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<a href=/v1.13/docs/setup/getting-started class="btn btn--primary" id=try-istio>Try Istio</a></div></div><form id=search-form class=search name=cse role=search><input type=hidden name=cx value=002184991200833970123:iwwf17ikgf4>
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<input type=hidden name=hl value=en>
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<input type=hidden id=search-page-url value=/search>
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<input id=search-textbox class="search-textbox form-control" name=q type=search aria-label="Search this site" placeholder=Search>
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<button id=search-close title="Cancel search" type=reset aria-label="Cancel search"><svg class="icon menu-close"><use xlink:href="/v1.13/img/icons.svg#menu-close"/></svg></button></form></nav></header><div class=banner-container></div><article class=post itemscope itemtype=http://schema.org/BlogPosting><div class=header-content><h1>Deploy a Custom Ingress Gateway Using Cert-Manager</h1><p>Describes how to deploy a custom ingress gateway using cert-manager manually.</p></div><p class=post-author>Jan 10, 2019 <span>|</span> By Julien Senon</p><div><p>This post provides instructions to manually create a custom ingress <a href=/v1.13/docs/reference/config/networking/gateway/>gateway</a> with automatic provisioning of certificates based on cert-manager.</p><p>The creation of custom ingress gateway could be used in order to have different <code>loadbalancer</code> in order to isolate traffic.</p><h2 id=before-you-begin>Before you begin</h2><ul><li>Set up Istio by following the instructions in the
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<a href=/v1.13/docs/setup/>Installation guide</a>.</li><li>Set up <code>cert-manager</code> with helm <a href=https://github.com/helm/charts/tree/master/stable/cert-manager#installing-the-chart>chart</a></li><li>We will use <code>demo.mydemo.com</code> for our example,
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it must be resolved with your DNS</li></ul><h2 id=configuring-the-custom-ingress-gateway>Configuring the custom ingress gateway</h2><ol><li><p>Check if <a href=https://github.com/helm/charts/tree/master/stable/cert-manager>cert-manager</a> was installed using Helm with the following command:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ helm ls
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</code></pre><p>The output should be similar to the example below and show cert-manager with a <code>STATUS</code> of <code>DEPLOYED</code>:</p><pre><code class=language-plain data-expandlinks=true data-repo=istio>NAME REVISION UPDATED STATUS CHART APP VERSION NAMESPACE
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istio 1 Thu Oct 11 13:34:24 2018 DEPLOYED istio-1.0.X 1.0.X istio-system
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cert 1 Wed Oct 24 14:08:36 2018 DEPLOYED cert-manager-v0.6.0-dev.2 v0.6.0-dev.2 istio-system
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</code></pre></li><li><p>To create the cluster’s issuer, apply the following configuration:</p><div><aside class="callout tip"><div class=type><svg class="large-icon"><use xlink:href="/v1.13/img/icons.svg#callout-tip"/></svg></div><div class=content>Change the cluster’s <a href=https://cert-manager.readthedocs.io/en/latest/reference/issuers.html>issuer</a> provider with your own configuration values. The example uses the values under <code>route53</code>.</div></aside></div><pre><code class=language-yaml data-expandlinks=true data-repo=istio>apiVersion: certmanager.k8s.io/v1alpha1
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kind: ClusterIssuer
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metadata:
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name: letsencrypt-demo
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namespace: kube-system
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spec:
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acme:
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# The ACME server URL
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server: https://acme-v02.api.letsencrypt.org/directory
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# Email address used for ACME registration
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email: <REDACTED>
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# Name of a secret used to store the ACME account private key
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privateKeySecretRef:
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name: letsencrypt-demo
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dns01:
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# Here we define a list of DNS-01 providers that can solve DNS challenges
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providers:
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- name: your-dns
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route53:
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accessKeyID: <REDACTED>
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region: eu-central-1
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secretAccessKeySecretRef:
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name: prod-route53-credentials-secret
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key: secret-access-key
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</code></pre></li><li><p>If you use the <code>route53</code> <a href=https://cert-manager.readthedocs.io/en/latest/tasks/acme/configuring-dns01/route53.html>provider</a>, you must provide a secret to perform DNS ACME Validation. To create the secret, apply the following configuration file:</p><pre><code class=language-yaml data-expandlinks=true data-repo=istio>apiVersion: v1
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kind: Secret
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metadata:
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name: prod-route53-credentials-secret
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type: Opaque
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data:
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secret-access-key: <REDACTED BASE64>
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</code></pre></li><li><p>Create your own certificate:</p><pre><code class=language-yaml data-expandlinks=true data-repo=istio>apiVersion: certmanager.k8s.io/v1alpha1
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kind: Certificate
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metadata:
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name: demo-certificate
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namespace: istio-system
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spec:
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acme:
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config:
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- dns01:
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provider: your-dns
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domains:
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- '*.mydemo.com'
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commonName: '*.mydemo.com'
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dnsNames:
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- '*.mydemo.com'
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issuerRef:
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kind: ClusterIssuer
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name: letsencrypt-demo
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secretName: istio-customingressgateway-certs
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</code></pre><p>Make a note of the value of <code>secretName</code> since a future step requires it.</p></li><li><p>To scale automatically, declare a new horizontal pod autoscaler with the following configuration:</p><pre><code class=language-yaml data-expandlinks=true data-repo=istio>apiVersion: autoscaling/v1
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kind: HorizontalPodAutoscaler
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metadata:
