Litmus Architecture
Chaos-Operator
Chaos-Operator watches for the ChaosEngine CR and executes the Chaos-Experiments mentioned in the CR. Chaos-Operator is namespace scoped. By default, it runs in litmus namespace. Once the experiment is completed, chaos-operator invokes chaos-exporter to export chaos metrics to a Prometheus database.
Chaos-CRDs
During installation, the following three CRDs are installed on the Kubernetes cluster.
chaosengines.litmuschaos.io
chaosexperiments.litmuschaos.io
chaosresults.litmuschaos.io
Chaos-Experiments
Chaos Experiment is a CR and are available as YAML files on Chaos Hub. For more details visit Chaos Hub documentation.
Chaos-Engine
ChaosEngine CR links application to experiments. User has to create ChaosEngine YAML by specifying the application label and experiments and create the CR. The CR is watched by Chaos-Operator and chaos-experiments are executed on a given application.
Chaos-Exporter
Optionally metrics can be exported to a Prometheus database. Chaos-Exporter implements the Prometheus metrics endpoint.