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href=/v1.16/docs/concepts/observability/>Observability</a></li><li role=none><a role=treeitem title="Describes Istio's WebAssembly Plugin system." href=/v1.16/docs/concepts/wasm/>Extensibility</a></li></ul></li><li role=treeitem aria-label=Setup><a class=main title="Instructions for installing the Istio control plane on Kubernetes." href=/v1.16/docs/setup/>Setup</a><ul role=group aria-expanded=true><li role=none><a role=treeitem title="Try Istios features quickly and easily." href=/v1.16/docs/setup/getting-started/>Getting Started</a></li><li role=treeitem aria-label="Platform Setup"><button aria-hidden=true tabindex=-1></button><a title="How to prepare various Kubernetes platforms before installing Istio." href=/v1.16/docs/setup/platform-setup/>Platform Setup</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Prerequisites for platform setup for Istio." href=/v1.16/docs/setup/platform-setup/prerequisites/>Platform Prerequisites</a></li><li role=none><a role=treeitem title="Instructions to set up an Alibaba Cloud Kubernetes cluster for Istio." href=/v1.16/docs/setup/platform-setup/alicloud/>Alibaba Cloud</a></li><li role=none><a role=treeitem title="Instructions to set up an Azure cluster for Istio." href=/v1.16/docs/setup/platform-setup/azure/>Azure</a></li><li role=none><a role=treeitem title="Instructions to set up Docker Desktop for Istio." href=/v1.16/docs/setup/platform-setup/docker/>Docker Desktop</a></li><li role=none><a role=treeitem title="Instructions to set up a Google Kubernetes Engine cluster for Istio." href=/v1.16/docs/setup/platform-setup/gke/>Google Kubernetes Engine</a></li><li role=none><a role=treeitem title="Instructions to set up an Huawei Cloud kubernetes cluster for Istio." href=/v1.16/docs/setup/platform-setup/huaweicloud/>Huawei Cloud</a></li><li role=none><a role=treeitem title="Instructions to set up an IBM Cloud cluster for Istio." href=/v1.16/docs/setup/platform-setup/ibm/>IBM Cloud</a></li><li role=none><a role=treeitem title="Instructions to set up kind for Istio." href=/v1.16/docs/setup/platform-setup/kind/>kind</a></li><li role=none><a role=treeitem title="Instructions to set up Kops for use with Istio." href=/v1.16/docs/setup/platform-setup/kops/>Kops</a></li><li role=none><a role=treeitem title="Instructions to set up a Gardener cluster for Istio." href=/v1.16/docs/setup/platform-setup/gardener/>Kubernetes Gardener</a></li><li role=none><a role=treeitem title="Instructions to set up a KubeSphere Container Platform for Istio." href=/v1.16/docs/setup/platform-setup/kubesphere/>KubeSphere Container Platform</a></li><li role=none><a role=treeitem title="Instructions to set up MicroK8s for use with Istio." href=/v1.16/docs/setup/platform-setup/microk8s/>MicroK8s</a></li><li role=none><a role=treeitem title="Instructions to set up minikube for Istio." href=/v1.16/docs/setup/platform-setup/minikube/>Minikube</a></li><li role=none><a role=treeitem title="Instructions to set up an OpenShift cluster for Istio." href=/v1.16/docs/setup/platform-setup/openshift/>OpenShift</a></li><li role=none><a role=treeitem title="Instructions to prepare a cluster for Istio using Oracle Container Engine for Kubernetes (OKE)." href=/v1.16/docs/setup/platform-setup/oci/>Oracle Cloud Infrastructure</a></li><li role=none><a role=treeitem title="Instructions to set up Istio quickly in Tencent Cloud." href=/v1.16/docs/setup/platform-setup/tencent-cloud-mesh/>Tencent Cloud</a></li></ul></li><li role=treeitem aria-label=Install><button aria-hidden=true tabindex=-1></button><a title="Choose the guide that best suits your needs and platform." href=/v1.16/docs/setup/install/>Install</a><ul role=group aria-expanded=false><li role=none><a role=treeitem title="Install and customize any Istio configuration profile for in-depth evaluation or production use." href=/v1.16/docs/setup/install/istioctl/>Install with Istioctl</a></li><li role=none><a role=treeitem title="Install and configure Istio for in-depth evaluation." href=/v1.16/docs/setup/install/helm/>Install with Helm</a></li><li role=treeitem aria-label="Install Multicluster"><button aria-hidden=true tabindex=-1></button><a title="Install an Istio mesh across multiple Kubernetes clusters." href=/v1.16/docs/setup/install/multicluster/>Install Multicluster</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Initial steps before installing Istio on multiple clusters." href=/v1.16/docs/setup/install/multicluster/before-you-begin/>Before you begin</a></li><li role=none><a role=treeitem title="Install an Istio mesh across multiple primary clusters." href=/v1.16/docs/setup/install/multicluster/multi-primary/>Install Multi-Primary</a></li><li role=none><a role=treeitem title="Install an Istio mesh across primary and remote clusters." href=/v1.16/docs/setup/install/multicluster/primary-remote/>Install Primary-Remote</a></li><li role=none><a role=treeitem title="Install an Istio mesh across multiple primary clusters on different networks." href=/v1.16/docs/setup/install/multicluster/multi-primary_multi-network/>Install Multi-Primary on different networks</a></li><li role=none><a role=treeitem title="Install an Istio mesh across primary and remote clusters on different networks." href=/v1.16/docs/setup/install/multicluster/primary-remote_multi-network/>Install Primary-Remote on different networks</a></li><li role=none><a role=treeitem title="Verify that Istio has been installed properly on multiple clusters." href=/v1.16/docs/setup/install/multicluster/verify/>Verify the installation</a></li></ul></li><li role=none><a role=treeitem title="Install Istio with an external control plane and a remote cluster data plane." href=/v1.16/docs/setup/install/external-controlplane/>Install Istio with an External Control Plane</a></li><li role=none><a role=treeitem title="Install multiple Istio control planes in a single cluster using revisions and discoverySelectors." href=/v1.16/docs/setup/install/multiple-controlplanes/>Install Multiple Istio Control Planes in a Single Cluster</a></li><li role=none><a role=treeitem title="Deploy Istio and connect a workload running within a virtual machine to it." href=/v1.16/docs/setup/install/virtual-machine/>Virtual Machine Installation</a></li><li role=none><a role=treeitem title="Instructions to install Istio in a Kubernetes cluster using the Istio operator (Beta)" href=/v1.16/docs/setup/install/operator/>Istio Operator Install *</a></li></ul></li><li role=treeitem aria-label=Upgrade><button aria-hidden=true tabindex=-1></button><a title="Upgrade, downgrade, and manage Istio accross multiple control plane revisions." href=/v1.16/docs/setup/upgrade/>Upgrade</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Upgrade Istio by first running a canary deployment of a new control plane." href=/v1.16/docs/setup/upgrade/canary/>Canary Upgrades</a></li><li role=none><a role=treeitem title="Upgrade or downgrade Istio in place." href=/v1.16/docs/setup/upgrade/in-place/>In-place Upgrades</a></li><li role=none><a role=treeitem title="Upgrade and configure Istio for in-depth evaluation." href=/v1.16/docs/setup/upgrade/helm/>Upgrade with Helm</a></li></ul></li><li role=treeitem aria-label="More Guides"><button aria-hidden=true tabindex=-1></button><a title="More information on additional setup tasks." href=/v1.16/docs/setup/additional-setup/>More Guides</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Try Istios features quickly and easily." href=/v1.16/docs/setup/additional-setup/getting-started/>Getting Started with Istio and Kubernetes Gateway API</a></li><li role=none><a role=treeitem title="Describes the built-in Istio installation configuration profiles." href=/v1.16/docs/setup/additional-setup/config-profiles/>Installation Configuration Profiles</a></li><li role=none><a role=treeitem title="Install and customize Istio Gateways." href=/v1.16/docs/setup/additional-setup/gateway/>Installing Gateways</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=/v1.16/docs/setup/additional-setup/sidecar-injection/>Installing the Sidecar</a></li><li role=none><a role=treeitem title="Describes how to customize installation configuration options." href=/v1.16/docs/setup/additional-setup/customize-installation/>Customizing the installation configuration</a></li><li role=none><a role=treeitem title="Describes how to customize installation configuration options when installing with helm." href=/v1.16/docs/setup/additional-setup/customize-installation-helm/>Advanced Helm Chart Customization</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=/v1.16/docs/setup/additional-setup/cni/>Install Istio with the Istio CNI plugin</a></li></ul></li></ul></li><li role=treeitem aria-label=Tasks><a class=main title="How to do single specific targeted activities with the Istio system." href=/v1.16/docs/tasks/>Tasks</a><ul role=group aria-expanded=true><li role=treeitem aria-label="Traffic Management"><button aria-hidden=true tabindex=-1></button><a title="Tasks that demonstrate Istio's traffic routing features." href=/v1.16/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=/v1.16/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=/v1.16/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=/v1.16/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=/v1.16/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 set up request timeouts in Envoy using Istio." href=/v1.16/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=/v1.16/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=/v1.16/docs/tasks/traffic-management/mirroring/>Mirroring</a></li><li role=treeitem aria-label="Locality Load Balancing"><button aria-hidden=true tabindex=-1></button><a title="This series of tasks demonstrate how to configure locality load balancing in Istio." href=/v1.16/docs/tasks/traffic-management/locality-load-balancing/>Locality Load Balancing</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Initial steps before configuring locality load balancing." href=/v1.16/docs/tasks/traffic-management/locality-load-balancing/before-you-begin/>Before you begin</a></li><li role=none><a role=treeitem title="This task demonstrates how to configure your mesh for locality failover." href=/v1.16/docs/tasks/traffic-management/locality-load-balancing/failover/>Locality failover</a></li><li role=none><a role=treeitem title="This guide demonstrates how to configure locality distribution." href=/v1.16/docs/tasks/traffic-management/locality-load-balancing/distribute/>Locality weighted distribution</a></li><li role=none><a role=treeitem title="Cleanup steps for locality load