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<!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="Debugging Envoy and Pilot"><meta name=description content="Describes tools and techniques to diagnose Envoy configuration issues related to traffic management."><meta name=keywords content=microservices,services,mesh,debug,proxy,status,config,pilot,envoy><meta property=og:title content="Debugging Envoy and Pilot"><meta property=og:type content=website><meta property=og:description content="Describes tools and techniques to diagnose Envoy configuration issues related to traffic management."><meta property=og:url content=/v1.3/docs/ops/troubleshooting/proxy-cmd/><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 / Debugging Envoy and Pilot</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);}
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<button id=search-close title="Cancel search" type=reset aria-label="Cancel search"><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#cancel-x"/></svg></button></form></nav></header><main class=primary><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><span role=treeitem class=current title="Describes tools and techniques to diagnose Envoy configuration issues related to traffic management.">Debugging Envoy and Pilot</span></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><a role=treeitem title="Shows you how to use istioctl describe to verify the configurations of a pod in your mesh." href=/v1.3/docs/ops/troubleshooting/istioctl-describe/>Understand your Mesh with istioctl describe</a></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>Debugging Envoy and Pilot</li></ol></nav><article aria-labelledby=title><div class=title-area><div><h1 id=title>Debugging Envoy and Pilot</h1><p class=byline><span title="1549 words"><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#clock"/></svg><span>&nbsp;</span>8 minute read</span></p></div></div><nav class=toc-inlined aria-label="Table of Contents"><div><hr><ol><li role=none aria-label="Get an overview of your mesh"><a href=#get-an-overview-of-your-mesh>Get an overview of your mesh</a><li role=none aria-label="Retrieve diffs between Envoy and Istio Pilot"><a href=#retrieve-diffs-between-envoy-and-istio-pilot>Retrieve diffs between Envoy and Istio Pilot</a><li role=none aria-label="Deep dive into Envoy configuration"><a href=#deep-dive-into-envoy-configuration>Deep dive into Envoy configuration</a><li role=none aria-label="Inspecting Bootstrap configuration"><a href=#inspecting-bootstrap-configuration>Inspecting Bootstrap configuration</a><li role=none aria-label="Verifying connectivity to Istio Pilot"><a href=#verifying-connectivity-to-istio-pilot>Verifying connectivity to Istio Pilot</a><li role=none aria-label="What Envoy version is Istio using?"><a href=#what-envoy-version-is-istio-using>What Envoy version is Istio using?</a><li role=none aria-label="See also"><a href=#see-also>See also</a></li></ol><hr></div></nav><p>Istio provides two very valuable commands to help diagnose traffic management configuration problems,
the <a href=/v1.3/docs/reference/commands/istioctl/#istioctl-proxy-status><code>proxy-status</code></a>
and <a href=/v1.3/docs/reference/commands/istioctl/#istioctl-proxy-config><code>proxy-config</code></a> commands. The <code>proxy-status</code> command
allows you to get an overview of your mesh and identify the proxy causing the problem. Then <code>proxy-config</code> can be used
to inspect Envoy configuration and diagnose the issue.</p><p>If you want to try the commands described below, you can either:</p><ul><li>Have a Kubernetes cluster with Istio and Bookinfo installed (e.g use <code>istio.yaml</code> as described in
<a href=/v1.3/docs/setup/install/kubernetes/#installation-steps>installation steps</a> and
<a href=/v1.3/docs/examples/bookinfo/#deploying-the-application>Bookinfo installation steps</a>).</li></ul><p>OR</p><ul><li>Use similar commands against your own application running in a Kubernetes cluster.</li></ul><h2 id=get-an-overview-of-your-mesh>Get an overview of your mesh</h2><p>The <code>proxy-status</code> command allows you to get an overview of your mesh. If you suspect one of your sidecars isn&rsquo;t
