Packages:
Package v1alpha1 contains API Schema definitions for the networking.x-k8s.io API group.
Resource Types:
BackendPolicy defines policies associated with backends. For the purpose of this API, a backend is defined as any resource that a route can forward traffic to. A common example of a backend is a Service. Configuration that is implementation specific may be represented with similar implementation specific custom resources.
Field | Description | ||||
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apiVersion string |
networking.x-k8s.io/v1alpha1
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kind string |
BackendPolicy |
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metadata Kubernetes meta/v1.ObjectMeta |
Refer to the Kubernetes API documentation for the fields of the
metadata field.
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spec BackendPolicySpec |
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status BackendPolicyStatus |
Gateway represents an instantiation of a service-traffic handling infrastructure by binding Listeners to a set of IP addresses.
Implementations should add the gateway-exists-finalizer.networking.x-k8s.io
finalizer on the associated GatewayClass whenever Gateway(s) is running.
This ensures that a GatewayClass associated with a Gateway(s) is not
deleted while in use.
Field | Description | ||||||
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apiVersion string |
networking.x-k8s.io/v1alpha1
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kind string |
Gateway |
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metadata Kubernetes meta/v1.ObjectMeta |
Refer to the Kubernetes API documentation for the fields of the
metadata field.
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spec GatewaySpec |
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status GatewayStatus |
GatewayClass describes a class of Gateways available to the user for creating Gateway resources.
GatewayClass is a Cluster level resource.
Support: Core.
Field | Description | ||||
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apiVersion string |
networking.x-k8s.io/v1alpha1
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kind string |
GatewayClass |
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metadata Kubernetes meta/v1.ObjectMeta |
Refer to the Kubernetes API documentation for the fields of the
metadata field.
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spec GatewayClassSpec |
Spec for this GatewayClass.
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status GatewayClassStatus |
Status of the GatewayClass. |
HTTPRoute is the Schema for the HTTPRoute resource.
Field | Description | ||||||||
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apiVersion string |
networking.x-k8s.io/v1alpha1
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kind string |
HTTPRoute |
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metadata Kubernetes meta/v1.ObjectMeta |
Refer to the Kubernetes API documentation for the fields of the
metadata field.
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spec HTTPRouteSpec |
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status HTTPRouteStatus |
TCPRoute is the Schema for the TCPRoute resource.
Field | Description | ||||
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apiVersion string |
networking.x-k8s.io/v1alpha1
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kind string |
TCPRoute |
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metadata Kubernetes meta/v1.ObjectMeta |
Refer to the Kubernetes API documentation for the fields of the
metadata field.
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spec TCPRouteSpec |
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status TCPRouteStatus |
TLSRoute is the Schema for the TLSRoute resource. TLSRoute is similar to TCPRoute but can be configured to match against TLS-specific metadata. This allows more flexibility in matching streams for a given TLS listener.
If you need to forward traffic to a single target for a TLS listener, you could chose to use a TCPRoute with a TLS listener.
Field | Description | ||||
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apiVersion string |
networking.x-k8s.io/v1alpha1
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kind string |
TLSRoute |
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metadata Kubernetes meta/v1.ObjectMeta |
Refer to the Kubernetes API documentation for the fields of the
metadata field.
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spec TLSRouteSpec |
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status TLSRouteStatus |
UDPRoute is the Schema for the UDPRoute resource.
Field | Description | ||||
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apiVersion string |
networking.x-k8s.io/v1alpha1
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kind string |
UDPRoute |
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metadata Kubernetes meta/v1.ObjectMeta |
Refer to the Kubernetes API documentation for the fields of the
metadata field.
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spec UDPRouteSpec |
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status UDPRouteStatus |
(Appears on: GatewayAddress)
AddressType defines how a network address is represented as a text string. Valid AddressType values are:
- “IPAddress”: an IPv4 or IPv6 address
- “NamedAddress”: an opaque identifier. The interpretation of the name is dependent on the controller. If a NamedAddress is requested but unsupported by an implementation, the controller should raise the “Detached” listener status condition on the Gateway with the “UnsupportedAddress” reason.
A NamedAddress might be a cloud-dependent ID for a “static” or “elastic” IP
BackendPolicyConditionType is a type of condition associated with a BackendPolicy.
(Appears on: BackendPolicy)
BackendPolicySpec defines desired policy for a backend.