balancing." href=/v1.16/docs/tasks/traffic-management/locality-load-balancing/cleanup/>Cleanup</a></li></ul></li><li role=treeitem aria-label=Ingress><button aria-hidden=true tabindex=-1></button><a title="Controlling ingress traffic for an Istio service mesh." href=/v1.16/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=/v1.16/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." href=/v1.16/docs/tasks/traffic-management/ingress/secure-ingress/>Secure Gateways</a></li><li role=none><a role=treeitem title="Describes how to configure SNI passthrough for an ingress gateway." href=/v1.16/docs/tasks/traffic-management/ingress/ingress-sni-passthrough/>Ingress Gateway without TLS Termination</a></li><li role=none><a role=treeitem title="Describes how to terminate TLS traffic at a sidecar without using an Ingress Gateway." href=/v1.16/docs/tasks/traffic-management/ingress/ingress-sidecar-tls-termination/>Ingress Sidecar TLS Termination</a></li><li role=none><a role=treeitem title="Describes how to configure a Kubernetes Ingress object to expose a service outside of the service mesh." href=/v1.16/docs/tasks/traffic-management/ingress/kubernetes-ingress/>Kubernetes Ingress</a></li><li role=none><a role=treeitem title="Describes how to configure the Kubernetes Gateway API with Istio." href=/v1.16/docs/tasks/traffic-management/ingress/gateway-api/>Kubernetes Gateway API</a></li></ul></li><li role=treeitem aria-label=Egress><button aria-hidden=true tabindex=-1></button><a title="Controlling egress traffic for an Istio service mesh." href=/v1.16/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=/v1.16/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=/v1.16/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=/v1.16/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=/v1.16/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=/v1.16/docs/tasks/traffic-management/egress/wildcard-egress-hosts/>Egress using Wildcard Hosts</a></li><li role=none><a role=treeitem title="Shows how to configure Istio for Kubernetes External Services." href=/v1.16/docs/tasks/traffic-management/egress/egress-kubernetes-services/>Kubernetes Services for Egress Traffic</a></li><li role=none><a role=treeitem title="Describes how to configure Istio to let applications use an external HTTPS proxy." href=/v1.16/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 tabindex=-1></button><a title="Demonstrates how to secure the mesh." href=/v1.16/docs/tasks/security/>Security</a><ul role=group aria-expanded=false><li role=treeitem aria-label="Certificate Management"><button aria-hidden=true tabindex=-1></button><a title="Management of the certificates in Istio." href=/v1.16/docs/tasks/security/cert-management/>Certificate Management</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Shows how system administrators can configure Istio's CA with a root certificate, signing certificate and key." href=/v1.16/docs/tasks/security/cert-management/plugin-ca-cert/>Plug in CA Certificates</a></li><li role=none><a role=treeitem title="Shows how to use a Custom Certificate Authority (that integrates with the Kubernetes CSR API) to provision Istio workload certificates (Experimental)" href=/v1.16/docs/tasks/security/cert-management/custom-ca-k8s/>Custom CA Integration using Kubernetes CSR *</a></li></ul></li><li role=treeitem aria-label=Authentication><button aria-hidden=true tabindex=-1></button><a title="Controlling mutual TLS and end-user authentication for mesh services." href=/v1.16/docs/tasks/security/authentication/>Authentication</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 set up mutual TLS and basic end-user authentication." href=/v1.16/docs/tasks/security/authentication/authn-policy/>Authentication Policy</a></li><li role=none><a role=treeitem title="Shows you how to use Istio authentication policy to route requests based on JWT claims (Experimental)" href=/v1.16/docs/tasks/security/authentication/jwt-route/>JWT claim based routing *</a></li><li role=none><a role=treeitem title="Shows you how to incrementally migrate your Istio services to mutual TLS." href=/v1.16/docs/tasks/security/authentication/mtls-migration/>Mutual TLS Migration</a></li></ul></li><li role=treeitem aria-label=Authorization><button aria-hidden=true tabindex=-1></button><a title="Shows how to control access to Istio services." href=/v1.16/docs/tasks/security/authorization/>Authorization</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Shows how to set up access control for HTTP traffic." href=/v1.16/docs/tasks/security/authorization/authz-http/>HTTP Traffic</a></li><li role=none><a role=treeitem title="Shows how to set up access control for TCP traffic." href=/v1.16/docs/tasks/security/authorization/authz-tcp/>TCP Traffic</a></li><li role=none><a role=treeitem title="Shows how to set up access control for JWT token." href=/v1.16/docs/tasks/security/authorization/authz-jwt/>JWT Token</a></li><li role=none><a role=treeitem title="Shows how to integrate and delegate access control to an external authorization system." href=/v1.16/docs/tasks/security/authorization/authz-custom/>External Authorization</a></li><li role=none><a role=treeitem title="Shows how to set up access control to deny traffic explicitly." href=/v1.16/docs/tasks/security/authorization/authz-deny/>Explicit Deny</a></li><li role=none><a role=treeitem title="Shows how to set up access control on an ingress gateway." href=/v1.16/docs/tasks/security/authorization/authz-ingress/>Ingress Gateway</a></li><li role=none><a role=treeitem title="Shows how to migrate from one trust domain to another without changing authorization policy." href=/v1.16/docs/tasks/security/authorization/authz-td-migration/>Trust Domain Migration</a></li><li role=none><a role=treeitem title="Shows how to dry-run an authorization policy without enforcing it (Experimental)" href=/v1.16/docs/tasks/security/authorization/authz-dry-run/>Dry Run *</a></li></ul></li><li role=treeitem aria-label="TLS Configuration"><button aria-hidden=true tabindex=-1></button><a title="TLS configuration in Istio." href=/v1.16/docs/tasks/security/tls-configuration/>TLS Configuration</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Shows how to configure the minimum TLS version for Istio workloads." href=/v1.16/docs/tasks/security/tls-configuration/workload-min-tls-version/>Istio Workload Minimum TLS Version Configuration</a></li></ul></li></ul></li><li role=treeitem aria-label="Policy Enforcement"><button aria-hidden=true tabindex=-1></button><a title="Demonstrates policy enforcement features." href=/v1.16/docs/tasks/policy-enforcement/>Policy Enforcement</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 dynamically limit the traffic to a service." href=/v1.16/docs/tasks/policy-enforcement/rate-limit/>Enabling Rate Limits using Envoy</a></li></ul></li><li role=treeitem aria-label=Observability><button aria-hidden=true tabindex=-1></button><a title="Demonstrates how to collect telemetry information from the mesh." href=/v1.16/docs/tasks/observability/>Observability</a><ul role=group aria-expanded=false><li role=none><a role=treeitem title="This task shows you how to configure the Telemetry API." href=/v1.16/docs/tasks/observability/telemetry/>Telemetry API</a></li><li role=treeitem aria-label=Metrics><button aria-hidden=true tabindex=-1></button><a title="Demonstrates the collection and querying of metrics within Istio." href=/v1.16/docs/tasks/observability/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 metrics for TCP services." href=/v1.16/docs/tasks/observability/metrics/tcp-metrics/>Collecting Metrics for TCP Services</a></li><li role=none><a role=treeitem title="This task shows you how to customize the Istio metrics." href=/v1.16/docs/tasks/observability/metrics/customize-metrics/>Customizing Istio Metrics</a></li><li role=none><a role=treeitem title="This task shows you how to improve telemetry by grouping requests and responses by their type." href=/v1.16/docs/tasks/observability/metrics/classify-metrics/>Classifying Metrics Based on Request or Response</a></li><li role=none><a role=treeitem title="This task shows you how to query for Istio Metrics using Prometheus." href=/v1.16/docs/tasks/observability/metrics/querying-metrics/>Querying Metrics from Prometheus</a></li><li role=none><a role=treeitem title="This task shows you how to set up and use the Istio Dashboard to monitor mesh traffic." href=/v1.16/docs/tasks/observability/metrics/using-istio-dashboard/>Visualizing Metrics with Grafana</a></li></ul></li><li role=treeitem aria-label=Logs><button aria-hidden=true tabindex=-1></button><a title="Demonstrates the collection of logs within Istio." href=/v1.16/docs/tasks/observability/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 Envoy proxies to print access logs to their standard output." href=/v1.16/docs/tasks/observability/logs/access-log/>Envoy Access Logs</a></li><li role=none><a role=treeitem title="This task shows you how to configure Envoy proxies to send access logs with OpenTelemetry collector." href=/v1.16/docs/tasks/observability/logs/otel-provider/>OpenTelemetry</a></li></ul></li><li role=treeitem aria-label="Distributed Tracing"><button aria-hidden=true tabindex=-1></button><a title="This task shows you how to configure Istio-enabled applications to collect trace spans." href=/v1.16/docs/tasks/observability/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=/v1.16/docs/tasks/observability/distributed-tracing/overview/>Overview</a></li><li role=none><a role=treeitem title="Learn how to configure the proxies to send tracing requests to Apache SkyWalking." href=/v1.16/docs/tasks/observability/distributed-tracing/skywalking/>Apache SkyWalking</a></li><li role=none><a role=treeitem title="Learn how to configure the proxies to send tracing requests to Jaeger." href=/v1.16/docs/tasks/observability/distributed-tracing/jaeger/>Jaeger</a></li><li role=none><a role=treeitem title="Learn how to configure the proxies to send OpenCensus-formatted spans to OpenTelemetry Collector." href=/v1.16/docs/tasks/observability/distributed-tracing/opencensusagent/>OpenCensus Agent</a></li><li role=none><a role=treeitem title="Learn how to configure the proxies to send tracing requests to Zipkin." href=/v1.16/docs/tasks/observability/distributed-tracing/zipkin/>Zipkin</a></li><li role=none><a role=treeitem title="How to configure tracing options using MeshConfig and pod annotations (Beta/Experimental)" href=/v1.16/docs/tasks/observability/distributed-tracing/mesh-and-proxy-config/>Configure tracing using MeshConfig and Pod annotations *</a></li><li role=none><a role=treeitem title="How to configure the proxies to send tracing