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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/user-guide/basic-usage/ rel=canonical><link rel="shortcut icon" href=../../assets/images/favicon.png><meta name=generator content="mkdocs-1.1.2, mkdocs-material-6.2.4"><title>Basic usage - NGINX Ingress Controller</title><link rel=stylesheet href=../../assets/stylesheets/main.15aa0b43.min.css><link rel=stylesheet href=../../assets/stylesheets/palette.75751829.min.css><meta name=theme-color content=#009485><link rel=preconnect href=https://fonts.gstatic.com crossorigin><link rel=stylesheet href="https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700%7CRoboto+Mono&display=fallback"><style>body,input{font-family:"Roboto",-apple-system,BlinkMacSystemFont,Helvetica,Arial,sans-serif}code,kbd,pre{font-family:"Roboto Mono",SFMono-Regular,Consolas,Menlo,monospace}</style><link rel=stylesheet 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href=#basic-usage-host-based-routing class=md-skip> Skip to content </a> </div> <div data-md-component=announce> </div> <header class=md-header data-md-component=header> <nav class="md-header-nav md-grid" aria-label=Header> <a href=https://kubernetes.github.io/ingress-nginx title="NGINX Ingress Controller" class="md-header-nav__button md-logo" aria-label="NGINX Ingress Controller"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 8a3 3 0 003-3 3 3 0 00-3-3 3 3 0 00-3 3 3 3 0 003 3m0 3.54C9.64 9.35 6.5 8 3 8v11c3.5 0 6.64 1.35 9 3.54 2.36-2.19 5.5-3.54 9-3.54V8c-3.5 0-6.64 1.35-9 3.54z"/></svg> </a> <label class="md-header-nav__button md-icon" for=__drawer> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M3 6h18v2H3V6m0 5h18v2H3v-2m0 5h18v2H3v-2z"/></svg> </label> <div class=md-header-nav__title data-md-component=header-title> <div class=md-header-nav__ellipsis> <div class=md-header-nav__topic> <span class=md-ellipsis> NGINX Ingress Controller 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class="md-nav__toggle md-toggle" data-md-toggle=nav-3 type=checkbox id=nav-3 checked> <label class=md-nav__link for=nav-3> User guide <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav aria-label="User guide" data-md-level=1> <label class=md-nav__title for=nav-3> <span class="md-nav__icon md-icon"></span> User guide </label> <ul class=md-nav__list data-md-scrollfix> <li class="md-nav__item md-nav__item--active md-nav__item--section md-nav__item--nested"> <input class="md-nav__toggle md-toggle" data-md-toggle=nav-3-1 type=checkbox id=nav-3-1 checked> <label class=md-nav__link for=nav-3-1> NGINX Configuration <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav aria-label="NGINX Configuration" data-md-level=2> <label class=md-nav__title for=nav-3-1> <span class="md-nav__icon md-icon"></span> NGINX Configuration </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../nginx-configuration/ class=md-nav__link> Introduction 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Examples </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../../examples/ class=md-nav__link> Introduction </a> </li> <li class=md-nav__item> <a href=../../examples/PREREQUISITES/ class=md-nav__link> Prerequisites </a> </li> <li class=md-nav__item> <a href=../../examples/affinity/cookie/ class=md-nav__link> Sticky Sessions </a> </li> <li class="md-nav__item md-nav__item--section md-nav__item--nested"> <input class="md-nav__toggle md-toggle" data-md-toggle=nav-4-4 type=checkbox id=nav-4-4> <label class=md-nav__link for=nav-4-4> Auth <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav aria-label=Auth data-md-level=2> <label class=md-nav__title for=nav-4-4> <span class="md-nav__icon md-icon"></span> Auth </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../../examples/auth/basic/ class=md-nav__link> Basic Authentication </a> </li> <li class=md-nav__item> <a href=../../examples/auth/client-certs/ class=md-nav__link> Client Certificate Authentication </a> </li> <li class=md-nav__item> <a href=../../examples/auth/external-auth/ class=md-nav__link> External Basic Authentication </a> </li> <li class=md-nav__item> <a href=../../examples/auth/oauth-external-auth/ class=md-nav__link> External OAUTH Authentication </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--section md-nav__item--nested"> <input class="md-nav__toggle md-toggle" data-md-toggle=nav-4-5 type=checkbox id=nav-4-5> <label class=md-nav__link for=nav-4-5> Customization <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav aria-label=Customization data-md-level=2> <label class=md-nav__title for=nav-4-5> <span class="md-nav__icon md-icon"></span> Customization </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../../examples/customization/configuration-snippets/ class=md-nav__link> Configuration Snippets </a> </li> <li class=md-nav__item> <a href=../../examples/customization/custom-configuration/ class=md-nav__link> Custom Configuration </a> </li> <li class=md-nav__item> <a href=../../examples/customization/custom-errors/ class=md-nav__link> Custom Errors </a> </li> <li class=md-nav__item> <a