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href=/v1.21/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=/v1.21/docs/setup/install/istioctl/>Install with Istioctl</a></li><li role=none><a role=treeitem title="Instructions to install and configure Istio in a Kubernetes cluster using Helm." href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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." href=/v1.21/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 across multiple control plane revisions." href=/v1.21/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=/v1.21/docs/setup/upgrade/canary/>Canary Upgrades</a></li><li role=none><a role=treeitem title="Upgrade or downgrade Istio in place." href=/v1.21/docs/setup/upgrade/in-place/>In-place Upgrades</a></li><li role=none><a role=treeitem title="Instructions to upgrade Istio using Helm." href=/v1.21/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=/v1.21/docs/setup/additional-setup/>More Guides</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Try Istio’s features quickly and easily." href=/v1.21/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=/v1.21/docs/setup/additional-setup/config-profiles/>Installation Configuration Profiles</a></li><li role=none><a role=treeitem title='How to configure "compatibility versions", to decouple behavioral changes from releases.' href=/v1.21/docs/setup/additional-setup/compatibility-versions/>Compatibility Versions</a></li><li role=none><a role=treeitem title="Install and customize Istio Gateways." href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/setup/additional-setup/customize-installation-helm/>Advanced Helm Chart Customization</a></li><li role=none><a role=treeitem title="Install and use Istio in Dual-Stack mode running on a Dual-Stack Kubernetes cluster." href=/v1.21/docs/setup/additional-setup/dual-stack/>Install Istio in Dual-Stack mode</a></li><li role=none><a role=treeitem title="Install and use Istio with the Pod Security admission controller." href=/v1.21/docs/setup/additional-setup/pod-security-admission/>Install Istio with Pod Security Admission</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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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 (Alpha)" href=/v1.21/docs/tasks/security/authentication/jwt-route/>JWT claim based routing *</a></li><li role=none><a role=treeitem title="Shows how users can copy their JWT claims to HTTP headers (Experimental)" href=/v1.21/docs/tasks/security/authentication/claim-to-header/>Copy JWT Claims to HTTP Headers *</a></li><li role=none><a role=treeitem title="Shows you how to incrementally migrate your Istio services to mutual TLS." href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/tasks/security/authorization/authz-ingress/>Ingress Access Control</a></li><li role=none><a role=treeitem title="Shows how to migrate from one trust domain to another without changing authorization policy." href=/v1.21/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 (Alpha)" href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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 (Alpha)" href=/v1.21/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=/v1.21/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 customize the Istio metrics with Telemetry API." href=/v1.21/docs/tasks/observability/metrics/telemetry-api/>Customizing Istio Metrics with Telemetry API</a></li><li role=none><a role=treeitem title="This task shows you how to configure Istio to collect metrics for TCP services." href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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 send access logs with Telemetry API." href=/v1.21/docs/tasks/observability/logs/telemetry-api/>Configure access logs with Telemetry API</a></li><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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/tasks/observability/distributed-tracing/overview/>Overview</a></li><li role=none><a role=treeitem title="How to configure tracing options using Telemetry API." href=/v1.21/docs/tasks/observability/distributed-tracing/telemetry-api/>Configure tracing with Telemetry API</a></li><li role=none><a role=treeitem title="Learn how to configure the proxies to send tracing requests to Apache SkyWalking." href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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." href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/examples/microservices-istio/prereq/>Prerequisites</a></li><li role=none><a role=treeitem title href=/v1.21/docs/examples/microservices-istio/setup-kubernetes-cluster/>Set up a Kubernetes Cluster</a></li><li role=none><a role=treeitem title href=/v1.21/docs/examples/microservices-istio/setup-local-computer/>Set up a Local Computer</a></li><li role=none><a role=treeitem title href=/v1.21/docs/examples/microservices-istio/single/>Run a Microservice Locally</a></li><li role=none><a role=treeitem title href=/v1.21/docs/examples/microservices-istio/package-service/>Run ratings in Docker</a></li><li role=none><a role=treeitem title href=/v1.21/docs/examples/microservices-istio/bookinfo-kubernetes/>Run Bookinfo with Kubernetes</a></li><li role=none><a role=treeitem title href=/v1.21/docs/examples/microservices-istio/production-testing/>Test in production</a></li><li role=none><a role=treeitem title href=/v1.21/docs/examples/microservices-istio/add-new-microservice-version/>Add a new version of reviews</a></li><li role=none><a role=treeitem title href=/v1.21/docs/examples/microservices-istio/add-istio/>Enable Istio on productpage</a></li><li role=none><a role=treeitem title href=/v1.21/docs/examples/microservices-istio/enable-istio-all-microservices/>Enable Istio on all the microservices</a></li><li role=none><a role=treeitem title href=/v1.21/docs/examples/microservices-istio/istio-ingress-gateway/>Configure Istio Ingress Gateway</a></li><li role=none><a role=treeitem title href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/ops/deployment/vm-architecture/>Virtual Machine Architecture</a></li><li role=none><a role=treeitem title="Istio performance and scalability summary." href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/ops/configuration/traffic-management/protocol-selection/>Protocol Selection</a></li><li role=none><a role=treeitem title="How to configure certificates within your mesh." href=/v1.21/docs/ops/configuration/traffic-management/manage-mesh-certificates/>Managing In-Mesh Certificates</a></li><li role=none><a role=treeitem title="How to