requests to Lightstep." href=/v1.16/docs/tasks/observability/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=/v1.16/docs/tasks/observability/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=/v1.16/docs/tasks/observability/gateways/>Remotely Accessing Telemetry Addons</a></li></ul></li><li role=treeitem aria-label=Extensibility><button aria-hidden=true tabindex=-1></button><a title="Demonstrates how to extend mesh behavior." href=/v1.16/docs/tasks/extensibility/>Extensibility</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Describes how to make remote WebAssembly modules available in the mesh (Alpha)" href=/v1.16/docs/tasks/extensibility/wasm-module-distribution/>Distributing WebAssembly Modules *</a></li></ul></li></ul></li><li role=treeitem aria-label=Examples><a class=main title="A variety of fully working example uses for Istio that you can experiment with." href=/v1.16/docs/examples/>Examples</a><ul role=group aria-expanded=true><li role=none><a role=treeitem title="Deploys a sample application composed of four separate microservices used to demonstrate various Istio features." href=/v1.16/docs/examples/bookinfo/>Bookinfo Application</a></li><li role=none><a role=treeitem title="Run the Bookinfo application with a MySQL service running on a virtual machine within your mesh." href=/v1.16/docs/examples/virtual-machines/>Bookinfo with a Virtual Machine</a></li><li role=treeitem aria-label="Learn Microservices using Kubernetes and Istio"><button aria-hidden=true tabindex=-1></button><a title="This modular tutorial provides new users with hands-on experience using Istio for common microservices scenarios, one step at a time." href=/v1.16/docs/examples/microservices-istio/>Learn Microservices using Kubernetes and Istio</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title href=/v1.16/docs/examples/microservices-istio/prereq/>Prerequisites</a></li><li role=none><a role=treeitem title href=/v1.16/docs/examples/microservices-istio/setup-kubernetes-cluster/>Set up a Kubernetes Cluster</a></li><li role=none><a role=treeitem title href=/v1.16/docs/examples/microservices-istio/setup-local-computer/>Set up a Local Computer</a></li><li role=none><a role=treeitem title href=/v1.16/docs/examples/microservices-istio/single/>Run a Microservice Locally</a></li><li role=none><a role=treeitem title href=/v1.16/docs/examples/microservices-istio/package-service/>Run ratings in Docker</a></li><li role=none><a role=treeitem title href=/v1.16/docs/examples/microservices-istio/bookinfo-kubernetes/>Run Bookinfo with Kubernetes</a></li><li role=none><a role=treeitem title href=/v1.16/docs/examples/microservices-istio/production-testing/>Test in production</a></li><li role=none><a role=treeitem title href=/v1.16/docs/examples/microservices-istio/add-new-microservice-version/>Add a new version of reviews</a></li><li role=none><a role=treeitem title href=/v1.16/docs/examples/microservices-istio/add-istio/>Enable Istio on productpage</a></li><li role=none><a role=treeitem title href=/v1.16/docs/examples/microservices-istio/enable-istio-all-microservices/>Enable Istio on all the microservices</a></li><li role=none><a role=treeitem title href=/v1.16/docs/examples/microservices-istio/istio-ingress-gateway/>Configure Istio Ingress Gateway</a></li><li role=none><a role=treeitem title href=/v1.16/docs/examples/microservices-istio/logs-istio/>Monitoring with Istio</a></li></ul></li></ul></li><li role=treeitem aria-label=Operations><a class=main title="Concepts, tools, and techniques to deploy and manage an Istio mesh." href=/v1.16/docs/ops/>Operations</a><ul role=group aria-expanded=true><li role=treeitem aria-label=Deployment><button aria-hidden=true tabindex=-1></button><a title="Requirements, concepts, and considerations for setting up an Istio deployment." href=/v1.16/docs/ops/deployment/>Deployment</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Describes Istio's high-level architecture and design goals." href=/v1.16/docs/ops/deployment/architecture/>Architecture</a></li><li role=none><a role=treeitem title="Describes the options and considerations when configuring your Istio deployment." href=/v1.16/docs/ops/deployment/deployment-models/>Deployment Models</a></li><li role=none><a role=treeitem title="Describes Istio's high-level architecture for virtual machines." href=/v1.16/docs/ops/deployment/vm-architecture/>Virtual Machine Architecture</a></li><li role=none><a role=treeitem title="Istio performance and scalability summary." href=/v1.16/docs/ops/deployment/performance-and-scalability/>Performance and Scalability</a></li><li role=none><a role=treeitem title="Requirements of applications deployed in an Istio-enabled cluster." href=/v1.16/docs/ops/deployment/requirements/>Application Requirements</a></li></ul></li><li role=treeitem aria-label=Configuration><button aria-hidden=true tabindex=-1></button><a title="Advanced concepts and features for configuring a running Istio mesh." href=/v1.16/docs/ops/configuration/>Configuration</a><ul role=group aria-expanded=false><li role=treeitem aria-label="Mesh Configuration"><button aria-hidden=true tabindex=-1></button><a title="Helps you manage the global mesh configuration." href=/v1.16/docs/ops/configuration/mesh/>Mesh Configuration</a><ul role=group aria-expanded=false class=leaf-section><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=/v1.16/docs/ops/configuration/mesh/webhook/>Dynamic Admission Webhooks Overview</a></li><li role=none><a role=treeitem title="Describes how to wait until a resource reaches a given status of readiness." href=/v1.16/docs/ops/configuration/mesh/config-resource-ready/>Wait on Resource Status for Applied Configuration</a></li><li role=none><a role=treeitem title="Shows how to do health checking for Istio services." href=/v1.16/docs/ops/configuration/mesh/app-health-check/>Health Checking of Istio Services</a></li></ul></li><li role=treeitem aria-label="Traffic Management"><button aria-hidden=true tabindex=-1></button><a title="Helps you manage the networking aspects of a running mesh." href=/v1.16/docs/ops/configuration/traffic-management/>Traffic Management</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Information on how to specify protocols." href=/v1.16/docs/ops/configuration/traffic-management/protocol-selection/>Protocol Selection</a></li><li role=none><a role=treeitem title="How to configure TLS settings to secure network traffic." href=/v1.16/docs/ops/configuration/traffic-management/tls-configuration/>TLS Configuration</a></li><li role=none><a role=treeitem title="How Istio routes traffic through the mesh." href=/v1.16/docs/ops/configuration/traffic-management/traffic-routing/>Traffic Routing</a></li><li role=none><a role=treeitem title="How DNS interacts with Istio." href=/v1.16/docs/ops/configuration/traffic-management/dns/>DNS</a></li><li role=none><a role=treeitem title="How to configure gateway network topology (Alpha)" href=/v1.16/docs/ops/configuration/traffic-management/network-topologies/>Configuring Gateway Network Topology *</a></li><li role=none><a role=treeitem title="How to configure DNS proxying." href=/v1.16/docs/ops/configuration/traffic-management/dns-proxy/>DNS Proxying</a></li><li role=none><a role=treeitem title="How to configure how traffic is distributed among clusters in the mesh." href=/v1.16/docs/ops/configuration/traffic-management/multicluster/>Multi-cluster Traffic Management</a></li></ul></li><li role=treeitem aria-label=Security><button aria-hidden=true tabindex=-1></button><a title="Helps you manage the security aspects of a running mesh." href=/v1.16/docs/ops/configuration/security/>Security</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Shows common examples of using Istio security policy." href=/v1.16/docs/ops/configuration/security/security-policy-examples/>Security policy examples</a></li><li role=none><a role=treeitem title="Use hardened container images to reduce Istio's attack surface." href=/v1.16/docs/ops/configuration/security/harden-docker-images/>Harden Docker Container Images</a></li></ul></li><li role=treeitem aria-label=Observability><button aria-hidden=true tabindex=-1></button><a title="Helps you manage telemetry collection and visualization in a running mesh." href=/v1.16/docs/ops/configuration/telemetry/>Observability</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Fine-grained control of Envoy statistics." href=/v1.16/docs/ops/configuration/telemetry/envoy-stats/>Envoy Statistics</a></li><li role=none><a role=treeitem title="Configure Prometheus to monitor multicluster Istio." href=/v1.16/docs/ops/configuration/telemetry/monitoring-multicluster-prometheus/>Monitoring Multicluster Istio with Prometheus</a></li></ul></li><li role=treeitem aria-label=Extensibility><button aria-hidden=true tabindex=-1></button><a title="Helps you manage extensions to the service mesh." href=/v1.16/docs/ops/configuration/extensibility/>Extensibility</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Describes how Istio determines whether to pull Wasm modules or use cached versions (Alpha)" href=/v1.16/docs/ops/configuration/extensibility/wasm-pull-policy/>Pull Policy for WebAssembly Modules *</a></li></ul></li></ul></li><li role=treeitem aria-label="Best Practices"><button aria-hidden=true tabindex=-1></button><a title="Best practices for setting up and managing an Istio service mesh." href=/v1.16/docs/ops/best-practices/>Best Practices</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="General best practices when setting up an Istio service mesh." href=/v1.16/docs/ops/best-practices/deployment/>Deployment Best Practices</a></li><li role=none><a role=treeitem title="Configuration best practices to avoid networking or traffic management issues." href=/v1.16/docs/ops/best-practices/traffic-management/>Traffic Management Best Practices</a></li><li role=none><a role=treeitem title="Best practices for securing applications using Istio." href=/v1.16/docs/ops/best-practices/security/>Security Best Practices</a></li><li role=none><a role=treeitem title="Describes how to use image signatures to verify the provenance of Istio images." href=/v1.16/docs/ops/best-practices/image-signing-validation/>Image Signing and Validation</a></li><li role=none><a role=treeitem title="Best practices for observing applications using Istio." href=/v1.16/docs/ops/best-practices/observability/>Observability Best Practices</a></li></ul></li><li role=treeitem aria-label="Common Problems"><button aria-hidden=true tabindex=-1></button><a title="Describes how to identify and resolve common problems in Istio." href=/v1.16/docs/ops/common-problems/>Common