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name: my-ingressgateway
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namespace: istio-system
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spec:
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maxReplicas: 5
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minReplicas: 1
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scaleTargetRef:
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apiVersion: apps/v1beta1
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kind: Deployment
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name: my-ingressgateway
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targetCPUUtilizationPercentage: 80
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status:
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currentCPUUtilizationPercentage: 0
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currentReplicas: 1
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desiredReplicas: 1
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</code></pre></li><li><p>Apply your deployment with declaration provided in the <a href=/v1.13/blog/2019/custom-ingress-gateway/deployment-custom-ingress.yaml>yaml definition</a></p><div><aside class="callout tip"><div class=type><svg class="large-icon"><use xlink:href="/v1.13/img/icons.svg#callout-tip"/></svg></div><div class=content>The annotations used, for example <code>aws-load-balancer-type</code>, only apply for AWS.</div></aside></div></li><li><p>Create your service:</p><div><aside class="callout warning"><div class=type><svg class="large-icon"><use xlink:href="/v1.13/img/icons.svg#callout-warning"/></svg></div><div class=content>The <code>NodePort</code> used needs to be an available port.</div></aside></div><pre><code class=language-yaml data-expandlinks=true data-repo=istio>apiVersion: v1
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kind: Service
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metadata:
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name: my-ingressgateway
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annotations:
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service.beta.kubernetes.io/aws-load-balancer-type: nlb
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labels:
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app: my-ingressgateway
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istio: my-ingressgateway
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spec:
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type: LoadBalancer
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selector:
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app: my-ingressgateway
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istio: my-ingressgateway
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ports:
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-
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name: http2
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nodePort: 32380
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port: 80
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targetPort: 80
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-
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name: https
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nodePort: 32390
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port: 443
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-
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name: tcp
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nodePort: 32400
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port: 31400
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</code></pre></li><li><p>Create your Istio custom gateway configuration object:</p><pre><code class=language-yaml data-expandlinks=true data-repo=istio>apiVersion: networking.istio.io/v1alpha3
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kind: Gateway
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metadata:
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annotations:
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name: istio-custom-gateway
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namespace: default
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spec:
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selector:
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istio: my-ingressgateway
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servers:
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- hosts:
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- '*.mydemo.com'
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port:
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name: http
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number: 80
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protocol: HTTP
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tls:
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httpsRedirect: true
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- hosts:
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- '*.mydemo.com'
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port:
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name: https
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number: 443
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protocol: HTTPS
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tls:
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mode: SIMPLE
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privateKey: /etc/istio/ingressgateway-certs/tls.key
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serverCertificate: /etc/istio/ingressgateway-certs/tls.crt
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</code></pre></li><li><p>Link your <code>istio-custom-gateway</code> with your <code>VirtualService</code>:</p><pre><code class=language-yaml data-expandlinks=true data-repo=istio>apiVersion: networking.istio.io/v1alpha3
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kind: VirtualService
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metadata:
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name: my-virtualservice
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spec:
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hosts:
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- "demo.mydemo.com"
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gateways:
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- istio-custom-gateway
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http:
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- route:
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- destination:
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host: my-demoapp
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</code></pre></li><li><p>Correct certificate is returned by the server and it is successfully verified (<em>SSL certificate verify ok</em> is printed):</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ curl -v `https://demo.mydemo.com`
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Server certificate:
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SSL certificate verify ok.
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</code></pre></li></ol><p><strong>Congratulations!</strong> You can now use your custom <code>istio-custom-gateway</code> <a href=/v1.13/docs/reference/config/networking/gateway/>gateway</a> configuration object.</p></div><nav class=pagenav><div class=left><a title="Istio has a new discussion board." href=/v1.13/blog/2019/announcing-discuss.istio.io/ class=next-link><svg class="icon left-arrow"><use xlink:href="/v1.13/img/icons.svg#left-arrow"/></svg>Announcing discuss.istio.io</a></div><div class=right></div></nav></article><footer class=footer><div class="footer-wrapper container-l"><div class="user-links footer-links"><a class=channel title="GitHub is where development takes place on Istio code" href=https://github.com/istio/community aria-label=GitHub><svg class="icon github"><use xlink:href="/v1.13/img/icons.svg#github"/></svg></a><a class=channel title="Access our team drive if you'd like to take a look at the Istio technical design documents" 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