Field | Description |
---|---|
backendRefs []BackendRef |
BackendRefs define which backends this policy should be applied to. This policy can only apply to backends within the same namespace. If more than one BackendPolicy targets the same backend, precedence must be given to the oldest BackendPolicy. Support: Core |
tls BackendTLSConfig |
(Optional)
TLS is the TLS configuration for these backends. Support: Extended |
(Appears on: BackendPolicy)
BackendPolicyStatus defines the observed state of BackendPolicy. Conditions that are related to a specific Route or Gateway should be placed on the Route(s) using backends configured by this BackendPolicy.
Field | Description |
---|---|
conditions []Kubernetes meta/v1.Condition |
Conditions describe the current conditions of the BackendPolicy. |
(Appears on: BackendPolicySpec)
BackendRef identifies an API object within a known namespace that defaults group to core and resource to services if unspecified.
Field | Description |
---|---|
group string |
Group is the group of the referent. |
kind string |
Kind is the kind of the referent. |
name string |
Name is the name of the referent. |
port PortNumber |
(Optional)
Port is the port of the referent. If unspecified, this policy applies to all ports on the backend. |
(Appears on: BackendPolicySpec)
BackendTLSConfig describes TLS configuration for a backend.
Field | Description |
---|---|
certificateAuthorityRef LocalObjectReference |
(Optional)
CertificateAuthorityRef is a reference to a resource that includes trusted CA certificates for the associated backends. If an entry in this list omits or specifies the empty string for both the group and the resource, the resource defaults to “secrets”. An implementation may support other resources (for example, resource “mycertificates” in group “networking.acme.io”). When stored in a Secret, certificates must be PEM encoded and specified within the “ca.crt” data field of the Secret. Multiple certificates can be specified, concatenated by new lines. Support: Extended |
options map[string]string |
(Optional)
Options are a list of key/value pairs to give extended options to the provider. Support: Implementation-specific. |
(Appears on: GatewaySpec, GatewayStatus)
GatewayAddress describes an address that can be bound to a Gateway.
Field | Description |
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type AddressType |
Type of the Address. This is either “IPAddress” or “NamedAddress”. Support: Extended |
value string |
Value. Examples: “1.2.3.4”, “128::1”, “my-ip-address”. Validity of the
values will depend on |
(Appears on: RouteGateways)
GatewayAllowType specifies which Gateways should be allowed to use a Route.
GatewayClassConditionType is the type of status conditions. This type should be used with the GatewayClassStatus.Conditions field.
(Appears on: GatewayClass)
GatewayClassSpec reflects the configuration of a class of Gateways.
Field | Description |
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controller string |
Controller is a domain/path string that indicates the controller that is managing Gateways of this class. Example: “acme.io/gateway-controller”. This field is not mutable and cannot be empty. The format of this field is DOMAIN “/” PATH, where DOMAIN and PATH are valid Kubernetes names (https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names). Support: Core |
parametersRef LocalObjectReference |
(Optional)
ParametersRef is a controller-specific resource containing the configuration parameters corresponding to this class. This is optional if the controller does not require any additional configuration. Parameters resources are implementation specific custom resources. These resources must be cluster-scoped. If the referent cannot be found, the GatewayClass’s “InvalidParameters” status condition will be true. Support: Custom |
(Appears on: GatewayClass)
GatewayClassStatus is the current status for the GatewayClass.
Field | Description |
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conditions []Kubernetes meta/v1.Condition |
Conditions is the current status from the controller for this GatewayClass. |
GatewayConditionReason defines the set of reasons that explain why a particular Gateway condition type has been raised.
GatewayConditionType is a type of condition associated with a Gateway. This type should be used with the GatewayStatus.Conditions field.
(Appears on: RouteGatewayStatus, RouteGateways)
GatewayReference identifies a Gateway in a specified namespace.
Field | Description |
---|---|
name string |
Name is the name of the referent. |
namespace string |
Namespace is the namespace of the referent. |
(Appears on: Gateway)
GatewaySpec defines the desired state of Gateway.
Not all possible combinations of options specified in the Spec are valid. Some invalid configurations can be caught synchronously via a webhook, but there are many cases that will require asynchronous signaling via the GatewayStatus block.
