konflux-chaos

Running Chaos Tests with Konflux

Overview

This project enables running chaos tests as part of the Konflux integration pipeline. This process typically involves three key steps:

• Cluster Provisioning: For provisioning an OpenShift cluster, we reuse tasks provided by the Konflux project. These tasks handle the setup of the cluster seamlessly.
• Application Deployment: After provisioning the cluster, users need to deploy their application. You can customize the application deployment template stepactions/step-deploy-app.yaml to match your application's requirements. This modified template is used in the application provisioning task task/task-run-app.yaml.
• Chaos Test Execution: Once the application is deployed, you can run Krkn Chaos tests.

Example Template

trex-chaos-test.yaml

flowchart TD
 Start((Start))
 subgraph prov-cluster["Provision Cluster"]
        parse-metadata["Parse metadata"]
        provision-eaas-space["Provision eaas space"]
        provision-cluster["Provision cluster"]
  end
 subgraph create-app1["Deploys app to Namesapce"]
        app1["Deploy app "]
  end

 subgraph run-krkn1["Run krkn in Namesapce"]
        krkn1["krkn chaos test"]
  end

    Start --> prov-cluster
    parse-metadata --> provision-eaas-space
    provision-eaas-space --> provision-cluster
    prov-cluster --> create-app1
    create-app1 --> run-krkn1

Loading

Sequential Execution:

Run chaos tests one after another.

flowchart TD
 Start((Start))
 subgraph prov-cluster["Provision Cluster"]
        parse-metadata["Parse metadata"]
        provision-eaas-space["Provision eaas space"]
        provision-cluster["Provision cluster"]
  end
 subgraph create-app1["Deploys app to Namesapce"]
        app1["Deploy app "]
  end

 subgraph run-krkn1["Run krkn in Namesapce"]
        krkn1["krkn chaos test"]
  end
 subgraph run-krkn2["Run krkn in Namesapce"]
        krkn2["krkn chaos test"]
  end
    Start --> prov-cluster
    parse-metadata --> provision-eaas-space
    provision-eaas-space --> provision-cluster
    prov-cluster --> create-app1
    create-app1 --> run-krkn1
    run-krkn1 -.-> run-krkn2

Loading

Parallel Execution: Execute chaos tests concurrently.

Refer to the sample template trex-chaos-perf-test.yaml to see how to run load tests (performance tests) alongside Krkn chaos tests in parallel.

flowchart TD
 Start((Start))
 subgraph prov-cluster["Provision Cluster"]
        parse-metadata["Parse metadata"]
        provision-eaas-space["Provision eaas space"]
        provision-cluster["Provision cluster"]
  end
 subgraph create-app1["Deploys app to Namesapce1"]
        app1["Deploy app "]
  end
 subgraph create-app2["Deploys app to Namesapce2"]
        app2["Deploy app"]
  end
 subgraph create-app3["Deploys app to NamesapceN"]
        app3["Deploy app"]
  end   
 DynamicTask1{DynamicTask: Deploy apps to unique namespace basedon chaos test name} 
 DynamicTask2{DynamicTask: Runs Chaos tests against apps deployed}
 subgraph run-krkn1["Run krkn in Namesapce1"]
        perf1["App performance test"]
        krkn1["krkn chaos test"]
  end
  subgraph run-krkn2["Run krkn Namesapce2"]
        perf2["App performance test"]
        krkn2["krkn chaos test"]
  end
  subgraph run-krkn3["Run krkn NamesapceN"]
        perf3["App performance test"]
        krkn3["krkn chaos test"]
  end
    Start --> prov-cluster
    parse-metadata --> provision-eaas-space
    provision-eaas-space --> provision-cluster

    prov-cluster --> DynamicTask1
    
    DynamicTask1 -->|Generate| create-app1
    DynamicTask1 -->|Generate| create-app2
    DynamicTask1 -.->|Generate| create-app3

    create-app1 --> DynamicTask2
    create-app2 --> DynamicTask2
    create-app3 -.-> DynamicTask2
    
    DynamicTask2 -->|Generate| run-krkn1
    DynamicTask2 -->|Generate| run-krkn2
    DynamicTask2 -.->|Generate| run-krkn3

Loading

Customizing Krkn Behavior

Krkn's stepactions provide a flexible framework for tailoring chaos engineering experiments. You can customize the following aspects:

• Test Name: Specify the desired Krkn test to use.
• Kubeconfig: Specify Kubernetes configuration to use.
• Namespace: Ensure the target application is deployed to the same namespace as the Krkn test.
• Test Variables: Configure necessary variables within the stepaction script or via environment variables.

Tips:

• Template Customization: Adapt the step-deploy-app.yaml template to align with your application's deployment process.
• Parallel Execution: Leverage the trex-chaos-perf-test.yaml template to execute multiple tests simultaneously.
• Krkn Stepaction Flexibility: Customize stepactions to fine-tune chaos engineering experiments based on specific use cases. By following these guidelines, you can effectively integrate chaos engineering into your KInflux workflows, enhancing the reliability and resilience of your applications.