58 lines
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58 lines
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HTML
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class=md-nav__link> Multi TLS certificate termination </a> </li> <li class=md-nav__item> <a href=../rewrite/ class=md-nav__link> Rewrite </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> Static IPs <span class="md-nav__icon md-icon"></span> </label> <a href=./ class="md-nav__link md-nav__link--active"> Static IPs </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-scrollfix> <li class=md-nav__item> <a href=#prerequisites class=md-nav__link> Prerequisites </a> </li> <li class=md-nav__item> <a href=#acquiring-an-ip class=md-nav__link> Acquiring an IP </a> </li> <li class=md-nav__item> <a href=#assigning-the-ip-to-an-ingress class=md-nav__link> Assigning the IP to an Ingress </a> </li> <li class=md-nav__item> <a href=#retaining-the-ip class=md-nav__link> Retaining the IP </a> </li> <li class=md-nav__item> <a href=#promote-ephemeral-to-static-ip class=md-nav__link> Promote ephemeral to static IP </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=../tls-termination/ class=md-nav__link> TLS termination </a> </li> <li class=md-nav__item> <a href=../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"> <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-scrollfix> <li class=md-nav__item> <a href=#prerequisites class=md-nav__link> Prerequisites </a> </li> <li class=md-nav__item> <a href=#acquiring-an-ip class=md-nav__link> Acquiring an IP </a> </li> <li class=md-nav__item> <a href=#assigning-the-ip-to-an-ingress class=md-nav__link> Assigning the IP to an Ingress </a> </li> <li class=md-nav__item> <a href=#retaining-the-ip class=md-nav__link> Retaining the IP </a> </li> <li class=md-nav__item> <a href=#promote-ephemeral-to-static-ip class=md-nav__link> Promote ephemeral to static IP </a> </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/examples/static-ip/README.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=static-ips>Static IPs<a class=headerlink href=#static-ips title="Permanent link"> ¶</a></h1> <p>This example demonstrates how to assign a static-ip to an Ingress on through the Nginx controller.</p> <h2 id=prerequisites>Prerequisites<a class=headerlink href=#prerequisites title="Permanent link"> ¶</a></h2> <p>You need a <a href=../PREREQUISITES/#tls-certificates>TLS cert</a> and a <a href=../PREREQUISITES/#test-http-service>test HTTP service</a> for this example. You will also need to make sure your Ingress targets exactly one Ingress controller by specifying the <a href=../../user-guide/multiple-ingress/ >ingress.class annotation</a>, and that you have an ingress controller <a href=../../deploy/ >running</a> in your cluster.</p> <h2 id=acquiring-an-ip>Acquiring an IP<a class=headerlink href=#acquiring-an-ip title="Permanent link"> ¶</a></h2> <p>Since instances of the nginx controller actually run on nodes in your cluster, by default nginx Ingresses will only get static IPs if your cloudprovider supports static IP assignments to nodes. On GKE/GCE for example, even though nodes get static IPs, the IPs are not retained across upgrade.</p> <p>To acquire a static IP for the ingress-nginx-controller, simply put it behind a Service of <code>Type=LoadBalancer</code>.</p> <p>First, create a loadbalancer Service and wait for it to acquire an IP</p> <div class=highlight><pre><span></span><code><span class=gp>$</span> kubectl create -f static-ip-svc.yaml
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<span class=go>service "ingress-nginx-lb" created</span>
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<span class=gp>$</span> kubectl get svc ingress-nginx-lb
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<span class=go>NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE</span>
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<span class=go>ingress-nginx-lb 10.0.138.113 104.154.109.191 80:31457/TCP,443:32240/TCP 15m</span>
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</code></pre></div> <p>then, update the ingress controller so it adopts the static IP of the Service by passing the <code>--publish-service</code> flag (the example yaml used in the next step already has it set to "ingress-nginx-lb").</p> <div class=highlight><pre><span></span><code><span class=gp>$</span> kubectl create -f ingress-nginx-controller.yaml
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<span class=go>deployment "ingress-nginx-controller" created</span>
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</code></pre></div> <h2 id=assigning-the-ip-to-an-ingress>Assigning the IP to an Ingress<a class=headerlink href=#assigning-the-ip-to-an-ingress title="Permanent link"> ¶</a></h2> <p>From here on every Ingress created with the <code>ingress.class</code> annotation set to <code>nginx</code> will get the IP allocated in the previous step</p> <div class=highlight><pre><span></span><code><span class=gp>$</span> kubectl create -f ingress-nginx.yaml
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<span class=go>ingress "ingress-nginx" created</span>
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<span class=gp>$</span> kubectl get ing ingress-nginx
