![]() ![]() The value “.” is reserved and defines an export to the same namespace that If no namespaces are specified then the virtual service is exported to all This feature provides a mechanism for service ownersĪnd mesh administrators to control the visibility of virtual services Virtual service allows it to be used by sidecars and gateways defined in The first ruleĪ list of namespaces to which this virtual service is exported. TCP routes willīe applied to any port that is not a HTTP or TLS port. Without associated virtual service will be treated as opaque TCPĪn ordered list of route rules for opaque TCP traffic. with “passthrough” TLS mode) and serviceĮntry ports using HTTPS/TLS protocols. Service ports named ‘https- ’, ’tls-’, unterminated gateway ports using Routing is typically performed using the SNI value presentedīy the ClientHello message. The first rule matchingĪn ordered list of route rule for non-terminated TLS & HTTPS Ports with protocol HTTP/HTTP2/GRPC/TLS-terminated-HTTPS and serviceĮntry ports using HTTP/HTTP2/GRPC protocols. HTTP routes will beĪpplied to platform service ports using HTTP/HTTP2/GRPC protocols, gateway Gateways and sidecars, specify mesh as one of the gateway names.Īn ordered list of route rules for HTTP traffic. If a list of gateway names is provided, the Gateway ( mesh) will be used, which would apply the rule to all The reserved word mesh is used to implyĪll the sidecars in the mesh. The selection condition imposed by thisįield can be overridden using the source field in the match conditions A single VirtualService is used for sidecars inside the mesh as Namespace qualifier is the same as specifying the VirtualService’s Gateways in other namespaces may be referred to by The names of gateways and sidecars that should apply these routes. Note: It must be empty for a delegate VirtualService. Only for services defined via the Gateway. Referred to using their alphanumeric names. The mesh, i.e., those found in the service registry, must always be The hosts field applies to both HTTP and TCP services. Potential misconfigurations, it is recommended to always use fully The actual namespace associated with the reviews service. Rule in the “default” namespace containing a host “reviews” will be The short name based on the namespace of the rule, not the service. ![]() Instead of “.local”), Istio will interpret Note for Kubernetes users: When short names are used (e.g. Alternatively, the traffic properties of a hostĬan be defined using more than one VirtualService, with certain Properties of the corresponding hosts, including those for multiple In such a scenario, the FQDN of the host would beĭerived based on the underlying platform.Ī single VirtualService can be used to describe all the traffic Platform, short-names can also be used instead of a FQDN (i.e. Couldīe a DNS name with wildcard prefix or an IP address. The destination hosts to which traffic is being sent. HTTP requests with path starting with /wpcatalog/ or /consumercatalog/ willīe rewritten to /newcatalog and sent to pods with label “version: v2”.Ĭonfiguration affecting traffic routing. Pods of the reviews service with label “version: v1”. The following example on Kubernetes, routes all HTTP traffic by default to To be customized for specific client contexts. The source of traffic can also be matched in a routing rule. (or subset/version of it) defined in the registry. If the traffic is matched, then it is sent to a named destination service Each routing rule defines matching criteria for traffic of a specific TheĪctual choice of the version is determined by the proxy/sidecar, enabling theĪpplication code to decouple itself from the evolution of dependentĪ VirtualService defines a set of traffic routing rules to apply when a host isĪddressed. (Host) without knowledge of individual service versions (subsets). Host - The address used by a client when attempting to connect to aĪccess model - Applications address only the destination service Source - A downstream client calling a service. Each service hasĪ default version consisting of all its instances. Url, etc.) and/or by weights assigned to each version. Particular version can be decided based on various criterion (headers, Occurs include A/B testing, canary rollouts, etc. Iterative changes to the same service, deployed in differentĮnvironments (prod, staging, dev, etc.). Variants are not necessarily different API versions. Instances running different variants of the application binary. Scenario, for a given service, there can be distinct subsets of Implemented by workload instances running on pods, containers, VMs etc. Services consist of multiple network endpoints Service a unit of application behavior bound to a unique name in a ![]()
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