Problems</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Techniques to address common Istio traffic management and network problems." href=/v1.16/docs/ops/common-problems/network-issues/>Traffic Management Problems</a></li><li role=none><a role=treeitem title="Techniques to address common Istio authentication, authorization, and general security-related problems." href=/v1.16/docs/ops/common-problems/security-issues/>Security Problems</a></li><li role=none><a role=treeitem title="Dealing with telemetry collection issues." href=/v1.16/docs/ops/common-problems/observability-issues/>Observability 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=/v1.16/docs/ops/common-problems/injection/>Sidecar Injection Problems</a></li><li role=none><a role=treeitem title="Describes how to resolve configuration validation problems." href=/v1.16/docs/ops/common-problems/validation/>Configuration Validation Problems</a></li></ul></li><li role=treeitem aria-label="Diagnostic Tools"><button aria-hidden=true tabindex=-1></button><a title="Tools and techniques to help troubleshoot an Istio mesh." href=/v1.16/docs/ops/diagnostic-tools/>Diagnostic Tools</a><ul role=group aria-expanded=false 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=/v1.16/docs/ops/diagnostic-tools/istioctl/>Using the Istioctl Command-line Tool</a></li><li role=none><a role=treeitem title="Describes tools and techniques to diagnose Envoy configuration issues related to traffic management." href=/v1.16/docs/ops/diagnostic-tools/proxy-cmd/>Debugging Envoy and Istiod</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=/v1.16/docs/ops/diagnostic-tools/istioctl-describe/>Understand your Mesh with Istioctl Describe</a></li><li role=none><a role=treeitem title="Shows you how to use istioctl analyze to identify potential issues with your configuration." href=/v1.16/docs/ops/diagnostic-tools/istioctl-analyze/>Diagnose your Configuration with Istioctl Analyze</a></li><li role=none><a role=treeitem title="Describes how to use ControlZ to get insight into a running istiod component." href=/v1.16/docs/ops/diagnostic-tools/controlz/>Istiod Introspection</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=/v1.16/docs/ops/diagnostic-tools/component-logging/>Component Logging</a></li><li role=none><a role=treeitem title="Describes tools and techniques to diagnose issues with Virtual Machines." href=/v1.16/docs/ops/diagnostic-tools/virtual-machines/>Debugging Virtual Machines</a></li><li role=none><a role=treeitem title="Describes tools and techniques to diagnose issues with multicluster and multi-network installations." href=/v1.16/docs/ops/diagnostic-tools/multicluster/>Troubleshooting Multicluster</a></li><li role=none><a role=treeitem title="Describes tools and techniques to diagnose issues using Istio with the CNI plugin." href=/v1.16/docs/ops/diagnostic-tools/cni/>Troubleshooting the Istio CNI plugin</a></li></ul></li><li role=treeitem aria-label=Integrations><button aria-hidden=true tabindex=-1></button><a title="Other software that Istio can integrate with to provide additional functionality." href=/v1.16/docs/ops/integrations/>Integrations</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Information on how to integrate with cert-manager." href=/v1.16/docs/ops/integrations/certmanager/>cert-manager</a></li><li role=none><a role=treeitem title="Information on how to integrate with Grafana to set up Istio dashboards." href=/v1.16/docs/ops/integrations/grafana/>Grafana</a></li><li role=none><a role=treeitem title="How to integrate with Jaeger." href=/v1.16/docs/ops/integrations/jaeger/>Jaeger</a></li><li role=none><a role=treeitem title="Information on how to integrate with Kiali." href=/v1.16/docs/ops/integrations/kiali/>Kiali</a></li><li role=none><a role=treeitem title="How to integrate with Prometheus." href=/v1.16/docs/ops/integrations/prometheus/>Prometheus</a></li><li role=none><a role=treeitem title="How to configure Istio to integrate with SPIRE to get cryptographic identities through Envoy's SDS API." href=/v1.16/docs/ops/integrations/spire/>SPIRE</a></li><li role=none><a role=treeitem title="How to integrate with Apache SkyWalking." href=/v1.16/docs/ops/integrations/skywalking/>Apache SkyWalking</a></li><li role=none><a role=treeitem title="How to integrate with Zipkin." href=/v1.16/docs/ops/integrations/zipkin/>Zipkin</a></li></ul></li></ul></li><li role=treeitem aria-label=Releases><a class=main title="Information relating to Istio releases." href=/v1.16/docs/releases/>Releases</a><ul role=group aria-expanded=true><li role=none><a role=treeitem title="List of features and their release stages." href=/v1.16/docs/releases/feature-stages/>Feature Status</a></li><li role=none><a role=treeitem title="What to do if you find a bug." href=/v1.16/docs/releases/bugs/>Reporting Bugs</a></li><li role=none><a role=treeitem title="How we handle security vulnerabilities." href=/v1.16/docs/releases/security-vulnerabilities/>Security Vulnerabilities</a></li><li role=none><a role=treeitem title="The currently supported Istio releases." href=/v1.16/docs/releases/supported-releases/>Supported Releases</a></li><li role=treeitem aria-label="Contribute Documentation"><button aria-hidden=true tabindex=-1></button><a title="Details how to create and maintain Istio documentation pages." href=/v1.16/docs/releases/contribute/>Contribute Documentation</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Shows you how to use GitHub to contribute to the Istio documentation." href=/v1.16/docs/releases/contribute/github/>Work with GitHub</a></li><li role=none><a role=treeitem title="Details how to contribute new documentation to Istio." href=/v1.16/docs/releases/contribute/add-content/>Add New Documentation</a></li><li role=none><a role=treeitem title="Details how to contribute retired documentation to Istio." href=/v1.16/docs/releases/contribute/remove-content/>Remove Retired Documentation</a></li><li role=none><a role=treeitem title="Explains how to locally build, test, serve, and preview the website." href=/v1.16/docs/releases/contribute/build/>Build and serve the website locally</a></li><li role=none><a role=treeitem title="Explains the front matter used in our documentation and the fields available." href=/v1.16/docs/releases/contribute/front-matter/>Front matter</a></li><li role=none><a role=treeitem title="Shows you how changes to the Istio documentation and website are reviewed and approved." href=/v1.16/docs/releases/contribute/review/>Documentation Review Process</a></li><li role=none><a role=treeitem title="Explains how to include code in your documentation." href=/v1.16/docs/releases/contribute/code-blocks/>Add Code Blocks</a></li><li role=none><a role=treeitem title="Explains the shortcodes available and how to use them." href=/v1.16/docs/releases/contribute/shortcodes/>Use Shortcodes</a></li><li role=none><a role=treeitem title="Explains the standard markup used to format Istio documentation." href=/v1.16/docs/releases/contribute/formatting/>Follow Formatting Standards</a></li><li role=none><a role=treeitem title="Explains the style conventions used in the Istio documentation." href=/v1.16/docs/releases/contribute/style-guide/>Style Guide</a></li><li role=none><a role=treeitem title="Explains the terminology standards used in the Istio documentation." href=/v1.16/docs/releases/contribute/terminology/>Terminology Standards</a></li><li role=none><a role=treeitem title="Provides assets and instructions to create diagrams for the Istio documentation." href=/v1.16/docs/releases/contribute/diagrams/>Diagram Creation Guidelines</a></li></ul></li><li role=none><a role=treeitem title="List of recent changes to this website." href=/v1.16/docs/releases/log/>Website Content Changes</a></li></ul></li><li role=treeitem aria-label=Reference><a class=main title="Detailed authoritative reference material such as command-line options, configuration options, and API calling parameters." href=/v1.16/docs/reference/>Reference</a><ul role=group aria-expanded=true><li role=treeitem aria-label=Configuration><button class=show aria-hidden=true tabindex=-1></button><a title="Detailed information on configuration options." href=/v1.16/docs/reference/config/>Configuration</a><ul role=group aria-expanded=true><li role=none><a role=treeitem title="Telemetry configuration for workloads." href=/v1.16/docs/reference/config/telemetry/>Telemetry</a></li><li role=none><a role=treeitem title="Describes the structure of messages generated by Istio analyzers." href=/v1.16/docs/reference/config/istio.analysis.v1alpha1/>Analysis Messages</a></li><li role=none><a role=treeitem title="Configuration affecting the service mesh as a whole." href=/v1.16/docs/reference/config/istio.mesh.v1alpha1/>Global Mesh Options</a></li><li role=none><a role=treeitem title="Configuration affecting Istio control plane installation version and shape." href=/v1.16/docs/reference/config/istio.operator.v1alpha1/>IstioOperator Options</a></li><li role=none><a role=treeitem title="Describes the role of the `status` field in configuration workflow." href=/v1.16/docs/reference/config/config-status/>Configuration Status Field</a></li><li role=treeitem aria-label="Proxy Extensions"><button aria-hidden=true tabindex=-1></button><a title="Describes how to configure Istio proxy extensions." href=/v1.16/docs/reference/config/proxy_extensions/>Proxy Extensions</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Extend the functionality provided by the Istio proxy through WebAssembly filters." href=/v1.16/docs/reference/config/proxy_extensions/wasm-plugin/>Wasm Plugin</a></li><li role=none><a role=treeitem title="Configuration for AccessLogPolicy Filter." href=/v1.16/docs/reference/config/proxy_extensions/accesslogpolicy/>AccessLogPolicy Config</a></li><li role=none><a role=treeitem title="Configuration for Attribute Generation plugin." href=/v1.16/docs/reference/config/proxy_extensions/attributegen/>AttributeGen Config</a></li><li role=none><a role=treeitem title="Configuration for Metadata Exchange Filter." href=/v1.16/docs/reference/config/proxy_extensions/metadata_exchange/>Metadata Exchange Config</a></li><li role=none><a role=treeitem title="Configuration for Stackdriver filter." href=/v1.16/docs/reference/config/proxy_extensions/stackdriver/>Stackdriver Config</a></li><li role=none><a role=treeitem title="Configuration for Stats Filter." href=/v1.16/docs/reference/config/proxy_extensions/stats/>Stats Config</a></li><li role=none><a role=treeitem title="How to enable telemetry generation with the Wasm runtime (Experimental)" href=/v1.16/docs/reference/config/proxy_extensions/wasm_telemetry/>Wasm-based