Field | Description |
---|---|
gatewayClassName string |
GatewayClassName used for this Gateway. This is the name of a GatewayClass resource. |
listeners []Listener |
Listeners associated with this Gateway. Listeners define logical endpoints that are bound on this Gateway’s addresses. At least one Listener MUST be specified. An implementation MAY group Listeners by Port and then collapse each group of Listeners into a single Listener if the implementation determines that the Listeners in the group are “compatible”. An implementation MAY also group together and collapse compatible Listeners belonging to different Gateways. For example, an implementation might consider Listeners to be compatible with each other if all of the following conditions are met:
If the implementation does collapse compatible Listeners, the hostname provided in the incoming client request MUST be matched to a Listener to find the correct set of Routes. The incoming hostname MUST be matched using the Hostname field for each Listener in order of most to least specific. That is, exact matches must be processed before wildcard matches. If this field specifies multiple Listeners that have the same Port value but are not compatible, the implementation must raise a “Conflicted” condition in the Listener status. Support: Core |
addresses []GatewayAddress |
(Optional)
Addresses requested for this gateway. This is optional and behavior can depend on the GatewayClass. If a value is set in the spec and the requested address is invalid, the GatewayClass MUST indicate this in the associated entry in GatewayStatus.Addresses. If no Addresses are specified, the GatewayClass may schedule the Gateway in an implementation-defined manner, assigning an appropriate set of Addresses. The GatewayClass MUST bind all Listeners to every GatewayAddress that it assigns to the Gateway. Support: Core |
(Appears on: Gateway)
GatewayStatus defines the observed state of Gateway.
Field | Description |
---|---|
addresses []GatewayAddress |
(Optional)
Addresses lists the IP addresses that have actually been bound to the Gateway. These addresses may differ from the addresses in the Spec, e.g. if the Gateway automatically assigns an address from a reserved pool. These addresses should all be of type “IPAddress”. |
conditions []Kubernetes meta/v1.Condition |
Conditions describe the current conditions of the Gateway. Implementations should prefer to express Gateway conditions
using the Known condition types are:
|
listeners []ListenerStatus |
(Optional)
Listeners provide status for each unique listener port defined in the Spec. |
(Appears on: Listener)
GatewayTLSConfig describes a TLS configuration.
References - nginx: https://nginx.org/en/docs/http/configuring_https_servers.html - envoy: https://www.envoyproxy.io/docs/envoy/latest/api-v2/api/v2/auth/cert.proto - haproxy: https://www.haproxy.com/documentation/aloha/9-5/traffic-management/lb-layer7/tls/ - gcp: https://cloud.google.com/load-balancing/docs/use-ssl-policies#creating_an_ssl_policy_with_a_custom_profile - aws: https://docs.aws.amazon.com/elasticloadbalancing/latest/application/create-https-listener.html#describe-ssl-policies - azure: https://docs.microsoft.com/en-us/azure/app-service/configure-ssl-bindings#enforce-tls-1112
Field | Description |
---|---|
mode TLSModeType |
Mode defines the TLS behavior for the TLS session initiated by the client. There are two possible modes: - Terminate: The TLS session between the downstream client and the Gateway is terminated at the Gateway. - Passthrough: The TLS session is NOT terminated by the Gateway. This implies that the Gateway can’t decipher the TLS stream except for the ClientHello message of the TLS protocol. CertificateRef field is ignored in this mode. |
certificateRef LocalObjectReference |
(Optional)
CertificateRef is the reference to Kubernetes object that contain a TLS certificate and private key. This certificate MUST be used for TLS handshakes for the domain this GatewayTLSConfig is associated with. If an entry in this list omits or specifies the empty string for both the group and the resource, the resource defaults to “secrets”. An implementation may support other resources (for example, resource “mycertificates” in group “networking.acme.io”). Support: Core (Kubernetes Secrets) Support: Implementation-specific (Other resource types) |
routeOverride TLSOverridePolicy |
RouteOverride dictates if TLS settings can be configured via Routes or not. CertificateRef must be defined even if |
options map[string]string |
(Optional)
Options are a list of key/value pairs to give extended options to the provider. There variation among providers as to how ciphersuites are expressed. If there is a common subset for expressing ciphers then it will make sense to loft that as a core API construct. Support: Implementation-specific. |
(Appears on: HTTPRouteMatch)
HTTPHeaderMatch describes how to select a HTTP route by matching HTTP request headers.
Field | Description |
---|---|
type HeaderMatchType |
Type specifies how to match against the value of the header. Support: core (Exact) Support: custom (RegularExpression, ImplementationSpecific) Since RegularExpression PathType has custom conformance, implementations can support POSIX, PCRE or any other dialects of regular expressions. Please read the implementation’s documentation to determine the supported dialect. HTTP Header name matching MUST be case-insensitive (RFC 2616 - section 4.2). |
values map[string]string |
Values is a map of HTTP Headers to be matched. It MUST contain at least one entry. The HTTP header field name to match is the map key, and the value of the HTTP header is the map value. HTTP header field name matching MUST be case-insensitive. Multiple match values are ANDed together, meaning, a request must match all the specified headers to select the route. |
(Appears on: HTTPRouteMatch)
HTTPPathMatch describes how to select a HTTP route by matching the HTTP request path.
