trouble-maker

A layer 7 fault injection proxy server.

Supported Protocols

• HTTP/1.1
• More in progress

Building

$ cargo build —release

Running

RUST_LOG=info cargo run —release

Failure Types

• Error
• Delay
• Timeout

Configuration

A basic example

This will proxy requests from 127.0.0.1:3001 to 127.0.0.1:8080 while 50% of the time adding a delay for 300ms and returning an HTTP 500 response.

listener_address = "127.0.0.1:3001"
proxy_address = "127.0.0.1:8080"
metrics_path = "/metrics"
max_concurrent_requests = 5000
scenarios = [
    { path = "/.*", failure_type = "Error", frequency = 0.5, delay = 300 },
]

An example configuration file can be found here.

Resources and Inspiration

• LinkedOut: A Request-Level Failure Injection Framework https://engineering.linkedin.com/blog/2018/05/linkedout--a-request-level-failure-injection-framework
• Awesome Chaos Engineering https://github.com/dastergon/awesome-chaos-engineering
• Toxic Proxy: https://github.com/shopify/toxiproxy