Telemetry *</a></li></ul></li><li role=treeitem aria-label="Traffic Management"><button class=show aria-hidden=true tabindex=-1></button><a title="Describes how to configure HTTP/TCP routing features." href=/v1.16/docs/reference/config/networking/>Traffic Management</a><ul role=group aria-expanded=true class=leaf-section><li role=none><a role=treeitem title="Configuration affecting load balancing, outlier detection, etc." href=/v1.16/docs/reference/config/networking/destination-rule/>Destination Rule</a></li><li role=none><a role=treeitem title="Customizing Envoy configuration generated by Istio." href=/v1.16/docs/reference/config/networking/envoy-filter/>Envoy Filter</a></li><li role=none><a role=treeitem title="Configuration affecting edge load balancer." href=/v1.16/docs/reference/config/networking/gateway/>Gateway</a></li><li role=none><a role=treeitem title="Provides configuration for individual workloads." href=/v1.16/docs/reference/config/networking/proxy-config/>ProxyConfig</a></li><li role=none><a role=treeitem title="Configuration affecting service registry." href=/v1.16/docs/reference/config/networking/service-entry/>Service Entry</a></li><li role=none><a role=treeitem title="Configuration affecting network reachability of a sidecar." href=/v1.16/docs/reference/config/networking/sidecar/>Sidecar</a></li><li role=none><a role=treeitem title="Configuration affecting label/content routing, sni routing, etc." href=/v1.16/docs/reference/config/networking/virtual-service/>Virtual Service</a></li><li role=none><a role=treeitem title="Configuration affecting VMs onboarded into the mesh." href=/v1.16/docs/reference/config/networking/workload-entry/>Workload Entry</a></li><li role=none><a role=treeitem title="Describes a collection of workload instances." href=/v1.16/docs/reference/config/networking/workload-group/>Workload Group</a></li></ul></li><li role=treeitem aria-label=Security><button aria-hidden=true tabindex=-1></button><a title="Describes how to configure Istio's security features." href=/v1.16/docs/reference/config/security/>Security</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Configuration to validate JWT." href=/v1.16/docs/reference/config/security/jwt/>JWTRule</a></li><li role=none><a role=treeitem title="Peer authentication configuration for workloads." href=/v1.16/docs/reference/config/security/peer_authentication/>PeerAuthentication</a></li><li role=none><a role=treeitem title="Request authentication configuration for workloads." href=/v1.16/docs/reference/config/security/request_authentication/>RequestAuthentication</a></li><li role=none><a role=treeitem title="Configuration for access control on workloads." href=/v1.16/docs/reference/config/security/authorization-policy/>Authorization Policy</a></li><li role=none><a role=treeitem title="Describes the supported conditions in authorization policies." href=/v1.16/docs/reference/config/security/conditions/>Authorization Policy Conditions</a></li><li role=none><a role=treeitem title="Describes the supported normalizations in authorization policies." href=/v1.16/docs/reference/config/security/normalization/>Authorization Policy Normalization</a></li></ul></li><li role=treeitem aria-label="Common Types"><button aria-hidden=true tabindex=-1></button><a title="Describes common types in Istio API." href=/v1.16/docs/reference/config/type/>Common Types</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Definition of a workload selector." href=/v1.16/docs/reference/config/type/workload-selector/>Workload Selector</a></li></ul></li><li role=none><a role=treeitem title="Istio standard metrics exported by Istio telemetry." href=/v1.16/docs/reference/config/metrics/>Istio Standard Metrics</a></li><li role=none><a role=treeitem title="Resource annotations used by Istio." href=/v1.16/docs/reference/config/annotations/>Resource Annotations</a></li><li role=none><a role=treeitem title="Resource labels used by Istio." href=/v1.16/docs/reference/config/labels/>Resource Labels</a></li><li role=treeitem aria-label="Configuration Analysis Messages"><button aria-hidden=true tabindex=-1></button><a title="Documents the individual error and warning messages produced during configuration analysis." href=/v1.16/docs/reference/config/analysis/>Configuration Analysis Messages</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0136/>AlphaAnnotation</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/message-format/>Analyzer Message Format</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0109/>ConflictingMeshGatewayVirtualServiceHosts</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0110/>ConflictingSidecarWorkloadSelectors</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0116/>DeploymentAssociatedToMultipleServices</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0137/>DeploymentConflictingPorts</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0117/>DeploymentRequiresServiceAssociated</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0002/>Deprecated</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0135/>DeprecatedAnnotation</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0153/>EnvoyFilterUsesAddOperationIncorrectly</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0151/>EnvoyFilterUsesRelativeOperation</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0155/>EnvoyFilterUsesRelativeOperationWithProxyVersion</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0154/>EnvoyFilterUsesRemoveOperationIncorrectly</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0152/>EnvoyFilterUsesReplaceOperationIncorrectly</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0150/>ExternalNameServiceTypeInvalidPortName</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0104/>GatewayPortNotOnWorkload</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0001/>InternalError</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0125/>InvalidAnnotation</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0144/>InvalidApplicationUID</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0122/>InvalidRegexp</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0105/>IstioProxyImageMismatch</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0119/>JwtFailureDueToInvalidServicePortPrefix</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0143/>LocalhostListener</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0107/>MisplacedAnnotation</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0113/>MTLSPolicyConflict</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0111/>MultipleSidecarsWithoutWorkloadSelectors</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0123/>NamespaceMultipleInjectionLabels</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0102/>NamespaceNotInjected</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0127/>NoMatchingWorkloadsFound</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0128/>NoServerCertificateVerificationDestinationLevel</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0129/>NoServerCertificateVerificationPortLevel</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0103/>PodMissingProxy</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0118/>PortNameIsNotUnderNamingConvention</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0101/>ReferencedResourceNotFound</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0106/>SchemaValidationError</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0134/>ServiceEntryAddressesRequired</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0108/>UnknownAnnotation</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0112/>VirtualServiceDestinationPortSelectorRequired</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0132/>VirtualServiceHostNotFoundInGateway</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0131/>VirtualServiceIneffectiveMatch</a></li><li role=none><a role=treeitem title href=/v1.16/docs/reference/config/analysis/ist0130/>VirtualServiceUnreachableRule</a></li></ul></li></ul></li><li role=treeitem aria-label=Commands><button aria-hidden=true tabindex=-1></button><a title="Describes usage and options of the Istio commands and utilities." href=/v1.16/docs/reference/commands/>Commands</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Install and configure Istio CNI plugin on a node, detect and repair pod which is broken by race condition." href=/v1.16/docs/reference/commands/install-cni/>install-cni</a></li><li role=none><a role=treeitem title="Istio control interface." href=/v1.16/docs/reference/commands/istioctl/>istioctl</a></li><li role=none><a role=treeitem title="The Istio operator." href=/v1.16/docs/reference/commands/operator/>operator</a></li><li role=none><a role=treeitem title="Istio Pilot agent." href=/v1.16/docs/reference/commands/pilot-agent/>pilot-agent</a></li><li role=none><a role=treeitem title="Istio Pilot." href=/v1.16/docs/reference/commands/pilot-discovery/>pilot-discovery</a></li></ul></li><li role=none><a role=treeitem title="A glossary of common Istio terms." href=/v1.16/docs/reference/glossary/>Glossary</a></li></ul></li></ul></div></div></div></nav></div><div class=article-container><button id=sidebar-toggle class=main-navigation-toggle aria-label="Open sidebar"><svg class="icon hamburger-sidebar"><use xlink:href="/v1.16/img/icons.svg#hamburger-sidebar"/></svg>
Contents</button><article aria-labelledby=title><nav aria-label=Breadcrumb><ol><li><a href=/v1.16/docs/ title="Learn how to deploy, use, and operate Istio.">Documentation</a><svg class="icon breadcrumb-arrow"><use xlink:href="/v1.16/img/icons.svg#breadcrumb-arrow"/></svg></li><li><a href=/v1.16/docs/reference/ title="Detailed authoritative reference material such as command-line options, configuration options, and API calling parameters.">Reference</a><svg class="icon breadcrumb-arrow"><use xlink:href="/v1.16/img/icons.svg#breadcrumb-arrow"/></svg></li><li><a href=/v1.16/docs/reference/config/ title="Detailed information on configuration options.">Configuration</a><svg class="icon breadcrumb-arrow"><use xlink:href="/v1.16/img/icons.svg#breadcrumb-arrow"/></svg></li><li><a href=/v1.16/docs/reference/config/networking/ title="Describes how to configure HTTP/TCP routing features.">Traffic Management</a><svg class="icon breadcrumb-arrow"><use xlink:href="/v1.16/img/icons.svg#breadcrumb-arrow"/></svg></li><li>Sidecar</li></ol></nav><div class=title-area><div style=width:100%><h1 id=title>Sidecar</h1><p class=byline><span class=reading-time title="2655 words"><svg class="icon clock"><use xlink:href="/v1.16/img/icons.svg#clock"/></svg><span>&nbsp;</span>13 minute read</span>
