1587 lines
No EOL
47 KiB
HTML
1587 lines
No EOL
47 KiB
HTML
|
|
|
|
|
|
<!doctype html>
|
|
<html lang="en" class="no-js">
|
|
<head>
|
|
|
|
<meta charset="utf-8">
|
|
<meta name="viewport" content="width=device-width,initial-scale=1">
|
|
|
|
|
|
<link rel="canonical" href="https://kubernetes.github.io/ingress-nginx/deploy/validating-webhook/">
|
|
|
|
|
|
<link rel="shortcut icon" href="../../assets/images/favicon.png">
|
|
<meta name="generator" content="mkdocs-1.1, mkdocs-material-5.1.0">
|
|
|
|
|
|
|
|
<title>Validating Webhook (admission controller) - NGINX Ingress Controller</title>
|
|
|
|
|
|
|
|
<link rel="stylesheet" href="../../assets/stylesheets/main.89dc9fe3.min.css">
|
|
|
|
<link rel="stylesheet" href="../../assets/stylesheets/palette.ecd4686e.min.css">
|
|
|
|
|
|
|
|
|
|
<meta name="theme-color" content="#009688">
|
|
|
|
|
|
|
|
|
|
|
|
<link href="https://fonts.gstatic.com" rel="preconnect" 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" href="../../extra.css">
|
|
|
|
|
|
|
|
|
|
<link rel="preconnect dns-prefetch" href="https://www.google-analytics.com">
|
|
<script>window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)},ga.l=+new Date,ga("create","UA-118407822-1","kubernetes.github.io"),ga("set","anonymizeIp",!0),ga("send","pageview"),document.addEventListener("DOMContentLoaded",function(){document.forms.search&&document.forms.search.query.addEventListener("blur",function(){if(this.value){var e=document.location.pathname;ga("send","pageview",e+"?q="+this.value)}})}),document.addEventListener("DOMContentSwitch",function(){ga("send","pageview")})</script>
|
|
<script async src="https://www.google-analytics.com/analytics.js"></script>
|
|
|
|
|
|
|
|
</head>
|
|
|
|
|
|
|
|
|
|
<body dir="ltr" data-md-color-primary="teal" data-md-color-accent="green">
|
|
|
|
<input class="md-toggle" data-md-toggle="drawer" type="checkbox" id="__drawer" autocomplete="off">
|
|
<input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off">
|
|
<label class="md-overlay" for="__drawer"></label>
|
|
<div data-md-component="skip">
|
|
|
|
|
|
<a href="#validating-webhook-admission-controller" 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 0,0 15,5A3,3 0 0,0 12,2A3,3 0 0,0 9,5A3,3 0 0,0 12,8M12,11.54C9.64,9.35 6.5,8 3,8V19C6.5,19 9.64,20.35 12,22.54C14.36,20.35 17.5,19 21,19V8C17.5,8 14.36,9.35 12,11.54Z" /></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="M3,6H21V8H3V6M3,11H21V13H3V11M3,16H21V18H3V16Z" /></svg>
|
|
</label>
|
|
<div class="md-header-nav__title" data-md-component="header-title">
|
|
|
|
<div class="md-header-nav__ellipsis">
|
|
<span class="md-header-nav__topic md-ellipsis">
|
|
NGINX Ingress Controller
|
|
</span>
|
|
<span class="md-header-nav__topic md-ellipsis">
|
|
|
|
Validating Webhook (admission controller)
|
|
|
|
</span>
|
|
</div>
|
|
|
|
</div>
|
|
|
|
<label class="md-header-nav__button md-icon" for="__search">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5,3A6.5,6.5 0 0,1 16,9.5C16,11.11 15.41,12.59 14.44,13.73L14.71,14H15.5L20.5,19L19,20.5L14,15.5V14.71L13.73,14.44C12.59,15.41 11.11,16 9.5,16A6.5,6.5 0 0,1 3,9.5A6.5,6.5 0 0,1 9.5,3M9.5,5C7,5 5,7 5,9.5C5,12 7,14 9.5,14C12,14 14,12 14,9.5C14,7 12,5 9.5,5Z" /></svg>
|
|
</label>
|
|
|
|
<div class="md-search" data-md-component="search" role="dialog">
|
|
<label class="md-search__overlay" for="__search"></label>
|
|
<div class="md-search__inner" role="search">
|
|
<form class="md-search__form" name="search">
|
|
<input type="text" class="md-search__input" name="query" aria-label="Search" placeholder="Search" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="search-query" data-md-state="active">
|
|
<label class="md-search__icon md-icon" for="__search">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5,3A6.5,6.5 0 0,1 16,9.5C16,11.11 15.41,12.59 14.44,13.73L14.71,14H15.5L20.5,19L19,20.5L14,15.5V14.71L13.73,14.44C12.59,15.41 11.11,16 9.5,16A6.5,6.5 0 0,1 3,9.5A6.5,6.5 0 0,1 9.5,3M9.5,5C7,5 5,7 5,9.5C5,12 7,14 9.5,14C12,14 14,12 14,9.5C14,7 12,5 9.5,5Z" /></svg>
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z" /></svg>
|
|
</label>
|
|
<button type="reset" class="md-search__icon md-icon" aria-label="Clear" data-md-component="search-reset" tabindex="-1">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M19,6.41L17.59,5L12,10.59L6.41,5L5,6.41L10.59,12L5,17.59L6.41,19L12,13.41L17.59,19L19,17.59L13.41,12L19,6.41Z" /></svg>
|
|
</button>
|
|
</form>
|
