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<button id=search-close title="Cancel search" type=reset aria-label="Cancel search"><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#cancel-x"/></svg></button></form></nav></header><main class="primary notoc"><div id=sidebar-container class="sidebar-container sidebar-offcanvas"><nav id=sidebar aria-label="Section Navigation"><div class=directory><div class=card><div id=header0 class=header title="Frequently Asked Questions about Istio."><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#faq"/></svg>FAQ</div><div class="body default" aria-labelledby=header0><ul role=tree aria-expanded=true class=leaf-section aria-labelledby=header0><li role=none><a role=treeitem title="General Q & A." href=/v1.3/faq/general/>General</a></li><li role=none><a role=treeitem title="Setup Q & A." href=/v1.3/faq/setup/>Setup</a></li><li role=none><a role=treeitem title="Security Q & A." href=/v1.3/faq/security/>Security</a></li><li role=none><a role=treeitem title="Mixer Q & A." href=/v1.3/faq/mixer/>Mixer</a></li><li role=none><a role=treeitem title="Metrics and Logs Q & A." href=/v1.3/faq/metrics-and-logs/>Metrics and Logs</a></li><li role=none><a role=treeitem title="Distributed Tracing Q & A." href=/v1.3/faq/distributed-tracing/>Distributed Tracing</a></li><li role=none><span role=treeitem class=current title="Traffic Management Q & A.">Traffic Management</span></li></ul></div></div></div></nav></div><div class=article-container><nav aria-label=Breadcrumb><ol><li><a href=/v1.3/ title="Connect, secure, control, and observe services.">Istio</a></li><li><a href=/v1.3/faq/ title="Frequently Asked Questions about Istio.">FAQ</a></li><li>Traffic Management</li></ol></nav><article aria-labelledby=title><div class=title-area><i class=title-icon><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#faq"/></svg></i><div><h1 id=title>Traffic Management FAQ</h1></div></div><nav class="toc-inlined toc-forced"><hr><div class=directory role=directory><nav id=InlineTableOfContents><ol><li role=none aria-label="How can I view the current route rules I have configured with Istio?"><a href=#viewing-current-rules>How can I view the current route rules I have configured with Istio?</a></li><li role=none aria-label="On what ports does a sidecar proxy capture inbound traffic?"><a href=#controlling-inbound-ports>On what ports does a sidecar proxy capture inbound traffic?</a></li><li role=none aria-label="Can I use standard Ingress specification without any route rules?"><a href=#ingress-with-no-route-rules>Can I use standard Ingress specification without any route rules?</a></li><li role=none aria-label="What protocols does Istio support?"><a href=#naming-port-convention>What protocols does Istio support?</a></li></ol></nav></div><hr></nav><div class=faq><h5 id=viewing-current-rules class=question>How can I view the current route rules I have configured with Istio?</h5><div class=answer><p>Rules can be viewed using <code>kubectl get virtualservice -o yaml</code></p></div><h5 id=controlling-inbound-ports class=question>On what ports does a sidecar proxy capture inbound traffic?</h5><div class=answer><p>Istio captures inbound traffic on all ports by default.
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You can override this behavior using the <code>traffic.sidecar.istio.io/includeInboundPorts</code> pod annotation
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to specify an explicit list of ports to capture, or using <code>traffic.sidecar.istio.io/excludeOutboundPorts</code>
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to specify a list of ports to bypass.</p></div><h5 id=ingress-with-no-route-rules class=question>Can I use standard Ingress specification without any route rules?</h5><div class=answer><p>Simple ingress specifications, with host, TLS, and exact path based
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matches will work out of the box without the need for route
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rules. However, note that the path used in the ingress resource should
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not have any <code>.</code> characters.</p><p>For example, the following ingress resource matches requests for the
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example.com host, with /helloworld as the URL.</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl create -f - <<EOF
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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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EOF
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</code></pre><p>However, the following rules will not work because they use regular
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expressions in the path and <code>ingress.kubernetes.io</code> annotations:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl create -f - <<EOF
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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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EOF
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</code></pre></div><h5 id=naming-port-convention class=question>What protocols does Istio support?</h5><div class=answer><p>Currently, Istio supports TCP based protocols. In additional to this, Istio provides additional functionality, such as routing and metrics, from other protocols such as <code>http</code> and <code>mysql</code>. Currently, UDP traffic is not supported.</p><p>For a list of all protocols, and information on how to configure protocols, view the <a href=/v1.3/docs/ops/traffic-management/protocol-selection/>Protocol Selection</a> documentation.</p></div></div></article><nav class=pagenav><div class=left><a title="Distributed Tracing Q & A." href=/v1.3/faq/distributed-tracing/><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#left-arrow"/></svg>Distributed Tracing</a></div><div class=right></div></nav><div id=endnotes-container aria-hidden=true><h2>Links</h2><ol id=endnotes></ol></div></div></main><footer><div class=user-links><a class=channel title="Go download Istio 1.3.5 now" href=/v1.3/docs/setup#downloading-the-release aria-label="Download Istio"><span>download</span><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#download"/></svg>
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</a><a class=channel title="Join the Istio discussion board to participate in discussions and get help troubleshooting problems" href=https://discuss.istio.io aria-label="Istio discussion board"><span>discuss</span><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#discourse"/></svg></a>
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1.3.5<br>© 2019 Istio Authors, <a href=https://policies.google.com/privacy>Privacy Policy</a><br>Archived on November 14, 2019</p></div><div class=dev-links><a class=channel title="GitHub is where development takes place on Istio code" href=https://github.com/istio/community aria-label=GitHub><span>github</span><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#github"/></svg></a>
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