<span>&nbsp;</span>
<span></span></p></div></div><nav class=toc-inlined aria-label="Table of Contents"><div><hr><ol><li role=none aria-label=Sidecar><a href=#Sidecar>Sidecar</a><li role=none aria-label=IstioIngressListener><a href=#IstioIngressListener>IstioIngressListener</a><li role=none aria-label=IstioEgressListener><a href=#IstioEgressListener>IstioEgressListener</a><li role=none aria-label=WorkloadSelector><a href=#WorkloadSelector>WorkloadSelector</a><li role=none aria-label=OutboundTrafficPolicy><a href=#OutboundTrafficPolicy>OutboundTrafficPolicy</a><li role=none aria-label=OutboundTrafficPolicy.Mode><a href=#OutboundTrafficPolicy-Mode>OutboundTrafficPolicy.Mode</a><li role=none aria-label=CaptureMode><a href=#CaptureMode>CaptureMode</a></ol><hr></div></nav><p><code>Sidecar</code> describes the configuration of the sidecar proxy that mediates
inbound and outbound communication to the workload instance it is attached to. By
default, Istio will program all sidecar proxies in the mesh with the
necessary configuration required to reach every workload instance in the mesh, as
well as accept traffic on all the ports associated with the
workload. The <code>Sidecar</code> configuration provides a way to fine tune the set of
ports, protocols that the proxy will accept when forwarding traffic to
and from the workload. In addition, it is possible to restrict the set
of services that the proxy can reach when forwarding outbound traffic
from workload instances.</p><p>Services and configuration in a mesh are organized into one or more
namespaces (e.g., a Kubernetes namespace or a CF org/space). A <code>Sidecar</code>
configuration in a namespace will apply to one or more workload instances in the same
namespace, selected using the <code>workloadSelector</code> field. In the absence of a
<code>workloadSelector</code>, it will apply to all workload instances in the same
namespace. When determining the <code>Sidecar</code> configuration to be applied to a
workload instance, preference will be given to the resource with a
<code>workloadSelector</code> that selects this workload instance, over a <code>Sidecar</code> configuration
without any <code>workloadSelector</code>.</p><p><strong>NOTE 1</strong>: <em><em>Each namespace can have only one <code>Sidecar</code>
configuration without any <code>workloadSelector</code></em> that specifies the
default for all pods in that namespace</em>. It is recommended to use
the name <code>default</code> for the namespace-wide sidecar. The behavior of
the system is undefined if more than one selector-less <code>Sidecar</code>
configurations exist in a given namespace. The behavior of the
system is undefined if two or more <code>Sidecar</code> configurations with a
<code>workloadSelector</code> select the same workload instance.</p><p><strong>NOTE 2</strong>: <em><em>A <code>Sidecar</code> configuration in the <code>MeshConfig</code>
<a href=/v1.16/docs/reference/config/istio.mesh.v1alpha1/#MeshConfig>root namespace</a>
will be applied by default to all namespaces without a <code>Sidecar</code>
configuration</em></em>. This global default <code>Sidecar</code> configuration should not have
any <code>workloadSelector</code>.</p><p>The example below declares a global default <code>Sidecar</code> configuration
in the root namespace called <code>istio-config</code>, that configures
sidecars in all namespaces to allow egress traffic only to other
workloads in the same namespace as well as to services in the
<code>istio-system</code> namespace.</p><div id=tabset-docsreferenceconfignetworkingsidecar-1 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkingsidecar-1-0-panel id=tabset-docsreferenceconfignetworkingsidecar-1-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkingsidecar-1-1-panel id=tabset-docsreferenceconfignetworkingsidecar-1-1-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkingsidecar-1-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-1-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: Sidecar
metadata:
name: default
namespace: istio-config
spec:
egress:
- hosts:
- &quot;./*&quot;
- &quot;istio-system/*&quot;
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkingsidecar-1-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-1-1-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1beta1
kind: Sidecar
metadata:
name: default
namespace: istio-config
spec:
egress:
- hosts:
- &quot;./*&quot;
- &quot;istio-system/*&quot;
</code></pre></div></div></div><p>The example below declares a <code>Sidecar</code> configuration in the
<code>prod-us1</code> namespace that overrides the global default defined
above, and configures the sidecars in the namespace to allow egress
traffic to public services in the <code>prod-us1</code>, <code>prod-apis</code>, and the
<code>istio-system</code> namespaces.</p><div id=tabset-docsreferenceconfignetworkingsidecar-2 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkingsidecar-2-0-panel id=tabset-docsreferenceconfignetworkingsidecar-2-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkingsidecar-2-1-panel id=tabset-docsreferenceconfignetworkingsidecar-2-1-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkingsidecar-2-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-2-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: Sidecar
metadata:
name: default
namespace: prod-us1
spec:
egress:
- hosts:
- &quot;prod-us1/*&quot;
- &quot;prod-apis/*&quot;
- &quot;istio-system/*&quot;
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkingsidecar-2-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-2-1-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1beta1
kind: Sidecar
metadata:
name: default
namespace: prod-us1
spec:
egress:
- hosts:
- &quot;prod-us1/*&quot;
- &quot;prod-apis/*&quot;
- &quot;istio-system/*&quot;
</code></pre></div></div></div><p>The following example declares a <code>Sidecar</code> configuration in the
<code>prod-us1</code> namespace for all pods with labels <code>app: ratings</code>
belonging to the <code>ratings.prod-us1</code> service. The workload accepts
inbound HTTP traffic on port 9080. The traffic is then forwarded to
the attached workload instance listening on a Unix domain
socket. In the egress direction, in addition to the <code>istio-system</code>
namespace, the sidecar proxies only HTTP traffic bound for port
9080 for services in the <code>prod-us1</code> namespace.</p><div id=tabset-docsreferenceconfignetworkingsidecar-3 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkingsidecar-3-0-panel id=tabset-docsreferenceconfignetworkingsidecar-3-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkingsidecar-3-1-panel id=tabset-docsreferenceconfignetworkingsidecar-3-1-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkingsidecar-3-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-3-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: Sidecar
metadata:
name: ratings
namespace: prod-us1
spec:
workloadSelector:
labels:
app: ratings
ingress:
- port:
number: 9080
protocol: HTTP
name: somename
defaultEndpoint: unix:///var/run/someuds.sock
egress:
- port:
number: 9080
protocol: HTTP
name: egresshttp
hosts:
- &quot;prod-us1/*&quot;
- hosts:
- &quot;istio-system/*&quot;
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkingsidecar-3-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-3-1-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1beta1
kind: Sidecar
metadata:
name: ratings
namespace: prod-us1
spec:
workloadSelector:
labels:
app: ratings
ingress:
- port:
number: 9080
protocol: HTTP
name: somename
defaultEndpoint: unix:///var/run/someuds.sock
egress:
- port:
number: 9080
protocol: HTTP
name: egresshttp
hosts:
- &quot;prod-us1/*&quot;
- hosts:
- &quot;istio-system/*&quot;
</code></pre></div></div></div><p>If the workload is deployed without IPTables-based traffic capture,
the <code>Sidecar</code> configuration is the only way to configure the ports
on the proxy attached to the workload instance. The following
example declares a <code>Sidecar</code> configuration in the <code>prod-us1</code>
namespace for all pods with labels <code>app: productpage</code> belonging to
the <code>productpage.prod-us1</code> service. Assuming that these pods are
deployed without IPtable rules (i.e. the <code>istio-init</code> container)
and the proxy metadata <code>ISTIO_META_INTERCEPTION_MODE</code> is set to
<code>NONE</code>, the specification, below, allows such pods to receive HTTP
traffic on port 9080 (wrapped inside Istio mutual TLS) and forward
it to the application listening on <code>127.0.0.1:8080</code>. It also allows
the application to communicate with a backing MySQL database on
<code>127.0.0.1:3306</code>, that then gets proxied to the externally hosted
MySQL service at <code>mysql.foo.com:3306</code>.</p><div id=tabset-docsreferenceconfignetworkingsidecar-4 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkingsidecar-4-0-panel id=tabset-docsreferenceconfignetworkingsidecar-4-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkingsidecar-4-1-panel id=tabset-docsreferenceconfignetworkingsidecar-4-1-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkingsidecar-4-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-4-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: Sidecar
metadata:
name: no-ip-tables
namespace: prod-us1
spec:
workloadSelector:
labels:
app: productpage
ingress:
- port:
number: 9080 # binds to proxy_instance_ip:9080 (0.0.0.0:9080, if no unicast IP is available for the instance)
protocol: HTTP
name: somename
defaultEndpoint: 127.0.0.1:8080
captureMode: NONE # not needed if metadata is set for entire proxy
egress:
- port:
number: 3306
protocol: MYSQL
name: egressmysql
captureMode: NONE # not needed if metadata is set for entire proxy
bind: 127.0.0.1
hosts:
- &quot;*/mysql.foo.com&quot;
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkingsidecar-4-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-4-1-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1beta1
kind: Sidecar
metadata:
name: no-ip-tables
namespace: prod-us1
spec:
workloadSelector:
labels:
app: productpage
ingress:
- port:
number: 9080 # binds to proxy_instance_ip:9080 (0.0.0.0:9080, if no unicast IP is available for the instance)
protocol: HTTP
name: somename
defaultEndpoint: 127.0.0.1:8080
captureMode: NONE # not needed if metadata is set for entire proxy
egress:
- port:
number: 3306
protocol: MYSQL
name: egressmysql
captureMode: NONE # not needed if metadata is set for entire proxy
bind: 127.0.0.1
hosts:
- &quot;*/mysql.foo.com&quot;