href=../../examples/customization/custom-headers/ class=md-nav__link> Custom Headers </a> </li> <li class=md-nav__item> <a href=../../examples/customization/external-auth-headers/ class=md-nav__link> External authentication </a> </li> <li class=md-nav__item> <a href=../../examples/customization/ssl-dh-param/ class=md-nav__link> Custom DH parameters for perfect forward secrecy </a> </li> <li class=md-nav__item> <a href=../../examples/customization/sysctl/ class=md-nav__link> Sysctl tuning </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=../../examples/docker-registry/ class=md-nav__link> Docker registry </a> </li> <li class=md-nav__item> <a href=../../examples/grpc/ class=md-nav__link> gRPC </a> </li> <li class=md-nav__item> <a href=../../examples/multi-tls/ class=md-nav__link> Multi TLS certificate termination </a> </li> <li class=md-nav__item> <a href=../../examples/rewrite/ class=md-nav__link> Rewrite </a> </li> <li class=md-nav__item> <a href=../../examples/static-ip/ class=md-nav__link> Static IPs </a> </li> <li class=md-nav__item> <a href=../../examples/tls-termination/ class=md-nav__link> TLS termination </a> </li> <li class=md-nav__item> <a href=../../examples/psp/ class=md-nav__link> Pod Security Policy (PSP) </a> </li> </ul> </nav> </li> <li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle" data-md-toggle=nav-5 type=checkbox id=nav-5> <label class=md-nav__link for=nav-5> Developer Guide <span class="md-nav__icon md-icon"></span> </label> <nav class=md-nav aria-label="Developer Guide" data-md-level=1> <label class=md-nav__title for=nav-5> <span class="md-nav__icon md-icon"></span> Developer Guide </label> <ul class=md-nav__list data-md-scrollfix> <li class=md-nav__item> <a href=../../developer-guide/getting-started/ class=md-nav__link> Getting Started </a> </li> <li class=md-nav__item> <a href=../../developer-guide/code-overview/ class=md-nav__link> Code Overview </a> </li> </ul> </nav> </li> </ul> </nav> </div> </div> </div> <div class="md-sidebar md-sidebar--secondary" data-md-component=toc> <div class=md-sidebar__scrollwrap> <div class=md-sidebar__inner> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> </nav> </div> </div> </div> <div class=md-content> <article class="md-content__inner md-typeset"> <a href=https://github.com/kubernetes/ingress-nginx/edit/master/docs/user-guide/basic-usage.md title="Edit this page" class="md-content__button md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25z"/></svg> </a> <h1 id=basic-usage-host-based-routing>Basic usage - host based routing<a class=headerlink href=#basic-usage-host-based-routing title="Permanent link"> ¶</a></h1> <p>ingress-nginx can be used for many use cases, inside various cloud provider and supports a lot of configurations. In this section you can find a common usage scenario where a single load balancer powered by ingress-nginx will route traffic to 2 different HTTP backend services based on the host name.</p> <p>First of all follow the instructions to install ingress-nginx. Then imagine that you need to expose 2 HTTP services already installed: <code>myServiceA</code>, <code>myServiceB</code>. Let's say that you want to expose the first at <code>myServiceA.foo.org</code> and the second at <code>myServiceB.foo.org</code>. One possible solution is to create two <strong>ingress</strong> resources:</p> <div class=highlight><pre><span></span><code>apiVersion: networking.k8s.io/v1
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kind: Ingress
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metadata:
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name: ingress-myservicea
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annotations:
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# use the shared ingress-nginx
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kubernetes.io/ingress.class: "nginx"
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spec:
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rules:
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- host: myservicea.foo.org
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http:
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paths:
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- path: /
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pathType: Prefix
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backend:
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service:
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name: myservicea
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port:
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number: 80
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---
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apiVersion: networking.k8s.io/v1
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kind: Ingress
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metadata:
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name: ingress-myserviceb
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annotations:
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# use the shared ingress-nginx