Field | Description |
---|---|
type PathMatchType |
Type specifies how to match against the path Value. Support: core (Exact, Prefix) Support: custom (RegularExpression, ImplementationSpecific) Since RegularExpression PathType has custom conformance, implementations can support POSIX, PCRE or any other dialects of regular expressions. Please read the implementation’s documentation to determine the supported dialect. |
value string |
Value of the HTTP path to match against. |
(Appears on: HTTPRouteFilter)
HTTPRequestHeaderFilter defines configuration for the RequestHeaderModifier filter.
Field | Description |
---|---|
set map[string]string |
(Optional)
Set overwrites the request with the given header (name, value) before the action. Input: GET /foo HTTP/1.1 my-header: foo Config: set: {“my-header”: “bar”} Output: GET /foo HTTP/1.1 my-header: bar Support: Extended |
add map[string]string |
(Optional)
Add adds the given header (name, value) to the request before the action. It appends to any existing values associated with the header name. Input: GET /foo HTTP/1.1 my-header: foo Config: add: {“my-header”: “bar”} Output: GET /foo HTTP/1.1 my-header: foo bar Support: Extended |
remove []string |
(Optional)
Remove the given header(s) from the HTTP request before the action. The value of RemoveHeader is a list of HTTP header names. Note that the header names are case-insensitive [RFC-2616 4.2]. Input: GET /foo HTTP/1.1 my-header1: foo my-header2: bar my-header3: baz Config: remove: [“my-header1”, “my-header3”] Output: GET /foo HTTP/1.1 my-header2: bar Support: Extended |
(Appears on: HTTPRouteFilter)
HTTPRequestMirrorFilter defines configuration for the RequestMirror filter.
Field | Description |
---|---|
serviceName string |
(Optional)
ServiceName refers to the name of the Service to mirror matched requests to. When specified, this takes the place of BackendRef. If both BackendRef and ServiceName are specified, ServiceName will be given precedence. If the referent cannot be found, the rule is not included in the route. The controller should raise the “ResolvedRefs” condition on the Gateway with the “DegradedRoutes” reason. The gateway status for this route should be updated with a condition that describes the error more specifically. Support: Core |
backendRef LocalObjectReference |
(Optional)
BackendRef is a local object reference to mirror matched requests to. If both BackendRef and ServiceName are specified, ServiceName will be given precedence. If the referent cannot be found, the rule is not included in the route. The controller should raise the “ResolvedRefs” condition on the Gateway with the “DegradedRoutes” reason. The gateway status for this route should be updated with a condition that describes the error more specifically. Support: Custom |
port PortNumber |
Port specifies the destination port number to use for the backend referenced by the ServiceName or BackendRef field. |
(Appears on: HTTPRouteForwardTo, HTTPRouteRule)
HTTPRouteFilter defines additional processing steps that must be completed during the request or response lifecycle. HTTPRouteFilters are meant as an extension point to express additional processing that may be done in Gateway implementations. Some examples include request or response modification, implementing authentication strategies, rate-limiting, and traffic shaping. API guarantee/conformance is defined based on the type of the filter. TODO(hbagdi): re-render CRDs once controller-tools supports union tags: - kubernetes-sigs/controller-tools#298 - kubernetes-sigs/controller-tools#461
Field | Description |
---|---|
type HTTPRouteFilterType |
Type identifies the type of filter to apply. As with other API fields, types are classified into three conformance levels:
Implementers are encouraged to define custom implementation types to extend the core API with implementation-specific behavior. |
requestHeaderModifier HTTPRequestHeaderFilter |
(Optional)
RequestHeaderModifier defines a schema for a filter that modifies request headers. Support: Core |
requestMirror HTTPRequestMirrorFilter |
(Optional)
RequestMirror defines a schema for a filter that mirrors requests. Support: Extended |
extensionRef LocalObjectReference |
(Optional)
ExtensionRef is an optional, implementation-specific extension to the “filter” behavior. For example, resource “myroutefilter” in group “networking.acme.io”). ExtensionRef MUST NOT be used for core and extended filters. Support: Implementation-specific |
(Appears on: HTTPRouteFilter)
HTTPRouteFilterType identifies a type of HTTPRoute filter.
(Appears on: HTTPRouteRule)
HTTPRouteForwardTo defines how a HTTPRoute should forward a request.
