mirror of https://github.com/istio/istio.io.git
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role="tabpanel" aria-labelledby="header0"><div class="card-body"><ul class="tree"><li class="sublist"> <label class='tree-toggle'> <i class='fa fa-lg fa-caret-down'></i> <a class="" title="Frequently Asked Questions about Istio." href="/v0.7/help/faq">FAQ</a> </label><ul class="tree"><li> <a title="General Q&A" href="/v0.7/help/faq/general.html">General</a></li><li> <a title="Setup Q&A" href="/v0.7/help/faq/setup.html">Setup</a></li><li> <a title="Security Q&A" href="/v0.7/help/faq/security.html">Security</a></li><li> <a title="Mixer Q&A" href="/v0.7/help/faq/mixer.html">Mixer</a></li><li> <span class="current" title="Traffic Management Q&A">Traffic Management</span></li></ul></li><li> <a title="A glossary of common Istio terms." href="/v0.7/help/glossary.html">Glossary</a></li><li> <a title="What to do about bugs" href="/v0.7/help/bugs.html">Reporting Bugs</a></li><li> <a title="Practical advice on practical problems with Istio" href="/v0.7/help/troubleshooting.html">Troubleshooting Guide</a></li></ul></div></div></div></div></nav></div><div class="col-12 col-md-9 col-lg-6 col-xl-7"><p class="d-md-none"> <label class="sidebar-toggler" data-toggle="offcanvas"> <i class="fa fa-chevron-right"></i> </label></p><main role="main"><h1>Traffic Management</h1><h4 id="viewing-current-rules">Q: How can I view the current route rules I have configured with Istio?</h4><p>Rules can be viewed using <code class="highlighter-rouge">istioctl get routerules -o yaml</code> or <code class="highlighter-rouge">kubectl get routerules -o yaml</code>.</p><h4 id="weighted-rules-not-working">Q: Why is creating a weighted route rule to split traffic between two versions of a service not working as expected?</h4><p>For the current Envoy sidecar implementation, up to 100 requests may be required for the desired distribution to be observed.</p><h4 id="unreachable-services">Q: How come some of my services are unreachable after creating route rules?</h4><p>This is an known issue with the current Envoy sidecar implementation. After two seconds of creating the rule, services should become available.</p><h4 id="ingress-with-no-route-rules">Q: Can I use standard Ingress specification without any route rules?</h4><p>Simple ingress specifications, with host, TLS, and exact path based matches will work out of the box without the need for route rules. However, note that the path used in the ingress resource should not have any <code class="highlighter-rouge">.</code> characters.</p><p>For example, the following ingress resource matches requests for the example.com host, with /helloworld as the URL.</p><div class="language-bash highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nb">cat</span> <span class="o"><<</span><span class="no">EOF</span><span class="sh"> | kubectl create -f -
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apiVersion: extensions/v1beta1
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kind: Ingress
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metadata:
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name: simple-ingress
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annotations:
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kubernetes.io/ingress.class: istio
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spec:
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rules:
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- host: example.com
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http:
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paths:
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- path: /helloworld
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backend:
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serviceName: myservice
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servicePort: grpc
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</span><span class="no">EOF
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</span></code></pre></div></div><p>However, the following rules will not work because it uses regular expressions in the path and uses <code class="highlighter-rouge">ingress.kubernetes.io</code> annotations:</p><div class="language-bash highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nb">cat</span> <span class="o"><<</span><span class="no">EOF</span><span class="sh"> | kubectl create -f -
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apiVersion: extensions/v1beta1
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kind: Ingress
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metadata:
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name: this-will-not-work
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annotations:
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kubernetes.io/ingress.class: istio
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# Ingress annotations other than ingress class will not be honored
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ingress.kubernetes.io/rewrite-target: /
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spec:
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rules:
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- host: example.com
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http:
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paths:
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- path: /hello(.*?)world/
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backend:
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serviceName: myservice
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servicePort: grpc
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</span><span class="no">EOF
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</span></code></pre></div></div></main></div><div class="col-12 col-md-3 d-none d-lg-block"><nav class="toc"><div class="spacer"></div><div class="directory" role="directory"><ul><li><a href="#viewing-current-rules">Q: How can I view the current route rules I have configured with Istio?</a></li><li><a href="#weighted-rules-not-working">Q: Why is creating a weighted route rule to split traffic between two versions of a service not working as expected?</a></li><li><a href="#unreachable-services">Q: How come some of my services are unreachable after creating route rules?</a></li><li><a href="#ingress-with-no-route-rules">Q: Can I use standard Ingress specification without any route rules?</a></li></ul></div></nav></div></div></div><div class="footer"><footer><div class="container-fluid"><div class="row"><div class="col-6 col-lg-4" role="navigation"><div class="container-fluid"><div class="row justify-content-start"><div class="icon"> <a title="Join the istio-users@ mailing list to 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users</p></div></div></div><div class="col-6 col-lg-4"><p class="text-center copyright" role="contentinfo"> Istio Archive 0.7, Copyright © 2018 Istio Authors<br> Archived on 05-May-2018</p></div><div class="col-6 col-lg-4 d-none d-lg-flex" role="navigation"><div class="container-fluid"><div class="row justify-content-end"><div class="icon"> <a title="Join the istio-dev@ mailing list to discuss development issues around the Istio project" href="https://groups.google.com/forum/#!forum/istio-dev"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 490 490"><path d="M480,410.248H10c-5.523,0-10-4.477-10-10V89.752c0-5.523,4.477-10,10-10h470c5.522,0,10,4.477,10,10v310.495 C490,405.771,485.522,410.248,480,410.248z M20,390.248h450V99.752H20V390.248z"/><path d="M245,286.131c-2.083,0-4.167-0.649-5.931-1.948L48.64,143.929c-4.446-3.275-5.396-9.535-2.121-13.982 c3.275-4.447,9.535-5.396,13.982-2.121L245,263.712l184.5-135.886c4.447-3.274,10.709-2.326,13.982,2.121 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