# Netflix/chaosmonkey

Chaos Monkey is a resiliency tool that helps applications tolerate random instance failures.

Repository: https://github.com/Netflix/chaosmonkey
Canonical: https://ross.abutalabs.com/products/chaosmonkey
Language: Go
License: Apache-2.0
License Family: permissive
Last push: 2025-01-06T08:37:10+00:00

## Health v2 (maintenance only)
Score: 26/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 16, longevity 100
- inputs: {"age_days": 3606, "days_push": 604, "days_rel": 604, "gap_med": 95, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 17091, forks 1297 (observed 2026-08-28T04:11:17.669114+00:00)

## What it is
Chaos Monkey is a chaos engineering tool from Netflix that randomly terminates virtual machine instances and containers in production to test service resilience. It is written in Go and integrates with Spinnaker for instance termination across AWS, GCE, Azure, Kubernetes, and Cloud Foundry.

## Use cases
- randomly terminate production instances to test resilience
- practice chaos engineering on cloud infrastructure
- verify services tolerate random instance failures
- run scheduled chaos experiments against Kubernetes clusters
- incentivize engineers to build fault-tolerant services

## When to choose
- you already manage deployments with Spinnaker
- you want Netflix-style chaos engineering for cloud instances
- you run services on AWS, GCE, Azure, or Kubernetes and want automated failure injection

## When to avoid
- you don't use Spinnaker for deployment management
- you need chaos experiments beyond instance termination
- you can't tolerate failures in a production environment

## Facets
- artifact type: service
- maturity: maintenance
- function: testing, deployment, cloud
- domain: cloud-computing, microservices, infrastructure-as-code
- platform: go, cloud, self-hosted
- tags: chaos-engineering, resilience, fault-injection, spinnaker, netflix-oss, devops, docker, kubernetes

## Member repositories
- Netflix/chaosmonkey (main) score 26

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:17.669114+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:03:30.360346+00:00, confidence not recorded.
  - readme: https://github.com/Netflix/chaosmonkey (fetched 2026-08-28T04:11:17.669114+00:00, sha 48d33c836b81)
- Data as of 2026-08-30T08:39:29.467469+00:00.