|
<div class="md-search__output">
|
|
<div class="md-search__scrollwrap" data-md-scrollfix>
|
|
<div class="md-search-result" data-md-component="search-result">
|
|
<div class="md-search-result__meta">
|
|
Type to start searching
|
|
</div>
|
|
<ol class="md-search-result__list"></ol>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
|
|
<div class="md-header-nav__source">
|
|
|
|
<a href="https://github.com/kubernetes/ingress-nginx/" title="Go to repository" class="md-source">
|
|
<div class="md-source__icon md-icon">
|
|
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M439.55 236.05L244 40.45a28.87 28.87 0 0 0-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 0 1-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 0 0 0 40.81l195.61 195.6a28.86 28.86 0 0 0 40.8 0l194.69-194.69a28.86 28.86 0 0 0 0-40.81z"/></svg>
|
|
</div>
|
|
<div class="md-source__repository">
|
|
kubernetes/ingress-nginx
|
|
</div>
|
|
</a>
|
|
</div>
|
|
|
|
</nav>
|
|
</header>
|
|
|
|
<div class="md-container" data-md-component="container">
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<nav class="md-tabs md-tabs--active" aria-label="Tabs" data-md-component="tabs">
|
|
<div class="md-tabs__inner md-grid">
|
|
<ul class="md-tabs__list">
|
|
|
|
|
|
|
|
|
|
<li class="md-tabs__item">
|
|
|
|
<a href="../.." class="md-tabs__link">
|
|
Welcome
|
|
</a>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-tabs__item">
|
|
|
|
<a href="../" class="md-tabs__link md-tabs__link--active">
|
|
Deployment
|
|
</a>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-tabs__item">
|
|
|
|
<a href="../../user-guide/nginx-configuration/" class="md-tabs__link">
|
|
User guide
|
|
</a>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-tabs__item">
|
|
|
|
<a href="../../examples/" class="md-tabs__link">
|
|
Examples
|
|
</a>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
</ul>
|
|
</div>
|
|
</nav>
|
|
|
|
|
|
<main class="md-main" data-md-component="main">
|
|
<div class="md-main__inner md-grid">
|
|
|
|
|
|
<div class="md-sidebar md-sidebar--primary" data-md-component="navigation">
|
|
<div class="md-sidebar__scrollwrap">
|
|
<div class="md-sidebar__inner">
|
|
<nav class="md-nav md-nav--primary" aria-label="Navigation" data-md-level="0">
|
|
<label class="md-nav__title" for="__drawer">
|
|
<a href="https://kubernetes.github.io/ingress-nginx" title="NGINX Ingress Controller" class="md-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 0,0 15,5A3,3 0 0,0 12,2A3,3 0 0,0 9,5A3,3 0 0,0 12,8M12,11.54C9.64,9.35 6.5,8 3,8V19C6.5,19 9.64,20.35 12,22.54C14.36,20.35 17.5,19 21,19V8C17.5,8 14.36,9.35 12,11.54Z" /></svg>
|
|
|
|
</a>
|
|
NGINX Ingress Controller
|
|
</label>
|
|
|
|
<div class="md-nav__source">
|
|
|
|
<a href="https://github.com/kubernetes/ingress-nginx/" title="Go to repository" class="md-source">
|
|
<div class="md-source__icon md-icon">
|
|
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M439.55 236.05L244 40.45a28.87 28.87 0 0 0-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 0 1-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 0 0 0 40.81l195.61 195.6a28.86 28.86 0 0 0 40.8 0l194.69-194.69a28.86 28.86 0 0 0 0-40.81z"/></svg>
|
|
</div>
|
|
<div class="md-source__repository">
|
|
kubernetes/ingress-nginx
|
|
</div>
|
|
</a>
|
|
</div>
|
|
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="nav-1" type="checkbox" id="nav-1">
|
|
|
|
<label class="md-nav__link" for="nav-1">
|
|
Welcome
|
|
<span class="md-nav__icon md-icon">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59,16.58L13.17,12L8.59,7.41L10,6L16,12L10,18L8.59,16.58Z" /></svg>
|
|
</span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="Welcome" data-md-level="1">
|
|
<label class="md-nav__title" for="nav-1">
|
|
<span class="md-nav__icon md-icon">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z" /></svg>
|
|
</span>
|
|
Welcome
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../.." title="Welcome" class="md-nav__link">
|
|
Welcome
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../how-it-works/" title="How it works" class="md-nav__link">
|
|
How it works
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../troubleshooting/" title="Troubleshooting" class="md-nav__link">
|
|
Troubleshooting
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../kubectl-plugin/" title="kubectl plugin" class="md-nav__link">
|
|
kubectl plugin