receiving configuration or is out of sync then <code>proxy-status</code> will tell you this.</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ istioctl proxy-status
PROXY CDS LDS EDS RDS PILOT VERSION
details-v1-6dcc6fbb9d-wsjz4.default SYNCED SYNCED SYNCED SYNCED istio-pilot-75bdf98789-tfdvh 1.1.2
istio-egressgateway-c49694485-l9d5l.istio-system SYNCED SYNCED SYNCED NOT SENT istio-pilot-75bdf98789-tfdvh 1.1.2
istio-ingress-6458b8c98f-7ks48.istio-system SYNCED SYNCED SYNCED NOT SENT istio-pilot-75bdf98789-n2kqh 1.1.2
istio-ingressgateway-7d6874b48f-qxhn5.istio-system SYNCED SYNCED SYNCED SYNCED istio-pilot-75bdf98789-n2kqh 1.1.2
productpage-v1-6c886ff494-hm7zk.default SYNCED SYNCED SYNCED STALE istio-pilot-75bdf98789-n2kqh 1.1.2
ratings-v1-5d9ff497bb-gslng.default SYNCED SYNCED SYNCED SYNCED istio-pilot-75bdf98789-n2kqh 1.1.2
reviews-v1-55d4c455db-zjj2m.default SYNCED SYNCED SYNCED SYNCED istio-pilot-75bdf98789-n2kqh 1.1.2
reviews-v2-686bbb668-99j76.default SYNCED SYNCED SYNCED SYNCED istio-pilot-75bdf98789-tfdvh 1.1.2
reviews-v3-7b9b5fdfd6-4r52s.default SYNCED SYNCED SYNCED SYNCED istio-pilot-75bdf98789-n2kqh 1.1.2
</code></pre><p>If a proxy is missing from this list it means that it is not currently connected to a Pilot instance so will not be
receiving any configuration.</p><ul><li><code>SYNCED</code> means that Envoy has acknowledged the last configuration Pilot has sent to it.</li><li><code>NOT SENT</code> means that Pilot hasn&rsquo;t sent anything to Envoy. This usually is because Pilot has nothing to send.</li><li><code>STALE</code> means that Pilot has sent an update to Envoy but has not received an acknowledgement. This usually indicates
a networking issue between Envoy and Pilot or a bug with Istio itself.</li></ul><h2 id=retrieve-diffs-between-envoy-and-istio-pilot>Retrieve diffs between Envoy and Istio Pilot</h2><p>The <code>proxy-status</code> command can also be used to retrieve a diff between the configuration Envoy has loaded and the
configuration Pilot would send, by providing a proxy ID. This can help you determine exactly what is out of sync and
where the issue may lie.</p><pre><code class=language-bash data-expandlinks=true data-outputis=json data-repo=istio>$ istioctl proxy-status details-v1-6dcc6fbb9d-wsjz4.default
--- Pilot Clusters
+++ Envoy Clusters
@@ -374,36 +374,14 @@
&#34;edsClusterConfig&#34;: {
&#34;edsConfig&#34;: {
&#34;ads&#34;: {
}
},
&#34;serviceName&#34;: &#34;outbound|443||public-cr0bdc785ce3f14722918080a97e1f26be-alb1.kube-system.svc.cluster.local&#34;
- },
- &#34;connectTimeout&#34;: &#34;1.000s&#34;,
- &#34;circuitBreakers&#34;: {
- &#34;thresholds&#34;: [
- {
-
- }
- ]
- }
- }
- },
- {
- &#34;cluster&#34;: {
- &#34;name&#34;: &#34;outbound|53||kube-dns.kube-system.svc.cluster.local&#34;,
- &#34;type&#34;: &#34;EDS&#34;,
- &#34;edsClusterConfig&#34;: {
- &#34;edsConfig&#34;: {
- &#34;ads&#34;: {
-
- }
- },
- &#34;serviceName&#34;: &#34;outbound|53||kube-dns.kube-system.svc.cluster.local&#34;
},
&#34;connectTimeout&#34;: &#34;1.000s&#34;,
&#34;circuitBreakers&#34;: {
&#34;thresholds&#34;: [
{
}
Listeners Match
Routes Match
</code></pre><p>Here you can see that the listeners and routes match but the clusters are out of sync.</p><h2 id=deep-dive-into-envoy-configuration>Deep dive into Envoy configuration</h2><p>The <code>proxy-config</code> command can be used to see how a given Envoy instance is configured. This can then be used to
pinpoint any issues you are unable to detect by just looking through your Istio configuration and custom resources.
To get a basic summary of clusters, listeners or routes for a given pod use the command as follows (changing clusters
for listeners or routes when required):</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ istioctl proxy-config cluster -n istio-system istio-ingressgateway-7d6874b48f-qxhn5
SERVICE FQDN PORT SUBSET DIRECTION TYPE
BlackHoleCluster - - - STATIC
details.default.svc.cluster.local 9080 - outbound EDS
heapster.kube-system.svc.cluster.local 80 - outbound EDS
istio-citadel.istio-system.svc.cluster.local 8060 - outbound EDS
istio-citadel.istio-system.svc.cluster.local 10514 - outbound EDS
istio-egressgateway.istio-system.svc.cluster.local 80 - outbound EDS
...