</code></pre></div></div></div><p>And the associated service entry for routing to <code>mysql.foo.com:3306</code></p><div id=tabset-docsreferenceconfignetworkingsidecar-5 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkingsidecar-5-0-panel id=tabset-docsreferenceconfignetworkingsidecar-5-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkingsidecar-5-1-panel id=tabset-docsreferenceconfignetworkingsidecar-5-1-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkingsidecar-5-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-5-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: ServiceEntry
metadata:
name: external-svc-mysql
namespace: ns1
spec:
hosts:
- mysql.foo.com
ports:
- number: 3306
name: mysql
protocol: MYSQL
location: MESH_EXTERNAL
resolution: DNS
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkingsidecar-5-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-5-1-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1beta1
kind: ServiceEntry
metadata:
name: external-svc-mysql
namespace: ns1
spec:
hosts:
- mysql.foo.com
ports:
- number: 3306
name: mysql
protocol: MYSQL
location: MESH_EXTERNAL
resolution: DNS
</code></pre></div></div></div><p>It is also possible to mix and match traffic capture modes in a single
proxy. For example, consider a setup where internal services are on the
<code>192.168.0.0/16</code> subnet. So, IP tables are setup on the VM to capture all
outbound traffic on <code>192.168.0.0/16</code> subnet. Assume that the VM has an
additional network interface on <code>172.16.0.0/16</code> subnet for inbound
traffic. The following <code>Sidecar</code> configuration allows the VM to expose a
listener on <code>172.16.1.32:80</code> (the VM&rsquo;s IP) for traffic arriving from the
<code>172.16.0.0/16</code> subnet.</p><p><strong>NOTE</strong>: The <code>ISTIO_META_INTERCEPTION_MODE</code> metadata on the
proxy in the VM should contain <code>REDIRECT</code> or <code>TPROXY</code> as its value,
implying that IP tables based traffic capture is active.</p><div id=tabset-docsreferenceconfignetworkingsidecar-6 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkingsidecar-6-0-panel id=tabset-docsreferenceconfignetworkingsidecar-6-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkingsidecar-6-1-panel id=tabset-docsreferenceconfignetworkingsidecar-6-1-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkingsidecar-6-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-6-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: Sidecar
metadata:
name: partial-ip-tables
namespace: prod-us1
spec:
workloadSelector:
labels:
app: productpage
ingress:
- bind: 172.16.1.32
port:
number: 80 # binds to 172.16.1.32:80
protocol: HTTP
name: somename
defaultEndpoint: 127.0.0.1:8080
captureMode: NONE
egress:
# use the system detected defaults
# sets up configuration to handle outbound traffic to services
# in 192.168.0.0/16 subnet, based on information provided by the
# service registry
- captureMode: IPTABLES
hosts:
- &quot;*/*&quot;
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkingsidecar-6-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-6-1-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1beta1
kind: Sidecar
metadata:
name: partial-ip-tables
namespace: prod-us1
spec:
workloadSelector:
labels:
app: productpage
ingress:
- bind: 172.16.1.32
port:
number: 80 # binds to 172.16.1.32:80
protocol: HTTP
name: somename
defaultEndpoint: 127.0.0.1:8080
captureMode: NONE
egress:
# use the system detected defaults
# sets up configuration to handle outbound traffic to services
# in 192.168.0.0/16 subnet, based on information provided by the
# service registry
- captureMode: IPTABLES
hosts:
- &quot;*/*&quot;
</code></pre></div></div></div><p>The following example declares a <code>Sidecar</code> configuration in the
<code>prod-us1</code> namespace for all pods with labels <code>app: ratings</code>
belonging to the <code>ratings.prod-us1</code> service. The service accepts
inbound HTTPS traffic on port 8443 and the sidecar proxy terminates
one way TLS using the given server certificates.
The traffic is then forwarded to the attached workload instance
listening on a Unix domain socket.
It is expected that PeerAuthentication policy would be configured
in order to set mTLS mode to &ldquo;DISABLE&rdquo; on specific
ports.
In this example, the mTLS mode is disabled on PORT 80.
This feature is currently experimental.</p><div id=tabset-docsreferenceconfignetworkingsidecar-7 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkingsidecar-7-0-panel id=tabset-docsreferenceconfignetworkingsidecar-7-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1 aria-controls=tabset-docsreferenceconfignetworkingsidecar-7-1-panel id=tabset-docsreferenceconfignetworkingsidecar-7-1-tab role=tab><span>v1</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkingsidecar-7-2-panel id=tabset-docsreferenceconfignetworkingsidecar-7-2-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkingsidecar-7-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-7-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: Sidecar
metadata:
name: ratings
namespace: prod-us1
spec:
workloadSelector:
labels:
app: ratings
ingress:
- port:
number: 80
protocol: HTTPS
name: somename
defaultEndpoint: unix:///var/run/someuds.sock
tls:
mode: SIMPLE
privateKey: &quot;/etc/certs/privatekey.pem&quot;
serverCertificate: &quot;/etc/certs/servercert.pem&quot;
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkingsidecar-7-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-7-1-tab><pre><code class=language-yaml>apiVersion: v1
kind: Service
metadata:
name: ratings
labels:
app: ratings
service: ratings
spec:
ports:
- port: 8443
name: https
targetPort: 80
selector:
app: ratings
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkingsidecar-7-2-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkingsidecar-7-2-tab><pre><code class=language-yaml>apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
name: ratings-peer-auth
namespace: prod-us1
spec:
selector:
matchLabels:
app: ratings
mtls:
mode: STRICT
portLevelMtls:
80:
mode: DISABLE
</code></pre></div></div></div><h2 id=Sidecar>Sidecar</h2><section><p><code>Sidecar</code> describes the configuration of the sidecar proxy that mediates
inbound and outbound communication of the workload instance to which it is
attached.</p><table class=message-fields><thead><tr><th>Field</th><th>Type</th><th>Description</th><th>Required</th></tr></thead><tbody><tr id=Sidecar-workload_selector><td><code>workloadSelector</code></td><td><code><a href=#WorkloadSelector>WorkloadSelector</a></code></td><td><p>Criteria used to select the specific set of pods/VMs on which this
<code>Sidecar</code> configuration should be applied. If omitted, the <code>Sidecar</code>
configuration will be applied to all workload instances in the same namespace.</p></td><td>No</td></tr><tr id=Sidecar-ingress><td><code>ingress</code></td><td><code><a href=#IstioIngressListener>IstioIngressListener[]</a></code></td><td><p>Ingress specifies the configuration of the sidecar for processing
inbound traffic to the attached workload instance. If omitted, Istio will
automatically configure the sidecar based on the information about the workload
obtained from the orchestration platform (e.g., exposed ports, services,
etc.). If specified, inbound ports are configured if and only if the
workload instance is associated with a service.</p></td><td>No</td></tr><tr id=Sidecar-egress><td><code>egress</code></td><td><code><a href=#IstioEgressListener>IstioEgressListener[]</a></code></td><td><p>Egress specifies the configuration of the sidecar for processing
outbound traffic from the attached workload instance to other
services in the mesh. If not specified, inherits the system
detected defaults from the namespace-wide or the global default Sidecar.</p></td><td>No</td></tr><tr id=Sidecar-outbound_traffic_policy><td><code>outboundTrafficPolicy</code></td><td><code><a href=#OutboundTrafficPolicy>OutboundTrafficPolicy</a></code></td><td><p>Configuration for the outbound traffic policy. If your
application uses one or more external services that are not known
apriori, setting the policy to <code>ALLOW_ANY</code> will cause the
sidecars to route any unknown traffic originating from the
application to its requested destination. If not specified,
inherits the system detected defaults from the namespace-wide or
the global default Sidecar.</p></td><td>No</td></tr></tbody></table></section><h2 id=IstioIngressListener>IstioIngressListener</h2><section><p><code>IstioIngressListener</code> specifies the properties of an inbound
traffic listener on the sidecar proxy attached to a workload instance.</p><table class=message-fields><thead><tr><th>Field</th><th>Type</th><th>Description</th><th>Required</th></tr></thead><tbody><tr id=IstioIngressListener-port><td><code>port</code></td><td><code><a href=/v1.16/docs/reference/config/networking/gateway/#Port>Port</a></code></td><td><p>The port associated with the listener.</p></td><td>Yes</td></tr><tr id=IstioIngressListener-bind><td><code>bind</code></td><td><code>string</code></td><td><p>The IP(IPv4 or IPv6) to which the listener should be bound.
Unix domain socket addresses are not allowed in
the bind field for ingress listeners. If omitted, Istio will
automatically configure the defaults based on imported services
and the workload instances to which this configuration is applied
to.</p></td><td>No</td></tr><tr id=IstioIngressListener-capture_mode><td><code>captureMode</code></td><td><code><a href=#CaptureMode>CaptureMode</a></code></td><td><p>The captureMode option dictates how traffic to the listener is
expected to be captured (or not).</p></td><td>No</td></tr><tr id=IstioIngressListener-default_endpoint><td><code>defaultEndpoint</code></td><td><code>string</code></td><td><p>The IP endpoint or Unix domain socket to which
traffic should be forwarded to. This configuration can be used to
redirect traffic arriving at the bind <code>IP:Port</code> on the sidecar to a <code>localhost:port</code>
or Unix domain socket where the application workload instance is listening for
connections. Arbitrary IPs are not supported. Format should be one of
<code>127.0.0.1:PORT</code>, <code>[::1]:PORT</code> (forward to localhost),
<code>0.0.0.0:PORT</code>, <code>[::]:PORT</code> (forward to the instance IP),
or <code>unix:///path/to/socket</code> (forward to Unix domain socket).</p></td><td>Yes</td></tr><tr id=IstioIngressListener-tls><td><code>tls</code></td><td><code><a href=/v1.16/docs/reference/config/networking/gateway/#ServerTLSSettings>ServerTLSSettings</a></code></td><td><p>Set of TLS related options that will enable TLS termination on the
sidecar for requests originating from outside the mesh.