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kubernetes.io/ingress.class: "nginx"
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spec:
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rules:
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- host: myserviceb.foo.org
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http:
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paths:
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- path: /
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pathType: Prefix
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backend:
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service:
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name: myserviceb
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port:
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number: 80
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</code></pre></div> <p>When you apply this yaml, 2 ingress resources will be created managed by the <strong>ingress-nginx</strong> instance. Nginx is configured to automatically discover all ingress with the <code>kubernetes.io/ingress.class: "nginx"</code> annotation. Please note that the ingress resource should be placed inside the same namespace of the backend resource.</p> <p>If cluster version >= 1.19 the Ingress resource above will not work. You need to deploy the following so that it match the new api version. This will require changes to the Ingress objects as shown below, and a new object from type "kind: IngressClass" <div class=highlight><pre><span></span><code>apiVersion: networking.k8s.io/v1
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kind: Ingress
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metadata:
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name: ingress-myservicea
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spec:
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rules:
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- host: myservicea.foo.org
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http:
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paths:
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|
- path: /
|
|
pathType: Prefix
|
|
backend:
|
|
service:
|
|
name: myservicea
|
|
port:
|
|
number: 80
|
|
ingressClassName: nginx
|
|
---
|
|
apiVersion: networking.k8s.io/v1
|
|
kind: Ingress
|
|
metadata:
|
|
name: ingress-myserviceb
|
|
spec:
|
|
rules:
|
|
- host: myserviceb.foo.org
|
|
http:
|
|
paths:
|
|
- path: /
|
|
pathType: Prefix
|
|
backend:
|
|
service:
|
|
name: myserviceb
|
|
port:
|
|
number: 80
|
|
ingressClassName: nginx
|
|
---
|
|
apiVersion: networking.k8s.io/v1
|
|
kind: IngressClass
|
|
metadata:
|
|
name: nginx
|
|
spec:
|
|
controller: k8s.io/ingress-nginx
|
|
</code></pre></div></p> <p>On many cloud providers ingress-nginx will also create the corresponding Load Balancer resource. All you have to do is get the external IP and add a DNS <code>A record</code> inside your DNS provider that point myServiceA.foo.org and myServiceB.foo.org to the nginx external IP. Get the external IP by running:</p> <div class=highlight><pre><span></span><code>kubectl get services -n ingress-nginx
|
|
</code></pre></div> </article> </div> </div> </main> <footer class=md-footer> <div class=md-footer-nav> <nav class="md-footer-nav__inner md-grid" aria-label=Footer> <a href=../nginx-configuration/ class="md-footer-nav__link md-footer-nav__link--prev" rel=prev> <div class="md-footer-nav__button md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12z"/></svg> </div> <div class=md-footer-nav__title> <div class=md-ellipsis> <span class=md-footer-nav__direction> Previous </span> Introduction </div> </div> </a> <a href=../nginx-configuration/annotations/ class="md-footer-nav__link md-footer-nav__link--next" rel=next> <div class=md-footer-nav__title> <div class=md-ellipsis> <span class=md-footer-nav__direction> Next </span> Annotations </div> </div> <div class="md-footer-nav__button md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M4 11v2h12l-5.5 5.5 1.42 1.42L19.84 12l-7.92-7.92L10.5 5.5 16 11H4z"/></svg> </div> </a> </nav> </div> <div class="md-footer-meta md-typeset"> <div class="md-footer-meta__inner md-grid"> <div class=md-footer-copyright> Made with <a href=https://squidfunk.github.io/mkdocs-material/ target=_blank rel=noopener> Material for MkDocs </a> </div> </div> </div> </footer> </div> <script src=../../assets/javascripts/vendor.93c04032.min.js></script> <script src=../../assets/javascripts/bundle.83e5331e.min.js></script><script id=__lang type=application/json>{"clipboard.copy": "Copy to clipboard", "clipboard.copied": "Copied to clipboard", "search.config.lang": "en", "search.config.pipeline": "trimmer, stopWordFilter", "search.config.separator": "[\\s\\-]+", "search.placeholder": "Search", "search.result.placeholder": "Type to start searching", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.term.missing": "Missing"}</script> <script>
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