</code></pre><p>In order to debug Envoy you need to understand Envoy clusters/listeners/routes/endpoints and how they all interact.
We will use the <code>proxy-config</code> command with the <code>-o json</code> and filtering flags to follow Envoy as it determines where
to send a request from the <code>productpage</code> pod to the <code>reviews</code> pod at <code>reviews:9080</code>.</p><ol><li><p>If you query the listener summary on a pod you will notice Istio generates the following listeners:</p><ul><li>A listener on <code>0.0.0.0:15001</code> that receives all traffic into and out of the pod, then hands the request over to
a virtual listener.</li><li>A virtual listener per service IP, per each non-HTTP for outbound TCP/HTTPS traffic.</li><li>A virtual listener on the pod IP for each exposed port for inbound traffic.</li><li>A virtual listener on <code>0.0.0.0</code> per each HTTP port for outbound HTTP traffic.</li></ul><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ istioctl proxy-config listeners productpage-v1-6c886ff494-7vxhs
ADDRESS PORT TYPE
172.21.252.250 15005 TCP &lt;--+
172.21.252.250 15011 TCP |
172.21.79.56 42422 TCP |
172.21.160.5 443 TCP |
172.21.157.6 443 TCP |
172.21.117.222 443 TCP |
172.21.0.10 53 TCP |
172.21.126.131 443 TCP | Receives outbound non-HTTP traffic for relevant IP:PORT pair from listener `0.0.0.0_15001`
172.21.160.5 31400 TCP |
172.21.81.159 9102 TCP |
172.21.0.1 443 TCP |
172.21.126.131 80 TCP |
172.21.119.8 443 TCP |
172.21.112.64 80 TCP |
172.21.179.54 443 TCP |
172.21.165.197 443 TCP &lt;--+
0.0.0.0 9090 HTTP &lt;-+
0.0.0.0 8060 HTTP |
0.0.0.0 15010 HTTP |
0.0.0.0 15003 HTTP |
0.0.0.0 15004 HTTP |
0.0.0.0 10514 HTTP | Receives outbound HTTP traffic for relevant port from listener `0.0.0.0_15001`
0.0.0.0 15007 HTTP |
0.0.0.0 8080 HTTP |
0.0.0.0 9091 HTTP |
0.0.0.0 9080 HTTP |
0.0.0.0 80 HTTP &lt;-+
0.0.0.0 15001 TCP // Receives all inbound and outbound traffic to the pod from IP tables and hands over to virtual listener
172.30.164.190 9080 HTTP // Receives all inbound traffic on 9080 from listener `0.0.0.0_15001`
</code></pre></li><li><p>From the above summary you can see that every sidecar has a listener bound to <code>0.0.0.0:15001</code> which is where
IP tables routes all inbound and outbound pod traffic to. This listener has <code>useOriginalDst</code> set to true which means
it hands the request over to the listener that best matches the original destination of the request.
If it can&rsquo;t find any matching virtual listeners it sends the request to the <code>PassthroughCluster</code> which connects to the destination directly.</p><pre><code class=language-bash data-expandlinks=true data-outputis=json data-repo=istio>$ istioctl proxy-config listeners productpage-v1-6c886ff494-7vxhs --port 15001 -o json
[
{
&#34;name&#34;: &#34;virtual&#34;,
&#34;address&#34;: {
&#34;socketAddress&#34;: {
&#34;address&#34;: &#34;0.0.0.0&#34;,
&#34;portValue&#34;: 15001
}
},
&#34;filterChains&#34;: [
{
&#34;filters&#34;: [
{
&#34;name&#34;: &#34;envoy.tcp_proxy&#34;,
&#34;config&#34;: {
&#34;cluster&#34;: &#34;PassthroughCluster&#34;,
&#34;stat_prefix&#34;: &#34;PassthroughCluster&#34;
}
}
]
}
],
&#34;useOriginalDst&#34;: true
}
]
</code></pre></li><li><p>Our request is an outbound HTTP request to port <code>9080</code> this means it gets handed off to the <code>0.0.0.0:9080</code> virtual
listener. This listener then looks up the route configuration in its configured RDS. In this case it will be looking
up route <code>9080</code> in RDS configured by Pilot (via ADS).</p><pre><code class=language-bash data-expandlinks=true data-outputis=json data-repo=istio>$ istioctl proxy-config listeners productpage-v1-6c886ff494-7vxhs -o json --address 0.0.0.0 --port 9080
...
