Skip to main content
Version: 2.2.0

Configuring GitOps


GitOps enables you to configure a single source of truth for your chaos workflows and experiments, any changes made either to the artifacts stored in the configured git repository or the portal will be synced.

Before you begin#

  • Gitops
  • ChaosAgent
  • ChaosWorkflow
  • Ensure that you have an active internet connection and a git repository.

Steps to configure GitOps#

  • Setup a git repository, so that the ChaosCenter can sync with it, and push all the workflows in that repository.
  • The git repo can be public or private but for authorization, you have to provide an access token or any other mode of authentication.
  • Login into ChaosCenter, go to GitOps tab under Settings.

  • Select the Git Repository radio button.
  • Copy the git URL of your git repository and paste it in the Git URL text box.
  • Enter the branch where you want to sync your workflows.

  • You can allow access of your repository either through an access token or through an SSH key.
  • In the case of the SSH key, just copy the key and paste it in theDeploy Keys Tab inside Settings in your git - repository. Click on the allow write access checkbox, and then on the Add key button.
  • Go back to the portal and click on the update button. A modal will pop up showing, Successfully updated GitOps! message.
  • Some metadata will be pushed to your repository, that is the projectID of your project.
  • Now whenever you schedule a workflow, it will automatically be pushed to your repository. And that repository will be the single source of truth.

Steps to configure Event-Triggered Chaos Injection#

  • Once the workflow is pushed to your repository, you’ll notice every workflow has a workflow_id. You can get this from the workflow YAML file. You need to copy the id and annotate the target application so that if there’s any change in the application, gitops will sync the workflow using this workflow_id and run it on your target application. You can use the following command:
kubectl annotate deploy/target-application${workflow_id}
kubectl annotate deploy/target-application
  • You can check if the event-tracker is running using this command:
kubectl get pods -n litmus -w
  • To check the logs copy the pod name of the event-tracker and add it to the following command:
kubectl logs -f event-tracker-pod-name -n litmus

In the logs, you’ll notice that the event-tracker has started. If you make changes in the application the event tracker will trigger the chaos injection. If the policy conditions are met then the event tracker will inform the server to schedule a workflow in that same target. For eg: if you have an Nginx app as your target application, you can just edit the deployment and change its image tag, this will trigger the chaos injection.

Below is a sample policy where two conditions are present and will be validated by the respective operator. The chaos workflow will be triggered if both conditions are met due to the AND condition type.

apiVersion: EventTrackerPolicymetadata:  name: eventtrackerpolicy-sample  namespace: litmusspec:  # Add fields here  condition_type: "and"  conditions:  - key: "spec.replicas"    value: "1"    operator: EqualTo  - key: "spec.template.spec.containers[0].image"    value: "nginx:1.18"    operator: EqualTo

Currently supported policy operators are:

  • EqualTo
  • NotEqualTo
  • LessThan
  • GreaterThan
  • GreaterThanEqualTo
  • LessThanEqualTo


Learn More#