #resource-access-restrict |
| SSM chaos by ID | SSM chaos by ID runs an arbitrary AWS Systems Manager document against a target EC2 instance selected by ID, so you can inject custom chaos that is not covered by a dedicated fault. | ssm, id | #ssm-chaos-by-id |
| SSM chaos by tag | SSM chaos by tag runs an arbitrary AWS Systems Manager document against EC2 instances selected by tag, so you can inject custom chaos against a logical group of hosts. | ssm, tag | #ssm-chaos-by-tag |
| Windows EC2 blackhole chaos | Windows EC2 blackhole chaos drops all network traffic destined for specific IPs or hosts on one or more Windows EC2 instances for a configurable duration so you can test how Windows-hosted workloads behave when a specific dependency is completely unreachable. | windows, blackhole, network | #windows-ec2-blackhole-chaos |
| Windows EC2 CPU hog | Windows EC2 CPU hog stresses a configurable number of CPU cores at a configurable load percentage inside one or more Windows EC2 instances for a configurable duration so you can test how Windows-hosted workloads behave when their host is CPU-starved. | cpu, stress, windows | #windows-ec2-cpu-hog |
| Windows EC2 memory hog | Windows EC2 memory hog consumes a configurable amount of memory inside one or more Windows EC2 instances for a configurable duration so you can test how Windows-hosted workloads behave when their host is starved of memory. | memory, stress, windows | #windows-ec2-memory-hog |
| Windows EC2 network latency | Windows EC2 network latency adds a configurable amount of latency to network traffic destined for specific IPs or hosts on one or more Windows EC2 instances for a configurable duration so you can test how Windows-hosted workloads behave when the network is slow. | network, latency, windows | #windows-ec2-network-latency |
| Windows EC2 network loss | Windows EC2 network loss drops a configurable percentage of network packets destined for specific IPs or hosts on one or more Windows EC2 instances for a configurable duration so you can test how Windows-hosted workloads behave when the network is lossy. | network, loss, windows | #windows-ec2-network-loss |
| Windows EC2 process kill | Windows EC2 process kill kills one or more processes (selected by PID or process name) on one or more Windows EC2 instances for a configurable duration so you can test how Windows-hosted workloads behave when their backing processes die. | process, kill, windows, ec2 | #windows-ec2-process-kill |