test-infra

This repository contains tools and configuration files for the testing and automation needs of the Kubernetes project.

Our architecture diagram provides a (wildly out of date #13063) overview of how the different tools and services interact.

CI Job Management

Kubernetes uses a prow instance at prow.k8s.io to handle CI and automation for the entire project. Everyone can participate in a self-service PR-based workflow, where changes are automatically deployed after they have been reviewed. All job configs are located in config/jobs

• Add or update job configs
• Delete job configs
• Test job configs locally
• Trigger jobs on PRs using bot commmands

Dashboards

Test Result Dashboards

• Testgrid shows historical test results over time (testgrid)
• Triage shows clusters of similar test failures across all jobs (triage)
• velodrome/bigquery-metrics shows failure and flake metrics for jobs related to kubernetes/kubernetes (velodrome, metrics)

Job and PR Dashboards

• Deck shows what jobs are running or have recently run in prow (prow/cmd/deck)
• Gubernator's PR Dashboard shows which PRs need your review (gubernator)
• PR Status shows what needs to be done to get PRs matching a GitHub Query to merge (prow/cmd/tide)
• Tide History shows what actions tide has taken over time to trigger tests and merge PRs (prow/cmd/tide)
• Tide Status shows what PRs are in tide pools to be tested and merged (prow/cmd/tide)
• velodrome/monitoring shows tide pool and merge metrics (velodrome)

Other Tools

• boskos manages pools of resources; our CI leases GCP projects from these pools
• experiment/ is a catchall directory for one-shot tools or scripts
• gcsweb is a UI we use to display test artifacts stored in public GCS buckets
• ghproxy is a GitHub-aware reverse proxy cache to help keep our GitHub API token usage within rate limits
• gopherage is a tool for manipulating Go coverage files
• greenhouse is a shared bazel cache we use to ensure faster build and test presubmit jobs
• label_sync creates, updates and migrates GitHub labels across orgs and repos based on labels.yaml file
• kettle extracts test results from GCS and puts them into bigquery
• kubetest is how our CI creates and e2e tests kubernetes clusters
• maintenance/migratestatus is used to migrate or retire GitHub status contexts on PRs across orgs and repos
• metrics runs queries against bigquery to generate metrics based on test results
• robots/commenter is used by some of our jobs to comment on GitHub issues

Contributing

Please see CONTRIBUTING.MD