configure TLS settings to secure network traffic." href=/v1.21/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=/v1.21/docs/ops/configuration/traffic-management/traffic-routing/>Traffic Routing</a></li><li role=none><a role=treeitem title="How DNS interacts with Istio." href=/v1.21/docs/ops/configuration/traffic-management/dns/>DNS</a></li><li role=none><a role=treeitem title="How to configure gateway network topology (Alpha)" href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/ops/configuration/telemetry/envoy-stats/>Envoy Statistics</a></li><li role=none><a role=treeitem title="Configure Prometheus to monitor multicluster Istio." href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/ops/common-problems/security-issues/>Security Problems</a></li><li role=none><a role=treeitem title="Dealing with telemetry collection issues." href=/v1.21/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=/v1.21/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=/v1.21/docs/ops/common-problems/validation/>Configuration Validation Problems</a></li><li role=none><a role=treeitem title="Resolve common problems with Istio upgrades." href=/v1.21/docs/ops/common-problems/upgrade-issues/>Upgrade 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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/ops/diagnostic-tools/istioctl-analyze/>Diagnose your Configuration with Istioctl Analyze</a></li><li role=none><a role=treeitem title="Learn how to use istioctl check-inject to confirm if Istio sidecar injection is properly enabled for your deployments." href=/v1.21/docs/ops/diagnostic-tools/check-inject/>Verifying Istio Sidecar Injection with Istioctl Check-Inject</a></li><li role=none><a role=treeitem title="Describes how to use ControlZ to get insight into a running istiod component." href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/ops/diagnostic-tools/cni/>Troubleshooting the Istio CNI plugin</a></li></ul></li><li role=treeitem aria-label="Ambient Mode"><button aria-hidden=true tabindex=-1></button><a title="Information for setting up and operating Istio in ambient mode." href=/v1.21/docs/ops/ambient/>Ambient Mode</a><ul role=group aria-expanded=false><li role=none><a role=treeitem title="How to deploy and install Istio in ambient mode." href=/v1.21/docs/ops/ambient/getting-started/>Getting Started with Ambient Mode</a></li><li role=treeitem aria-label="Installation Guide"><button aria-hidden=true tabindex=-1></button><a title="Installation guide for Istio Ambient mesh." href=/v1.21/docs/ops/ambient/install/>Installation Guide</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Install Istio in Ambient mode with Helm." href=/v1.21/docs/ops/ambient/install/helm-installation/>Install with Helm</a></li><li role=none><a role=treeitem title="Platform-specific prerequisites for installing Istio in ambient mode." href=/v1.21/docs/ops/ambient/install/platform-prerequisites/>Platform-Specific Prerequisites</a></li></ul></li><li role=treeitem aria-label="Upgrade Guide"><button aria-hidden=true tabindex=-1></button><a title="Upgrade guide for Istio Ambient mesh." href=/v1.21/docs/ops/ambient/upgrade/>Upgrade Guide</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Upgrading an ambient mode installation with Helm (Experimental)" href=/v1.21/docs/ops/ambient/upgrade/helm-upgrade/>Upgrade with Helm *</a></li></ul></li><li role=treeitem aria-label="Ambient Mode User Guides"><button aria-hidden=true tabindex=-1></button><a title="How to configure a mesh in ambient mode." href=/v1.21/docs/ops/ambient/usage/>Ambient Mode User Guides</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title='Understand and manage Istio&#39;s "zero-trust tunnel" proxy.' href=/v1.21/docs/ops/ambient/usage/ztunnel/>Layer 4 Networking & mTLS with Ztunnel</a></li><li role=none><a role=treeitem title="Gain the full set of Istio feature with optional waypoint proxies." href=/v1.21/docs/ops/ambient/usage/waypoint/>Layer 7 Networking & Services with Waypoint Proxies</a></li><li role=none><a role=treeitem title="Understand how traffic is redirected between pods and the ztunnel node proxy." href=/v1.21/docs/ops/ambient/usage/traffic-redirection/>Ztunnel traffic redirection</a></li></ul></li><li role=none><a role=treeitem title="A deep dive into the architecture of ambient mode." href=/v1.21/docs/ops/ambient/architecture/>Ambient Mode Architecture</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=/v1.21/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=/v1.21/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=/v1.21/docs/ops/integrations/grafana/>Grafana</a></li><li role=none><a role=treeitem title="How to integrate with Jaeger." href=/v1.21/docs/ops/integrations/jaeger/>Jaeger</a></li><li role=none><a role=treeitem title="Information on how to integrate with Kiali." href=/v1.21/docs/ops/integrations/kiali/>Kiali</a></li><li role=none><a role=treeitem title="How to integrate with Prometheus." href=/v1.21/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=/v1.21/docs/ops/integrations/spire/>SPIRE</a></li><li role=none><a role=treeitem title="How to integrate with Apache SkyWalking." href=/v1.21/docs/ops/integrations/skywalking/>Apache SkyWalking</a></li><li role=none><a role=treeitem title="How to integrate with Zipkin." href=/v1.21/docs/ops/integrations/zipkin/>Zipkin</a></li><li role=none><a role=treeitem title="How to integrate Istio with third party load balancers." href=/v1.21/docs/ops/integrations/loadbalancers/>Third Party Load Balancers</a></li></ul></li></ul></li><li role=treeitem aria-label=Releases><a class=main title="Information relating to Istio releases." href=/v1.21/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=/v1.21/docs/releases/feature-stages/>Feature Status</a></li><li role=none><a role=treeitem title="What to do if you find a bug." href=/v1.21/docs/releases/bugs/>Reporting Bugs</a></li><li role=none><a role=treeitem title="How we handle security vulnerabilities." href=/v1.21/docs/releases/security-vulnerabilities/>Security Vulnerabilities</a></li><li role=none><a role=treeitem title="The currently supported Istio releases." href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/reference/config/>Configuration</a><ul role=group aria-expanded=true><li role=none><a role=treeitem title="Telemetry configuration for workloads." href=/v1.21/docs/reference/config/telemetry/>Telemetry</a></li><li role=none><a role=treeitem title="Describes the structure of messages generated by Istio analyzers." href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/reference/config/proxy_extensions/wasm-plugin/>Wasm