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<span class=go>NAME HOSTS ADDRESS PORTS AGE</span>
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<span class=go>ingress-nginx * 104.154.109.191 80, 443 13m</span>
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<span class=gp>$</span> curl <span class=m>104</span>.154.109.191 -kL
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<span class=go>CLIENT VALUES:</span>
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<span class=go>client_address=10.180.1.25</span>
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<span class=go>command=GET</span>
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<span class=go>real path=/</span>
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<span class=go>query=nil</span>
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<span class=go>request_version=1.1</span>
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<span class=go>request_uri=http://104.154.109.191:8080/</span>
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<span class=go>...</span>
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</code></pre></div> <h2 id=retaining-the-ip>Retaining the IP<a class=headerlink href=#retaining-the-ip title="Permanent link"> ¶</a></h2> <p>You can test retention by deleting the Ingress</p> <div class=highlight><pre><span></span><code><span class=gp>$</span> kubectl delete ing ingress-nginx
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<span class=go>ingress "ingress-nginx" deleted</span>
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<span class=gp>$</span> kubectl create -f ingress-nginx.yaml
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<span class=go>ingress "ingress-nginx" created</span>
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<span class=gp>$</span> kubectl get ing ingress-nginx
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<span class=go>NAME HOSTS ADDRESS PORTS AGE</span>
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<span class=go>ingress-nginx * 104.154.109.191 80, 443 13m</span>
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</code></pre></div> <blockquote> <p>Note that unlike the GCE Ingress, the same loadbalancer IP is shared amongst all Ingresses, because all requests are proxied through the same set of nginx controllers.</p> </blockquote> <h2 id=promote-ephemeral-to-static-ip>Promote ephemeral to static IP<a class=headerlink href=#promote-ephemeral-to-static-ip title="Permanent link"> ¶</a></h2> <p>To promote the allocated IP to static, you can update the Service manifest</p> <div class=highlight><pre><span></span><code><span class=gp>$</span> kubectl patch svc ingress-nginx-lb -p <span class=s1>'{"spec": {"loadBalancerIP": "104.154.109.191"}}'</span>
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<span class=go>"ingress-nginx-lb" patched</span>
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</code></pre></div> <p>and promote the IP to static (promotion works differently for cloudproviders, provided example is for GKE/GCE) ` <div class=highlight><pre><span></span><code><span class=gp>$</span> gcloud compute addresses create ingress-nginx-lb --addresses <span class=m>104</span>.154.109.191 --region us-central1
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<span class=go>Created [https://www.googleapis.com/compute/v1/projects/kubernetesdev/regions/us-central1/addresses/ingress-nginx-lb].</span>
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<span class=go>---</span>
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<span class=go>address: 104.154.109.191</span>
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<span class=go>creationTimestamp: '2017-01-31T16:34:50.089-08:00'</span>
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<span class=go>description: ''</span>
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<span class=go>id: '5208037144487826373'</span>
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<span class=go>kind: compute#address</span>
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<span class=go>name: ingress-nginx-lb</span>
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<span class=go>region: us-central1</span>
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<span class=go>selfLink: https://www.googleapis.com/compute/v1/projects/kubernetesdev/regions/us-central1/addresses/ingress-nginx-lb</span>
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<span class=go>status: IN_USE</span>
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<span class=go>users:</span>
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<span class=go>- us-central1/forwardingRules/a09f6913ae80e11e6a8c542010af0000</span>
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</code></pre></div></p> <p>Now even if the Service is deleted, the IP will persist, so you can recreate the Service with <code>spec.loadBalancerIP</code> set to <code>104.154.109.191</code>.</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=../rewrite/ 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> Rewrite </div> </div> </a> <a href=../tls-termination/ 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> TLS termination </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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