istio.io/archive/v1.3/docs/ops/troubleshooting/istioctl-describe/index.html

159 lines
73 KiB
HTML

<!doctype html><html lang=en itemscope itemtype=https://schema.org/WebPage><head><meta charset=utf-8><meta http-equiv=x-ua-compatible content="IE=edge"><meta name=viewport content="width=device-width,initial-scale=1,shrink-to-fit=no"><meta name=theme-color content=#466BB0><meta name=title content="Understand your Mesh with istioctl describe"><meta name=description content="Shows you how to use istioctl describe to verify the configurations of a pod in your mesh."><meta name=keywords content=microservices,services,mesh,traffic-management,istioctl,debugging,kubernetes><meta property=og:title content="Understand your Mesh with istioctl describe"><meta property=og:type content=website><meta property=og:description content="Shows you how to use istioctl describe to verify the configurations of a pod in your mesh."><meta property=og:url content=/v1.3/docs/ops/troubleshooting/istioctl-describe/><meta property=og:image content=/v1.3/img/istio-whitelogo-bluebackground-framed.svg><meta property=og:image:alt content="Istio Logo"><meta property=og:image:width content=112><meta property=og:image:height content=150><meta property=og:site_name content=Istio><meta name=twitter:card content=summary><meta name=twitter:site content=@IstioMesh><title>Istioldie 1.3 / Understand your Mesh with istioctl describe</title><script async src="https://www.googletagmanager.com/gtag/js?id=UA-98480406-2"></script><script>window.dataLayer=window.dataLayer||[];function gtag(){dataLayer.push(arguments);}
gtag('js',new Date());gtag('config','UA-98480406-2');</script><link rel=alternate type=application/rss+xml title="Istio Blog" href=/v1.3/blog/feed.xml><link rel=alternate type=application/rss+xml title="Istio News" href=/v1.3/news/feed.xml><link rel=alternate type=application/rss+xml title="Istio Blog and News" href=/v1.3/feed.xml><link rel="shortcut icon" href=/v1.3/favicons/favicon.ico><link rel=apple-touch-icon href=/v1.3/favicons/apple-touch-icon-180x180.png sizes=180x180><link rel=icon type=image/png href=/v1.3/favicons/favicon-16x16.png sizes=16x16><link rel=icon type=image/png href=/v1.3/favicons/favicon-32x32.png sizes=32x32><link rel=icon type=image/png href=/v1.3/favicons/android-36x36.png sizes=36x36><link rel=icon type=image/png href=/v1.3/favicons/android-48x48.png sizes=48x48><link rel=icon type=image/png href=/v1.3/favicons/android-72x72.png sizes=72x72><link rel=icon type=image/png href=/v1.3/favicons/android-96x96.png sizes=96xW96><link rel=icon type=image/png href=/v1.3/favicons/android-144x144.png sizes=144x144><link rel=icon type=image/png href=/v1.3/favicons/android-192x192.png sizes=192x192><link rel=manifest href=/v1.3/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=Work+Sans:400|Chivo:400|Work+Sans:500,300,600,300italic,400italic,500italic,600italic|Chivo:500,300,600,300italic,400italic,500italic,600italic"><link rel=stylesheet href=/v1.3/css/all.css><script src=/v1.3/js/themes_init.min.js></script></head><body class="language-unknown archive-site"><script>const branchName="release-1.3";const docTitle="Understand your Mesh with istioctl describe";const iconFile="\/v1.3/img/icons.svg";const buttonCopy='Copy to clipboard';const buttonPrint='Print';const buttonDownload='Download';</script><script src="https://www.google.com/cse/brand?form=search-form" defer></script><script src=/v1.3/js/all.min.js data-manual defer></script><header><nav><a id=brand href=/v1.3/><span class=logo><svg viewBox="0 0 300 300"><circle cx="150" cy="150" r="146" stroke-width="2" /><path d="M65 240H225L125 270z"/><path d="M65 230l60-10V110z"/><path d="M135 220l90 10L135 30z"/></svg></span><span class=name>Istioldie 1.3</span></a><div id=hamburger><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#hamburger"/></svg></div><div id=header-links><span title="Learn how to deploy, use, and operate Istio.">Docs</span>
<a title="Posts about using Istio." href=/v1.3/blog/2019/proxy/>Blog</a>
<a title="Timely news about the Istio project." href=/v1.3/news/2019/announcing-1.2-eol/>News</a>
<a title="Frequently Asked Questions about Istio." href=/v1.3/faq/>FAQ</a>
<a title="Get a bit more in-depth info about the Istio project." href=/v1.3/about/>About</a><div class=menu><button id=gearDropdownButton class=menu-trigger title="Options and settings" aria-label="Options and Settings" aria-controls=gearDropdownContent><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#gear"/></svg></button><div id=gearDropdownContent class=menu-content aria-labelledby=gearDropdownButton role=menu><a tabindex=-1 role=menuitem class=active id=light-theme-item>Light Theme</a>
<a tabindex=-1 role=menuitem id=dark-theme-item>Dark Theme</a><div role=separator></div><a tabindex=-1 role=menuitem id=syntax-coloring-item>Color Examples</a><div role=separator></div><h6>Other versions of this site</h6><a tabindex=-1 role=menuitem onclick="navigateToUrlOrRoot('https://istio.io/docs\/ops\/troubleshooting\/istioctl-describe\/');return false;">Current Release</a>
<a tabindex=-1 role=menuitem onclick="navigateToUrlOrRoot('https://preliminary.istio.io/docs\/ops\/troubleshooting\/istioctl-describe\/');return false;">Next Release</a>
<a tabindex=-1 role=menuitem href=https://archive.istio.io>Older Releases</a></div></div><button id=search-show title="Search this site" aria-label=Search><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#magnifier"/></svg></button></div><form id=search-form name=cse 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>
<input type=hidden id=search-page-url value=/v1.3/search>
<input id=search-textbox class=form-control name=q type=search aria-label="Search this site">
<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><div id=sidebar-container class="sidebar-container sidebar-offcanvas"><nav id=sidebar aria-label="Section Navigation"><div class=directory><div class=card><button class="header dynamic" id=card32 title="Learn about the different parts of the Istio system and the abstractions it uses." aria-controls=card32-body><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#concepts"/></svg>Concepts</button><div class=body aria-labelledby=card32 role=region id=card32-body><ul role=tree aria-expanded=true class=leaf-section aria-labelledby=card32><li role=none><a role=treeitem title="Introduces Istio, the problems it solves, its high-level architecture and design goals." href=/v1.3/docs/concepts/what-is-istio/>What is Istio?</a></li><li role=none><a role=treeitem title="Describes the various Istio features focused on traffic routing and control." href=/v1.3/docs/concepts/traffic-management/>Traffic Management</a></li><li role=none><a role=treeitem title="Describes Istio's authorization and authentication functionality." href=/v1.3/docs/concepts/security/>Policies and Security</a></li><li role=none><a role=treeitem title="Describes the telemetry and monitoring features provided by Istio." href=/v1.3/docs/concepts/observability/>Observability</a></li><li role=none><a role=treeitem title="Introduces performance and scalability for Istio." href=/v1.3/docs/concepts/performance-and-scalability/>Performance and Scalability</a></li><li role=none><a role=treeitem title="Describes the system models that impact your overall Istio depolyment." href=/v1.3/docs/concepts/deployment-models/>Deployment Models</a></li></ul></div></div><div class=card><button class="header dynamic" id=card49 title="Instructions for installing the Istio control plane on Kubernetes and adding virtual machines into the mesh." aria-controls=card49-body><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#setup"/></svg>Setup</button><div class=body aria-labelledby=card49 role=region id=card49-body><ul role=tree aria-expanded=true aria-labelledby=card49><li role=none><a role=treeitem title="Download, install, and try out Istio." href=/v1.3/docs/setup/getting-started/>Getting Started</a></li><li role=treeitem aria-label="Platform Setup"><button aria-hidden=true></button><a title="How to prepare various Kubernetes platforms before installing Istio." href=/v1.3/docs/setup/platform-setup/>Platform Setup</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Instructions to setup an Alibaba Cloud Kubernetes cluster for Istio." href=/v1.3/docs/setup/platform-setup/alicloud/>Alibaba Cloud</a></li><li role=none><a role=treeitem title="Instructions to setup an Azure cluster for Istio." href=/v1.3/docs/setup/platform-setup/azure/>Azure</a></li><li role=none><a role=treeitem title="Instructions