mirror of https://github.com/istio/istio.io.git
47 lines
20 KiB
HTML
47 lines
20 KiB
HTML
<!DOCTYPE html><html lang="en" itemscope itemtype="https://schema.org/WebPage" style="overflow-y: scroll;"><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1"><meta name="title" content="Setting Request Timeouts"><meta name="og:title" content="Setting Request Timeouts"><meta name="og:image" content="/v0.4/img/logo.png"/><meta name="theme-color" content="#466BB0"/><meta name="description" content="This task shows you how to setup request timeouts in Envoy using Istio."><meta name="og:description" content="This task shows you how to setup request timeouts in Envoy using Istio."><title>Istioldie 0.4 / Setting Request Timeouts</title><script> window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date; ga('create', 'UA-98480406-2', 'auto'); ga('send', 'pageview'); </script> <script async src='https://www.google-analytics.com/analytics.js'></script><link rel="alternate" type="application/rss+xml" title="Istio Blog RSS" href="/v0.4/feed.xml"><link rel="shortcut icon" href="/v0.4/favicons/favicon.ico" ><link rel="apple-touch-icon" href="/v0.4/favicons/apple-touch-icon-180x180.png" sizes="180x180"><link rel="icon" type="image/png" href="/v0.4/favicons/favicon-16x16.png" sizes="16x16"><link rel="icon" type="image/png" href="/v0.4/favicons/favicon-32x32.png" sizes="32x32"><link rel="icon" type="image/png" href="/v0.4/favicons/android-36x36.png" sizes="36x36"><link rel="icon" type="image/png" href="/v0.4/favicons/android-48x48.png" sizes="48x48"><link rel="icon" type="image/png" href="/v0.4/favicons/android-72x72.png" sizes="72x72"><link rel="icon" type="image/png" href="/v0.4/favicons/android-96x196.png" sizes="96x196"><link rel="icon" type="image/png" href="/v0.4/favicons/android-144x144.png" sizes="144x144"><link rel="icon" type="image/png" href="/v0.4/favicons/android-192x192.png" sizes="192x192"><link rel="manifest" href="/v0.4/manifest.json"><meta name="apple-mobile-web-app-title" content="Istio"><meta name="application-name" content="Istio"><link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:400,100,100italic,300,300italic,400italic,500,500italic,700,700italic,900,900italic"><link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"><link rel="stylesheet" href="/v0.4/css/all.css"><link rel="stylesheet" href="/v0.4/css/prism.css"></head><body class="language-unknown"> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script><div class="nav-hero-container" style="z-index: 200000;"><nav id="header-nav" class="navbar navbar-inverse" role="navigation" style="z-index: 200000;"><div class="container"><div class="row"><div class="col-md-11 nofloat center-block "><div class="navbar-header"> <button type="button" class="hamburger navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar-collapse-1" aria-expanded="false"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> <a class="navbar-brand" href="/v0.4/"><div> <img src="/v0.4/img/istio-logo.svg" alt="Istio Logo" height="54px"/> <span class="brand-name">Istioldie 0.4</span></div></a></div><div class="collapse navbar-collapse" id="navbar-collapse-1"><ul class="nav navbar-nav navbar-right"><li><a href="/v0.4/about" >About</a></li><li><a href="/v0.4/blog/posts/2017/mixer-spof-myth.html" >Blog</a></li><li><a href="/v0.4/docs/welcome" class='current'>Docs</a></li><li><a href="/v0.4/help" >Help</a></li><li><a href="/v0.4/community" >Community</a></li><li class="dropdown"> <a class="dropdown-toggle" data-toggle="dropdown" href=""> <i class='fa fa-lg fa-cog'></i> <span class="caret"></span> </a><ul class="dropdown-menu"><h6 class="dropdown-header">Other versions of this site</h6><li> <a href="https://istio.io">Current Release</a></li><li> <a href="https://preliminary.istio.io">Next Release</a></li><li> <a href="https://archive.istio.io">Older Releases</a></li></ul></li><li><form name="cse" id="searchbox_demo" class="navbar-form navbar-right" role="search"> <input