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<!doctype html><html lang=en class=no-js> <head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><link href=https://kubernetes.github.io/ingress-nginx/developer-guide/getting-started/ rel=canonical><link href=../../examples/canary/ rel=prev><link href=../code-overview/ rel=next><link rel=icon href=../../assets/images/favicon.png><meta name=generator content="mkdocs-1.5.3, mkdocs-material-9.4.5"><title>Getting Started - Ingress-Nginx Controller</title><link rel=stylesheet href=../../assets/stylesheets/main.6a10b989.min.css><link rel=stylesheet href=../../assets/stylesheets/palette.356b1318.min.css><link rel=preconnect href=https://fonts.gstatic.com crossorigin><link rel=stylesheet href="https://fonts.googleapis.com/css?family=Roboto:300,300i,400,400i,700,700i%7CRoboto+Mono:400,400i,700,700i&display=fallback"><style>:root{--md-text-font:"Roboto";--md-code-font:"Roboto Mono"}</style><link rel=stylesheet href=../../extra.css><script>__md_scope=new 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href=../../examples/customization/ssl-dh-param/ class=md-nav__link> <span class=md-ellipsis> Custom DH parameters for perfect forward secrecy </span> </a> </li> <li class=md-nav__item> <a href=../../examples/customization/sysctl/ class=md-nav__link> <span class=md-ellipsis> Sysctl tuning </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=../../examples/docker-registry/ class=md-nav__link> <span class=md-ellipsis> Docker registry </span> </a> </li> <li class=md-nav__item> <a href=../../examples/grpc/ class=md-nav__link> <span class=md-ellipsis> gRPC </span> </a> </li> <li class=md-nav__item> <a href=../../examples/multi-tls/ class=md-nav__link> <span class=md-ellipsis> Multi TLS certificate termination </span> </a> </li> <li class=md-nav__item> <a href=../../examples/rewrite/ class=md-nav__link> <span class=md-ellipsis> Rewrite </span> </a> </li> <li class=md-nav__item> <a href=../../examples/static-ip/ class=md-nav__link> <span class=md-ellipsis> Static IPs </span> 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class=md-nav__list data-md-scrollfix> <li class="md-nav__item md-nav__item--active"> <input class="md-nav__toggle md-toggle" type=checkbox id=__toc> <label class="md-nav__link md-nav__link--active" for=__toc> <span class=md-ellipsis> Getting Started </span> <span class="md-nav__icon md-icon"></span> </label> <a href=./ class="md-nav__link md-nav__link--active"> <span class=md-ellipsis> Getting Started </span> </a> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class=md-nav__title for=__toc> <span class="md-nav__icon md-icon"></span> Table of contents </label> <ul class=md-nav__list data-md-component=toc data-md-scrollfix> <li class=md-nav__item> <a href=#prerequisites class=md-nav__link> Prerequisites </a> </li> <li class=md-nav__item> <a href=#quick-start class=md-nav__link> Quick Start </a> <nav class=md-nav aria-label="Quick Start"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#local-build class=md-nav__link> Local build </a> </li> <li class=md-nav__item> <a href=#testing class=md-nav__link> Testing </a> </li> <li class=md-nav__item> <a href=#custom-docker-image class=md-nav__link> Custom docker image </a> </li> </ul> </nav> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=../code-overview/ class=md-nav__link> <span class=md-ellipsis> Code Overview </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=../../faq/ class=md-nav__link> <span class=md-ellipsis> FAQ </span> </a> </li> </ul> </nav> </div> </div> </div> <div class="md-sidebar md-sidebar--secondary" data-md-component=sidebar data-md-type=toc> <div class=md-sidebar__scrollwrap> <div class=md-sidebar__inner> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class=md-nav__title for=__toc> <span class="md-nav__icon md-icon"></span> Table of contents </label> <ul class=md-nav__list data-md-component=toc data-md-scrollfix> <li class=md-nav__item> <a href=#prerequisites class=md-nav__link> Prerequisites </a> </li> <li class=md-nav__item> <a href=#quick-start class=md-nav__link> Quick Start </a> <nav class=md-nav aria-label="Quick Start"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#local-build class=md-nav__link> Local build </a> </li> <li class=md-nav__item> <a href=#testing class=md-nav__link> Testing </a> </li> <li class=md-nav__item> <a href=#custom-docker-image class=md-nav__link> Custom docker image </a> </li> </ul> </nav> </li> </ul> </nav> </div> </div> </div> <div class=md-content data-md-component=content> <article class="md-content__inner md-typeset"> <h1>Getting Started</h1> <p>Developing for Ingress-Nginx Controller</p> <p>This document explains how to get started with developing for Ingress-Nginx Controller.