to setup Docker Desktop for Istio." href=/v1.3/docs/setup/platform-setup/docker/>Docker Desktop</a></li><li role=none><a role=treeitem title="Instructions to setup a Google Kubernetes Engine cluster for Istio." href=/v1.3/docs/setup/platform-setup/gke/>Google Kubernetes Engine</a></li><li role=none><a role=treeitem title="Instructions to setup an IBM Cloud cluster for Istio." href=/v1.3/docs/setup/platform-setup/ibm/>IBM Cloud</a></li><li role=none><a role=treeitem title="Instructions to setup a Gardener cluster for Istio." href=/v1.3/docs/setup/platform-setup/gardener/>Kubernetes Gardener</a></li><li role=none><a role=treeitem title="Instructions to setup MicroK8s for use with Istio." href=/v1.3/docs/setup/platform-setup/microk8s/>MicroK8s</a></li><li role=none><a role=treeitem title="Instructions to setup minikube for Istio." href=/v1.3/docs/setup/platform-setup/minikube/>Minikube</a></li><li role=none><a role=treeitem title="Instructions to setup an OpenShift cluster for Istio." href=/v1.3/docs/setup/platform-setup/openshift/>OpenShift</a></li><li role=none><a role=treeitem title="Instructions to setup an OKE cluster for Istio." href=/v1.3/docs/setup/platform-setup/oci/>Oracle Cloud Infrastructure</a></li></ul></li><li role=treeitem aria-label=Install><button aria-hidden=true></button><a title="Choose the guide that best suits your needs and platform." href=/v1.3/docs/setup/install/>Install</a><ul role=group aria-expanded=false><li role=none><a role=treeitem title="Instructions to install Istio in a Kubernetes cluster for evaluation." href=/v1.3/docs/setup/install/kubernetes/>Quick Start Evaluation Install</a></li><li role=none><a role=treeitem title="Install and configure Istio for in-depth evaluation or production use." href=/v1.3/docs/setup/install/helm/>Customizable Install with Helm</a></li><li role=none><a role=treeitem title="Install and configure Istio using the Istio Operator CLI." href=/v1.3/docs/setup/install/operator/>Operator CLI-based Installation [Experimental]</a></li><li role=treeitem aria-label="Multi-cluster Installation"><button aria-hidden=true></button><a title="Configure an Istio mesh spanning multiple Kubernetes clusters." href=/v1.3/docs/setup/install/multicluster/>Multi-cluster Installation</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Install an Istio mesh across multiple Kubernetes clusters with replicated control plane instances." href=/v1.3/docs/setup/install/multicluster/gateways/>Replicated control planes</a></li><li role=none><a role=treeitem title="Install an Istio mesh across multiple Kubernetes clusters with a shared control plane and VPN connectivity between clusters." href=/v1.3/docs/setup/install/multicluster/shared-vpn/>Shared control plane (single-network)</a></li><li role=none><a role=treeitem title="Install an Istio mesh across multiple Kubernetes clusters using a shared control plane for disconnected cluster networks." href=/v1.3/docs/setup/install/multicluster/shared-gateways/>Shared control plane (multi-network)</a></li></ul></li></ul></li><li role=treeitem aria-label=Upgrade><button aria-hidden=true></button><a title="Information on upgrading Istio." href=/v1.3/docs/setup/upgrade/>Upgrade</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Important changes to consider when upgrading to Istio 1.3." href=/v1.3/docs/setup/upgrade/notice/>1.3 Upgrade Notice</a></li><li role=none><a role=treeitem title="Upgrade the Istio control plane and data plane independently." href=/v1.3/docs/setup/upgrade/steps/>Upgrade Steps</a></li></ul></li><li role=treeitem aria-label="More Guides"><button aria-hidden=true></button><a title="More information on additional setup tasks." href=/v1.3/docs/setup/additional-setup/>More Guides</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Prepare your Kubernetes pods and services to run in an Istio-enabled cluster." href=/v1.3/docs/setup/additional-setup/requirements/>Pods and Services</a></li><li role=none><a role=treeitem title="Describes the built-in Istio installation configuration profiles." href=/v1.3/docs/setup/additional-setup/config-profiles/>Installation Configuration Profiles</a></li><li role=none><a role=treeitem title="Install the Istio sidecar in application pods automatically using the sidecar injector webhook or manually using istioctl CLI." href=/v1.3/docs/setup/additional-setup/sidecar-injection/>Installing the Sidecar</a></li><li role=none><a role=treeitem title="Install and use Istio with the Istio CNI plugin, allowing operators to deploy services with lower privilege." href=/v1.3/docs/setup/additional-setup/cni/>Install Istio with the Istio CNI plugin</a></li></ul></li></ul></div></div><div class=card><button class="header dynamic" id=card72 title="How to do single specific targeted activities with the Istio system." aria-controls=card72-body><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#tasks"/></svg>Tasks</button><div class=body aria-labelledby=card72 role=region id=card72-body><ul role=tree aria-expanded=true aria-labelledby=card72><li role=treeitem aria-label="Traffic Management"><button aria-hidden=true></button><a title="Tasks that demonstrate Istio's traffic routing features." href=/v1.3/docs/tasks/traffic-management/>Traffic Management</a><ul role=group aria-expanded=false><li role=none><a role=treeitem title="This task shows you how to configure dynamic request routing to multiple versions of a microservice." href=/v1.3/docs/tasks/traffic-management/request-routing/>Request Routing</a></li><li role=none><a role=treeitem title="This task shows you how to inject faults to test the resiliency of your application." href=/v1.3/docs/tasks/traffic-management/fault-injection/>Fault Injection</a></li><li role=none><a role=treeitem title="Shows you how to migrate traffic from an old to new version of a service." href=/v1.3/docs/tasks/traffic-management/traffic-shifting/>Traffic Shifting</a></li><li role=none><a role=treeitem title="Shows you how to migrate TCP traffic from an old to new version of a TCP service." href=/v1.3/docs/tasks/traffic-management/tcp-traffic-shifting/>TCP Traffic Shifting</a></li><li role=none><a role=treeitem title="This task shows you how to setup request timeouts in Envoy using Istio." href=/v1.3/docs/tasks/traffic-management/request-timeouts/>Request Timeouts</a></li><li role=none><a role=treeitem title="This task shows you how to configure circuit breaking for connections, requests, and outlier detection." href=/v1.3/docs/tasks/traffic-management/circuit-breaking/>Circuit Breaking</a></li><li role=none><a role=treeitem title="This task demonstrates the traffic mirroring/shadowing capabilities of Istio." href=/v1.3/docs/tasks/traffic-management/mirroring/>Mirroring</a></li><li role=treeitem aria-label=Ingress><button aria-hidden=true></button><a title="Controlling ingress traffic for an Istio service mesh." href=/v1.3/docs/tasks/traffic-management/ingress/>Ingress</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Describes how to configure an Istio gateway to expose a service outside of the service mesh." href=/v1.3/docs/tasks/traffic-management/ingress/ingress-control/>Ingress Gateways</a></li><li role=none><a role=treeitem title="Expose a service outside of the service mesh over TLS or mTLS using file-mounted certificates." href=/v1.3/docs/tasks/traffic-management/ingress/secure-ingress-mount/>Secure Gateways (File Mount)</a></li><li role=none><a role=treeitem title="Expose a service outside of the service mesh over TLS or mTLS using the secret discovery service (SDS)." href=/v1.3/docs/tasks/traffic-management/ingress/secure-ingress-sds/>Secure Gateways (SDS)</a></li><li role=none><a role=treeitem title="Describes how to configure SNI passthrough for an ingress gateway." href=/v1.3/docs/tasks/traffic-management/ingress/ingress-sni-passthrough/>Ingress Gateway without TLS Termination</a></li><li role=none><a role=treeitem title="Demonstrates how to obtain Let's Encrypt TLS certificates for Kubernetes Ingress automatically using Cert-Manager." href=/v1.3/docs/tasks/traffic-management/ingress/ingress-certmgr/>Kubernetes Ingress with Cert-Manager</a></li></ul></li><li role=treeitem aria-label=Egress><button aria-hidden=true></button><a title="Controlling egress traffic for an Istio service mesh." href=/v1.3/docs/tasks/traffic-management/egress/>Egress</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Describes how to configure Istio to route traffic from services in the mesh to external services." href=/v1.3/docs/tasks/traffic-management/egress/egress-control/>Accessing