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https://github.com/litmuschaos/litmus

Litmus helps SREs and developers practice chaos engineering in a Cloud-native way. Chaos experiments are published at the ChaosHub (https://hub.litmuschaos.io). Community notes is at https://hackmd.io/a4Zu_sH4TZGeih-xCimi3Q
https://github.com/litmuschaos/litmus

chaos-engineering chaos-experiments chaos-testing chaoshub cloud-native cncf devops fault-injection fault-simulation golang google-summer-of-code hacktoberfest k8s kubernetes lfx litmuschaos operator-sdk reliability-engineering resilience-testing site-reliability-engineering

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Litmus helps SREs and developers practice chaos engineering in a Cloud-native way. Chaos experiments are published at the ChaosHub (https://hub.litmuschaos.io). Community notes is at https://hackmd.io/a4Zu_sH4TZGeih-xCimi3Q

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README 

        
LitmusChaos



# [LitmusChaos](https://litmuschaos.io/)

### Open Source Chaos Engineering Platform



[![Slack Channel](https://img.shields.io/badge/Slack-Join-purple)](https://slack.litmuschaos.io)

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[![YouTube Channel](https://img.shields.io/badge/YouTube-Subscribe-red)](https://www.youtube.com/channel/UCa57PMqmz_j0wnteRa9nCaw)








#### *Read this in [other languages](translations/TRANSLATIONS.md).*



[🇰🇷](translations/README-ko.md) [🇨🇳](translations/README-chn.md) [🇧🇷](translations/README-pt-br.md) [🇮🇳](translations/README-hi.md)



## Overview



LitmusChaos is an open source Chaos Engineering platform that enables teams to identify weaknesses & potential outages in infrastructures by 

inducing chaos tests in a controlled way. Developers & SREs can practice Chaos Engineering with LitmusChaos as it is easy to use, based on modern 

Chaos Engineering principles & community collaborated. It is 100% open source & a CNCF project.



LitmusChaos takes a cloud-native approach to create, manage and monitor chaos. The platform itself runs as a set of microservices and uses Kubernetes 

custom resources (CRs) to define the chaos intent, as well as the steady state hypothesis. 



At a high-level, Litmus comprises of:  



- **Chaos Control Plane**: A centralized chaos management tool called chaos-center, which helps construct, schedule and visualize Litmus chaos workflows  

- **Chaos Execution Plane Services**: Made up of a chaos agent and multiple operators that execute & monitor the experiment within a defined 

  target Kubernetes environment. 



![architecture summary](/images/litmus-control-and-execution-plane-overview.png)



At the heart of the platform are the following chaos custom resources: 



- **ChaosExperiment**: A resource to group the configuration parameters of a particular fault. ChaosExperiment CRs are essentially installable templates 

  that describe the library carrying out the fault, indicate permissions needed to run it & the defaults it will operate with. Through the ChaosExperiment,  Litmus supports BYOC (bring-your-own-chaos) that helps integrate (optional) any third-party tooling to perform the fault injection. 



- **ChaosEngine**: A resource to link a Kubernetes application workload/service, node or an infra component to a fault described by the ChaosExperiment. 

  It also provides options to tune the run properties and specify the steady state validation constraints using 'probes'. ChaosEngine is watched by the 

  Chaos-Operator, which reconciles it (triggers experiment execution) via runners. 



The ChaosExperiment & ChaosEngine CRs are embedded within a Workflow object that can string together one or more experiments in a desired order.



- **ChaosResult**: A resource to hold the results of the experiment run. It provides details of the success of each validation constraint, 

  the revert/rollback status of the fault as well as a verdict. The Chaos-exporter reads the results and exposes information as prometheus metrics. 

  ChaosResults are especially useful during automated runs. 



ChaosExperiment CRs are hosted on hub.litmuschaos.io. It is a central hub where the 

application developers or vendors share their chaos experiments so that their users can use them to increase the resilience of the applications 

in production.



![chaos-operator-flow](/images/chaos-operator-flow.png)



## Use cases



- **For Developers**: To run chaos experiments during application development as an extension of unit testing or integration testing.

