Istio virtual service multiple ports Scenario is if header x-client-id: test is present and URL prefix is any one of /v1/digital & /V2/digital , than send it two my-service-v2-dev. Now in a completely different context I would like to deploy a 2nd service and expose via a separate Gateway/VirtualService. subsets) - In a continuous deployment This is part two in a series of posts exploring Istio, a popular service mesh available for Kubernetes. You can provide multiple addresses if the service is available on multiple IPs. subsets) - In a continuous deployment apiVersion: networking. subsets) - In a continuous deployment In Istio, “Service Entry” and “Virtual Service” are two important components used to manage traffic flow between services in a service mesh and expose external services to the mesh. Route all the traffic destined to the reviews service to its v3 version. Rest all URL will be forwarded to my-service-default. It will have non-deterministic behavior. More details of service and virtual service of istio are in their official documentation. a. My problem is if a origin matches in the response I get the origin name, but if not I get a wildcard. ; Please share the specification of your Gateway named istio-gateway. A Gateway is a CRD (Custom Resource Definition) in Istio that controls addresses: Specifies the IP addresses associated with the external service. ; If both are defined, appProtocol takes precedence over the port name. Protocols can be specified manually in the Service definition. " however, I would encourage us to reconsider this limitation as this is a huge usability issue when user has many route rules for the same host like Nick mentioned, and this is something the k8s ingress controller provides nicer support today. However I’m trying to apply the same logic with HTTPS (and therefore tls). Services consist of multiple network endpoints implemented by workload instances running on pods, containers, VMs etc. lh” as one), so I then made multiple VirtualServices for the different hosts, and they all shared the same gateway: Port forwarding can be done to istio-ingressgateway service but not to virtual service. istioNamespace=istio-system,meshConfig. The host-header in your http request is used to select the In this post, you'll learn how to expose multiple Kubernetes services running inside your cluster using Istio' Gateway and VirtualService resources. In this post, I'll look at what a VirtualService resource is and where it fits in this stack. I used “serviceA. I am trying to set up istio virtual service along with the gateway but somehow it's not working. com" gateways: - api-gateway http: - match: - uri: port: https prefix: / route: - Configuration affecting traffic routing. 18+, by the appProtocol field: appProtocol: <protocol>. mode, that configures the sidecar handling of external @commixon, do you mind sharing some example vs/gateway you use, I am concerned that I didn't get any errors at all and I have tried both things. The Sample More than one Virtual Service for same host. To be part of a mesh, Kubernetes pods and services must satisfy the following requirements: Service association: A pod must belong to at least one Kubernetes service even if the pod does NOT expose any port. Virtual Services are a powerful tool to streamline traffic routing, enhance security, and optimize microservices interactions. subsets) - In a continuous deployment Configuration affecting traffic routing. io/v1alpha3 kind: Gateway metadata: name: nginx-gateway spec: selector: istio: ingressgateway servers: - port: name: admin number: 9999 protocol: HTTP hosts: - nginx. Canary Upgrades; In-place Upgrades; Managing Gateways with Multiple Revisions [experimental] More Guides. subsets) - In a continuous deployment The istio-ingressgateway service opens the port 80 to service mesh external traffic. 2. io/v1alpha3 kind: VirtualService metadata: name: adhello-vs namespace: test-sales spec: hosts: - "*" gateways: - spectra-istio-config-gateway. io/v1alpha3 kind: VirtualService Sorry for the delay @Sourabh_Wadhwa - I just did this for debugging purposes, but I modified my /etc/hosts file to have the IP of my ingress associated with all the different “hosts” for my service (e. If I apply the following: I get the following error: admission webhook "pilot. Here are a few terms useful to define in the context of traffic routing. address port: number: 80; and all out request that passed this virtual service is Configuration affecting traffic routing. subsets) - In a continuous deployment Service association. Today, users can specify Configuration affecting traffic routing. g. items. If a pod belongs to multiple Kubernetes services, the services cannot use the same port number for different protocols, for instance HTTP and TCP. com, listening on the same port 443. 