type="hidden" name="cx" value="013699703217164175118:iwwf17ikgf4" /> <input type="hidden" name="ie" value="utf-8" /> <input type="hidden" name="hl" value="en" /><div class="form-group"><div class="input-group"> <input name="q" class="form-control search-box" type="text" size="30" /><div class="input-group-addon"> <span class="btn-search glyphicon glyphicon-search"></span></div></div></div></form> <script type="text/javascript" src="https://www.google.com/cse/brand?form=searchbox_demo"></script></li></ul></div></div></div></div></nav></div><div class="container"><div class="row"><div class="col-md-11 nofloat center-block" style="margin-top: 3px;"><ul class="col-sm-10 nav nav-tabs"><li role="presentation" ><a href="/v0.4/docs/welcome/">Welcome</a></li><li role="presentation" ><a href="/v0.4/docs/concepts/">Concepts</a></li><li role="presentation" ><a href="/v0.4/docs/setup/">Setup</a></li><li role="presentation" class='active'><a href="/v0.4/docs/tasks/">Tasks</a></li><li role="presentation" ><a href="/v0.4/docs/guides/">Guides</a></li><li role="presentation" ><a href="/v0.4/docs/reference/">Reference</a></li></ul></div></div></div><script src="/v0.4/js/navtree.min.js"></script><div class="container docs"><div class="row"><div class="col-md-11 nofloat center-block"><div class="row"><div id="sidebar-container" class="col-sm-3"><ul class="sidebar"><li><h5 class='sidebar-title'>Tasks</h5></li><script type="text/javascript"> var docs = []; docs.push({path: [ "index.md", ], url: "/docs/tasks/", title: "Tasks", order: 20, overview: "Tasks show you how to do a single specific targeted activity with the Istio system."}); docs.push({path: [ "policy-enforcement", "index.md", ], url: "/docs/tasks/policy-enforcement/", title: "Policy Enforcement", order: 20, overview: "Describes tasks that demonstrate policy enforcement features."}); docs.push({path: [ "policy-enforcement", "rate-limiting.md", ], url: "/docs/tasks/policy-enforcement/rate-limiting.html", title: "Enabling Rate Limits", order: 10, overview: "This task shows you how to use Istio to dynamically limit the traffic to a service."}); docs.push({path: [ "security", "basic-access-control.md", ], url: "/docs/tasks/security/basic-access-control.html", title: "Setting up Basic Access Control", order: 20, overview: "This task shows how to control access to a service using the Kubernetes labels."}); docs.push({path: [ "security", "index.md", ], url: "/docs/tasks/security/", title: "Security", order: 40, overview: "Describes tasks that help securing the service mesh traffic."}); docs.push({path: [ "security", "mutual-tls.md", ], url: "/docs/tasks/security/mutual-tls.html", title: "Testing Istio mutual TLS authentication", order: 10, overview: "This task shows you how to verify and test Istio's automatic mutual TLS authentication."}); docs.push({path: [ "security", "per-service-mtls.md", ], url: "/docs/tasks/security/per-service-mtls.html", title: "Per-service mutual TLS authentication enablement", order: 40, overview: "This task shows how to change mutual TLS authentication for a single service."}); docs.push({path: [ "security", "plugin-ca-cert.md", ], url: "/docs/tasks/security/plugin-ca-cert.html", title: "Plugging in CA certificate and key", order: 40, overview: "This task shows how operators can plug existing certificate and key into Istio CA."}); docs.push({path: [ "security", "secure-access-control.md", ], url: "/docs/tasks/security/secure-access-control.html", title: "Setting up Secure Access Control", order: 30, overview: "This task shows how to securely control access to a service using service accounts."}); docs.push({path: [ "telemetry", "distributed-tracing.md", ], url: "/docs/tasks/telemetry/distributed-tracing.html", title: "Distributed Tracing", order: 10, overview: "How to configure the proxies to send tracing requests to Zipkin or Jaeger"}); docs.push({path: [ "telemetry", "index.md", ], url: "/docs/tasks/telemetry/", title: "Metrics, Logs, and Traces", order: 30, overview: "Describes tasks that demonstrate how to collect telemetry information from the service mesh."