- **For CI/CD pipeline builders**: To run chaos as a pipeline stage to find bugs when the application is subjected to fail paths in a pipeline.

- **For SREs**: To plan and schedule chaos experiments into the application and/or surrounding infrastructure. This practice identifies the weaknesses 

  in the deployment system and increases resilience.



## Getting Started with Litmus



To get started, check out the Litmus Docs and specifically the Installation section of the Getting Started with Litmus page.



## Contributing to Chaos Hub



Check out the Contributing Guidelines for the Chaos Hub



## Community



### Community Resources:



Feel free to reach out if you have any queries,concerns, or feature requests



- Give us a star ⭐️ - If you are using LitmusChaos or think it is an interesting project, we would love a star ❤️



- Follow LitmusChaos on Twitter [@LitmusChaos](https://twitter.com/LitmusChaos).



- Subscribe to the [LitmusChaos YouTube channel](https://www.youtube.com/channel/UCa57PMqmz_j0wnteRa9nCaw) for regular updates & meeting recordings. 



- To join our [Slack Community](https://slack.litmuschaos.io/) and meet our community members, put forward your questions & opinions, join the #litmus channel on the [Kubernetes Slack](https://slack.k8s.io/). 

### Community Meetings

The Litmus community meets on the third wednesday of every month at 10:00PM IST/6:30 PM CEST/9:30 AM PST.



- [Sync Up Meeting Link](https://harness-io.zoom.us/j/95100368978?pwd=b2VrdCtaakE5U3dhOElFMUJOaXVOUT09)

- [Sync Up Agenda & Meeting Notes](https://hackmd.io/a4Zu_sH4TZGeih-xCimi3Q)

- [Release Tracker](https://github.com/litmuschaos/litmus/milestones)



### Videos



- [Cloud Native Live: Litmus Chaos Engine and a microservices demo app](https://youtu.be/hOghvd9qCzI)

- [Chaos Engineering hands-on - An SRE ideating Chaos Experiments and using LitmusChaos | July 2022](https://youtu.be/_x_7SiesjF0) 

- [Achieve Digital Product Resiliency with Chaos Engineering](https://youtu.be/PQrmBHgk0ps)

- [How to create Chaos Experiments with Litmus | Litmus Chaos tutorial](https://youtu.be/mwu5eLgUKq4) @ [Is it Observable](https://www.youtube.com/c/IsitObservable)

- [Cloud Native Chaos Engineering Preview With LitmusChaos](https://youtu.be/pMWqhS-F3tQ)

- [Get started with Chaos Engineering with Litmus](https://youtu.be/5CI8d-SKBfc) @ [Containers from the Couch](https://www.youtube.com/c/ContainersfromtheCouch)

- [Litmus 2 - Chaos Engineering Meets Argo Workflows](https://youtu.be/B8DfYnDh2F4) @ [DevOps Toolkit](https://youtube.com/c/devopstoolkit)

- [Hands-on with Litmus 2.0 | Rawkode Live](https://youtu.be/D0t3emVLLko) @ [Rawkode Academy](https://www.youtube.com/channel/UCrber_mFvp_FEF7D9u8PDEA)

- [Introducing LitmusChaos 2.0 / Dok Talks #74](https://youtu.be/97BiCNtJbDw) @ [DoK.community](https://www.youtube.com/channel/UCUnXJbHQ89R2uSfKsqQwGvQ)

- [Introduction to Cloud Native Chaos Engineering](https://youtu.be/LK0oDLQE4S8) @ [Kunal Kushwaha](https://www.youtube.com/channel/UCBGOUQHNNtNGcGzVq5rIXjw)

- [#EveryoneCanContribute cafe: Litmus - Chaos Engineering for your Kubernetes](https://youtu.be/IiyrEiK4stQ) @ [GitLab Unfiltered](https://www.youtube.com/channel/UCMtZ0sc1HHNtGGWZFDRTh5A)