Field | Description |
---|---|
serviceName string |
(Optional)
ServiceName refers to the name of the Service to forward matched requests to. When specified, this takes the place of BackendRef. If both BackendRef and ServiceName are specified, ServiceName will be given precedence. If the referent cannot be found, the route must be dropped from the Gateway. The controller should raise the “ResolvedRefs” condition on the Gateway with the “DegradedRoutes” reason. The gateway status for this route should be updated with a condition that describes the error more specifically. The protocol to use should be specified with the AppProtocol field on Service
resources. This field was introduced in Kubernetes 1.18. If using an earlier version
of Kubernetes, a Support: Core |
backendRef LocalObjectReference |
(Optional)
BackendRef is a reference to a backend to forward matched requests to. If both BackendRef and ServiceName are specified, ServiceName will be given precedence. If the referent cannot be found, the route must be dropped from the Gateway. The controller should raise the “ResolvedRefs” condition on the Gateway with the “DegradedRoutes” reason. The gateway status for this route should be updated with a condition that describes the error more specifically. Support: Custom |
port PortNumber |
Port specifies the destination port number to use for the backend referenced by the ServiceName or BackendRef field. Support: Core |
weight int32 |
Weight specifies the proportion of HTTP requests forwarded to the backend referenced by the ServiceName or BackendRef field. This is computed as weight/(sum of all weights in this ForwardTo list). For non-zero values, there may be some epsilon from the exact proportion defined here depending on the precision an implementation supports. Weight is not a percentage and the sum of weights does not need to equal 100. If only one backend is specified and it has a weight greater than 0, 100% of the traffic is forwarded to that backend. If weight is set to 0, no traffic should be forwarded for this entry. If unspecified, weight defaults to 1. Support: Core |
filters []HTTPRouteFilter |
(Optional)
Filters defined at this-level should be executed if and only if the request is being forwarded to the backend defined here. Support: Custom (For broader support of filters, use the Filters field in HTTPRouteRule.) |
(Appears on: HTTPRouteRule)
HTTPRouteMatch defines the predicate used to match requests to a given action. Multiple match types are ANDed together, i.e. the match will evaluate to true only if all conditions are satisfied.
For example, the match below will match a HTTP request only if its path
starts with /foo
AND it contains the version: "1"
header:
match:
path:
value: "/foo"
headers:
values:
version: "1"
Field | Description |
---|---|
path HTTPPathMatch |
Path specifies a HTTP request path matcher. If this field is not specified, a default prefix match on the “/” path is provided. |
headers HTTPHeaderMatch |
(Optional)
Headers specifies a HTTP request header matcher. |
extensionRef LocalObjectReference |
(Optional)
ExtensionRef is an optional, implementation-specific extension to the “match” behavior. For example, resource “myroutematcher” in group “networking.acme.io”. If the referent cannot be found, the rule is not included in the route. The controller should raise the “ResolvedRefs” condition on the Gateway with the “DegradedRoutes” reason. The gateway status for this route should be updated with a condition that describes the error more specifically. Support: custom |
(Appears on: HTTPRouteSpec)
HTTPRouteRule defines semantics for matching an HTTP request based on conditions, optionally executing additional processing steps, and forwarding the request to an API object.
Field | Description |
---|---|
matches []HTTPRouteMatch |
Matches define conditions used for matching the rule against incoming HTTP requests. Each match is independent, i.e. this rule will be matched if any one of the matches is satisfied. For example, take the following matches configuration:
For a request to match against this rule, a request should satisfy EITHER of the two conditions:
See the documentation for HTTPRouteMatch on how to specify multiple match conditions that should be ANDed together. If no matches are specified, the default is a prefix path match on “/”, which has the effect of matching every HTTP request. A client request may match multiple HTTP route rules. Matching precedence MUST be determined in order of the following criteria, continuing on ties: * The longest matching hostname. * The longest matching path. * The largest number of header matches * The oldest Route based on creation timestamp. For example, a Route with a creation timestamp of “2020-09-08 01:02:03” is given precedence over a Route with a creation timestamp of “2020-09-08 01:02:04”. * The Route appearing first in alphabetical order (namespace/name) for example, foo/bar is given precedence over foo/baz. |
filters []HTTPRouteFilter |
(Optional)
Filters define the filters that are applied to requests that match this rule. The effects of ordering of multiple behaviors are currently unspecified. This can change in the future based on feedback during the alpha stage. Conformance-levels at this level are defined based on the type of filter: - ALL core filters MUST be supported by all implementations. - Implementers are encouraged to support extended filters. - Implementation-specific custom filters have no API guarantees across implementations. Specifying a core filter multiple times has unspecified or custom conformance. Support: core |
forwardTo []HTTPRouteForwardTo |
(Optional)
ForwardTo defines the backend(s) where matching requests should be sent. If unspecified, the rule performs no forwarding. If unspecified and no filters are specified that would result in a response being sent, a 503 error code is returned. |
(Appears on: HTTPRoute)