External Services</a></li><li role=none><a role=treeitem title="Describes how to configure Istio to perform TLS origination for traffic to external services." href=/v1.3/docs/tasks/traffic-management/egress/egress-tls-origination/>Egress TLS Origination</a></li><li role=none><a role=treeitem title="Describes how to configure Istio to direct traffic to external services through a dedicated gateway." href=/v1.3/docs/tasks/traffic-management/egress/egress-gateway/>Egress Gateways</a></li><li role=none><a role=treeitem title="Describes how to configure an Egress Gateway to perform TLS origination to external services." href=/v1.3/docs/tasks/traffic-management/egress/egress-gateway-tls-origination/>Egress Gateways with TLS Origination</a></li><li role=none><a role=treeitem title="Describes how to enable egress traffic for a set of hosts in a common domain, instead of configuring each and every host separately." href=/v1.3/docs/tasks/traffic-management/egress/wildcard-egress-hosts/>Egress using Wildcard Hosts</a></li><li role=none><a role=treeitem title="Describes how to configure SNI monitoring and apply policies on TLS egress traffic." href=/v1.3/docs/tasks/traffic-management/egress/egress_sni_monitoring_and_policies/>Monitoring and Policies for TLS Egress</a></li><li role=none><a role=treeitem title="Describes how to configure Istio to let applications use an external HTTPS proxy." href=/v1.3/docs/tasks/traffic-management/egress/http-proxy/>Using an External HTTPS Proxy</a></li></ul></li></ul></li><li role=treeitem aria-label=Security><button aria-hidden=true></button><a title="Demonstrates how to secure the mesh." href=/v1.3/docs/tasks/security/>Security</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Shows you how to use Istio authentication policy to setup mutual TLS and basic end-user authentication." href=/v1.3/docs/tasks/security/authn-policy/>Authentication Policy</a></li><li role=none><a role=treeitem title="Shows how to set up role-based access control for HTTP services." href=/v1.3/docs/tasks/security/authz-http/>Authorization for HTTP Services</a></li><li role=none><a role=treeitem title="Shows how to set up role-based access control for TCP services." href=/v1.3/docs/tasks/security/authz-tcp/>Authorization for TCP Services</a></li><li role=none><a role=treeitem title="Tutorial on how to configure the groups-base authorization and configure the authorization of list-typed claims in Istio." href=/v1.3/docs/tasks/security/rbac-groups/>Authorization for groups and list claims</a></li><li role=none><a role=treeitem title="Shows how to use Authorization permissive mode." href=/v1.3/docs/tasks/security/authz-permissive/>Authorization permissive mode</a></li><li role=none><a role=treeitem title="Shows you how to verify and test Istio's automatic mutual TLS authentication." href=/v1.3/docs/tasks/security/mutual-tls/>Mutual TLS Deep-Dive</a></li><li role=none><a role=treeitem title="Shows how operators can configure Citadel with existing root certificate, signing certificate and key." href=/v1.3/docs/tasks/security/plugin-ca-cert/>Plugging in External CA Key and Certificate</a></li><li role=none><a role=treeitem title="Shows how to enable Citadel health checking with Kubernetes." href=/v1.3/docs/tasks/security/health-check/>Citadel Health Checking</a></li><li role=none><a role=treeitem title="Shows how to enable SDS (secret discovery service) for Istio identity provisioning." href=/v1.3/docs/tasks/security/auth-sds/>Provisioning Identity through SDS</a></li><li role=none><a role=treeitem title="Configure which namespaces Citadel should generate service account secrets for." href=/v1.3/docs/tasks/security/ca-namespace-targeting/>Configure Citadel Service Account Secret Generation</a></li><li role=none><a role=treeitem title="Shows you how to incrementally migrate your Istio services to mutual TLS." href=/v1.3/docs/tasks/security/mtls-migration/>Mutual TLS Migration</a></li><li role=none><a role=treeitem title="Shows how to enable mutual TLS on HTTPS services." href=/v1.3/docs/tasks/security/https-overlay/>Mutual TLS over HTTPS</a></li></ul></li><li role=treeitem aria-label=Policies><button aria-hidden=true></button><a title="Demonstrates policy enforcement features." href=/v1.3/docs/tasks/policy-enforcement/>Policies</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="This task shows you how to enable Istio policy enforcement." href=/v1.3/docs/tasks/policy-enforcement/enabling-policy/>Enabling Policy Enforcement</a></li><li role=none><a role=treeitem title="This task shows you how to use Istio to dynamically limit the traffic to a service." href=/v1.3/docs/tasks/policy-enforcement/rate-limiting/>Enabling Rate Limits</a></li><li role=none><a role=treeitem title="Shows how to modify request headers and routing using policy adapters." href=/v1.3/docs/tasks/policy-enforcement/control-headers/>Control Headers and Routing</a></li><li role=none><a role=treeitem title="Shows how to control access to a service using simple denials or white/black listing." href=/v1.3/docs/tasks/policy-enforcement/denial-and-list/>Denials and White/Black Listing</a></li></ul></li><li role=treeitem aria-label=Telemetry><button aria-hidden=true></button><a title="Demonstrates how to collect telemetry information from the mesh." href=/v1.3/docs/tasks/telemetry/>Telemetry</a><ul role=group aria-expanded=false><li role=treeitem aria-label=Metrics><button aria-hidden=true></button><a title="Demonstrates the configuration, collection, and processing of Istio mesh metrics." href=/v1.3/docs/tasks/telemetry/metrics/>Metrics</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="This task shows you how to configure Istio to collect and customize metrics." href=/v1.3/docs/tasks/telemetry/metrics/collecting-metrics/>Collecting Metrics</a></li><li role=none><a role=treeitem title="This task shows you how to configure Istio to collect metrics for TCP services." href=/v1.3/docs/tasks/telemetry/metrics/tcp-metrics/>Collecting Metrics for TCP services</a></li><li role=none><a role=treeitem title="This task shows you how to query for Istio Metrics using Prometheus." href=/v1.3/docs/tasks/telemetry/metrics/querying-metrics/>Querying Metrics from Prometheus</a></li><li role=none><a role=treeitem title="This task shows you how to setup and use the Istio Dashboard to monitor mesh traffic." href=/v1.3/docs/tasks/telemetry/metrics/using-istio-dashboard/>Visualizing Metrics with Grafana</a></li></ul></li><li role=treeitem aria-label=Logs><button aria-hidden=true></button><a title="Demonstrates the configuration, collection, and processing of Istio mesh logs." href=/v1.3/docs/tasks/telemetry/logs/>Logs</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="This task shows you how to configure Istio to collect and customize logs." href=/v1.3/docs/tasks/telemetry/logs/collecting-logs/>Collecting Logs</a></li><li role=none><a role=treeitem title="This task shows you how to configure Envoy proxies to print access log to their standard output." href=/v1.3/docs/tasks/telemetry/logs/access-log/>Getting Envoy&#39;s Access Logs</a></li><li role=none><a role=treeitem title="This task shows you how to configure Istio to log to a Fluentd daemon." href=/v1.3/docs/tasks/telemetry/logs/fluentd/>Logging with Fluentd</a></li></ul></li><li role=treeitem aria-label="Distributed Tracing"><button aria-hidden=true></button><a title="This task shows you how to configure Istio-enabled applications to collect trace spans." href=/v1.3/docs/tasks/telemetry/distributed-tracing/>Distributed Tracing</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Overview of distributed tracing in Istio." href=/v1.3/docs/tasks/telemetry/distributed-tracing/overview/>Overview</a></li><li role=none><a role=treeitem title="Learn how to configure the proxies to send tracing requests to Jaeger." href=/v1.3/docs/tasks/telemetry/distributed-tracing/jaeger/>Jaeger</a></li><li role=none><a role=treeitem title="Learn how to configure the proxies to send tracing requests to Zipkin." href=/v1.3/docs/tasks/telemetry/distributed-tracing/zipkin/>Zipkin</a></li><li role=none><a role=treeitem title="How to configure the proxies to send tracing requests to LightStep." href=/v1.3/docs/tasks/telemetry/distributed-tracing/lightstep/>LightStep</a></li></ul></li><li role=none><a role=treeitem title="This task shows you how to visualize your services within an Istio mesh." href=/v1.3/docs/tasks/telemetry/kiali/>Visualizing Your Mesh</a></li><li role=none><a role=treeitem title="This task shows you how