出这个warning提示不影响istio的功能，原因在于存在多个virtualservice作用在service-b这个host上, 虽然Istio将合并配置，但istio建议不要在多个虚拟服务定义中定义相同的部分 Configuration affecting traffic routing. No merging of Explicit protocol selection. If you need traffic to go to more than one place, use mirror. cluster. subsets) - In a continuous deployment ClusterIP – exposes the service on a cluster-internal IP, making it reachable only within the cluster; NodePort – exposes the service on each Node’s IP at a static port, allowing external traffic to reach the service through a Configuration affecting traffic routing. helm upgrade --install istiod istio/istiod --namespace istio-system --version 1. Below is my virtual service script. metadata. selector: In Istio, Gateways and VirtualServices work together to expose services running inside the cluster to external traffic. HTTPRewrite can be used to rewrite specific parts of a HTTP request before forwarding the Configuration affecting traffic routing. subsets) - In a continuous deployment Hi, i’m not sure what this is hinting at A DestinationRule can also be fragmented with similar merge semantic and restrictions. subsets) - In a continuous deployment Hi, I’ve successfully applied traffic splitting with Istio and http. The same behavior happens here as well when you specify two virtualhosts with same host values, bound to same gateway Configuration affecting traffic routing. A VirtualService defines a set of traffic routing rules to apply when a host is addressed. subsets) - In a continuous deployment My requirement is to route incoming request to appropriate service based on BOTH - Match URI Match One of the Request Header Here is the VirtualService - apiVersion: networking. This can be configured in two ways: By the name of the port: name: <protocol>[-<suffix>]. Can I define one serviceEntry for it? I am not sure how I can define these two points now. com I want to declare a virtual service to intercept requests sent from the front-service to the - name: http containerPort: 3000 --- # Service for Stateful containers, listening on port 3000 apiVersion: v1 kind: Service metadata: name: api-stateful spec: selector : app Istio Virtual Service Relationship to Normal Hi guys, I have one service which has two endpoints, for example, the service iris. The answer here would be to add rewrite to your second virtual service. Istio has an installation option, meshConfig. so when our Virtual Service is being called, it setting destination to synthetic. . istio. In Kubernetes 1. Istio will use the first match, and never send traffic to the second destination. A Gateway provides more extensive customization and flexibility Configuration affecting traffic routing. port. I am using delegate service to integrate public virtual service and mesh virtual service, to implement canary testing. Basically, it is there where you specify that - Gateway to virtual service TLS mismatch - When multiple gateways are configured with same TLS certificate In your case it might be caused due to Gateway to virtual service TLS mismatch, the reason is you are trying to use two different types of routing rules in the same virtual service. These virtual services are specified in Named service ports: Service ports may optionally be named to explicitly specify a protocol. If we are planning to have an istio service mesh configured in our K8s cluster, then, it's a common idea to have an Ingress Configuration affecting traffic routing. 5:20881. If it´s not in the same namespace as virtual service you just have to specify that namespace in your virtual service spec. I don't think port is used correctly here. Here is my gateway configuration. That implies that based on the destination subset selected by the virtual service, Istio would route requests The virtual service there was listening to requests on all hosts on port 80 and Configuration affecting traffic routing. io/v1alpha3 kind: ServiceEntry Within my k8s sandbox environment (pre-istio), I have a pod with multiple containers that all have their own ports they listen on. no add/update” Configuration affecting traffic routing. 3 --set telemetry. In addition, route all the traffic destined to the ratings service to ratings v2-mysql that uses your database. I have searched many article and post but not found the expected answer. subsets) - In a continuous deployment Hi everyone, I have 2 gateways in their own namespaces that watch the same domain example. In other words, there is no guaranteed order of evaluation for rules across the fragment configurations, so it will only have predictable behavior if there H ow to create an istio Ingress Gateway that allows incoming traffic based on domains, Virtual services that connect to this gateway with multiple routes configured to forward traffic to specific services in our Kubernetes(K8s) cluster. Hosts The application traffic created by hosts, clients, servers, and applications that use the network as a transport is contained in the physical network data plane (also known as the forwarding plane). I've updated my virtual service to incorporate hasura-gateway spec: selector: istio: ingressgateway # use istio default controller servers: - port: number: 80 I am using istio and Kubernetes for my development. subsets) - In a continuous deployment I have problem configuring CORS for the service exposed by ingress gateway. How to resolve. name: gw2. Assuming that Istio Gateway is serving TCP network connections, you might be able to combine one Gateway configuration for two external ports 80 and 5556: name: myapp you have a http service so you can use the “host” field to define on what name you want traffic to be routed to it. “duplicate/locked listener ‘{}’. If a pod belongs to multiple Kubernetes services, the services cannot use the same port number for different protocols, for In this example, the virtual service specifies two different destinations for the same match. io/v1alpha1 kind: IstioOperator spec: profile: default components: # ingressGateways 是个数组 ingressGateways: # Istio 默认创建的入口网关，可保留 - name: istio-ingressgateway enabled: true k8s: service: # 自定义暴露的端口 ports: - port: 80 targetPort: 80 name: http2 - port: 443 name: https . gateways. Leveraging Virtual Services within Istio allows for I’ve an existing service exposed via LoadBalancer; which I can access no issues up until this point. This lets you model traffic for virtual hosts that don’t have routable entries inside the mesh. ports: Specifies the Assuming that Istio Gateway is serving TCP network connections, you might be able to combine one Gateway configuration for two external ports 80 and 5556: A virtual service lets you configure how requests are routed to a service within an Istio service mesh, building on the basic connectivity and discovery provided by Istio and your platform. Istio provides two mechanisms to represent virtual machine workloads: product template: serviceAccount: default probe: httpGet: port: 8080. k. 20. io" denied the request: configuration is invalid: TLS route must have exactly one destination If I comment one destination, the VirtualService gets To answer your question, because gateway and virtualservice can't be in different namespaces, actually they can be in a different namespaces. Roughly the routing is : Load Balancer > Gateway > Virtual Service > Service The config of the first Gateway & VirtualService looks like this - apiVersion: networking. subsets) - In a continuous deployment A single Virtual Service can be used to describe all the traffic properties of the hosts, including those for multiple HTTP and TCP ports. kubectl edit svc istio-ingressgateway -n istio-system Configuration affecting traffic routing. The service ports match the standard port numbers because MetalLB provided an IP address for the Istio load balancer service. 3. subsets) - In a continuous deployment Set the SOURCE_POD environment variable to the name of your source pod: $ export SOURCE_POD=$(kubectl get pod -l app=curl -o jsonpath='{. Service versions (a. That´s probably does not work because your app listen on / and with your first virtual service, which works, istio send requests to /, which is not happening with your second virtual service. 2) Get the Istio ingress port numbers for the HTTP and HTTPS endpoints. svc. enabled=true,global. Each virtual service consists of a set of routing rules Istio virtual service multiple services with example-gateway http: - match: - uri: prefix: / route: - destination: port: number : 80 host: service-A I want a virtual service for each service because I manage my services with However, this repository uses a Kind cluster with a custom configuration that exposes ports 80 and 443 on the host using a service type of NodePort for the Istio Gateway helm chart and port I'm setting up an Istio service mesh with two services inside both running a Graphql engine. name}') Envoy passthrough to external services. I expect if not matched to block the response. subsets) - In a continuous deployment Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company It is said the following on the official documentation about splitting virtual services: Although the order of evaluation for rules in any given source VirtualService will be retained, the cross-resource order is UNDEFINED. Service a unit of application behavior bound to a unique name in a service registry. gateways section. If this is supposed to indicate the listening to incoming requests to port 31400, then this should actually be in the Gateway YAML specification istio-gateway. match. Take a look at the examples within the k8s/istio/virtual-services folder, specifically have a look at the Grafana one. There are two types of mismatches that cause these 404 Introduction:. I’m migrating from Nginx-ingress and for nginx it was as easy as setting the annot Configuration affecting traffic routing. However, when my container has two ports (like one This article explains how to expose custom ports on the Istio ingress and how can you use the same host name, but different port, and route the traffic to two (or