- [Litmus - Chaos Engineering for Kubernetes (CNCFMinutes 9)](https://youtu.be/rDQ9XKbSJIc) @ [Saiyam Pathak](https://www.youtube.com/channel/UCi-1nnN0eC9nRleXdZA6ncg)

- [Chaos Engineering with Litmus Chaos by Prithvi Raj || HACKODISHA Workshop](https://youtu.be/eyAG0svCsQA) @ [Webwiz](https://www.youtube.com/channel/UC9yM_PkV0QIIsPA3qPrp)



[And More....](https://www.youtube.com/channel/UCa57PMqmz_j0wnteRa9nCaw)



### Blogs



- CNCF: [Introduction to LitmusChaos](https://www.cncf.io/blog/2020/08/28/introduction-to-litmuschaos/)

- Hackernoon: [Manage and Monitor Chaos via Litmus Custom Resources](https://hackernoon.com/solid-tips-on-how-to-manage-and-monitor-chaos-via-litmus-custom-resources-5g1s33m9)

- [Observability Considerations in Chaos: The Metrics Story](https://dev.to/ksatchit/observability-considerations-in-chaos-the-metrics-story-6cb)



Community Blogs:



- Daniyal Rayn: [Do I need Chaos Engineering on my environment? Trust me you need it!](https://maveric-systems.com/blog/do-i-need-chaos-engineering-on-my-environment-trust-me-you-need-it/)

- LiveWyer: [LitmusChaos Showcase: Chaos Experiments in a Helm Chart Test Suite](https://livewyer.io/blog/2021/03/22/litmuschaos-showcase-chaos-experiments-in-a-helm-chart-test-suite/)

- Jessica Cherry: [Test Kubernetes cluster failures and experiments in your terminal](https://opensource.com/article/21/6/kubernetes-litmus-chaos)

- Yang Chuansheng(KubeSphere): [KubeSphere 部署 Litmus 至 Kubernetes 开启混沌实验](https://kubesphere.io/zh/blogs/litmus-kubesphere/)

- Saiyam Pathak(Civo): [Chaos Experiments on Kubernetes using Litmus to ensure your cluster is production ready](https://www.civo.com/learn/chaos-engineering-kubernetes-litmus)

- Andreas Krivas(Container Solutions):[Comparing Chaos Engineering Tools for Kubernetes Workloads](https://blog.container-solutions.com/comparing-chaos-engineering-tools)

- Akram Riahi(WeScale):[Chaos Engineering : Litmus sous tous les angles](https://blog.wescale.fr/2021/03/11/chaos-engineering-litmus-sous-tous-les-angles/)

- Prashanto Priyanshu(LensKart):[Lenskart’s approach to Chaos Engineering-Part 2](https://blog.lenskart.com/lenskarts-approach-to-chaos-engineering-part-2-6290e4f3a74e)

- DevsDay.ru(Russian):[LitmusChaos at Kubecon EU '21](https://devsday.ru/blog/details/40746)

- Ryan Pei(Armory): [LitmusChaos in your Spinnaker Pipeline](https://www.armory.io/blog/litmuschaos-in-your-spinnaker-pipeline/)

- David Gildeh(Zebrium): [Using Autonomous Monitoring with Litmus Chaos Engine on Kubernetes](https://www.zebrium.com/blog/using-autonomous-monitoring-with-litmus-chaos-engine-on-kubernetes)



## Adopters



Check out the Adopters of LitmusChaos



(_Send a PR to the above page if you are using Litmus in your chaos engineering practice_)



## License



Litmus is licensed under the Apache License, Version 2.0. See [LICENSE](./LICENSE) for the full license text. Some of the projects used by the Litmus project may be governed by a different license, please refer to its specific license.



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Litmus Chaos is part of the CNCF Projects.



[![CNCF](https://github.com/cncf/artwork/blob/master/other/cncf/horizontal/color/cncf-color.png)](https://landscape.cncf.io/?selected=litmus)



## Important Links





  Litmus Docs Litmus Docs








  CNCF Landscape Litmus on CNCF Landscape