to configure external access to the set of Istio telemetry addons." href=/v1.3/docs/tasks/telemetry/gateways/>Remotely Accessing Telemetry Addons</a></li></ul></li></ul></div></div><div class=card><button class="header dynamic" id=card90 title="A variety of fully working example uses for Istio that you can experiment with." aria-controls=card90-body><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#examples"/></svg>Examples</button><div class=body aria-labelledby=card90 role=region id=card90-body><ul role=tree aria-expanded=true aria-labelledby=card90><li role=none><a role=treeitem title="Deploys a sample application composed of four separate microservices used to demonstrate various Istio features." href=/v1.3/docs/examples/bookinfo/>Bookinfo Application</a></li><li role=none><a role=treeitem title="Explains how to manually integrate Google Cloud Endpoints services with Istio." href=/v1.3/docs/examples/endpoints/>Install Istio for Google Cloud Endpoints Services</a></li><li role=treeitem aria-label="Mesh Expansion"><button aria-hidden=true></button><a title="Configure an Istio mesh spanning Kubernetes clusters, VMs and bare metals." href=/v1.3/docs/examples/mesh-expansion/>Mesh Expansion</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Integrate VMs and bare metal hosts into an Istio mesh deployed on Kubernetes." href=/v1.3/docs/examples/mesh-expansion/single-network/>Single-network Mesh Expansion</a></li><li role=none><a role=treeitem title="Integrate VMs and bare metal hosts into an Istio mesh deployed on Kubernetes with gateways." href=/v1.3/docs/examples/mesh-expansion/multi-network/>Multi-network Mesh Expansion</a></li><li role=none><a role=treeitem title="Illustrates how to expand the Bookinfo application's mesh with a raw VM service." href=/v1.3/docs/examples/mesh-expansion/bookinfo-expanded/>Bookinfo with Mesh Expansion</a></li></ul></li><li role=treeitem aria-label="Multicluster Service Mesh"><button aria-hidden=true></button><a title="Multicluster service mesh examples for Istio that you can experiment with." href=/v1.3/docs/examples/multicluster/>Multicluster Service Mesh</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Set up a multicluster mesh over two GKE clusters." href=/v1.3/docs/examples/multicluster/gke/>Google Kubernetes Engine</a></li><li role=none><a role=treeitem title="Example multicluster mesh over two IBM Cloud Private clusters." href=/v1.3/docs/examples/multicluster/icp/>IBM Cloud Private</a></li></ul></li></ul></div></div><div class=card><button class="header dynamic" id=card104 title="Hints, tips, tricks about running an Istio mesh." aria-controls=card104-body><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#guide"/></svg>Operations</button><div class="body default" aria-labelledby=card104 role=region id=card104-body><ul role=tree aria-expanded=true aria-labelledby=card104><li role=none><a role=treeitem title="Shows how to do health checking for Istio services." href=/v1.3/docs/ops/app-health-check/>Health Checking of Istio Services</a></li><li role=treeitem aria-label="Installation and Configuration"><button aria-hidden=true></button><a title="Describes important requirements, concepts, and considerations for installing and configuring Istio." href=/v1.3/docs/ops/setup/>Installation and Configuration</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Describes Istio's use of Kubernetes webhooks for automatic sidecar injection." href=/v1.3/docs/ops/setup/injection-concepts/>Automatic Sidecar Injection</a></li><li role=none><a role=treeitem title="Describes how to check which capabilities are allowed for your pods." href=/v1.3/docs/ops/setup/required-pod-capabilities/>Required Pod Capabilities</a></li><li role=none><a role=treeitem title="Provides a general overview of Istio's use of Kubernetes webhooks and the related issues that can arise." href=/v1.3/docs/ops/setup/webhook/>Dynamic Admission Webhooks Overview</a></li><li role=none><a role=treeitem title="Describes Istio's use of Kubernetes webhooks for server-side configuration validation." href=/v1.3/docs/ops/setup/validation/>Configuration Validation Webhook</a></li></ul></li><li role=treeitem aria-label="Traffic Management"><button aria-hidden=true></button><a title="Helps you manage the networking aspects of a running mesh." href=/v1.3/docs/ops/traffic-management/>Traffic Management</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="An introduction to Istio networking operational aspects." href=/v1.3/docs/ops/traffic-management/introduction/>Introduction to Network Operations</a></li><li role=none><a role=treeitem title="Provides specific deployment or configuration guidelines to avoid networking or traffic management issues." href=/v1.3/docs/ops/traffic-management/deploy-guidelines/>Avoiding Traffic Management Issues</a></li><li role=none><a role=treeitem title="Information on how to enable and understand Locality Load Balancing." href=/v1.3/docs/ops/traffic-management/locality-load-balancing/>Locality Load Balancing</a></li><li role=none><a role=treeitem title="Information on how to specify protocols." href=/v1.3/docs/ops/traffic-management/protocol-selection/>Protocol Selection</a></li></ul></li><li role=treeitem aria-label=Security><button aria-hidden=true></button><a title="Helps you manage the security aspects of a running mesh." href=/v1.3/docs/ops/security/>Security</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Use hardened container images to reduce Istio's attack surface." href=/v1.3/docs/ops/security/harden-docker-images/>Harden Docker Container Images</a></li><li role=none><a role=treeitem title="Learn how to extend the lifetime of the Istio self-signed root certificate." href=/v1.3/docs/ops/security/root-transition/>Extending Self-Signed Certificate Lifetime</a></li></ul></li><li role=treeitem aria-label=Telemetry><button aria-hidden=true></button><a title="Helps you manage telemetry collection and visualization in a running mesh." href=/v1.3/docs/ops/telemetry/>Telemetry</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="How to enable in-proxy generation of HTTP service-level metrics." href=/v1.3/docs/ops/telemetry/in-proxy-service-telemetry/>Generate Istio Metrics Without Mixer [Experimental]</a></li><li role=none><a role=treeitem title="Fine-grained control of Envoy statistics." href=/v1.3/docs/ops/telemetry/envoy-stats/>Envoy Statistics</a></li></ul></li><li role=treeitem aria-label=Troubleshooting><button class=show aria-hidden=true></button><a title="Describes how to identify and resolve common problems in Istio." href=/v1.3/docs/ops/troubleshooting/>Troubleshooting</a><ul role=group aria-expanded=true class=leaf-section><li role=none><a role=treeitem title="Istio includes a supplemental tool that provides debugging and diagnosis for Istio service mesh deployments." href=/v1.3/docs/ops/troubleshooting/istioctl/>Using the istioctl command-line tool</a></li><li role=none><a role=treeitem title="Tools and techniques to address common Istio traffic management and network problems." href=/v1.3/docs/ops/troubleshooting/network-issues/>Network Problems</a></li><li role=none><a role=treeitem title="Tools and techniques to address common Istio authentication, authorization, and general security-related problems." href=/v1.3/docs/ops/troubleshooting/security-issues/>Security Problems</a></li><li role=none><a role=treeitem title="Resolve common problems with Istio's use of Kubernetes webhooks for automatic sidecar injection." href=/v1.3/docs/ops/troubleshooting/injection/>Sidecar Injection Problems</a></li><li role=none><a role=treeitem title="What to do if Citadel is not behaving properly." href=/v1.3/docs/ops/troubleshooting/repairing-citadel/>Repairing Citadel</a></li><li role=none><a role=treeitem title="Describes tools and techniques to diagnose Envoy configuration issues related to traffic management." href=/v1.3/docs/ops/troubleshooting/proxy-cmd/>Debugging Envoy and Pilot</a></li><li role=none><a role=treeitem title="Describes how to resolve Galley configuration problems." href=/v1.3/docs/ops/troubleshooting/validation/>Galley Configuration Problems</a></li><li role=none><a role=treeitem title="Diagnose problems where metrics are not being collected." href=/v1.3/docs/ops/troubleshooting/missing-metrics/>Missing Metrics</a></li><li role=none><a role=treeitem title="Dealing with Grafana issues." href=/v1.3/docs/ops/troubleshooting/grafana/>Missing Grafana Output</a></li><li role=none><a role=treeitem title="Fix missing traces in Zipkin." href=/v1.3/docs/ops/troubleshooting/missing-traces/>Missing