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../development/" title="Development" class="md-nav__link">
|
|
Development
|
|
</a>
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--active md-nav__item--nested">
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="nav-2" type="checkbox" id="nav-2" checked>
|
|
|
|
<label class="md-nav__link" for="nav-2">
|
|
Deployment
|
|
<span class="md-nav__icon md-icon">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59,16.58L13.17,12L8.59,7.41L10,6L16,12L10,18L8.59,16.58Z" /></svg>
|
|
</span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="Deployment" data-md-level="1">
|
|
<label class="md-nav__title" for="nav-2">
|
|
<span class="md-nav__icon md-icon">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z" /></svg>
|
|
</span>
|
|
Deployment
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../" title="Installation Guide" class="md-nav__link">
|
|
Installation Guide
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../baremetal/" title="Bare-metal considerations" class="md-nav__link">
|
|
Bare-metal considerations
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../rbac/" title="Role Based Access Control (RBAC)" class="md-nav__link">
|
|
Role Based Access Control (RBAC)
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--active">
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="toc" type="checkbox" id="__toc">
|
|
|
|
|
|
|
|
|
|
<label class="md-nav__link md-nav__link--active" for="__toc">
|
|
Validating Webhook (admission controller)
|
|
<span class="md-nav__icon md-icon">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M3,9H17V7H3V9M3,13H17V11H3V13M3,17H17V15H3V17M19,17H21V15H19V17M19,7V9H21V7H19M19,13H21V11H19V13Z" /></svg>
|
|
</span>
|
|
</label>
|
|
|
|
<a href="./" title="Validating Webhook (admission controller)" class="md-nav__link md-nav__link--active">
|
|
Validating Webhook (admission controller)
|
|
</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">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z" /></svg>
|
|
</span>
|
|
Table of contents
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#overview" class="md-nav__link">
|
|
Overview
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#configure-the-webhook" class="md-nav__link">
|
|
Configure the webhook
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="Configure the webhook">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#generate-the-webhook-certificate" class="md-nav__link">
|
|
Generate the webhook certificate
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="Generate the webhook certificate">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#self-signed-certificate" class="md-nav__link">
|
|
Self signed certificate
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="Self signed certificate">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#using-kubernetes-ca" class="md-nav__link">
|
|
Using Kubernetes CA
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#ingress-controller-flags" class="md-nav__link">
|
|
Ingress controller flags
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#kube-api-server-flags" class="md-nav__link">
|
|
kube API server flags
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#additional-kubernetes-objects" class="md-nav__link">
|
|
Additional kubernetes objects
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#using-helm" class="md-nav__link">
|
|
Using Helm
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../upgrade/" title="Upgrade" class="md-nav__link">
|
|
Upgrade
|
|
</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-3" type="checkbox" id="nav-3">
|
|
|
|
<label class="md-nav__link" for="nav-3">
|
|
User guide
|
|
<span class="md-nav__icon md-icon">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59,16.58L13.17,12L8.59,7.41L10,6L16,12L10,18L8.59,16.58Z" /></svg>
|
|
</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">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z" /></svg>
|
|
</span>
|
|
User guide
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="nav-3-1" type="checkbox" id="nav-3-1">
|
|
|
|
<label class="md-nav__link" for="nav-3-1">
|
|
NGINX Configuration
|
|
<span class="md-nav__icon md-icon">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59,16.58L13.17,12L8.59,7.41L10,6L16,12L10,18L8.59,16.58Z" /></svg>
|
|
</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">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z" /></svg>
|
|
