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Litmus

Installation

helm repo add litmuschaos https://litmuschaos.github.io/litmus-helm/
helm repo list
kubectl create ns litmus
helm upgrade --install chaos litmuschaos/litmus \
  --namespace "litmus" \
  --set "portal.frontend.service.type=NodePort" \
  --set "mongodb.image.registry=ghcr.io/zcube" \
  --set "mongodb.image.repository=bitnami-compat/mongodb" \
  --set "mongodb.image.tag=6.0.5"
kubectl port-forward svc/chaos-litmus-frontend-service -n litmus 9091:9091

Concepts

  • Experiment
  • Set of chaos faults defined in a definitive sequence to achieve desired chaos impact

Architecture

  • Control Plane
  • Create and schedule experiments

  • Components

    • Authentication Server: authentication and authorization
    • Backend server: serves requests received from the ChaosCenter (either query the db or the execution plane)
    • Database: NoSQL db to store users, experiments execution, experiment templates, projects
    • ChaosCenter
    • WebUI
    • Litmusctl
    • Litmus API

  • Execution Plane

  • Where the experiment configuration is stored
  • Interprets the experiment
  • Can be running in a different infrastructure/cluster