Plugin</a></li><li role=none><a role=treeitem title="Configuration for AccessLogPolicy Filter." href=/v1.21/docs/reference/config/proxy_extensions/accesslogpolicy/>AccessLogPolicy Config</a></li><li role=none><a role=treeitem title="Configuration for Stackdriver filter." href=/v1.21/docs/reference/config/proxy_extensions/stackdriver/>Stackdriver Config</a></li><li role=none><a role=treeitem title="Configuration for Stats Filter." href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/reference/config/networking/destination-rule/>Destination Rule</a></li><li role=none><a role=treeitem title="Customizing Envoy configuration generated by Istio." href=/v1.21/docs/reference/config/networking/envoy-filter/>Envoy Filter</a></li><li role=none><a role=treeitem title="Configuration affecting edge load balancer." href=/v1.21/docs/reference/config/networking/gateway/>Gateway</a></li><li role=none><a role=treeitem title="Provides configuration for individual workloads." href=/v1.21/docs/reference/config/networking/proxy-config/>ProxyConfig</a></li><li role=none><a role=treeitem title="Configuration affecting service registry." href=/v1.21/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=/v1.21/docs/reference/config/networking/sidecar/>Sidecar</a></li><li role=none><a role=treeitem title="Configuration affecting label/content routing, sni routing, etc." href=/v1.21/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=/v1.21/docs/reference/config/networking/workload-entry/>Workload Entry</a></li><li role=none><a role=treeitem title="Describes a collection of workload instances." href=/v1.21/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=/v1.21/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=/v1.21/docs/reference/config/security/jwt/>JWTRule</a></li><li role=none><a role=treeitem title="Peer authentication configuration for workloads." href=/v1.21/docs/reference/config/security/peer_authentication/>PeerAuthentication</a></li><li role=none><a role=treeitem title="Request authentication configuration for workloads." href=/v1.21/docs/reference/config/security/request_authentication/>RequestAuthentication</a></li><li role=none><a role=treeitem title="Configuration for access control on workloads." href=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/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=/v1.21/docs/reference/config/metrics/>Istio Standard Metrics</a></li><li role=none><a role=treeitem title="Resource annotations used by Istio." href=/v1.21/docs/reference/config/annotations/>Resource Annotations</a></li><li role=none><a role=treeitem title="Resource labels used by Istio." href=/v1.21/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=/v1.21/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=/v1.21/docs/reference/config/analysis/ist0136/>AlphaAnnotation</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/message-format/>Analyzer Message Format</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0109/>ConflictingMeshGatewayVirtualServiceHosts</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0110/>ConflictingSidecarWorkloadSelectors</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0159/>ConflictingTelemetryWorkloadSelectors</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0116/>DeploymentAssociatedToMultipleServices</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0137/>DeploymentConflictingPorts</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0002/>Deprecated</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0135/>DeprecatedAnnotation</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0153/>EnvoyFilterUsesAddOperationIncorrectly</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0151/>EnvoyFilterUsesRelativeOperation</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0155/>EnvoyFilterUsesRelativeOperationWithProxyVersion</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0154/>EnvoyFilterUsesRemoveOperationIncorrectly</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0152/>EnvoyFilterUsesReplaceOperationIncorrectly</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0164/>ExternalControlPlaneAddressIsNotAHostname</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0150/>ExternalNameServiceTypeInvalidPortName</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0162/>GatewayPortNotDefinedOnService</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0167/>IneffectivePolicy</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0166/>IneffectiveSelector</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0001/>InternalError</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0125/>InvalidAnnotation</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0144/>InvalidApplicationUID</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0163/>InvalidExternalControlPlaneConfig</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0161/>InvalidGatewayCredential</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0122/>InvalidRegexp</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0157/>InvalidTelemetryProvider</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0143/>LocalhostListener</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0107/>MisplacedAnnotation</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0111/>MultipleSidecarsWithoutWorkloadSelectors</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0160/>MultipleTelemetriesWithoutWorkloadSelectors</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0123/>NamespaceMultipleInjectionLabels</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0102/>NamespaceNotInjected</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0127/>NoMatchingWorkloadsFound</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0128/>NoServerCertificateVerificationDestinationLevel</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0129/>NoServerCertificateVerificationPortLevel</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0103/>PodMissingProxy</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0158/>PodsIstioProxyImageMismatchInNamespace</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0118/>PortNameIsNotUnderNamingConvention</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0101/>ReferencedResourceNotFound</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0106/>SchemaValidationError</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0134/>ServiceEntryAddressesRequired</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0108/>UnknownAnnotation</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0112/>VirtualServiceDestinationPortSelectorRequired</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0132/>VirtualServiceHostNotFoundInGateway</a></li><li