}); docs.push({path: [ "telemetry", "metrics-logs.md", ], url: "/docs/tasks/telemetry/metrics-logs.html", title: "Collecting Metrics and Logs", order: 20, overview: "This task shows you how to configure Istio to collect metrics and logs."}); docs.push({path: [ "telemetry", "querying-metrics.md", ], url: "/docs/tasks/telemetry/querying-metrics.html", title: "Querying Metrics from Prometheus", order: 30, overview: "This task shows you how to query for Istio Metrics using Prometheus."}); docs.push({path: [ "telemetry", "servicegraph.md", ], url: "/docs/tasks/telemetry/servicegraph.html", title: "Generating a Service Graph", order: 50, overview: "This task shows you how to generate a graph of services within an Istio mesh."}); docs.push({path: [ "telemetry", "tcp-metrics.md", ], url: "/docs/tasks/telemetry/tcp-metrics.html", title: "Collecting Metrics for TCP services", order: 25, overview: "This task shows you how to configure Istio to collect metrics for TCP services."}); docs.push({path: [ "telemetry", "using-istio-dashboard.md", ], url: "/docs/tasks/telemetry/using-istio-dashboard.html", title: "Visualizing Metrics with Grafana", order: 40, overview: "This task shows you how to setup and use the Istio Dashboard to monitor mesh traffic."}); docs.push({path: [ "traffic-management", "egress.md", ], url: "/docs/tasks/traffic-management/egress.html", title: "Control Egress Traffic", order: 40, overview: "Describes how to configure Istio to route traffic from services in the mesh to external services."}); docs.push({path: [ "traffic-management", "fault-injection.md", ], url: "/docs/tasks/traffic-management/fault-injection.html", title: "Fault Injection", order: 20, overview: "This task shows how to inject delays and test the resiliency of your application."}); docs.push({path: [ "traffic-management", "index.md", ], url: "/docs/tasks/traffic-management/", title: "Traffic Management", order: 10, overview: "Describes tasks that demonstrate traffic routing features of Istio service mesh."}); docs.push({path: [ "traffic-management", "ingress.md", ], url: "/docs/tasks/traffic-management/ingress.html", title: "Istio Ingress Controller", order: 30, overview: "Describes how to configure the Istio ingress controller on Kubernetes."}); docs.push({path: [ "traffic-management", "request-routing.md", ], url: "/docs/tasks/traffic-management/request-routing.html", title: "Configuring Request Routing", order: 10, overview: "This task shows you how to configure dynamic request routing based on weights and HTTP headers."}); docs.push({path: [ "traffic-management", "request-timeouts.md", ], url: "/docs/tasks/traffic-management/request-timeouts.html", title: "Setting Request Timeouts", order: 28, overview: "This task shows you how to setup request timeouts in Envoy using Istio."}); docs.push({path: [ "traffic-management", "traffic-shifting.md", ], url: "/docs/tasks/traffic-management/traffic-shifting.html", title: "Traffic Shifting", order: 25, overview: "This task shows you how to migrate traffic from an old to new version of a service."}); genSideBarTree(docs) </script></ul></div><div id="tab-container" class="col-xs-1 tab-neg-margin pull-left"> <a id="sidebar-tab" class="glyphicon glyphicon-chevron-left" href="javascript:void 0;"> </a></div><div id="content-container" class="thin-left-border col-sm-9 markdown"><div id="toc" class="toc"></div><div id="doc-content"><h1>Setting Request Timeouts</h1><p>This task shows you how to setup request timeouts in Envoy using Istio.</p><h2 id="before-you-begin">Before you begin</h2><ul><li><p>Setup Istio by following the instructions in the <a href="/v0.4/docs/setup/">Installation guide</a>.</p></li><li><p>Deploy the <a href="/v0.4/docs/guides/bookinfo.html">BookInfo</a> sample application.</p></li><li><p>Initialize the application version routing by running the following command:</p><pre><code class="language-bash">istioctl create -f samples/bookinfo/kube/route-rule-all-v1.yaml
