whatisgithub

What is test-infra?

kubernetes/test-infra — explained in plain English

Analysis updated 2026-06-26

4,002GoAudience · ops devopsComplexity · 4/5Setup · hard

In one sentence

The tools and configuration that run all automated testing and CI for the Kubernetes project, centered on Prow, a system that triggers tests on pull requests, shows results, and manages code merging.

Mindmap

mindmap
  root((test-infra))
    What it does
      Kubernetes CI plumbing
      PR test automation
      Merge management
    Core Tools
      Prow CI coordinator
      Testgrid dashboard
      Tide merge queue
      Triage grouping
    Tech Stack
      Go
      Kubernetes
      GitHub API
    Audience
      DevOps engineers
      Open source maintainers
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Code map

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filefunction / class

What do people build with it?

USE CASE 1

Set up Prow on your own GitHub organization to automate test runs and merge management for pull requests.

USE CASE 2

Use Testgrid to build a visual history dashboard of test results across your CI jobs over time.

USE CASE 3

Add or change job configurations for Kubernetes CI by submitting an ordinary pull request to this repository.

USE CASE 4

Use the label syncing tool to keep issue labels consistent across multiple related GitHub repositories.

What is it built with?

GoKubernetesDockerPrometheusGitHub API

How does it compare?

kubernetes/test-infrakubernetes/enhancementsegonelbre/gophers
Stars4,0023,8783,799
LanguageGoGoGo
Setup difficultyhardeasyeasy
Complexity4/51/51/5
Audienceops devopsdeveloperdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · hard Time to first run · 1day+

Requires a running Kubernetes cluster, cloud project resources, and a GitHub App with appropriate permissions to operate Prow.

No license information was explicitly stated in the explanation.

So what is it?

kubernetes/test-infra is the home of the tools and configuration that keep the Kubernetes project's testing and automation running. Kubernetes is a large open-source project with thousands of contributors, and this repository contains the plumbing that makes sure every code change gets tested reliably before it is merged. The central piece is a system called Prow, which acts as the project's CI (continuous integration) coordinator. When someone opens or updates a pull request on any Kubernetes repository, Prow is responsible for kicking off the right tests, showing results, and eventually helping merge the code once everything passes. Job configurations for what to test and how are all stored in this repository and updated through ordinary pull requests, so anyone can propose changes to the test setup. The repository also includes several dashboards and supporting tools. Testgrid shows a visual history of test results over time. Triage groups together similar test failures across all jobs so patterns are easier to spot. Deck and the Tide pages show what jobs are running and which pull requests are queued for merging. Beyond Prow, the repo contains smaller utilities: tools to manage pools of cloud project resources used by tests, a proxy to avoid hitting GitHub API rate limits, label synchronization tools across repositories, and scripts that feed test result data into analytics. The whole system is written primarily in Go.

Copy-paste prompts

Prompt 1
I want to deploy Prow to manage CI on my GitHub org. Walk me through the minimal setup using kubernetes/test-infra, what Kubernetes resources do I need, and how do I configure the first job?
Prompt 2
Using the Testgrid configuration in kubernetes/test-infra, explain how I add a new dashboard tab that shows results for my custom test job.
Prompt 3
I want to add a presubmit job that runs my Go tests on every PR in my repo, using the Prow job config format from kubernetes/test-infra. Show me the YAML structure.
Prompt 4
How does the Tide component in kubernetes/test-infra decide when to merge a pull request? Walk me through the merge pool logic and how to configure required labels.

Frequently asked questions

What is test-infra?

The tools and configuration that run all automated testing and CI for the Kubernetes project, centered on Prow, a system that triggers tests on pull requests, shows results, and manages code merging.

What language is test-infra written in?

Mainly Go. The stack also includes Go, Kubernetes, Docker.

What license does test-infra use?

No license information was explicitly stated in the explanation.

How hard is test-infra to set up?

Setup difficulty is rated hard, with roughly 1day+ to a first successful run.

Who is test-infra for?

Mainly ops devops.

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