role=none><a role=treeitem title href=/v1.21/docs/reference/config/analysis/ist0131/>VirtualServiceIneffectiveMatch</a></li><li role=none><a role=treeitem title href=/v1.21/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=/v1.21/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=/v1.21/docs/reference/commands/install-cni/>install-cni</a></li><li role=none><a role=treeitem title="Istio control interface." href=/v1.21/docs/reference/commands/istioctl/>istioctl</a></li><li role=none><a role=treeitem title="The Istio operator." href=/v1.21/docs/reference/commands/operator/>operator</a></li><li role=none><a role=treeitem title="Istio Pilot agent." href=/v1.21/docs/reference/commands/pilot-agent/>pilot-agent</a></li><li role=none><a role=treeitem title="Istio Pilot." href=/v1.21/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=/v1.21/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="/v1.21/img/icons.svg#hamburger-sidebar"/></svg>
Contents</button><article aria-labelledby=title><nav aria-label=Breadcrumb><ol><li><a href=/v1.21/docs/ title="Learn how to deploy, use, and operate Istio.">Documentation</a><svg class="icon breadcrumb-arrow"><use xlink:href="/v1.21/img/icons.svg#breadcrumb-arrow"/></svg></li><li><a href=/v1.21/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="/v1.21/img/icons.svg#breadcrumb-arrow"/></svg></li><li><a href=/v1.21/docs/reference/config/ title="Detailed information on configuration options.">Configuration</a><svg class="icon breadcrumb-arrow"><use xlink:href="/v1.21/img/icons.svg#breadcrumb-arrow"/></svg></li><li><a href=/v1.21/docs/reference/config/networking/ title="Describes how to configure HTTP/TCP routing features.">Traffic Management</a><svg class="icon breadcrumb-arrow"><use xlink:href="/v1.21/img/icons.svg#breadcrumb-arrow"/></svg></li><li>Gateway</li></ol></nav><div class=title-area><div style=width:100%><h1 id=title>Gateway</h1><p class=byline><span class=reading-time title="2487 words"><svg class="icon clock"><use xlink:href="/v1.21/img/icons.svg#clock"/></svg><span>&nbsp;</span>12 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=Gateway><a href=#Gateway>Gateway</a><li role=none aria-label=Server><a href=#Server>Server</a><li role=none aria-label=Port><a href=#Port>Port</a><li role=none aria-label=ServerTLSSettings><a href=#ServerTLSSettings>ServerTLSSettings</a><li role=none aria-label=ServerTLSSettings.TLSmode><a href=#ServerTLSSettings-TLSmode>ServerTLSSettings.TLSmode</a><li role=none aria-label=ServerTLSSettings.TLSProtocol><a href=#ServerTLSSettings-TLSProtocol>ServerTLSSettings.TLSProtocol</a></ol><hr></div></nav><p><code>Gateway</code> describes a load balancer operating at the edge of the mesh
receiving incoming or outgoing HTTP/TCP connections. The specification
describes a set of ports that should be exposed, the type of protocol to
use, SNI configuration for the load balancer, etc.</p><p>For example, the following Gateway configuration sets up a proxy to act
as a load balancer exposing port 80 and 9080 (http), 443 (https),
9443(https) and port 2379 (TCP) for ingress. The gateway will be
applied to the proxy running on a pod with labels <code>app: my-gateway-controller</code>. While Istio will configure the proxy to listen
on these ports, it is the responsibility of the user to ensure that
external traffic to these ports are allowed into the mesh.</p><div id=tabset-docsreferenceconfignetworkinggateway-1 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkinggateway-1-0-panel id=tabset-docsreferenceconfignetworkinggateway-1-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkinggateway-1-1-panel id=tabset-docsreferenceconfignetworkinggateway-1-1-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkinggateway-1-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-1-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: my-gateway
namespace: some-config-namespace
spec:
selector:
app: my-gateway-controller
servers:
- port:
number: 80
name: http
protocol: HTTP
hosts:
- uk.bookinfo.com
- eu.bookinfo.com
tls:
httpsRedirect: true # sends 301 redirect for http requests
- port:
number: 443
name: https-443
protocol: HTTPS
hosts:
- uk.bookinfo.com
- eu.bookinfo.com
tls:
mode: SIMPLE # enables HTTPS on this port
serverCertificate: /etc/certs/servercert.pem
privateKey: /etc/certs/privatekey.pem
- port:
number: 9443
name: https-9443
protocol: HTTPS
hosts:
- &quot;bookinfo-namespace/*.bookinfo.com&quot;
tls:
mode: SIMPLE # enables HTTPS on this port
credentialName: bookinfo-secret # fetches certs from Kubernetes secret
- port:
number: 9080
name: http-wildcard
protocol: HTTP
hosts:
- &quot;*&quot;
- port:
number: 2379 # to expose internal service via external port 2379
name: mongo
protocol: MONGO
hosts:
- &quot;*&quot;
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkinggateway-1-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-1-1-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1beta1
kind: Gateway
metadata:
name: my-gateway
namespace: some-config-namespace
spec:
selector:
app: my-gateway-controller
servers:
- port:
number: 80
name: http
protocol: HTTP
hosts:
- uk.bookinfo.com
- eu.bookinfo.com
tls:
httpsRedirect: true # sends 301 redirect for http requests
- port:
number: 443
name: https-443
protocol: HTTPS
hosts:
- uk.bookinfo.com
- eu.bookinfo.com
tls:
mode: SIMPLE # enables HTTPS on this port
serverCertificate: /etc/certs/servercert.pem
privateKey: /etc/certs/privatekey.pem
- port:
number: 9443
name: https-9443
protocol: HTTPS
hosts:
- &quot;bookinfo-namespace/*.bookinfo.com&quot;
tls:
mode: SIMPLE # enables HTTPS on this port
credentialName: bookinfo-secret # fetches certs from Kubernetes secret
- port:
number: 9080
name: http-wildcard
protocol: HTTP
hosts:
- &quot;*&quot;
- port:
number: 2379 # to expose internal service via external port 2379
name: mongo
protocol: MONGO
hosts:
- &quot;*&quot;
</code></pre></div></div></div><p>The Gateway specification above describes the L4-L6 properties of a load
balancer. A <code>VirtualService</code> can then be bound to a gateway to control
the forwarding of traffic arriving at a particular host or gateway port.</p><p>For example, the following VirtualService splits traffic for
<code>https://uk.bookinfo.com/reviews</code>, <code>https://eu.bookinfo.com/reviews</code>,
<code>http://uk.bookinfo.com:9080/reviews</code>,
<code>http://eu.bookinfo.com:9080/reviews</code> into two versions (prod and qa) of
an internal reviews service on port 9080. In addition, requests