|
||
</code></pre></li></ul><blockquote><p>Note: This task assumes you are deploying the application on Kubernetes. All of the example commands are using the Kubernetes version of the rule yaml files (e.g., <code>samples/bookinfo/kube/route-rule-all-v1.yaml</code>). If you are running this task in a different environment, change <code>kube</code> to the directory that corresponds to your runtime (e.g., <code>samples/bookinfo/consul/route-rule-all-v1.yaml</code> for the Consul-based runtime).</p></blockquote><h2 id="request-timeouts">Request timeouts</h2><p>A timeout for http requests can be specified using the <em>httpReqTimeout</em> field of a routing rule. By default, the timeout is 15 seconds, but in this task we’ll override the <code>reviews</code> service timeout to 1 second. To see its effect, however, we’ll also introduce an artificial 2 second delay in calls to the <code>ratings</code> service.</p><ol><li><p>Route requests to v2 of the <code>reviews</code> service, i.e., a version that calls the <code>ratings</code> service</p><pre><code class="language-bash">cat <<EOF | istioctl replace -f -
|
||
apiVersion: config.istio.io/v1alpha2
|
||
kind: RouteRule
|
||
metadata:
|
||
name: reviews-default
|
||
spec:
|
||
destination:
|
||
name: reviews
|
||
route:
|
||
- labels:
|
||
version: v2
|
||
EOF
|
||
</code></pre></li><li><p>Add a 2 second delay to calls to the <code>ratings</code> service:</p><pre><code class="language-bash">cat <<EOF | istioctl replace -f -
|
||
apiVersion: config.istio.io/v1alpha2
|
||
kind: RouteRule
|
||
metadata:
|
||
name: ratings-default
|
||
spec:
|
||
destination:
|
||
name: ratings
|
||
route:
|
||
- labels:
|
||
version: v1
|
||
httpFault:
|
||
delay:
|
||
percent: 100
|
||
fixedDelay: 2s
|
||
EOF
|
||
</code></pre></li><li><p>Open the BookInfo URL (http://$GATEWAY_URL/productpage) in your browser</p><p>You should see the BookInfo application working normally (with ratings stars displayed), but there is a 2 second delay whenever you refresh the page.</p></li><li><p>Now add a 1 second request timeout for calls to the <code>reviews</code> service</p><pre><code class="language-bash">cat <<EOF | istioctl replace -f -
|
||
apiVersion: config.istio.io/v1alpha2
|
||
kind: RouteRule
|
||
metadata:
|
||
name: reviews-default
|
||
spec:
|
||
destination:
|
||
name: reviews
|
||
route:
|
||
- labels:
|
||
version: v2
|
||
httpReqTimeout:
|
||
simpleTimeout:
|
||
timeout: 1s
|
||
EOF
|
||
</code></pre></li><li><p>Refresh the BookInfo web page</p><p>You should now see that it returns in 1 second (instead of 2), but the reviews are unavailable.</p></li></ol><h2 id="understanding-what-happened">Understanding what happened</h2><p>In this task, you used Istio to set the request timeout for calls to the <code>reviews</code> microservice to 1 second (instead of the default 15 seconds). Since the <code>reviews</code> service subsequently calls the <code>ratings</code> service when handling requests, you used Istio to inject a 2 second delay in calls to <code>ratings</code>, so that you would cause the <code>reviews</code> service to take longer than 1 second to complete and consequently you could see the timeout in action.</p><p>You observed that the BookInfo productpage (which calls the <code>reviews</code> service to populate the page), instead of displaying reviews, displayed the message: Sorry, product reviews are currently unavailable for this book. This was the result of it receiving the timeout error from the <code>reviews</code> service.</p><p>If you check out the <a href="./fault-injection.html">fault injection task</a>, you’ll find out that the <code>productpage</code> microservice also has its own application-level timeout (3 seconds) for calls to the <code>reviews</code> microservice. Notice that in this task we used an Istio route rule to set the timeout to 1 second. Had you instead set the timeout to something greater than 3 seconds (e.g., 4 seconds) the timeout would have had no effect since the more restrictive of the two will take precedence. More details can be found <a href="/v0.4/docs/concepts/traffic-management/handling-failures.html#faq">here</a>.