</span>
|
|
NGINX Configuration
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/nginx-configuration/" title="Introduction" class="md-nav__link">
|
|
Introduction
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/basic-usage/" title="Basic usage" class="md-nav__link">
|
|
Basic usage
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/nginx-configuration/annotations/" title="Annotations" class="md-nav__link">
|
|
Annotations
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/nginx-configuration/configmap/" title="ConfigMap" class="md-nav__link">
|
|
ConfigMap
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/nginx-configuration/custom-template/" title="Custom NGINX template" class="md-nav__link">
|
|
Custom NGINX template
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/nginx-configuration/log-format/" title="Log format" class="md-nav__link">
|
|
Log format
|
|
</a>
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/cli-arguments/" title="Command line arguments" class="md-nav__link">
|
|
Command line arguments
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/custom-errors/" title="Custom errors" class="md-nav__link">
|
|
Custom errors
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/default-backend/" title="Default backend" class="md-nav__link">
|
|
Default backend
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/exposing-tcp-udp-services/" title="Exposing TCP and UDP services" class="md-nav__link">
|
|
Exposing TCP and UDP services
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/fcgi-services/" title="Exposing FCGI services" class="md-nav__link">
|
|
Exposing FCGI services
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/ingress-path-matching/" title="Regular expressions in paths" class="md-nav__link">
|
|
Regular expressions in paths
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/external-articles/" title="External Articles" class="md-nav__link">
|
|
External Articles
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/miscellaneous/" title="Miscellaneous" class="md-nav__link">
|
|
Miscellaneous
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/monitoring/" title="Prometheus and Grafana installation" class="md-nav__link">
|
|
Prometheus and Grafana installation
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/multiple-ingress/" title="Multiple Ingress controllers" class="md-nav__link">
|
|
Multiple Ingress controllers
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/tls/" title="TLS/HTTPS" class="md-nav__link">
|
|
TLS/HTTPS
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="nav-3-13" type="checkbox" id="nav-3-13">
|
|
|
|
<label class="md-nav__link" for="nav-3-13">
|
|
Third party addons
|
|
<span class="md-nav__icon md-icon">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59,16.58L13.17,12L8.59,7.41L10,6L16,12L10,18L8.59,16.58Z" /></svg>
|
|
</span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="Third party addons" data-md-level="2">
|
|
<label class="md-nav__title" for="nav-3-13">
|
|
<span class="md-nav__icon md-icon">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z" /></svg>
|
|
</span>
|
|
Third party addons
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/third-party-addons/modsecurity/" title="ModSecurity Web Application Firewall" class="md-nav__link">
|
|
ModSecurity Web Application Firewall
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../user-guide/third-party-addons/opentracing/" title="OpenTracing" class="md-nav__link">
|
|
OpenTracing
|
|
</a>
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="nav-4" type="checkbox" id="nav-4">
|
|
|
|
<label class="md-nav__link" for="nav-4">
|
|
Examples
|
|
<span class="md-nav__icon md-icon">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59,16.58L13.17,12L8.59,7.41L10,6L16,12L10,18L8.59,16.58Z" /></svg>
|
|
</span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="Examples" data-md-level="1">
|
|
<label class="md-nav__title" for="nav-4">
|
|
<span class="md-nav__icon md-icon">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z" /></svg>
|
|
</span>
|
|
Examples
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/" title="Introduction" class="md-nav__link">
|
|
Introduction
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/PREREQUISITES/" title="Prerequisites" class="md-nav__link">
|
|
Prerequisites
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/affinity/cookie/" title="Sticky Sessions" class="md-nav__link">