containing the cookie &ldquo;user: dev-123&rdquo; will be sent to special port 7777
in the qa version. The same rule is also applicable inside the mesh for
requests to the &ldquo;reviews.prod.svc.cluster.local&rdquo; service. This rule is
applicable across ports 443, 9080. Note that <code>http://uk.bookinfo.com</code>
gets redirected to <code>https://uk.bookinfo.com</code> (i.e. 80 redirects to 443).</p><div id=tabset-docsreferenceconfignetworkinggateway-2 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkinggateway-2-0-panel id=tabset-docsreferenceconfignetworkinggateway-2-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkinggateway-2-1-panel id=tabset-docsreferenceconfignetworkinggateway-2-1-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkinggateway-2-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-2-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: bookinfo-rule
namespace: bookinfo-namespace
spec:
hosts:
- reviews.prod.svc.cluster.local
- uk.bookinfo.com
- eu.bookinfo.com
gateways:
- some-config-namespace/my-gateway
- mesh # applies to all the sidecars in the mesh
http:
- match:
- headers:
cookie:
exact: &quot;user=dev-123&quot;
route:
- destination:
port:
number: 7777
host: reviews.qa.svc.cluster.local
- match:
- uri:
prefix: /reviews/
route:
- destination:
port:
number: 9080 # can be omitted if it's the only port for reviews
host: reviews.prod.svc.cluster.local
weight: 80
- destination:
host: reviews.qa.svc.cluster.local
weight: 20
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkinggateway-2-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-2-1-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
name: bookinfo-rule
namespace: bookinfo-namespace
spec:
hosts:
- reviews.prod.svc.cluster.local
- uk.bookinfo.com
- eu.bookinfo.com
gateways:
- some-config-namespace/my-gateway
- mesh # applies to all the sidecars in the mesh
http:
- match:
- headers:
cookie:
exact: &quot;user=dev-123&quot;
route:
- destination:
port:
number: 7777
host: reviews.qa.svc.cluster.local
- match:
- uri:
prefix: /reviews/
route:
- destination:
port:
number: 9080 # can be omitted if it's the only port for reviews
host: reviews.prod.svc.cluster.local
weight: 80
- destination:
host: reviews.qa.svc.cluster.local
weight: 20
</code></pre></div></div></div><p>The following VirtualService forwards traffic arriving at (external)
port 27017 to internal Mongo server on port 5555. This rule is not
applicable internally in the mesh as the gateway list omits the
reserved name <code>mesh</code>.</p><div id=tabset-docsreferenceconfignetworkinggateway-3 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkinggateway-3-0-panel id=tabset-docsreferenceconfignetworkinggateway-3-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkinggateway-3-1-panel id=tabset-docsreferenceconfignetworkinggateway-3-1-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkinggateway-3-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-3-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: bookinfo-mongo
namespace: bookinfo-namespace
spec:
hosts:
- mongosvr.prod.svc.cluster.local # name of internal Mongo service
gateways:
- some-config-namespace/my-gateway # can omit the namespace if gateway is in same namespace as virtual service.
tcp:
- match:
- port: 27017
route:
- destination:
host: mongo.prod.svc.cluster.local
port:
number: 5555
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkinggateway-3-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-3-1-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
name: bookinfo-mongo
namespace: bookinfo-namespace
spec:
hosts:
- mongosvr.prod.svc.cluster.local # name of internal Mongo service
gateways:
- some-config-namespace/my-gateway # can omit the namespace if gateway is in same namespace as virtual service.
tcp:
- match:
- port: 27017
route:
- destination:
host: mongo.prod.svc.cluster.local
port:
number: 5555
</code></pre></div></div></div><p>It is possible to restrict the set of virtual services that can bind to
a gateway server using the namespace/hostname syntax in the hosts field.
For example, the following Gateway allows any virtual service in the ns1
namespace to bind to it, while restricting only the virtual service with
foo.bar.com host in the ns2 namespace to bind to it.</p><div id=tabset-docsreferenceconfignetworkinggateway-4 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkinggateway-4-0-panel id=tabset-docsreferenceconfignetworkinggateway-4-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkinggateway-4-1-panel id=tabset-docsreferenceconfignetworkinggateway-4-1-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkinggateway-4-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-4-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: my-gateway
namespace: some-config-namespace
spec:
selector:
app: my-gateway-controller
servers:
- port:
number: 80
name: http
protocol: HTTP
hosts:
- &quot;ns1/*&quot;
- &quot;ns2/foo.bar.com&quot;
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkinggateway-4-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-4-1-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1beta1
kind: Gateway
metadata:
name: my-gateway
namespace: some-config-namespace
spec:
selector:
app: my-gateway-controller
servers:
- port:
number: 80
name: http
protocol: HTTP
hosts:
- &quot;ns1/*&quot;
- &quot;ns2/foo.bar.com&quot;
</code></pre></div></div></div><h2 id=Gateway>Gateway</h2><section><p>Gateway describes a load balancer operating at the edge of the mesh
receiving incoming or outgoing HTTP/TCP connections.</p><table class=message-fields><thead><tr><th>Field</th><th>Type</th><th>Description</th><th>Required</th></tr></thead><tbody><tr id=Gateway-servers><td><code>servers</code></td><td><code><a href=#Server>Server[]</a></code></td><td><p>A list of server specifications.</p></td><td>No</td></tr><tr id=Gateway-selector><td><code>selector</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 this gateway configuration should be applied.
By default workloads are searched across all namespaces based on label selectors.
This implies that a gateway resource in the namespace &ldquo;foo&rdquo; can select pods in
the namespace &ldquo;bar&rdquo; based on labels.
This behavior can be controlled via the <code>PILOT_SCOPE_GATEWAY_TO_NAMESPACE</code>
environment variable in istiod. If this variable is set
to true, the scope of label search is restricted to the configuration
namespace in which the the resource is present. In other words, the Gateway
resource must reside in the same namespace as the gateway workload
instance.