</p><p>One more thing to note about timeouts in Istio is that in addition to overriding them in route rules, as you did in this task, they can also be overridden on a per-request basis if the application adds an “x-envoy-upstream-rq-timeout-ms” header on outbound requests. In the header the timeout is specified in millisecond (instead of second) units.</p><h2 id="cleanup">Cleanup</h2><ul><li><p>Remove the application routing rules.</p><pre><code class="language-bash">istioctl delete -f samples/bookinfo/kube/route-rule-all-v1.yaml
|
||
</code></pre></li><li><p>If you are not planning to explore any follow-on tasks, refer to the <a href="/v0.4/docs/guides/bookinfo.html#cleanup">BookInfo cleanup</a> instructions to shutdown the application.</p></li></ul><h2 id="further-reading">Further reading</h2><ul><li><p>Learn more about <a href="/v0.4/docs/concepts/traffic-management/handling-failures.html">failure handling</a>.</p></li><li><p>Learn more about <a href="/v0.4/docs/concepts/traffic-management/rules-configuration.html">routing rules</a>.</p></li></ul></div></div></div></div></div></div><script src="/v0.4/js/sidebar.min.js"></script><footer><div class="container"><div class="row"><div class="col-lg-2 col-md-2 col-sm-2"></div><div class="col-lg-3 col-md-3 col-sm-3 col-xs-12 center-block"><ul><li><a class="header" href="/v0.4/docs/welcome">Docs</a></li><li><a href="/v0.4/docs/concepts">Concepts</a></li><li><a href="/v0.4/docs/setup">Setup</a></li><li><a href="/v0.4/docs/tasks">Tasks</a></li><li><a href="/v0.4/docs/guides">Guides</a></li><li><a href="/v0.4/docs/reference">Reference</a></li></ul></div><div class="col-lg-3 col-md-3 col-sm-3 col-xs-12 center-block"><ul><li><a class="header" href="/v0.4/help">Help</a></li><li><a href="/v0.4/faq">FAQ</a></li><li><a href="/v0.4/glossary">Glossary</a></li><li><a href="/v0.4/troubleshooting">Troubleshooting</a></li><li><a href="/v0.4/bugs">Report Bugs</a></li><li><a href="https://github.com/istio/istio.github.io/issues/new?title=Issue with _docs/tasks/traffic-management/request-timeouts.md">Doc Bugs & Gaps</a></li><li><a href="https://github.com/istio/istio.github.io/edit/master/_docs/tasks/traffic-management/request-timeouts.md">Edit This Page</a></li></ul></div><div class="col-lg-3 col-md-3 col-sm-3 col-xs-12 center-block"><ul><li> <a class="header" href="/v0.4/community">Community</a></li><li> <a href="https://groups.google.com/forum/#!forum/istio-users" target="_blank" rel="noopener">User</a> | <a href="https://groups.google.com/forum/#!forum/istio-dev" target="_blank" rel="noopener">Dev Mailing Lists</a></li><li><a href="https://twitter.com/IstioMesh" target="_blank" rel="noopener">Twitter</a></li><li><a href="https://stackoverflow.com/questions/tagged/istio" target="_blank" rel="noopener">Stack Overflow</a></li><li><a href="https://github.com/istio/community" target="_blank" rel="noopener">GitHub</a></li><li><a href="https://github.com/istio/community/blob/master/WORKING-GROUPS.md" target="_blank" rel="noopener">Working Groups</a></li></ul></div><div class="col-lg-1 col-md-1 col-sm-1"></div></div><div class="row"><p class="description small text-center"> Istio 0.4, Copyright © 2017 Istio Authors<br> Archived on 20-Dec-2017</p></div></div></footer><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.15.0/jquery.validate.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.form/4.2.1/jquery.form.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-visible/1.2.0/jquery.visible.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.6.0/slick.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/1.7.1/clipboard.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> <script src="/v0.4/js/common.min.js"></script> <script src="/v0.4/js/search.js"></script> <script src="/v0.4/js/prism.min.js"></script></body></html>
|