Zipkin Traces</a></li><li role=none><span role=treeitem class=current title="Shows you how to use istioctl describe to verify the configurations of a pod in your mesh.">Understand your Mesh with istioctl describe</span></li><li role=none><a role=treeitem title="Describes how to use component-level logging to get insights into a running component's behavior." href=/v1.3/docs/ops/troubleshooting/component-logging/>Component Logging</a></li><li role=none><a role=treeitem title="Describes how to use ControlZ to get insight into individual running components." href=/v1.3/docs/ops/troubleshooting/controlz/>Component Introspection</a></li><li role=none><a role=treeitem title="Limitations for using Tcpdump in pods." href=/v1.3/docs/ops/troubleshooting/tcpdump-notes/>Tcpdump Limitations</a></li></ul></li></ul></div></div><div class=card><button class="header dynamic" id=card126 title="Detailed authoritative reference material such as command-line options, configuration options, and API calling parameters." aria-controls=card126-body><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#reference"/></svg>Reference</button><div class=body aria-labelledby=card126 role=region id=card126-body><ul role=tree aria-expanded=true aria-labelledby=card126><li role=treeitem aria-label=Configuration><button aria-hidden=true></button><a title="Detailed information on configuration options." href=/v1.3/docs/reference/config/>Configuration</a><ul role=group aria-expanded=false><li role=treeitem aria-label="Traffic Management"><button aria-hidden=true></button><a title="Describes how to configure HTTP/TCP routing features." href=/v1.3/docs/reference/config/networking/>Traffic Management</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Configuration affecting load balancing, outlier detection, etc." href=/v1.3/docs/reference/config/networking/v1alpha3/destination-rule/>Destination Rule</a></li><li role=none><a role=treeitem title="Customizing Envoy configuration generated by Istio." href=/v1.3/docs/reference/config/networking/v1alpha3/envoy-filter/>Envoy Filter</a></li><li role=none><a role=treeitem title="Configuration affecting edge load balancer." href=/v1.3/docs/reference/config/networking/v1alpha3/gateway/>Gateway</a></li><li role=none><a role=treeitem title="Configuration affecting service registry." href=/v1.3/docs/reference/config/networking/v1alpha3/service-entry/>Service Entry</a></li><li role=none><a role=treeitem title="Configuration affecting network reachability of a sidecar." href=/v1.3/docs/reference/config/networking/v1alpha3/sidecar/>Sidecar</a></li><li role=none><a role=treeitem title="Configuration affecting label/content routing, sni routing, etc." href=/v1.3/docs/reference/config/networking/v1alpha3/virtual-service/>Virtual Service</a></li></ul></li><li role=none><a role=treeitem title="Authentication policy for Istio services." href=/v1.3/docs/reference/config/istio.authentication.v1alpha1/>Authentication Policy</a></li><li role=none><a role=treeitem title="Resource annotations used by Istio." href=/v1.3/docs/reference/config/annotations/>Resource Annotations</a></li><li role=treeitem aria-label=Authorization><button aria-hidden=true></button><a title="Describes how to configure Istio's authorization features." href=/v1.3/docs/reference/config/authorization/>Authorization</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Describes the supported constraints and properties." href=/v1.3/docs/reference/config/authorization/constraints-and-properties/>Constraints and Properties</a></li><li role=none><a role=treeitem title="Configuration for Role Based Access Control." href=/v1.3/docs/reference/config/authorization/istio.rbac.v1alpha1/>RBAC</a></li></ul></li><li role=none><a role=treeitem title="Describes the options available when installing Istio using the included Helm chart." href=/v1.3/docs/reference/config/installation-options/>Installation Options</a></li><li role=none><a role=treeitem title="Details the Helm chart installation options differences between release-1.2 and release-1.3." href=/v1.3/docs/reference/config/installation-options-changes/>Installation Options Changes</a></li><li role=treeitem aria-label="Policies and Telemetry"><button aria-hidden=true></button><a title="Describes how to configure Istio's policy and telemetry features." href=/v1.3/docs/reference/config/policy-and-telemetry/>Policies and Telemetry</a><ul role=group aria-expanded=false><li role=none><a role=treeitem title="Describes the configuration model for Istio's policy enforcement and telemetry mechanisms." href=/v1.3/docs/reference/config/policy-and-telemetry/mixer-overview/>Mixer Configuration Model</a></li><li role=none><a role=treeitem title="Describes the base attribute vocabulary used for policy and control." href=/v1.3/docs/reference/config/policy-and-telemetry/attribute-vocabulary/>Attribute Vocabulary</a></li><li role=none><a role=treeitem title="Mixer configuration expression language reference." href=/v1.3/docs/reference/config/policy-and-telemetry/expression-language/>Expression Language</a></li><li role=treeitem aria-label=Adapters><button aria-hidden=true></button><a title="Mixer adapters allow Istio to interface to a variety of infrastructure backends for such things as metrics and logs." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/>Adapters</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Adapter to deliver metrics to Apache SkyWalking." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/apache-skywalking/>Apache SkyWalking</a></li><li role=none><a role=treeitem title="Adapter for Apigee's distributed policy checks and analytics." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/apigee/>Apigee</a></li><li role=none><a role=treeitem title="Adapter to enforce authentication and authorization policies for web apps and APIs." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/app-identity-access-adapter/>App Identity and Access</a></li><li role=none><a role=treeitem title="Adapter for circonus.com's monitoring solution." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/circonus/>Circonus</a></li><li role=none><a role=treeitem title="Adapter for cloudmonitor metrics." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/cloudmonitor/>CloudMonitor</a></li><li role=none><a role=treeitem title="Adapter for cloudwatch metrics." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/cloudwatch/>CloudWatch</a></li><li role=none><a role=treeitem title="Adapter to deliver metrics to a dogstatsd agent for delivery to DataDog." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/datadog/>Datadog</a></li><li role=none><a role=treeitem title="Adapter that always returns a precondition denial." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/denier/>Denier</a></li><li role=none><a role=treeitem title="Adapter that delivers logs to a Fluentd daemon." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/fluentd/>Fluentd</a></li><li role=none><a role=treeitem title="Adapter that extracts information from a Kubernetes environment." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/kubernetesenv/>Kubernetes Env</a></li><li role=none><a role=treeitem title="Adapter that performs whitelist or blacklist checks." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/list/>List</a></li><li role=none><a role=treeitem title="Adapter for a simple in-memory quota management system." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/memquota/>Memory quota</a></li><li role=none><a role=treeitem title="Adapter that implements an Open Policy Agent engine." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/opa/>OPA</a></li><li role=none><a role=treeitem title="Adapter that exposes Istio metrics for ingestion by a Prometheus harvester." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/prometheus/>Prometheus</a></li><li role=none><a role=treeitem title="Adapter for a Redis-based quota management system." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/redisquota/>Redis Quota</a></li><li role=none><a role=treeitem title="Adapter that sends metrics to SignalFx." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/signalfx/>SignalFx</a></li><li role=none><a role=treeitem title="Adapter to deliver logs and metrics to Papertrail and AppOptics backends." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/solarwinds/>SolarWinds</a></li><li role=none><a role=treeitem title="Adapter to deliver logs, metrics, and traces to Stackdriver." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/stackdriver/>Stackdriver</a></li><li role=none><a role=treeitem title="Adapter to deliver metrics to a StatsD backend." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/statsd/>StatsD</a></li><li role=none><a role=treeitem title="Adapter to locally output logs and metrics." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/stdio/>Stdio</a></li><li role=none><a role=treeitem title="Adapter to deliver metrics to Wavefront by VMware." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/wavefront/>Wavefront by VMware</a></li><li role=none><a role=treeitem title="Adapter to deliver tracing data to Zipkin." href=/v1.3/docs/reference/config/policy-and-telemetry/adapters/zipkin/>Zipkin</a></li></ul></li><li role=none><a role=treeitem title="Default Metrics exported from Istio through Mixer." href=/v1.3/docs/reference/config/policy-and-telemetry/metrics/>Default Metrics</a></li><li role=treeitem aria-label=Templates><button aria-hidden=true></button><a title="Mixer templates are used to send data to individual adapters." href=/v1.3/docs/reference/config/policy-and-telemetry/templates/>Templates</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="A template that represents a single API key." href=/v1.3/docs/reference/config/policy-and-telemetry/templates/apikey/>API Key</a></li><li role=none><a role=treeitem title="The Analytics template is used to dispatch runtime telemetry to Apigee." href=/v1.3/docs/reference/config/policy-and-telemetry/templates/analytics/>Analytics</a></li><li role=none><a role=treeitem title="A template used to represent an access control query." href=/v1.3/docs/reference/config/policy-and-telemetry/templates/authorization/>Authorization</a></li><li role=none><a role=treeitem title="A template that carries no data, useful for testing." href=/v1.3/docs/reference/config/policy-and-telemetry/templates/checknothing/>Check Nothing</a></li><li role=none><a role=treeitem title="A template designed to report observed communication edges between workloads." href=/v1.3/docs/reference/config/policy-and-telemetry/templates/edge/>Edge</a></li><li role=none><a role=treeitem title="A template that is used to control the production of Kubernetes-specific attributes." href=/v1.3/docs/reference/config/policy-and-telemetry/templates/kubernetes/>Kubernetes</a></li><li role=none><a role=treeitem title="A template designed to let you perform list checking operations." href=/v1.3/docs/reference/config/policy-and-telemetry/templates/listentry/>List Entry</a></li><li role=none><a role=treeitem title="A template that represents a single runtime log entry." href=/v1.3/docs/reference/config/policy-and-telemetry/templates/logentry/>Log Entry</a></li><li role=none><a role=treeitem title="A template that represents a single runtime metric." href=/v1.3/docs/reference/config/policy-and-telemetry/templates/metric/>Metric</a></li><li role=none><a role=treeitem title="A template that represents a quota allocation request." href=/v1.3/docs/reference/config/policy-and-telemetry/templates/quota/>Quota</a></li><li role=none><a role=treeitem title="A template that carries no data, useful for testing." href=/v1.3/docs/reference/config/policy-and-telemetry/templates/reportnothing/>Report Nothing</a></li><li role=none><a role=treeitem title="A template that represents an individual span within a distributed trace." href=/v1.3/docs/reference/config/policy-and-telemetry/templates/tracespan/>Trace Span</a></li></ul></li><li role=none><a role=treeitem title="Configuration state for the Mixer client library." href=/v1.3/docs/reference/config/policy-and-telemetry/istio.mixer.v1.config.client/>Mixer Client</a></li><li role=none><a role=treeitem title="Describes the rules used to configure Mixer's policy and telemetry features." href=/v1.3/docs/reference/config/policy-and-telemetry/istio.policy.v1beta1/>Rules</a></li></ul></li><li role=none><a role=treeitem title="Configuration for Istio control plane installation through the Operator." href=/v1.3/docs/reference/config/istio.operator.v1alpha12.pb/>Operator Installation</a></li><li role=none><a role=treeitem title="Configuration affecting the service mesh as a whole." href=/v1.3/docs/reference/config/istio.mesh.v1alpha1/>Service Mesh</a></li></ul></li><li role=treeitem aria-label=Commands><button aria-hidden=true></button><a title="Describes usage and options of the Istio commands and utilities." href=/v1.3/docs/reference/commands/>Commands</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Galley provides configuration management services for Istio." href=/v1.3/docs/reference/commands/galley/>galley</a></li><li role=none><a role=treeitem title="Istio Certificate Authority (CA)." href=/v1.3/docs/reference/commands/istio_ca/>istio_ca</a></li><li role=none><a role=treeitem title="Istio control interface." href=/v1.3/docs/reference/commands/istioctl/>istioctl</a></li><li role=none><a role=treeitem title="Mixer is Istio's abstraction on top of infrastructure backends." href=/v1.3/docs/reference/commands/mixs/>mixs</a></li><li role=none><a role=treeitem title="Istio security per-node agent." href=/v1.3/docs/reference/commands/node_agent/>node_agent</a></li><li role=none><a role=treeitem title="The Istio operator." href=/v1.3/docs/reference/commands/operator/>operator</a></li><li role=none><a role=treeitem title="Istio Pilot agent." href=/v1.3/docs/reference/commands/pilot-agent/>pilot-agent</a></li><li role=none><a role=treeitem title="Istio Pilot." href=/v1.3/docs/reference/commands/pilot-discovery/>pilot-discovery</a></li><li role=none><a role=treeitem title="Kubernetes webhook for automatic Istio sidecar injection." href=/v1.3/docs/reference/commands/sidecar-injector/>sidecar-injector</a></li></ul></li><li role=none><a role=treeitem title="A glossary of common Istio terms." href=/v1.3/docs/reference/glossary/>Glossary</a></li></ul></div></div></div></nav></div><div class=article-container><button tabindex=-1 id=sidebar-toggler title="Toggle the navigation bar"><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#pull"/></svg></button><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/docs/ title="Learn how to deploy, use, and operate Istio.">Docs</a></li><li><a href=/v1.3/docs/ops/ title="Hints, tips, tricks about running an Istio mesh.">Operations</a></li><li><a href=/v1.3/docs/ops/troubleshooting/ title="Describes how to identify and resolve common problems in Istio.">Troubleshooting</a></li><li>Understand your Mesh with istioctl describe</li></ol></nav><article aria-labelledby=title><div class=title-area><div><h1 id=title>Understand your Mesh with istioctl describe</h1><p class=byline><span title="1384 words"><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#clock"/></svg><span>&nbsp;</span>7 minute read</span></p></div></div><nav class=toc-inlined aria-label="Table of Contents"><div><hr><ol><li role=none aria-label="Verify a pod is in the mesh"><a href=#verify-a-pod-is-in-the-mesh>Verify a pod is in the mesh</a><li role=none aria-label="Verify destination rule configurations"><a href=#verify-destination-rule-configurations>Verify destination rule configurations</a><li role=none aria-label="Verify virtual service configurations"><a href=#verify-virtual-service-configurations>Verify virtual service configurations</a><li role=none aria-label="Verifying traffic routes"><a href=#verifying-traffic-routes>Verifying traffic routes</a><li role=none aria-label="Verifying strict mutual TLS"><a href=#verifying-strict-mutual-tls>Verifying strict mutual TLS</a><li role=none aria-label="Conclusion and cleanup"><a href=#conclusion-and-cleanup>Conclusion and cleanup</a><li role=none aria-label="See also"><a href=#see-also>See also</a></li></ol><hr></div></nav><div><aside class="callout warning"><div class=type><svg class="large-icon"><use xlink:href="/v1.3/img/icons.svg#callout-warning"/></svg></div><div class=content>The following information describes an experimental feature, which is intended
for evaluation purposes only.</div></aside></div><p>In Istio 1.3, we included the <a href=/v1.3/docs/reference/commands/istioctl/#istioctl-experimental-describe-pod><code>istioctl experimental describe</code></a>
command. This CLI command provides you with the information needed to understand
the configuration impacting a <span class=term data-title=Pod data-body='&lt;p&gt;A Pod is a group of one or more containers (such as &lt;a href="https://www.docker.com/"&gt;Docker&lt;/a&gt; containers),
with shared storage and network, and a specification for how to run the containers.