|
|
Sticky Sessions
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item 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">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59,16.58L13.17,12L8.59,7.41L10,6L16,12L10,18L8.59,16.58Z" /></svg>
|
|
</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">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z" /></svg>
|
|
</span>
|
|
Auth
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/auth/basic/" title="Basic Authentication" class="md-nav__link">
|
|
Basic Authentication
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/auth/client-certs/" title="Client Certificate Authentication" class="md-nav__link">
|
|
Client Certificate Authentication
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/auth/external-auth/" title="External Basic Authentication" class="md-nav__link">
|
|
External Basic Authentication
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/auth/oauth-external-auth/" title="External OAUTH Authentication" class="md-nav__link">
|
|
External OAUTH Authentication
|
|
</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-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">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8.59,16.58L13.17,12L8.59,7.41L10,6L16,12L10,18L8.59,16.58Z" /></svg>
|
|
</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">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z" /></svg>
|
|
</span>
|
|
Customization
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/customization/configuration-snippets/" title="Configuration Snippets" class="md-nav__link">
|
|
Configuration Snippets
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/customization/custom-configuration/" title="Custom Configuration" class="md-nav__link">
|
|
Custom Configuration
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/customization/custom-errors/" title="Custom Errors" class="md-nav__link">
|
|
Custom Errors
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/customization/custom-headers/" title="Custom Headers" class="md-nav__link">
|
|
Custom Headers
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/customization/external-auth-headers/" title="External authentication" class="md-nav__link">
|
|
External authentication
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/customization/ssl-dh-param/" title="Custom DH parameters for perfect forward secrecy" class="md-nav__link">
|
|
Custom DH parameters for perfect forward secrecy
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/customization/sysctl/" title="Sysctl tuning" class="md-nav__link">
|
|
Sysctl tuning
|
|
</a>
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/docker-registry/" title="Docker registry" class="md-nav__link">
|
|
Docker registry
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/grpc/" title="gRPC" class="md-nav__link">
|
|
gRPC
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/multi-tls/" title="Multi TLS certificate termination" class="md-nav__link">
|
|
Multi TLS certificate termination
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/rewrite/" title="Rewrite" class="md-nav__link">
|
|
Rewrite
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/static-ip/" title="Static IPs" class="md-nav__link">
|
|
Static IPs
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/tls-termination/" title="TLS termination" class="md-nav__link">
|
|
TLS termination
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../examples/psp/" title="Pod Security Policy (PSP)" class="md-nav__link">
|
|
Pod Security Policy (PSP)
|
|
</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">
|
|
|
|
|
|
|
|
|
|
|
|
<label class="md-nav__title" for="__toc">
|
|
<span class="md-nav__icon md-icon">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z" /></svg>
|
|
</span>
|
|
Table of contents
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#overview" class="md-nav__link">
|
|
Overview
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#configure-the-webhook" class="md-nav__link">
|
|
Configure the webhook
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="Configure the webhook">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#generate-the-webhook-certificate" class="md-nav__link">
|
|
Generate the webhook certificate
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="Generate the webhook certificate">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#self-signed-certificate" class="md-nav__link">