HTTPRouteSpec defines the desired state of HTTPRoute
Field | Description |
---|---|
gateways RouteGateways |
Gateways defines which Gateways can use this Route. |
hostnames []Hostname |
(Optional)
Hostnames defines a set of hostname that should match against the HTTP Host header to select a HTTPRoute to process the request. Hostname is the fully qualified domain name of a network host, as defined by RFC 3986. Note the following deviations from the “host” part of the URI as defined in the RFC:
Incoming requests are matched against the hostnames before the HTTPRoute rules. If no hostname is specified, traffic is routed based on the HTTPRouteRules. Hostname can be “precise” which is a domain name without the terminating dot of a network host (e.g. “foo.example.com”) or “wildcard”, which is a domain name prefixed with a single wildcard label (e.g. “.example.com”). The wildcard character ‘’ must appear by itself as the first DNS label and matches only a single label. You cannot have a wildcard label by itself (e.g. Host == “*”). Requests will be matched against the Host field in the following order: 1. If Host is precise, the request matches this rule if the http host header is equal to Host. 2. If Host is a wildcard, then the request matches this rule if the http host header is to equal to the suffix (removing the first label) of the wildcard rule. Support: Core |
tls RouteTLSConfig |
(Optional)
TLS defines the TLS certificate to use for Hostnames defined in this Route. This configuration only takes effect if the AllowRouteOverride field is set to true in the associated Gateway resource. Collisions can happen if multiple HTTPRoutes define a TLS certificate for the same hostname. In such a case, conflict resolution guiding principles apply, specificallly, if hostnames are same and two different certificates are specified then the certificate in the oldest resource wins. Please note that HTTP Route-selection takes place after the TLS Handshake (ClientHello). Due to this, TLS certificate defined here will take precedence even if the request has the potential to match multiple routes (in case multiple HTTPRoutes share the same hostname). Support: Core |
rules []HTTPRouteRule |
Rules are a list of HTTP matchers, filters and actions. |
(Appears on: HTTPRoute)
HTTPRouteStatus defines the observed state of HTTPRoute.
Field | Description |
---|---|
RouteStatus RouteStatus |
(Members of |
(Appears on: HTTPHeaderMatch)
HeaderMatchType specifies the semantics of how HTTP header values should be compared. Valid HeaderMatchType values are:
- “Exact”
- “RegularExpression”
- “ImplementationSpecific”
(Appears on: HTTPRouteSpec, Listener, ListenerStatus, TLSRouteMatch)
Hostname is used to specify a hostname that should be matched.
(Appears on: GatewaySpec)
Listener embodies the concept of a logical endpoint where a Gateway can accept network connections. Each listener in a Gateway must have a unique combination of Hostname, Port, and Protocol. This will be enforced by a validating webhook.
Field | Description |
---|---|
hostname Hostname |
(Optional)
Hostname specifies the virtual hostname to match for protocol types that define this concept. When unspecified or “*”, all hostnames are matched. This field can be omitted for protocols that don’t require hostname based matching. Hostname is the fully qualified domain name of a network host, as defined by RFC 3986. Note the following deviations from the “host” part of the URI as defined in the RFC:
Hostname can be “precise” which is a domain name without the terminating dot of a network host (e.g. “foo.example.com”) or “wildcard”, which is a domain name prefixed with a single wildcard label (e.g. “.example.com”). The wildcard character ‘’ must appear by itself as the first DNS label and matches only a single label. Support: Core |
port PortNumber |
Port is the network port. Multiple listeners may use the same port, subject to the Listener compatibility rules. Support: Core |
protocol ProtocolType |
Protocol specifies the network protocol this listener expects to receive. The GatewayClass MUST apply the Hostname match appropriately for each protocol:
Support: Core |
tls GatewayTLSConfig |
(Optional)
TLS is the TLS configuration for the Listener. This field is required if the Protocol field is “HTTPS” or “TLS” and ignored otherwise. The association of SNIs to Certificate defined in GatewayTLSConfig is defined based on the Hostname field for this listener. The GatewayClass MUST use the longest matching SNI out of all available certificates for any TLS handshake. Support: Core |
routes RouteBindingSelector |
Routes specifies a schema for associating routes with the Listener using selectors. A Route is a resource capable of servicing a request and allows a cluster operator to expose a cluster resource (i.e. Service) by externally-reachable URL, load-balance traffic and terminate SSL/TLS. Typically, a route is a “HTTPRoute” or “TCPRoute” in group “networking.x-k8s.io”, however, an implementation may support other types of resources. The Routes selector MUST select a set of objects that are compatible with the application protocol specified in the Protocol field. Although a client request may technically match multiple route rules, only one rule may ultimately receive the request. Matching precedence MUST be determined in order of the following criteria:
All valid portions of a Route selected by this field should be supported. Invalid portions of a Route can be ignored (sometimes that will mean the full Route). If a portion of a Route transitions from valid to invalid, support for that portion of the Route should be dropped to ensure consistency. For example, even if a filter specified by a Route is invalid, the rest of the Route should still be supported. Support: Core |
ListenerConditionReason defines the set of reasons that explain why a particular Listener condition type has been raised.