&#34;rds&#34;: {
&#34;config_source&#34;: {
&#34;ads&#34;: {}
},
&#34;route_config_name&#34;: &#34;9080&#34;
}
...
</code></pre></li><li><p>The <code>9080</code> route configuration only has a virtual host for each service. Our request is heading to the reviews
service so Envoy will select the virtual host to which our request matches a domain. Once matched on domain Envoy
looks for the first route that matches the request. In this case we don&rsquo;t have any advanced routing so there is only
one route that matches on everything. This route tells Envoy to send the request to the
<code>outbound|9080||reviews.default.svc.cluster.local</code> cluster.</p><pre><code class=language-bash data-expandlinks=true data-outputis=json data-repo=istio>$ istioctl proxy-config routes productpage-v1-6c886ff494-7vxhs --name 9080 -o json
[
{
&#34;name&#34;: &#34;9080&#34;,
&#34;virtualHosts&#34;: [
{
&#34;name&#34;: &#34;reviews.default.svc.cluster.local:9080&#34;,
&#34;domains&#34;: [
&#34;reviews.default.svc.cluster.local&#34;,
&#34;reviews.default.svc.cluster.local:9080&#34;,
&#34;reviews&#34;,
&#34;reviews:9080&#34;,
&#34;reviews.default.svc.cluster&#34;,
&#34;reviews.default.svc.cluster:9080&#34;,
&#34;reviews.default.svc&#34;,
&#34;reviews.default.svc:9080&#34;,
&#34;reviews.default&#34;,
&#34;reviews.default:9080&#34;,
&#34;172.21.152.34&#34;,
&#34;172.21.152.34:9080&#34;
],
&#34;routes&#34;: [
{
&#34;match&#34;: {
&#34;prefix&#34;: &#34;/&#34;
},
&#34;route&#34;: {
&#34;cluster&#34;: &#34;outbound|9080||reviews.default.svc.cluster.local&#34;,
&#34;timeout&#34;: &#34;0.000s&#34;
},
...
</code></pre></li><li><p>This cluster is configured to retrieve the associated endpoints from Pilot (via ADS). So Envoy will then use the
<code>serviceName</code> field as a key to look up the list of Endpoints and proxy the request to one of them.</p><pre><code class=language-bash data-expandlinks=true data-outputis=json data-repo=istio>$ istioctl proxy-config cluster productpage-v1-6c886ff494-7vxhs --fqdn reviews.default.svc.cluster.local -o json
[
{
&#34;name&#34;: &#34;outbound|9080||reviews.default.svc.cluster.local&#34;,
&#34;type&#34;: &#34;EDS&#34;,
&#34;edsClusterConfig&#34;: {
&#34;edsConfig&#34;: {
&#34;ads&#34;: {}
},
&#34;serviceName&#34;: &#34;outbound|9080||reviews.default.svc.cluster.local&#34;
},
&#34;connectTimeout&#34;: &#34;1.000s&#34;,
&#34;circuitBreakers&#34;: {
&#34;thresholds&#34;: [
{}
]
}
}
]
</code></pre></li><li><p>To see the endpoints currently available for this cluster use the <code>proxy-config</code> endpoints command.</p><pre><code class=language-bash data-expandlinks=true data-outputis=json data-repo=istio>$ istioctl proxy-config endpoints productpage-v1-6c886ff494-7vxhs --cluster &#34;outbound|9080||reviews.default.svc.cluster.local&#34;
ENDPOINT STATUS OUTLIER CHECK CLUSTER
172.17.0.17:9080 HEALTHY OK outbound|9080||reviews.default.svc.cluster.local
172.17.0.18:9080 HEALTHY OK outbound|9080||reviews.default.svc.cluster.local
172.17.0.5:9080 HEALTHY OK outbound|9080||reviews.default.svc.cluster.local
</code></pre></li></ol><h2 id=inspecting-bootstrap-configuration>Inspecting Bootstrap configuration</h2><p>So far we have looked at configuration retrieved (mostly) from Pilot, however Envoy requires some bootstrap configuration that
includes information like where Pilot can be found. To view this use the following command:</p><pre><code class=language-bash data-expandlinks=true data-outputis=json data-repo=istio>$ istioctl proxy-config bootstrap -n istio-system istio-ingressgateway-7d6874b48f-qxhn5
{
&#34;bootstrap&#34;: {
&#34;node&#34;: {
&#34;id&#34;: &#34;router~172.30.86.14~istio-ingressgateway-7d6874b48f-qxhn5.istio-system~istio-system.svc.cluster.local&#34;,
&#34;cluster&#34;: &#34;istio-ingressgateway&#34;,
&#34;metadata&#34;: {
&#34;POD_NAME&#34;: &#34;istio-ingressgateway-7d6874b48f-qxhn5&#34;,
&#34;istio&#34;: &#34;sidecar&#34;
},
&#34;buildVersion&#34;: &#34;0/1.8.0-dev//RELEASE&#34;
},
...