|
|
Self signed certificate
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="Self signed certificate">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#using-kubernetes-ca" class="md-nav__link">
|
|
Using Kubernetes CA
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#ingress-controller-flags" class="md-nav__link">
|
|
Ingress controller flags
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#kube-api-server-flags" class="md-nav__link">
|
|
kube API server flags
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#additional-kubernetes-objects" class="md-nav__link">
|
|
Additional kubernetes objects
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#using-helm" class="md-nav__link">
|
|
Using Helm
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
</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/deploy/validating-webhook.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="M20.71,7.04C21.1,6.65 21.1,6 20.71,5.63L18.37,3.29C18,2.9 17.35,2.9 16.96,3.29L15.12,5.12L18.87,8.87M3,17.25V21H6.75L17.81,9.93L14.06,6.18L3,17.25Z" /></svg>
|
|
</a>
|
|
|
|
|
|
|
|
|
|
|
|
<h1 id="validating-webhook-admission-controller">Validating webhook (admission controller)<a class="headerlink" href="#validating-webhook-admission-controller" title="Permanent link"> ¶</a></h1>
|
|
<h2 id="overview">Overview<a class="headerlink" href="#overview" title="Permanent link"> ¶</a></h2>
|
|
<p>Nginx ingress controller offers the option to validate ingresses before they enter the cluster, ensuring controller will generate a valid configuration.</p>
|
|
<p>This controller is called, when <a href="https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/#validatingadmissionwebhook">ValidatingAdmissionWebhook</a> is enabled, by the Kubernetes API server each time a new ingress is to enter the cluster, and rejects objects for which the generated nginx configuration fails to be validated.</p>
|
|
<p>This feature requires some further configuration of the cluster, hence it is an optional feature, this section explains how to enable it for your cluster.</p>
|
|
<h2 id="configure-the-webhook">Configure the webhook<a class="headerlink" href="#configure-the-webhook" title="Permanent link"> ¶</a></h2>
|
|
<h3 id="generate-the-webhook-certificate">Generate the webhook certificate<a class="headerlink" href="#generate-the-webhook-certificate" title="Permanent link"> ¶</a></h3>
|
|
<h4 id="self-signed-certificate">Self signed certificate<a class="headerlink" href="#self-signed-certificate" title="Permanent link"> ¶</a></h4>
|
|
<p>Validating webhook must be served using TLS, you need to generate a certificate. Note that kube API server is checking the hostname of the certificate, the common name of your certificate will need to match the service name.</p>
|
|
<div class="admonition example">
|
|
<p class="admonition-title">Example</p>
|
|
<p>To run the validating webhook with a service named <code>ingress-validation-webhook</code> in the namespace <code>ingress-nginx</code>, run</p>
|
|
<div class="highlight"><pre><span></span><code>openssl req -x509 -newkey rsa:2048 -keyout certificate.pem -out key.pem -days <span class="m">365</span> -nodes -subj <span class="s2">"/CN=ingress-validation-webhook.ingress-nginx.svc"</span>
|
|
</code></pre></div>
|
|
|
|
</div>
|
|
<h5 id="using-kubernetes-ca">Using Kubernetes CA<a class="headerlink" href="#using-kubernetes-ca" title="Permanent link"> ¶</a></h5>
|
|
<p>Kubernetes also provides primitives to sign a certificate request. Here is an example on how to use it</p>
|
|
<div class="admonition example">
|
|
<p class="admonition-title">Example</p>
|
|
<div class="highlight"><pre><span></span><code>#!/bin/bash
|
|
|
|
SERVICE_NAME=ingress-nginx
|
|
NAMESPACE=ingress-nginx
|
|
|
|
TEMP_DIRECTORY=$(mktemp -d)
|
|
echo "creating certs in directory ${TEMP_DIRECTORY}"
|
|
|
|
cat <<EOF >> ${TEMP_DIRECTORY}/csr.conf
|
|
[req]
|
|
req_extensions = v3_req
|
|
distinguished_name = req_distinguished_name
|
|
[req_distinguished_name]
|
|
[ v3_req ]
|
|
basicConstraints = CA:FALSE
|
|
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
|
|
extendedKeyUsage = serverAuth
|
|
subjectAltName = @alt_names
|
|
[alt_names]
|
|
DNS.1 = ${SERVICE_NAME}
|
|
DNS.2 = ${SERVICE_NAME}.${NAMESPACE}
|
|
DNS.3 = ${SERVICE_NAME}.${NAMESPACE}.svc
|
|
EOF
|
|
|
|
openssl genrsa -out ${TEMP_DIRECTORY}/server-key.pem 2048
|
|