</p> <p>For the really new contributors, who want to contribute to the INGRESS-NGINX project, but need help with understanding some basic concepts, that are needed to work with the Kubernetes ingress resource, here is a link to the <a href=https://github.com/kubernetes/ingress-nginx/blob/main/NEW_CONTRIBUTOR.md>New Contributors Guide</a>. This guide contains tips on how a http/https request travels, from a browser or a curl command, to the webserver process running inside a container, in a pod, in a Kubernetes cluster, but enters the cluster via a ingress resource. For those who are familiar with those basic networking concepts like routing of a packet with regards to a http request, termination of connection, reverseproxy etc. etc., you can skip this and move on to the sections below. (or read it anyways just for context and also provide feedbacks if any)</p> <h2 id=prerequisites>Prerequisites<a class=headerlink href=#prerequisites title="Permanent link"> ¶</a></h2> <p>Install <a href=https://golang.org/dl/ >Go 1.14</a> or later.</p> <div class="admonition note"> <p class=admonition-title>Note</p> <p>The project uses <a href=https://github.com/golang/go/wiki/Modules>Go Modules</a></p> </div> <p>Install <a href=https://docs.docker.com/engine/install/ >Docker</a> (v19.03.0 or later with experimental feature on)</p> <p>Install <a href=https://kubernetes.io/docs/tasks/tools/ >kubectl</a> (1.24.0 or higher)</p> <p>Install <a href=https://kind.sigs.k8s.io/ >Kind</a></p> <div class="admonition important"> <p class=admonition-title>Important</p> <p>The majority of make tasks run as docker containers</p> </div> <h2 id=quick-start>Quick Start<a class=headerlink href=#quick-start title="Permanent link"> ¶</a></h2> <ol> <li>Fork the repository</li> <li>Clone the repository to any location in your work station</li> <li>Add a <code>GO111MODULE</code> environment variable with <code>export GO111MODULE=on</code></li> <li>Run <code>go mod download</code> to install dependencies</li> </ol> <h3 id=local-build>Local build<a class=headerlink href=#local-build title="Permanent link"> ¶</a></h3> <p>Start a local Kubernetes cluster using <a href=https://kind.sigs.k8s.io/ >kind</a>, build and deploy the ingress controller</p> <p><div class=highlight><pre><span></span><code><span class=go>make dev-env</span>
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</code></pre></div> - If you are working on the v1.x.x version of this controller, and you want to create a cluster with kubernetes version 1.22, then please visit the <a href=https://kind.sigs.k8s.io/docs/user/configuration/#a-note-on-cli-parameters-and-configuration-files>documentation for kind</a>, and look for how to set a custom image for the kind node (image: kindest/node...), in the kind config file.</p> <h3 id=testing>Testing<a class=headerlink href=#testing title="Permanent link"> ¶</a></h3> <p><strong>Run go unit tests</strong></p> <div class=highlight><pre><span></span><code><span class=go>make test</span>
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</code></pre></div> <p><strong>Run unit-tests for lua code</strong></p> <div class=highlight><pre><span></span><code><span class=go>make lua-test</span>
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</code></pre></div> <p>Lua tests are located in the directory <code>rootfs/etc/nginx/lua/test</code></p> <div class="admonition important"> <p class=admonition-title>Important</p> <p>Test files must follow the naming convention <code><mytest>_test.lua</code> or it will be ignored</p> </div> <p><strong>Run e2e test suite</strong></p> <div class=highlight><pre><span></span><code><span class=go>make kind-e2e-test</span>
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</code></pre></div> <p>To limit the scope of the tests to execute, we can use the environment variable <code>FOCUS</code></p> <div class=highlight><pre><span></span><code><span class=go>FOCUS="no-auth-locations" make kind-e2e-test</span>
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</code></pre></div> <div class="admonition note"> <p class=admonition-title>Note</p> <p>The variable <code>FOCUS</code> defines Ginkgo <a href=https://onsi.github.io/ginkgo/#focused-specs>Focused Specs</a></p> </div> <p>Valid values are defined in the describe definition of the e2e tests like <a href=https://github.com/kubernetes/ingress-nginx/blob/main/test/e2e/defaultbackend/default_backend.go#L29>Default Backend</a></p> <p>The complete list of tests can be found <a href=../../e2e-tests/ >here</a></p> <h3 id=custom-docker-image>Custom docker image<a class=headerlink href=#custom-docker-image title="Permanent link"> ¶</a></h3> <p>In some cases, it can be useful to build a docker image and publish such an image to a private or custom registry location.</p> <p>This can be done setting two environment variables, <code>REGISTRY</code> and <code>TAG</code></p> <div class=highlight><pre><span></span><code><span class=go>export TAG="dev"</span>
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<span class=go>export REGISTRY="$USER"</span>
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<span class=go>make build image</span>
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</code></pre></div> <p>and then publish such version with</p> <div class=highlight><pre><span></span><code><span class=go>docker push $REGISTRY/controller:$TAG</span>
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