If selector is nil, the Gateway will be applied to all workloads.</p></td><td>No</td></tr></tbody></table></section><h2 id=Server>Server</h2><section><p><code>Server</code> describes the properties of the proxy on a given load balancer
port. For example,</p><div id=tabset-docsreferenceconfignetworkinggateway-5 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkinggateway-5-0-panel id=tabset-docsreferenceconfignetworkinggateway-5-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkinggateway-5-1-panel id=tabset-docsreferenceconfignetworkinggateway-5-1-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkinggateway-5-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-5-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: my-ingress
spec:
selector:
app: my-ingressgateway
servers:
- port:
number: 80
name: http2
protocol: HTTP2
hosts:
- &quot;*&quot;
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkinggateway-5-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-5-1-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1beta1
kind: Gateway
metadata:
name: my-ingress
spec:
selector:
app: my-ingressgateway
servers:
- port:
number: 80
name: http2
protocol: HTTP2
hosts:
- &quot;*&quot;
</code></pre></div></div></div><p>Another example</p><div id=tabset-docsreferenceconfignetworkinggateway-6 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkinggateway-6-0-panel id=tabset-docsreferenceconfignetworkinggateway-6-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkinggateway-6-1-panel id=tabset-docsreferenceconfignetworkinggateway-6-1-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkinggateway-6-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-6-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: my-tcp-ingress
spec:
selector:
app: my-tcp-ingressgateway
servers:
- port:
number: 27018
name: mongo
protocol: MONGO
hosts:
- &quot;*&quot;
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkinggateway-6-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-6-1-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1beta1
kind: Gateway
metadata:
name: my-tcp-ingress
spec:
selector:
app: my-tcp-ingressgateway
servers:
- port:
number: 27018
name: mongo
protocol: MONGO
hosts:
- &quot;*&quot;
</code></pre></div></div></div><p>The following is an example of TLS configuration for port 443</p><div id=tabset-docsreferenceconfignetworkinggateway-7 role=tablist class=tabset><div class=tab-strip data-category-name=example><button aria-selected=true data-category-value=v1alpha3 aria-controls=tabset-docsreferenceconfignetworkinggateway-7-0-panel id=tabset-docsreferenceconfignetworkinggateway-7-0-tab role=tab><span>v1alpha3</span>
</button><button tabindex=-1 data-category-value=v1beta1 aria-controls=tabset-docsreferenceconfignetworkinggateway-7-1-panel id=tabset-docsreferenceconfignetworkinggateway-7-1-tab role=tab><span>v1beta1</span></button></div><div class=tab-content><div id=tabset-docsreferenceconfignetworkinggateway-7-0-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-7-0-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: my-tls-ingress
spec:
selector:
app: my-tls-ingressgateway
servers:
- port:
number: 443
name: https
protocol: HTTPS
hosts:
- &quot;*&quot;
tls:
mode: SIMPLE
credentialName: tls-cert
</code></pre></div><div hidden id=tabset-docsreferenceconfignetworkinggateway-7-1-panel role=tabpanel tabindex=0 aria-labelledby=tabset-docsreferenceconfignetworkinggateway-7-1-tab><pre><code class=language-yaml>apiVersion: networking.istio.io/v1beta1
kind: Gateway
metadata:
name: my-tls-ingress
spec:
selector:
app: my-tls-ingressgateway
servers:
- port:
number: 443
name: https
protocol: HTTPS
hosts:
- &quot;*&quot;
tls:
mode: SIMPLE
credentialName: tls-cert
</code></pre></div></div></div><table class=message-fields><thead><tr><th>Field</th><th>Type</th><th>Description</th><th>Required</th></tr></thead><tbody><tr id=Server-port><td><code>port</code></td><td><code><a href=#Port>Port</a></code></td><td><p>The Port on which the proxy should listen for incoming
connections.</p></td><td>Yes</td></tr><tr id=Server-bind><td><code>bind</code></td><td><code>string</code></td><td><p>The ip or the Unix domain socket to which the listener should be bound
to. Format: <code>x.x.x.x</code> or <code>unix:///path/to/uds</code> or <code>unix://@foobar</code>
(Linux abstract namespace). When using Unix domain sockets, the port
number should be 0.
This can be used to restrict the reachability of this server to be gateway internal only.
This is typically used when a gateway needs to communicate to another mesh service
e.g. publishing metrics. In such case, the server created with the
specified bind will not be available to external gateway clients.</p></td><td>No</td></tr><tr id=Server-hosts><td><code>hosts</code></td><td><code>string[]</code></td><td><p>One or more hosts exposed by this gateway.
While typically applicable to
HTTP services, it can also be used for TCP services using TLS with SNI.
A host is specified as a <code>dnsName</code> with an optional <code>namespace/</code> prefix.
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 <code>VirtualService</code> hosts from the
specified namespace (e.g.,<code>prod/*</code>).</p><p>The <code>namespace</code> can be set to <code>*</code> or <code>.</code>, representing any or the current
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. The default, if no <code>namespace/</code>
is specified, is <code>*/</code>, that is, select services from any namespace.
Any associated <code>DestinationRule</code> in the selected namespace will also be used.</p><p>A <code>VirtualService</code> must be bound to the gateway and must have one or
more hosts that match the hosts specified in a server. The match
could be an exact match or a suffix match with the server&rsquo;s hosts. For
example, if the server&rsquo;s hosts specifies <code>*.example.com</code>, a
<code>VirtualService</code> with hosts <code>dev.example.com</code> or <code>prod.example.com</code> will
match. However, a <code>VirtualService</code> with host <code>example.com</code> or
<code>newexample.com</code> will not match.</p><p>NOTE: Only virtual services exported to the gateway&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><tr id=Server-tls><td><code>tls</code></td><td><code><a href=#ServerTLSSettings>ServerTLSSettings</a></code></td><td><p>Set of TLS related options that govern the server&rsquo;s behavior. Use
these options to control if all http requests should be redirected to
https, and the TLS modes to use.</p></td><td>No</td></tr><tr id=Server-name><td><code>name</code></td><td><code>string</code></td><td><p>An optional name of the server, when set must be unique across all servers.