ListenerConditionType is a type of condition associated with the listener. This type should be used with the ListenerStatus.Conditions field.
(Appears on: GatewayStatus)
ListenerStatus is the status associated with a Listener.
Field | Description |
---|---|
port PortNumber |
Port is the unique Listener port value for which this message is reporting the status. |
protocol ProtocolType |
Protocol is the Listener protocol value for which this message is reporting the status. |
hostname Hostname |
(Optional)
Hostname is the Listener hostname value for which this message is reporting the status. |
conditions []Kubernetes meta/v1.Condition |
Conditions describe the current condition of this listener. |
(Appears on: BackendTLSConfig, GatewayClassSpec, GatewayTLSConfig, HTTPRequestMirrorFilter, HTTPRouteFilter, HTTPRouteForwardTo, HTTPRouteMatch, RouteForwardTo, RouteTLSConfig, TCPRouteMatch, TLSRouteMatch, UDPRouteMatch)
LocalObjectReference identifies an API object within a known namespace.
Field | Description |
---|---|
group string |
Group is the group of the referent. |
kind string |
Kind is kind of the referent. |
name string |
Name is the name of the referent. |
(Appears on: HTTPPathMatch)
PathMatchType specifies the semantics of how HTTP paths should be compared. Valid PathMatchType values are:
- “Exact”
- “Prefix”
- “RegularExpression”
- “ImplementationSpecific”
Prefix and Exact paths must be syntactically valid: - Must begin with the ‘/’ character - Must not contain consecutive ‘/’ characters (e.g. /foo///, //). - For prefix paths, a trailing ‘/’ character in the Path is ignored, e.g. /abc and /abc/ specify the same match.
(Appears on: BackendRef, HTTPRequestMirrorFilter, HTTPRouteForwardTo, Listener, ListenerStatus, RouteForwardTo)
PortNumber defines a network port.
(Appears on: Listener, ListenerStatus)
ProtocolType defines the application protocol accepted by a Listener. Implementations are not required to accept all the defined protocols. If an implementation does not support a specified protocol, it should raise a “Detached” condition for the affected Listener with a reason of “UnsupportedProtocol”.
Core ProtocolType values are:
- “HTTP”
- “HTTPS”
- “TLS”
- “TCP”
- “UDP”
Implementations can define their own protocols if a core ProtocolType does not
exist. Such definitions must use prefixed name, such as
mycompany.com/my-custom-protocol
. Un-prefixed names are reserved for core
protocols. Any protocol defined by implementations will fall under custom
conformance.
(Appears on: Listener)
RouteBindingSelector defines a schema for associating routes with the Gateway. If Namespaces and Selector are defined, only routes matching both selectors are associated with the Gateway.
Field | Description |
---|---|
namespaces RouteNamespaces |
Namespaces indicates in which namespaces Routes should be selected for this Gateway. This is restricted to the namespace of this Gateway by default. Support: Core |
selector Kubernetes meta/v1.LabelSelector |
(Optional)
Selector specifies a set of route labels used for selecting routes to associate with the Gateway. If this Selector is defined, only routes matching the Selector are associated with the Gateway. An empty Selector matches all routes. Support: Core |
group string |
Group is the group of the route resource to select. Omitting the value or specifying the empty string indicates the networking.x-k8s.io API group. For example, use the following to select an HTTPRoute: routes: kind: HTTPRoute Otherwise, if an alternative API group is desired, specify the desired group: routes: group: acme.io kind: FooRoute Support: Core |
kind string |
Kind is the kind of the route resource to select. Kind MUST correspond to kinds of routes that are compatible with the application protocol specified in the Listener’s Protocol field. If an implementation does not support or recognize this resource type, it SHOULD set the “ResolvedRefs” condition to false for this listener with the “InvalidRoutesRef” reason. Support: Core |
RouteConditionType is a type of condition for a route.