Currently supports only SIMPLE and MUTUAL TLS modes.</p></td><td>No</td></tr></tbody></table></section><h2 id=IstioEgressListener>IstioEgressListener</h2><section><p><code>IstioEgressListener</code> specifies the properties of an outbound traffic
listener on the sidecar proxy attached to a workload instance.</p><table class=message-fields><thead><tr><th>Field</th><th>Type</th><th>Description</th><th>Required</th></tr></thead><tbody><tr id=IstioEgressListener-port><td><code>port</code></td><td><code><a href=/v1.16/docs/reference/config/networking/gateway/#Port>Port</a></code></td><td><p>The port associated with the listener. If using Unix domain socket,
use 0 as the port number, with a valid protocol. The port if
specified, will be used as the default destination port associated
with the imported hosts. If the port is omitted, Istio will infer the
listener ports based on the imported hosts. Note that when multiple
egress listeners are specified, where one or more listeners have
specific ports while others have no port, the hosts exposed on a
listener port will be based on the listener with the most specific
port.</p></td><td>No</td></tr><tr id=IstioEgressListener-bind><td><code>bind</code></td><td><code>string</code></td><td><p>The IP(IPv4 or IPv6) or the Unix domain socket to which the listener should be bound
to. Port MUST be specified if bind is not empty. Format: IPv4 or IPv6 address formats or
<code>unix:///path/to/uds</code> or <code>unix://@foobar</code> (Linux abstract namespace). If
omitted, Istio will automatically configure the defaults based on imported
services, the workload instances to which this configuration is applied to and
the captureMode. If captureMode is <code>NONE</code>, bind will default to
127.0.0.1.</p></td><td>No</td></tr><tr id=IstioEgressListener-capture_mode><td><code>captureMode</code></td><td><code><a href=#CaptureMode>CaptureMode</a></code></td><td><p>When the bind address is an IP, the captureMode option dictates
how traffic to the listener is expected to be captured (or not).
captureMode must be DEFAULT or <code>NONE</code> for Unix domain socket binds.</p></td><td>No</td></tr><tr id=IstioEgressListener-hosts><td><code>hosts</code></td><td><code>string[]</code></td><td><p>One or more service hosts exposed by the listener
in <code>namespace/dnsName</code> format. Services in the specified namespace
matching <code>dnsName</code> will be exposed.
The corresponding service can be a service in the service registry
(e.g., a Kubernetes or cloud foundry service) or a service specified
using a <code>ServiceEntry</code> or <code>VirtualService</code> configuration. Any
associated <code>DestinationRule</code> in the same namespace will also be used.</p><p>The <code>dnsName</code> should be specified using FQDN format, optionally including
a wildcard character in the left-most component (e.g., <code>prod/*.example.com</code>).
Set the <code>dnsName</code> to <code>*</code> to select all services from the specified namespace
(e.g., <code>prod/*</code>).</p><p>The <code>namespace</code> can be set to <code>*</code>, <code>.</code>, or <code>~</code>, representing any, the current,
or no namespace, respectively. For example, <code>*/foo.example.com</code> selects the
service from any available namespace while <code>./foo.example.com</code> only selects
the service from the namespace of the sidecar. If a host is set to <code>*/*</code>,
Istio will configure the sidecar to be able to reach every service in the
mesh that is exported to the sidecar&rsquo;s namespace. The value <code>~/*</code> can be used
to completely trim the configuration for sidecars that simply receive traffic
and respond, but make no outbound connections of their own.</p><p>NOTE: Only services and configuration artifacts exported to the sidecar&rsquo;s
namespace (e.g., <code>exportTo</code> value of <code>*</code>) can be referenced.
Private configurations (e.g., <code>exportTo</code> set to <code>.</code>) will
not be available. Refer to the <code>exportTo</code> setting in <code>VirtualService</code>,
<code>DestinationRule</code>, and <code>ServiceEntry</code> configurations for details.</p></td><td>Yes</td></tr></tbody></table></section><h2 id=WorkloadSelector>WorkloadSelector</h2><section><p><code>WorkloadSelector</code> specifies the criteria used to determine if the
<code>Gateway</code>, <code>Sidecar</code>, <code>EnvoyFilter</code>, <code>ServiceEntry</code>, or <code>DestinationRule</code>
configuration can be applied to a proxy. The matching criteria
includes the metadata associated with a proxy, workload instance
info such as labels attached to the pod/VM, or any other info that
the proxy provides to Istio during the initial handshake. If
multiple conditions are specified, all conditions need to match in
order for the workload instance to be selected. Currently, only
label based selection mechanism is supported.</p><table class=message-fields><thead><tr><th>Field</th><th>Type</th><th>Description</th><th>Required</th></tr></thead><tbody><tr id=WorkloadSelector-labels><td><code>labels</code></td><td><code>map&lt;string,&nbsp;string></code></td><td><p>One or more labels that indicate a specific set of pods/VMs
on which the configuration should be applied. The scope of
label search is restricted to the configuration namespace in which the
the resource is present.</p></td><td>Yes</td></tr></tbody></table></section><h2 id=OutboundTrafficPolicy>OutboundTrafficPolicy</h2><section><p><code>OutboundTrafficPolicy</code> sets the default behavior of the sidecar for
handling outbound traffic from the application.
If your application uses one or more external
services that are not known apriori, setting the policy to <code>ALLOW_ANY</code>
will cause the sidecars to route any unknown traffic originating from
the application to its requested destination. Users are strongly
encouraged to use <code>ServiceEntry</code> configurations to explicitly declare any external
dependencies, instead of using <code>ALLOW_ANY</code>, so that traffic to these
services can be monitored.</p><table class=message-fields><thead><tr><th>Field</th><th>Type</th><th>Description</th><th>Required</th></tr></thead><tbody><tr id=OutboundTrafficPolicy-mode><td><code>mode</code></td><td><code><a href=#OutboundTrafficPolicy-Mode>Mode</a></code></td><td></td><td>No</td></tr></tbody></table></section><h2 id=OutboundTrafficPolicy-Mode>OutboundTrafficPolicy.Mode</h2><section><table class=enum-values><thead><tr><th>Name</th><th>Description</th></tr></thead><tbody><tr id=OutboundTrafficPolicy-Mode-REGISTRY_ONLY><td><code>REGISTRY_ONLY</code></td><td><p>Outbound traffic will be restricted to services defined in the
service registry as well as those defined through <code>ServiceEntry</code> configurations.</p></td></tr><tr id=OutboundTrafficPolicy-Mode-ALLOW_ANY><td><code>ALLOW_ANY</code></td><td><p>Outbound traffic to unknown destinations will be allowed, in case
there are no services or <code>ServiceEntry</code> configurations for the destination port.</p></td></tr></tbody></table></section><h2 id=CaptureMode>CaptureMode</h2><section><p><code>CaptureMode</code> describes how traffic to a listener is expected to be
captured. Applicable only when the listener is bound to an IP.</p><table class=enum-values><thead><tr><th>Name</th><th>Description</th></tr></thead><tbody><tr id=CaptureMode-DEFAULT><td><code>DEFAULT</code></td><td><p>The default capture mode defined by the environment.</p></td></tr><tr id=CaptureMode-IPTABLES><td><code>IPTABLES</code></td><td><p>Capture traffic using IPtables redirection.</p></td></tr><tr id=CaptureMode-NONE><td><code>NONE</code></td><td><p>No traffic capture. When used in an egress listener, the application is
expected to explicitly communicate with the listener port or Unix
domain socket. When used in an ingress listener, care needs to be taken
to ensure that the listener port is not in use by other processes on
the host.</p></td></tr></tbody></table></section></article><nav class=pagenav><div class=left><a title="Configuration affecting service registry." href=/v1.16/docs/reference/config/networking/service-entry/ class=next-link><svg class="icon left-arrow"><use xlink:href="/v1.16/img/icons.svg#left-arrow"/></svg>Service Entry</a></div><div class=right><a title="Configuration affecting label/content routing, sni routing, etc." href=/v1.16/docs/reference/config/networking/virtual-service/ class=next-link>Virtual Service<svg class="icon right-arrow"><use xlink:href="/v1.16/img/icons.svg#right-arrow"/></svg></a></div></nav><div id=feedback><div id=feedback-initial>Was this information useful?<br><button class="btn feedback" onclick='sendFeedback("en",1)'>Yes</button>
<button class="btn feedback" onclick='sendFeedback("en",0)'>No</button></div><div id=feedback-comment>Do you have any suggestions for improvement?<br><br><input id=feedback-textbox type=text placeholder='Help us improve...' data-lang=en></div><div id=feedback-thankyou>Thanks for your feedback!</div></div><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=Sidecar><a href=#Sidecar>Sidecar</a><li role=none aria-label=IstioIngressListener><a href=#IstioIngressListener>IstioIngressListener</a><li role=none aria-label=IstioEgressListener><a href=#IstioEgressListener>IstioEgressListener</a><li role=none aria-label=WorkloadSelector><a href=#WorkloadSelector>WorkloadSelector</a><li role=none aria-label=OutboundTrafficPolicy><a href=#OutboundTrafficPolicy>OutboundTrafficPolicy</a><li role=none aria-label=OutboundTrafficPolicy.Mode><a href=#OutboundTrafficPolicy-Mode>OutboundTrafficPolicy.Mode</a><li role=none aria-label=CaptureMode><a href=#CaptureMode>CaptureMode</a></ol></div></nav></div></main><footer class=footer><div class="footer-wrapper container-l"><div class="user-links footer-links"><a class=channel title='GitHub is where development takes place on Istio code' href=https://github.com/istio/community aria-label=GitHub><svg class="icon github"><use xlink:href="/v1.16/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"><svg class="icon drive"><use xlink:href="/v1.16/img/icons.svg#drive"/></svg></a><a class=channel title='Interactively discuss issues with the Istio community on Slack' href=https://slack.istio.io aria-label=slack><svg class="icon slack"><use xlink:href="/v1.16/img/icons.svg#slack"/></svg></a><a 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