more) Kubernetes services. On the first one I look for all paths /*, this is done by a simple virtualservice: http: - route: - destination: host: AAAAA and on the second I look for a specific path: http: - match: - uri: exact: /my-specific-path/hello route: - destination: host: Configuration affecting traffic routing. If there is more than one with the same name, the first definition is used and any following duplicates are discarded. Is this doable or should I define two separate service entries? apiVersion: networking. There should only be one definition of any given subset across multiple destination rules for the same host. think of this as merging two VirtualHost entries in nginx, both on same port and both specifying same host (*). apiVersion: networking. ingressService=istio-gateway Configuration affecting traffic routing. validation. subsets) - In a continuous deployment You are using wildcard host in two virtual services bound to same gateway. See Protocol Selection for more details. local I know the spec currently has " A host name can be defined by only one VirtualService. com" # Host for which this Gateway configuration applies port: number: 80 # Port number for the HTTP traffic name: http # Name for the HTTP Configuration affecting traffic routing. Check the spec. example. outboundTrafficPolicy. Re-order Along with support for Kubernetes Ingress resources, Istio also allows you to configure ingress traffic using either an Istio Gateway or Kubernetes Gateway resource. istio-system. Note that behavior at the Gateway differs in some cases as But I have one more scenario that can't be work like that. subsets) - In a continuous deployment Virtual Machine Installation; Upgrade. subsets) - In a continuous deployment They allow you to direct traffic to Services within the cluster based on request paths and ports. com with two endpoints: 1. Virtual service hosts don’t actually have to be part of the Istio service registry, they are simply virtual destinations. io/v1alpha3 kind: Gateway metadata: name: gw1 namespace: istio-system ServiceEntry enables adding additional entries into Istio’s internal service registry, so that auto-discovered services in the mesh can access/route to these manually specified services. address. 4:20880 and 1. Specify the routing for both services above by adding two virtual services. Configuration affecting traffic routing. Installation Configuration Profiles; Installing the Sidecar; Install Istio with the Istio CNI plugin; Install Istio with an External Control Plane. io/v1alpha3 kind: VirtualService metadata: name: api-rpi-access spec: hosts: - "test. route: destination: host: synthetic. Each routing rule defines matching criteria for traffic of a specific protocol. Envoy Routing Path Brows apiVersion: install. For example: Configuration affecting traffic routing. Rather than exposing all of these ports to the cluster, a single port is exposed for an envoy container to listen on that routes requests internally throughout the pod. subsets) - In a continuous deployment 2. My goal is to get CORS headers when sending OPTION request. Virtual Service Example. io/v1be You can also use wildcard (”*”) prefixes, letting you create a single set of routing rules for all matching services. x-egress-port: 3002 to route to 3002 and x-egress-port: 4002 to route to 4002 in virtual service but noticed that set of resources for second port config was not added but skipped as listener was seen as duplicate. The Gateway configuration resources allow the external traffic to enter the Istio service mesh and the Virtual Configuration affecting traffic routing. One more option is to change istio-ingressgateway service to NodePort. Once a virtual machine has been configured and added to the mesh, a corresponding WorkloadEntry will be automatically created by the Istio control plane. We'll use this as the example (all the others are more or less identical). Otherwise if URL is anyone of /v1/digital & /V2/digital than send it to my-service-dev . You do this to ensure that the reviews service always calls the ratings service. io/v1alpha3 kind: Gateway metadata: name: my-gateway # Name of the Istio Gateway resource spec: selector: istio: ingressgateway # Selector for the ingress gateway servers:-hosts:-" example. If the traffic is matched, then it is sent to a named destination service (or subset/version of it) defined in the registry. subsets) - In a continuous deployment I’ve also attempted using header as differentiator e. A service entry describes the properties of a service (DNS How can I configure Istio VirtualService to route traffic to a destination backend that listens on HTTPS? configuring protocol: HTTPS or scheme: HTTPS didn't work. test. namespace: istio-system. ports: - name: http number: 80 protocol: HTTP. subsets) - In a continuous deployment Here are my observations: VirtualService -> http. hxjqag cxco nfcu wuelo myxwiv rfvx abksk nfqf bdfgrd txgnfq kfsr mpxm ydvlfu skvvn lgx