This will be used for variety of purposes like prefixing stats generated with
this name etc.</p></td><td>No</td></tr></tbody></table></section><h2 id=Port>Port</h2><section><p>Port describes the properties of a specific port of a service.</p><table class=message-fields><thead><tr><th>Field</th><th>Type</th><th>Description</th><th>Required</th></tr></thead><tbody><tr id=Port-number><td><code>number</code></td><td><code>uint32</code></td><td><p>A valid non-negative integer port number.</p></td><td>Yes</td></tr><tr id=Port-protocol><td><code>protocol</code></td><td><code>string</code></td><td><p>The protocol exposed on the port.
MUST BE one of HTTP|HTTPS|GRPC|GRPC-WEB|HTTP2|MONGO|TCP|TLS.
TLS can be either used to terminate non-HTTP based connections on a specific port
or to route traffic based on SNI header to the destination without terminating the TLS connection.</p></td><td>Yes</td></tr><tr id=Port-name><td><code>name</code></td><td><code>string</code></td><td><p>Label assigned to the port.</p></td><td>Yes</td></tr></tbody></table></section><h2 id=ServerTLSSettings>ServerTLSSettings</h2><section><table class=message-fields><thead><tr><th>Field</th><th>Type</th><th>Description</th><th>Required</th></tr></thead><tbody><tr id=ServerTLSSettings-https_redirect><td><code>httpsRedirect</code></td><td><code>bool</code></td><td><p>If set to true, the load balancer will send a 301 redirect for
all http connections, asking the clients to use HTTPS.</p></td><td>No</td></tr><tr id=ServerTLSSettings-mode><td><code>mode</code></td><td><code><a href=#ServerTLSSettings-TLSmode>TLSmode</a></code></td><td><p>Optional: Indicates whether connections to this port should be
secured using TLS. The value of this field determines how TLS is
enforced.</p></td><td>No</td></tr><tr id=ServerTLSSettings-server_certificate><td><code>serverCertificate</code></td><td><code>string</code></td><td><p>REQUIRED if mode is <code>SIMPLE</code> or <code>MUTUAL</code>. The path to the file
holding the server-side TLS certificate to use.</p></td><td>No</td></tr><tr id=ServerTLSSettings-private_key><td><code>privateKey</code></td><td><code>string</code></td><td><p>REQUIRED if mode is <code>SIMPLE</code> or <code>MUTUAL</code>. The path to the file
holding the server&rsquo;s private key.</p></td><td>No</td></tr><tr id=ServerTLSSettings-ca_certificates><td><code>caCertificates</code></td><td><code>string</code></td><td><p>REQUIRED if mode is <code>MUTUAL</code> or <code>OPTIONAL_MUTUAL</code>. The path to a file
containing certificate authority certificates to use in verifying a presented
client side certificate.</p></td><td>No</td></tr><tr id=ServerTLSSettings-credential_name><td><code>credentialName</code></td><td><code>string</code></td><td><p>For gateways running on Kubernetes, the name of the secret that
holds the TLS certs including the CA certificates. Applicable
only on Kubernetes. An Opaque secret should contain the following
keys and values: <code>tls.key: &lt;privateKey></code> and <code>tls.crt: &lt;serverCert></code> or
<code>key: &lt;privateKey></code> and <code>cert: &lt;serverCert></code>.
For mutual TLS, <code>cacert: &lt;CACertificate></code> and <code>crl: &lt;CertificateRevocationList></code>
can be provided in the same secret or a separate secret named <code>&lt;secret>-cacert</code>.
A TLS secret for server certificates with an additional <code>tls.ocsp-staple</code> key
for specifying OCSP staple information, <code>ca.crt</code> key for CA certificates
and <code>ca.crl</code> for certificate revocation list is also supported.
Only one of server certificates and CA certificate
or credentialName can be specified.</p></td><td>No</td></tr><tr id=ServerTLSSettings-subject_alt_names><td><code>subjectAltNames</code></td><td><code>string[]</code></td><td><p>A list of alternate names to verify the subject identity in the
certificate presented by the client.</p></td><td>No</td></tr><tr id=ServerTLSSettings-verify_certificate_spki><td><code>verifyCertificateSpki</code></td><td><code>string[]</code></td><td><p>An optional list of base64-encoded SHA-256 hashes of the SPKIs of
authorized client certificates.
Note: When both verify_certificate_hash and verify_certificate_spki
are specified, a hash matching either value will result in the
certificate being accepted.</p></td><td>No</td></tr><tr id=ServerTLSSettings-verify_certificate_hash><td><code>verifyCertificateHash</code></td><td><code>string[]</code></td><td><p>An optional list of hex-encoded SHA-256 hashes of the
authorized client certificates. Both simple and colon separated
formats are acceptable.
Note: When both verify_certificate_hash and verify_certificate_spki
are specified, a hash matching either value will result in the
certificate being accepted.</p></td><td>No</td></tr><tr id=ServerTLSSettings-min_protocol_version><td><code>minProtocolVersion</code></td><td><code><a href=#ServerTLSSettings-TLSProtocol>TLSProtocol</a></code></td><td><p>Optional: Minimum TLS protocol version. By default, it is <code>TLSV1_2</code>.
TLS protocol versions below TLSV1_2 require setting compatible ciphers with the
<code>cipherSuites</code> setting as they no longer include compatible ciphers.</p><p>Note: Using TLS protocol versions below TLSV1_2 has serious security risks.</p></td><td>No</td></tr><tr id=ServerTLSSettings-max_protocol_version><td><code>maxProtocolVersion</code></td><td><code><a href=#ServerTLSSettings-TLSProtocol>TLSProtocol</a></code></td><td><p>Optional: Maximum TLS protocol version.</p></td><td>No</td></tr><tr id=ServerTLSSettings-cipher_suites><td><code>cipherSuites</code></td><td><code>string[]</code></td><td><p>Optional: If specified, only support the specified cipher list.