</code></pre><h2 id=verifying-connectivity-to-istio-pilot>Verifying connectivity to Istio Pilot</h2><p>Verifying connectivity to Pilot is a useful troubleshooting step. Every proxy container in the service mesh should be able to communicate with Pilot. This can be accomplished in a few simple steps:</p><ol><li><p>Get the name of the Istio Ingress pod:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ INGRESS_POD_NAME=$(kubectl get po -n istio-system | grep ingressgateway\- | awk &#39;{print$1}&#39;); echo ${INGRESS_POD_NAME};
</code></pre></li><li><p>Exec into the Istio Ingress pod:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl exec -it $INGRESS_POD_NAME -n istio-system /bin/bash
</code></pre></li><li><p>Test connectivity to Pilot using <code>curl</code>. The following example invokes the v1 registration API using default Pilot configuration parameters and mutual TLS enabled:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ curl -k --cert /etc/certs/cert-chain.pem --cacert /etc/certs/root-cert.pem --key /etc/certs/key.pem https://istio-pilot:8080/debug/edsz
</code></pre><p>If mutual TLS is disabled:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ curl http://istio-pilot:8080/debug/edsz
</code></pre></li></ol><p>You should receive a response listing the &ldquo;service-key&rdquo; and &ldquo;hosts&rdquo; for each service in the mesh.</p><h2 id=what-envoy-version-is-istio-using>What Envoy version is Istio using?</h2><p>To find out the Envoy version used in deployment, you can <code>exec</code> into the container and query the <code>server_info</code> endpoint:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl exec -it PODNAME -c istio-proxy -n NAMESPACE pilot-agent request GET server_info
{
&#34;version&#34;: &#34;48bc83d8f0582fc060ef76d5aa3d75400e739d9e/1.12.0-dev/Clean/RELEASE/BoringSSL&#34;
}
</code></pre><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/docs/setup/additional-setup/cni/>Install Istio with the Istio CNI plugin</a></p><p class=desc>Install and use Istio with the Istio CNI plugin, allowing operators to deploy services with lower privilege.</p></div><div class=entry><p class=link><a data-skipendnotes=true href=/v1.3/docs/reference/config/policy-and-telemetry/mixer-overview/>Mixer Configuration Model</a></p><p class=desc>Describes the configuration model for Istio&#39;s policy enforcement and telemetry mechanisms.</p></div><div class=entry><p class=link><a data-skipendnotes=true href=/v1.3/docs/concepts/observability/>Observability</a></p><p class=desc>Describes the telemetry and monitoring features provided by Istio.</p></div><div class=entry><p class=link><a data-skipendnotes=true href=/v1.3/docs/concepts/traffic-management/>Traffic Management</a></p><p class=desc>Describes the various Istio features focused on traffic routing and control.</p></div></div></nav></article><nav class=pagenav><div class=left><a title="What to do if Citadel is not behaving properly." href=/v1.3/docs/ops/troubleshooting/repairing-citadel/><svg class="icon"><use xlink:href="/v1.3/img/icons.svg#left-arrow"/></svg>Repairing Citadel</a></div><div class=right><a title="Describes how to resolve Galley configuration problems." href=/v1.3/docs/ops/troubleshooting/validation/>Galley Configuration Problems<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="Get an overview of your mesh"><a href=#get-an-overview-of-your-mesh>Get an overview of your mesh</a><li role=none aria-label="Retrieve diffs between Envoy and Istio Pilot"><a href=#retrieve-diffs-between-envoy-and-istio-pilot>Retrieve diffs between Envoy and Istio Pilot</a><li role=none aria-label="Deep dive into Envoy configuration"><a href=#deep-dive-into-envoy-configuration>Deep dive into Envoy configuration</a><li role=none aria-label="Inspecting Bootstrap configuration"><a href=#inspecting-bootstrap-configuration>Inspecting Bootstrap configuration</a><li role=none aria-label="Verifying connectivity to Istio Pilot"><a href=#verifying-connectivity-to-istio-pilot>Verifying connectivity to Istio Pilot</a><li role=none aria-label="What Envoy version is Istio using?"><a href=#what-envoy-version-is-istio-using>What Envoy version is Istio using?</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>
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