Pods are the &lt;a href="#workload-instance"&gt;workload instances&lt;/a&gt; in a
&lt;a href="https://kubernetes.io/docs/concepts/workloads/pods/pod-overview/"&gt;Kubernetes&lt;/a&gt; deployment of Istio.&lt;/p&gt;'>pod</span>. This guide shows
you how to use this experimental sub-command to see if a pod is in the mesh and
verify its configuration.</p><p>The basic usage of the command is as follows:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ istioctl experimental describe &lt;pod-name&gt;[.&lt;namespace&gt;]
</code></pre><p>Appending a namespace to the pod name has the same affect as using the <code>-n</code> option
of <code>istioctl</code> to specify a non-default namespace.</p><div><aside class="callout tip"><div class=type><svg class="large-icon"><use xlink:href="/v1.3/img/icons.svg#callout-tip"/></svg></div><div class=content>Just like all other <code>istioctl</code> commands, you can replace <code>experimental</code>
with <code>x</code> for convenience.</div></aside></div><p>This guide assumes you have deployed the <a href=/v1.3/docs/examples/bookinfo/>Bookinfo</a>
sample in your mesh. If you haven&rsquo;t already done so,
<a href=/v1.3/docs/examples/bookinfo/#start-the-application-services>start the application&rsquo;s services</a>
and <a href=/v1.3/docs/examples/bookinfo/#determine-the-ingress-ip-and-port>determine the IP and port of the ingress</a>
before continuing.</p><h2 id=verify-a-pod-is-in-the-mesh>Verify a pod is in the mesh</h2><p>The <code>istioctl describe</code> command returns a warning if the <span class=term data-title=Envoy data-body='&lt;p&gt;The high-performance proxy that Istio uses to mediate inbound and outbound traffic for all &lt;a href="#service"&gt;services&lt;/a&gt; in the
&lt;a href="#service-mesh"&gt;service mesh&lt;/a&gt;. &lt;a href="https://envoyproxy.github.io/envoy/"&gt;Learn more about Envoy&lt;/a&gt;.&lt;/p&gt;'>Envoy</span>
proxy is not present in a pod or if the proxy has not started. Additionally, the command warns
if some of the <a href=/v1.3/docs/setup/additional-setup/requirements/>Istio requirements for pods</a>
are not met.</p><p>For example, the following command produces a warning indicating a <code>kubernetes-dashboard</code>
pod is not part of the service mesh because it has no sidecar:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ export DASHBOARD_POD=$(kubectl -n kube-system get pod -l k8s-app=kubernetes-dashboard -o jsonpath=&#39;{.items[0].metadata.name}&#39;)
$ istioctl x describe pod -n kube-system $DASHBOARD_POD
WARNING: kubernetes-dashboard-7996b848f4-nbns2.kube-system is not part of mesh; no Istio sidecar
</code></pre><p>The command will not produce such a warning for a pod that is part of the mesh,
the Bookinfo <code>ratings</code> service for example, but instead will output the Istio configuration applied to the pod:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ export RATINGS_POD=$(kubectl get pod -l app=ratings -o jsonpath=&#39;{.items[0].metadata.name}&#39;)
$ istioctl experimental describe pod $RATINGS_POD
Pod: ratings-v1-f745cf57b-qrxl2
Pod Ports: 9080 (ratings), 15090 (istio-proxy)
--------------------
Service: ratings
Port: http 9080/HTTP
Pilot reports that pod enforces HTTP/mTLS and clients speak HTTP
</code></pre><p>The output shows the following information:</p><ul><li>The ports of the service container in the pod, <code>9080</code> for the <code>ratings</code> container in this example.</li><li>The ports of the <code>istio-proxy</code> container in the pod, <code>15090</code> in this example.</li><li>The protocol used by the service in the pod, <code>HTTP</code> over port <code>9080</code> in this example.</li><li>The mutual TLS settings for the pod.</li></ul><h2 id=verify-destination-rule-configurations>Verify destination rule configurations</h2><p>You can use <code>istioctl describe</code> to see what
<a href=/v1.3/docs/concepts/traffic-management/#destination-rules>destination rules</a> apply to requests
to a pod. For example, apply the Bookinfo
<a href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/destination-rule-all-mtls.yaml>mutual TLS destination rules</a>:</p><div><a data-skipendnotes=true style=display:none href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/destination-rule-all-mtls.yaml>Zip</a><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl apply -f @samples/bookinfo/networking/destination-rule-all-mtls.yaml@
</code></pre></div><p>Now describe the <code>ratings</code> pod again:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ istioctl x describe pod $RATINGS_POD
Pod: ratings-v1-f745cf57b-qrxl2
Pod Ports: 9080 (ratings), 15090 (istio-proxy)
--------------------
Service: ratings
Port: http 9080/HTTP
DestinationRule: ratings for &#34;ratings&#34;
Matching subsets: v1
(Non-matching subsets v2,v2-mysql,v2-mysql-vm)
Traffic Policy TLS Mode: ISTIO_MUTUAL
Pilot reports that pod enforces HTTP/mTLS and clients speak mTLS
</code></pre><p>The command now shows additional output:</p><ul><li>The <code>ratings</code> destination rule applies to request to the <code>ratings</code> service.</li><li>The subset of the <code>ratings</code> destination rule that matches the pod, <code>v1</code> in this example.</li><li>The other subsets defined by the destination rule.</li><li>The pod accepts either HTTP or mutual TLS requests but clients use mutual TLS.</li></ul><h2 id=verify-virtual-service-configurations>Verify virtual service configurations</h2><p>When <a href=/v1.3/docs/concepts/traffic-management/#virtual-services>virtual services</a> configure
routes to a pod, <code>istioctl describe</code> will also include the routes in its output.
For example, apply the
<a href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/virtual-service-all-v1.yaml>Bookinfo virtual services</a>
that route all requests to <code>v1</code> pods:</p><div><a data-skipendnotes=true style=display:none href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/virtual-service-all-v1.yaml>Zip</a><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl apply -f @samples/bookinfo/networking/virtual-service-all-v1.yaml@
</code></pre></div><p>Then, describe a pod implementing <code>v1</code> of the <code>reviews</code> service:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ export REVIEWS_V1_POD=$(kubectl get pod -l app=reviews,version=v1 -o jsonpath=&#39;{.items[0].metadata.name}&#39;)
$ istioctl x describe pod $REVIEWS_V1_POD
...
VirtualService: reviews
1 HTTP route(s)
</code></pre><p>The output contains similar information to that shown previously for the <code>ratings</code> pod,
but it also includes the virtual service&rsquo;s routes to the pod.</p><p>The <code>istioctl describe</code> command doesn&rsquo;t just show the virtual services impacting the pod.
If a virtual service configures the service host of a pod but no traffic will reach it,
the command&rsquo;s output includes a warning. This case can occur if the virtual service
actually blocks traffic by never routing traffic to the pod&rsquo;s subset. For
example:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ export REVIEWS_V2_POD=$(kubectl get pod -l app=reviews,version=v2 -o jsonpath=&#39;{.items[0].metadata.name}&#39;)
$ istioctl x describe pod $REVIEWS_V2_POD
...
VirtualService: reviews
WARNING: No destinations match pod subsets (checked 1 HTTP routes)
Route to non-matching subset v1 for (everything)
</code></pre><p>The warning includes the cause of the problem, how many routes were checked, and
even gives you information about the other routes in place. In this example,
no traffic arrives at the <code>v2</code> pod because the route in the virtual service directs all
traffic to the <code>v1</code> subset.</p><p>If you now delete the Bookinfo destination rules:</p><div><a data-skipendnotes=true style=display:none href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/destination-rule-all-mtls.yaml>Zip</a><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl delete -f @samples/bookinfo/networking/destination-rule-all-mtls.yaml@
</code></pre></div><p>You can see another useful feature of <code>istioctl describe</code>:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ istioctl x describe pod $REVIEWS_V1_POD
...
VirtualService: reviews
WARNING: No destinations match pod subsets (checked 1 HTTP routes)
Warning: Route to subset v1 but NO DESTINATION RULE defining subsets!
</code></pre><p>The output shows you that you deleted the destination rule but not the virtual
service that depends on it. The virtual service routes traffic to the <code>v1</code>
subset, but there is no destination rule defining the <code>v1</code> subset.
Thus, traffic destined for version <code>v1</code> can&rsquo;t flow to the pod.</p><p>If you refresh the browser to send a new request to Bookinfo at this
point, you would see the following message: <code>Error fetching product reviews</code>.
To fix the problem, reapply the destination rule:</p><div><a data-skipendnotes=true style=display:none href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/destination-rule-all-mtls.yaml>Zip</a><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl apply -f @samples/bookinfo/networking/destination-rule-all-mtls.yaml@
</code></pre></div><p>Reloading the browser shows the app working again and
running <code>istioctl experimental describe pod $REVIEWS_V1_POD</code> no longer produces
warnings.</p><h2 id=verifying-traffic-routes>Verifying traffic routes</h2><p>The <code>istioctl describe</code> command shows split traffic weights too.
For example, run the following command to route 90% of traffic to the <code>v1</code> subset
and 10% to the <code>v2</code> subset of the the <code>reviews</code> service:</p><div><a data-skipendnotes=true style=display:none href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/virtual-service-reviews-90-10.yaml>Zip</a><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl apply -f @samples/bookinfo/networking/virtual-service-reviews-90-10.yaml@
</code></pre></div><p>Now describe the <code>reviews</code> <code>v1</code> pod:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ istioctl x describe pod $REVIEWS_V1_POD
...
VirtualService: reviews
Weight 90%
</code></pre><p>The output shows that the <code>reviews</code> virtual service has a weight of 90% for the
<code>v1</code> subset.</p><p>This function is also helpful for other types of routing. For example, you can deploy
header-specific routing:</p><div><a data-skipendnotes=true style=display:none href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/virtual-service-reviews-jason-v2-v3.yaml>Zip</a><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl apply -f @samples/bookinfo/networking/virtual-service-reviews-jason-v2-v3.yaml@
</code></pre></div><p>Then, describe the pod again:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ istioctl x describe pod $REVIEWS_V1_POD
...
VirtualService: reviews
WARNING: No destinations match pod subsets (checked 2 HTTP routes)
Route to non-matching subset v2 for (when headers are end-user=jason)
Route to non-matching subset v3 for (everything)
</code></pre><p>The output produces a warning since you are describing a pod in the <code>v1</code> subset.