Otherwise default to the default cipher list supported by Envoy
as specified <a href=https://www.envoyproxy.io/docs/envoy/latest/api-v3/extensions/transport_sockets/tls/v3/common.proto>here</a>.
The supported list of ciphers are:</p><ul><li><code>ECDHE-ECDSA-AES128-GCM-SHA256</code></li><li><code>ECDHE-RSA-AES128-GCM-SHA256</code></li><li><code>ECDHE-ECDSA-AES256-GCM-SHA384</code></li><li><code>ECDHE-RSA-AES256-GCM-SHA384</code></li><li><code>ECDHE-ECDSA-CHACHA20-POLY1305</code></li><li><code>ECDHE-RSA-CHACHA20-POLY1305</code></li><li><code>ECDHE-ECDSA-AES128-SHA</code></li><li><code>ECDHE-RSA-AES128-SHA</code></li><li><code>ECDHE-ECDSA-AES256-SHA</code></li><li><code>ECDHE-RSA-AES256-SHA</code></li><li><code>AES128-GCM-SHA256</code></li><li><code>AES256-GCM-SHA384</code></li><li><code>AES128-SHA</code></li><li><code>AES256-SHA</code></li><li><code>DES-CBC3-SHA</code></li></ul></td><td>No</td></tr></tbody></table></section><h2 id=ServerTLSSettings-TLSmode>ServerTLSSettings.TLSmode</h2><section><p>TLS modes enforced by the proxy</p><table class=enum-values><thead><tr><th>Name</th><th>Description</th></tr></thead><tbody><tr id=ServerTLSSettings-TLSmode-PASSTHROUGH><td><code>PASSTHROUGH</code></td><td><p>The SNI string presented by the client will be used as the
match criterion in a VirtualService TLS route to determine
the destination service from the service registry.</p></td></tr><tr id=ServerTLSSettings-TLSmode-SIMPLE><td><code>SIMPLE</code></td><td><p>Secure connections with standard TLS semantics. In this mode
client certificate is not requested during handshake.</p></td></tr><tr id=ServerTLSSettings-TLSmode-MUTUAL><td><code>MUTUAL</code></td><td><p>Secure connections to the downstream using mutual TLS by
presenting server certificates for authentication.
A client certificate will also be requested during the handshake and
at least one valid certificate is required to be sent by the client.</p></td></tr><tr id=ServerTLSSettings-TLSmode-AUTO_PASSTHROUGH><td><code>AUTO_PASSTHROUGH</code></td><td><p>Similar to the passthrough mode, except servers with this TLS
mode do not require an associated VirtualService to map from
the SNI value to service in the registry. The destination
details such as the service/subset/port are encoded in the
SNI value. The proxy will forward to the upstream (Envoy)
cluster (a group of endpoints) specified by the SNI
value. This server is typically used to provide connectivity
between services in disparate L3 networks that otherwise do
not have direct connectivity between their respective
endpoints. Use of this mode assumes that both the source and
the destination are using Istio mTLS to secure traffic.</p></td></tr><tr id=ServerTLSSettings-TLSmode-ISTIO_MUTUAL><td><code>ISTIO_MUTUAL</code></td><td><p>Secure connections from the downstream using mutual TLS by
presenting server certificates for authentication. Compared
to Mutual mode, this mode uses certificates, representing
gateway workload identity, generated automatically by Istio
for mTLS authentication. When this mode is used, all other
fields in <code>TLSOptions</code> should be empty.</p></td></tr><tr id=ServerTLSSettings-TLSmode-OPTIONAL_MUTUAL><td><code>OPTIONAL_MUTUAL</code></td><td><p>Similar to MUTUAL mode, except that the client certificate
is optional. Unlike SIMPLE mode, A client certificate will
still be explicitly requested during handshake, but the client
is not required to send a certificate. If a client certificate
is presented, it will be validated. ca_certificates should
be specified for validating client certificates.</p></td></tr></tbody></table></section><h2 id=ServerTLSSettings-TLSProtocol>ServerTLSSettings.TLSProtocol</h2><section><p>TLS protocol versions.</p><table class=enum-values><thead><tr><th>Name</th><th>Description</th></tr></thead><tbody><tr id=ServerTLSSettings-TLSProtocol-TLS_AUTO><td><code>TLS_AUTO</code></td><td><p>Automatically choose the optimal TLS version.</p></td></tr><tr id=ServerTLSSettings-TLSProtocol-TLSV1_0><td><code>TLSV1_0</code></td><td><p>TLS version 1.0</p></td></tr><tr id=ServerTLSSettings-TLSProtocol-TLSV1_1><td><code>TLSV1_1</code></td><td><p>TLS version 1.1</p></td></tr><tr id=ServerTLSSettings-TLSProtocol-TLSV1_2><td><code>TLSV1_2</code></td><td><p>TLS version 1.2</p></td></tr><tr id=ServerTLSSettings-TLSProtocol-TLSV1_3><td><code>TLSV1_3</code></td><td><p>TLS version 1.3</p></td></tr></tbody></table></section></article><nav class=pagenav><div class=left><a title="Customizing Envoy configuration generated by Istio." href=/v1.21/docs/reference/config/networking/envoy-filter/ class=next-link><svg class="icon left-arrow"><use xlink:href="/v1.21/img/icons.svg#left-arrow"/></svg>Envoy Filter</a></div><div class=right><a title="Provides configuration for individual workloads." href=/v1.21/docs/reference/config/networking/proxy-config/ class=next-link>ProxyConfig<svg class="icon right-arrow"><use xlink:href="/v1.21/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>
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