Principle:Kubeflow Kubeflow Integration Testing
| Knowledge Sources | |
|---|---|
| Domains | Release Management, Integration Testing, Kubernetes Compatibility |
| Last Updated | 2026-02-13 00:00 GMT |
Overview
Integration Testing is the practice of verifying that all independently developed Kubeflow sub-project components work together correctly as a unified platform, using end-to-end test suites run against the combined manifests deployment.
Description
Because Kubeflow is composed of many independently developed sub-projects, each with its own release cycle and version number, integration testing serves as the critical validation step that ensures all components function correctly when deployed together. The kubeflow/manifests repository is the integration point where component versions are pinned and the full platform is assembled.
Integration testing goes beyond unit tests or component-level tests by deploying the entire Kubeflow platform on a real Kubernetes cluster and exercising cross-component workflows. For example, a test might create a training job (Trainer), log the resulting model (Model Registry), and serve it for inference (KServe), verifying that the data flows correctly between components.
The ROADMAP.md references a Platform (Manifests+Security) tracking area that covers both the manifests integration work and security concerns such as PodSecurityStandards compliance. This reflects the fact that integration testing must validate not only functional correctness but also security posture and Kubernetes version compatibility.
Usage
Integration Testing should be performed:
- After component releases have been tagged and their versions updated in manifests
- Before producing a release candidate for the platform
- When Kubernetes version compatibility needs to be verified
- When PodSecurityStandards or other security policies have been updated
- After any significant change to the manifests assembly process
Theoretical Basis
The integration testing process is built on several key principles:
Component Version Pinning
The kubeflow/manifests repository pins specific versions of each sub-project. These version pins define exactly which combination of components constitutes a given platform release. Integration testing validates that a specific set of version pins produces a working platform.
Kubernetes Compatibility Matrix
Kubeflow must work across multiple Kubernetes versions. The integration test suite runs against a matrix of supported Kubernetes versions to ensure compatibility. This matrix is defined based on the Kubernetes release cycle and the versions commonly used by Kubeflow's target users.
End-to-End Test Scenarios
Integration tests are structured as end-to-end scenarios that exercise real user workflows:
- Deployment verification: All components deploy successfully and reach a healthy state
- Cross-component workflows: Data flows correctly between components (e.g., training to serving)
- Authentication and authorization: Access controls work correctly across the platform
- Upgrade testing: The platform can be upgraded from the previous version without data loss
PodSecurityStandards Compliance
Tests verify that all deployed workloads comply with Kubernetes PodSecurityStandards, ensuring the platform runs securely on clusters with enforced security policies.
Failure Triage Process
When integration tests fail, the release team must determine:
- Which component introduced the failure
- Whether the failure is a regression or a pre-existing issue
- Whether the failure blocks the release or can be documented as a known issue
- Which Working Group is responsible for the fix
This systematic approach to integration testing provides confidence that the assembled platform meets the quality bar required for a release.