However, the virtual service configuration you applied routes traffic to the <code>v2</code>
subset if the header contains <code>end-user=jason</code> and to the <code>v3</code> subset in all
other cases.</p><h2 id=verifying-strict-mutual-tls>Verifying strict mutual TLS</h2><p>Following the <a href=/v1.3/docs/tasks/security/mtls-migration/>mutual TLS migration</a>
instructions, you can enable strict mutual TLS for the <code>ratings</code> service:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl apply -f - &lt;&lt;EOF
apiVersion: &#34;authentication.istio.io/v1alpha1&#34;
kind: &#34;Policy&#34;
metadata:
name: &#34;ratings-strict&#34;
spec:
targets:
- name: ratings
peers:
- mtls:
mode: STRICT
EOF
</code></pre><p>Run the following command to describe the <code>ratings</code> pod:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ istioctl x describe pod $RATINGS_POD
Pilot reports that pod enforces mTLS and clients speak mTLS
</code></pre><p>The output reports that requests to the the <code>ratings</code> pod are now locked down and secure.</p><p>Sometimes, however, a deployment breaks when switching mutual TLS to <code>STRICT</code>.
The likely cause is that the destination rule didn&rsquo;t match the new configuration.
For example, if you configure the Bookinfo clients to not use mutual TLS using the
<a href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/destination-rule-all.yaml>plain HTTP destination rules</a>:</p><div><a data-skipendnotes=true style=display:none href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/destination-rule-all.yaml>Zip</a><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl apply -f @samples/bookinfo/networking/destination-rule-all.yaml@
</code></pre></div><p>If you open Bookinfo in your browser, you see <code>Ratings service is currently unavailable</code>.
To learn why, run the following command:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ istioctl x describe pod $RATINGS_POD
...
WARNING Pilot predicts TLS Conflict on ratings-v1-f745cf57b-qrxl2 port 9080 (pod enforces mTLS, clients speak HTTP)
Check DestinationRule ratings/default and AuthenticationPolicy ratings-strict/default
</code></pre><p>The output includes a warning describing the conflict
between the destination rule and the authentication policy.</p><p>You can restore correct behavior by applying a destination rule that uses
mutual TLS:</p><div><a data-skipendnotes=true style=display:none href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/destination-rule-all-mtls.yaml>Zip</a><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl apply -f @samples/bookinfo/networking/destination-rule-all-mtls.yaml@
</code></pre></div><h2 id=conclusion-and-cleanup>Conclusion and cleanup</h2><p>Our goal with the <code>istioctl x describe</code> command is to help you understand the
traffic and security configurations in your Istio mesh.</p><p>We would love to hear your ideas for improvements!
Please join us at <a href=https://discuss.istio.io>https://discuss.istio.io</a>.</p><p>To remove the Bookinfo pods and configurations used in this guide, run the
following commands:</p><div><a data-skipendnotes=true style=display:none href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/virtual-service-all-v1.yaml>Zip</a><a data-skipendnotes=true style=display:none href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/destination-rule-all-mtls.yaml>Zip</a><a data-skipendnotes=true style=display:none href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/networking/bookinfo-gateway.yaml>Zip</a><a data-skipendnotes=true style=display:none href=https://raw.githubusercontent.com/istio/istio/release-1.3/samples/bookinfo/platform/kube/bookinfo.yaml>Zip</a><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl delete -f @samples/bookinfo/platform/kube/bookinfo.yaml@
$ kubectl delete -f @samples/bookinfo/networking/bookinfo-gateway.yaml@
$ kubectl delete -f @samples/bookinfo/networking/destination-rule-all-mtls.yaml@
$ kubectl delete -f @samples/bookinfo/networking/virtual-service-all-v1.yaml@
</code></pre></div><nav id=see-also><h2>See also</h2><div class=see-also><div class=entry><p class=link><a data-skipendnotes=true href=/v1.3/blog/2019/data-plane-setup/>Demystifying Istio&#39;s Sidecar Injection Model</a></p><p class=desc>De-mystify how Istio manages to plugin its data-plane components into an existing deployment.</p></div><div class=entry><p class=link><a data-skipendnotes=true href=/v1.3/blog/2019/proxy/>Istio as a Proxy for External Services</a></p><p class=desc>Configure Istio ingress gateway to act as a proxy for external services.</p></div><div class=entry><p class=link><a data-skipendnotes=true href=/v1.3/blog/2019/egress-traffic-control-in-istio-part-3/>Secure Control of Egress Traffic in Istio, part 3</a></p><p class=desc>Comparison of alternative solutions to control egress traffic including performance considerations.</p></div><div class=entry><p class=link><a data-skipendnotes=true href=/v1.3/blog/2019/egress-traffic-control-in-istio-part-2/>Secure Control of Egress Traffic in Istio, part 2</a></p><p class=desc>Use Istio Egress Traffic Control to prevent attacks involving egress traffic.</p></div><div class=entry><p class=link><a data-skipendnotes=true href=/v1.3/blog/2019/egress-traffic-control-in-istio-part-1/>Secure Control of Egress Traffic in Istio, part 1</a></p><p class=desc>Attacks involving egress traffic and requirements for egress traffic control.</p></div><div class=entry><p class=link><a data-skipendnotes=true href=/v1.3/blog/2019/multicluster-version-routing/>Version Routing in a Multicluster Service Mesh</a></p><p class=desc>Configuring Istio route rules in a multicluster service mesh.</p></div></div></nav></article><nav class=pagenav><div class=left><a title="Fix missing traces in Zipkin." href=/v1.3/docs/ops/troubleshooting/missing-traces/><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#left-arrow"/></svg>Missing Zipkin Traces</a></div><div class=right><a title="Describes how to use component-level logging to get insights into a running component's behavior." href=/v1.3/docs/ops/troubleshooting/component-logging/>Component Logging<svg class="icon"><use xlink:href="/v1.3/img/icons.svg#right-arrow"/></svg></a></div></nav><div id=endnotes-container aria-hidden=true><h2>Links</h2><ol id=endnotes></ol></div></div><div class=toc-container><nav class=toc aria-label="Table of Contents"><div id=toc><ol><li role=none aria-label="Verify a pod is in the mesh"><a href=#verify-a-pod-is-in-the-mesh>Verify a pod is in the mesh</a><li role=none aria-label="Verify destination rule configurations"><a href=#verify-destination-rule-configurations>Verify destination rule configurations</a><li role=none aria-label="Verify virtual service configurations"><a href=#verify-virtual-service-configurations>Verify virtual service configurations</a><li role=none aria-label="Verifying traffic routes"><a href=#verifying-traffic-routes>Verifying traffic routes</a><li role=none aria-label="Verifying strict mutual TLS"><a href=#verifying-strict-mutual-tls>Verifying strict mutual TLS</a><li role=none aria-label="Conclusion and cleanup"><a href=#conclusion-and-cleanup>Conclusion and cleanup</a><li role=none aria-label="See also"><a href=#see-also>See also</a></li></ol></div></nav></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>
</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>
<a class=channel title="Stack Overflow is where you can ask questions and find curated answers on deploying, configuring, and using Istio" href=https://stackoverflow.com/questions/tagged/istio aria-label="Stack Overflow"><span>stack overflow</span><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#stackoverflow"/></svg></a>
<a class=channel title="Interactively discuss issues with the Istio community on Slack" href=https://istio.slack.com aria-label=slack><span>slack</span><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#slack"/></svg></a>
<a class=channel title="Follow us on Twitter to get the latest news" href=https://twitter.com/IstioMesh aria-label=Twitter><span>twitter</span><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#twitter"/></svg></a><div class=tag>for everyone</div></div><div class=info><p class=copyright>Istio Archive
1.3.5<br>&copy; 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>
<a class=channel title="Access our team drive if you'd like to take a look at the Istio technical design documents" href=https://groups.google.com/forum/#!forum/istio-team-drive-access aria-label="team drive"><span>drive</span><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#drive"/></svg></a>
<a class=channel title="If you'd like to contribute to the Istio project, consider participating in our working groups" href=https://github.com/istio/community/blob/master/WORKING-GROUPS.md aria-label="working groups"><span>working groups</span><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#working-groups"/></svg></a><div class=tag>for developers</div></div></footer><script src=https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js defer></script><div id=scroll-to-top-container aria-hidden=true><button id=scroll-to-top title="Back to top"><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#top"/></svg></button></div></body></html>