openssl req -new -key ${TEMP_DIRECTORY}/server-key.pem \
|
|
-subj "/CN=${SERVICE_NAME}.${NAMESPACE}.svc" \
|
|
-out ${TEMP_DIRECTORY}/server.csr \
|
|
-config ${TEMP_DIRECTORY}/csr.conf
|
|
|
|
cat <<EOF | kubectl create -f -
|
|
apiVersion: certificates.k8s.io/v1beta1
|
|
kind: CertificateSigningRequest
|
|
metadata:
|
|
name: ${SERVICE_NAME}.${NAMESPACE}.svc
|
|
spec:
|
|
request: $(cat ${TEMP_DIRECTORY}/server.csr | base64 | tr -d '\n')
|
|
usages:
|
|
- digital signature
|
|
- key encipherment
|
|
- server auth
|
|
EOF
|
|
|
|
kubectl certificate approve ${SERVICE_NAME}.${NAMESPACE}.svc
|
|
|
|
for x in $(seq 10); do
|
|
SERVER_CERT=$(kubectl get csr ${SERVICE_NAME}.${NAMESPACE}.svc -o jsonpath='{.status.certificate}')
|
|
if [[ ${SERVER_CERT} != '' ]]; then
|
|
break
|
|
fi
|
|
sleep 1
|
|
done
|
|
if [[ ${SERVER_CERT} == '' ]]; then
|
|
echo "ERROR: After approving csr ${SERVICE_NAME}.${NAMESPACE}.svc, the signed certificate did not appear on the resource. Giving up after 10 attempts." >&2
|
|
exit 1
|
|
fi
|
|
echo ${SERVER_CERT} | openssl base64 -d -A -out ${TEMP_DIRECTORY}/server-cert.pem
|
|
|
|
kubectl create secret generic ingress-nginx.svc \
|
|
--from-file=key.pem=${TEMP_DIRECTORY}/server-key.pem \
|
|
--from-file=cert.pem=${TEMP_DIRECTORY}/server-cert.pem \
|
|
-n ${NAMESPACE}
|
|
</code></pre></div>
|
|
|
|
</div>
|
|
<h3 id="ingress-controller-flags">Ingress controller flags<a class="headerlink" href="#ingress-controller-flags" title="Permanent link"> ¶</a></h3>
|
|
<p>To enable the feature in the ingress controller, you <em>need</em> to provide 3 flags to the command line.</p>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th>flag</th>
|
|
<th>description</th>
|
|
<th>example usage</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td><code>--validating-webhook</code></td>
|
|
<td>The address to start an admission controller on</td>
|
|
<td><code>:8080</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>--validating-webhook-certificate</code></td>
|
|
<td>The certificate the webhook is using for its TLS handling</td>
|
|
<td><code>/usr/local/certificates/validating-webhook.pem</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>--validating-webhook-key</code></td>
|
|
<td>The key the webhook is using for its TLS handling</td>
|
|
<td><code>/usr/local/certificates/validating-webhook-key.pem</code></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<h3 id="kube-api-server-flags">kube API server flags<a class="headerlink" href="#kube-api-server-flags" title="Permanent link"> ¶</a></h3>
|
|
<p>Validating webhook feature requires specific setup on the kube API server side. Depending on your kubernetes version, the flag can, or not, be enabled by default.
|
|
To check that your kube API server runs with the required flags, please refer to the <a href="https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/#validatingadmissionwebhook">kubernetes</a> documentation.</p>
|
|
<h3 id="additional-kubernetes-objects">Additional kubernetes objects<a class="headerlink" href="#additional-kubernetes-objects" title="Permanent link"> ¶</a></h3>
|
|
<p>Once both the ingress controller and the kube API server are configured to serve the webhook, add the you can configure the webhook with the following objects:</p>
|
|
<div class="highlight"><pre><span></span><code><span class="nt">apiVersion</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">v1</span>
|
|
<span class="nt">kind</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">Service</span>
|
|
<span class="nt">metadata</span><span class="p">:</span>
|
|
<span class="nt">name</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">ingress-validation-webhook</span>
|
|
<span class="nt">namespace</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">ingress-nginx</span>
|
|
<span class="nt">spec</span><span class="p">:</span>
|
|
<span class="nt">ports</span><span class="p">:</span>
|
|
<span class="p p-Indicator">-</span> <span class="nt">name</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">admission</span>
|
|
<span class="nt">port</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">443</span>
|
|
<span class="nt">protocol</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">TCP</span>
|
|
<span class="nt">targetPort</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">8080</span>
|
|
<span class="nt">selector</span><span class="p">:</span>
|
|
<span class="nt">app</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">nginx-ingress</span>
|
|
<span class="nt">component</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">controller</span>
|
|
<span class="nn">---</span>
|
|
<span class="nt">apiVersion</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">admissionregistration.k8s.io/v1beta1</span>
|
|
<span class="nt">kind</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">ValidatingWebhookConfiguration</span>
|
|
<span class="nt">metadata</span><span class="p">:</span>
|
|
<span class="nt">name</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">check-ingress</span>
|
|
<span class="nt">webhooks</span><span class="p">:</span>
|
|
<span class="p p-Indicator">-</span> <span class="nt">name</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">validate.nginx.ingress.kubernetes.io</span>
|
|
<span class="nt">rules</span><span class="p">:</span>
|
|
<span class="p p-Indicator">-</span> <span class="nt">apiGroups</span><span class="p">:</span>
|
|
<span class="p p-Indicator">-</span> <span class="l l-Scalar l-Scalar-Plain">networking.k8s.io/v1beta1</span>
|
|
<span class="nt">apiVersions</span><span class="p">:</span>
|
|
<span class="p p-Indicator">-</span> <span class="l l-Scalar l-Scalar-Plain">v1beta1</span>
|
|
<span class="nt">operations</span><span class="p">:</span>
|
|
<span class="p p-Indicator">-</span> <span class="l l-Scalar l-Scalar-Plain">CREATE</span>
|
|
<span class="p p-Indicator">-</span> <span class="l l-Scalar l-Scalar-Plain">UPDATE</span>
|
|
<span class="nt">resources</span><span class="p">:</span>
|
|
<span class="p p-Indicator">-</span> <span class="l l-Scalar l-Scalar-Plain">ingresses</span>
|
|
<span class="nt">failurePolicy</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">Fail</span>
|
|
<span class="nt">clientConfig</span><span class="p">:</span>
|
|
<span class="nt">service</span><span class="p">:</span>
|
|
<span class="nt">namespace</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">ingress-nginx</span>
|
|
<span class="nt">name</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">ingress-validation-webhook</span>
|
|
<span class="nt">path</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain">/networking.k8s.io/v1beta1/ingress</span>
|
|
<span class="nt">caBundle</span><span class="p">:</span> <span class="l l-Scalar l-Scalar-Plain"><pem encoded ca cert that signs the server cert used by the webhook></span>
|
|
</code></pre></div>
|
|
|
|
<h3 id="using-helm">Using Helm<a class="headerlink" href="#using-helm" title="Permanent link"> ¶</a></h3>
|
|
<p>On nginx-ingress helm chart, set <code>controller.admissionWebhooks.enable</code> to <code>true</code> (default to <code>false</code>) to enabled Validating webhook.</p>
|
|
<p>With <code>controller.admissionWebhooks.patch.enabled</code> set to <code>true</code> (default value) a certificate will be automatically created and the CA added to ValidatingWebhookConfiguration.
|
|
For more details check <a href="https://github.com/helm/charts/tree/master/stable/nginx-ingress/templates/admission-webhooks/job-patch">here</a>.</p>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
</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="../rbac/" title="Role Based Access Control (RBAC)" 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="M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z" /></svg>
|
|
</div>
|
|
<div class="md-footer-nav__title">
|
|
<div class="md-ellipsis">
|
|
<span class="md-footer-nav__direction">
|
|
Previous
|
|
</span>
|
|
Role Based Access Control (RBAC)
|
|
</div>
|
|
</div>
|
|
</a>
|
|
|
|
|
|
<a href="../upgrade/" title="Upgrade" 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>
|
|
Upgrade
|
|
</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="M4,11V13H16L10.5,18.5L11.92,19.92L19.84,12L11.92,4.08L10.5,5.5L16,11H4Z" /></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.36cbf620.min.js"></script>
|
|
<script src="../../assets/javascripts/bundle.00c583dd.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.result.placeholder": "Type to start searching", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents"}</script>
|
|
|
|
<script>
|
|
app = initialize({
|
|
base: "../..",
|
|
features: ["tabs", "instant"],
|
|
search: Object.assign({
|
|
worker: "../../assets/javascripts/worker/search.7f7c8775.min.js"
|
|
}, typeof search !== "undefined" && search)
|
|
})
|
|
</script>
|
|
|
|
|
|
</body>
|
|
</html> |