(Appears on: TCPRouteRule, TLSRouteRule, UDPRouteRule)
RouteForwardTo defines how a Route should forward a request.
Field | Description |
---|---|
serviceName string |
(Optional)
ServiceName refers to the name of the Service to forward matched requests to. When specified, this takes the place of BackendRef. If both BackendRef and ServiceName are specified, ServiceName will be given precedence. If the referent cannot be found, the rule is not included in the route. The controller should raise the “ResolvedRefs” condition on the Gateway with the “DegradedRoutes” reason. The gateway status for this route should be updated with a condition that describes the error more specifically. The protocol to use is defined using AppProtocol field (introduced in
Kubernetes 1.18) in the Service resource. In the absence of the
AppProtocol field a Support: Core |
backendRef LocalObjectReference |
(Optional)
BackendRef is a reference to a backend to forward matched requests to. If both BackendRef and ServiceName are specified, ServiceName will be given precedence. If the referent cannot be found, the rule is not included in the route. The controller should raise the “ResolvedRefs” condition on the Gateway with the “DegradedRoutes” reason. The gateway status for this route should be updated with a condition that describes the error more specifically. Support: Custom |
port PortNumber |
Port specifies the destination port number to use for the backend referenced by the ServiceName or BackendRef field. Support: Core |
weight int32 |
Weight specifies the proportion of HTTP requests forwarded to the backend referenced by the ServiceName or BackendRef field. This is computed as weight/(sum of all weights in this ForwardTo list). For non-zero values, there may be some epsilon from the exact proportion defined here depending on the precision an implementation supports. Weight is not a percentage and the sum of weights does not need to equal 100. If only one backend is specified and it has a weight greater than 0, 100% of the traffic is forwarded to that backend. If weight is set to 0, no traffic should be forwarded for this entry. If unspecified, weight defaults to 1. Support: Extended |
(Appears on: RouteStatus)
RouteGatewayStatus describes the status of a route with respect to an associated Gateway.
Field | Description |
---|---|
gatewayRef GatewayReference |
GatewayRef is a reference to a Gateway object that is associated with the route. |
conditions []Kubernetes meta/v1.Condition |
Conditions describes the status of the route with respect to the Gateway. For example, the “Admitted” condition indicates whether the route has been admitted or rejected by the Gateway, and why. Note that the route’s availability is also subject to the Gateway’s own status conditions and listener status. |
(Appears on: HTTPRouteSpec, TCPRouteSpec, TLSRouteSpec, UDPRouteSpec)
RouteGateways defines which Gateways will be able to use a route. If this field results in preventing the selection of a Route by a Gateway, an “Admitted” condition with a status of false must be set for the Gateway on that Route.
Field | Description |
---|---|
allow GatewayAllowType |
Allow indicates which Gateways will be allowed to use this route. Possible values are: * All: Gateways in any namespace can use this route. * FromList: Only Gateways specified in GatewayRefs may use this route. * SameNamespace: Only Gateways in the same namespace may use this route. |
gatewayRefs []GatewayReference |
(Optional)
GatewayRefs must be specified when Allow is set to “FromList”. In that case, only Gateways referenced in this list will be allowed to use this route. This field is ignored for other values of “Allow”. |
(Appears on: RouteBindingSelector)
RouteNamespaces indicate which namespaces Routes should be selected from.
Field | Description |
---|---|
from RouteSelectType |
From indicates where Routes will be selected for this Gateway. Possible values are: * All: Routes in all namespaces may be used by this Gateway. * Selector: Routes in namespaces selected by the selector may be used by this Gateway. * Same: Only Routes in the same namespace may be used by this Gateway. Support: Core |
selector Kubernetes meta/v1.LabelSelector |
(Optional)
Selector must be specified when From is set to “Selector”. In that case, only Routes in Namespaces matching this Selector will be selected by this Gateway. This field is ignored for other values of “From”. Support: Core |
(Appears on: RouteNamespaces)
RouteSelectType specifies where Routes should be selected by a Gateway.
(Appears on: HTTPRouteStatus, TCPRouteStatus, TLSRouteStatus, UDPRouteStatus)
RouteStatus defines the observed state that is required across all route types.
Field | Description |
---|---|
gateways []RouteGatewayStatus |
Gateways is a list of the Gateways that are associated with the route, and the status of the route with respect to each of these Gateways. When a Gateway selects this route, the controller that manages the Gateway should add an entry to this list when the controller first sees the route and should update the entry as appropriate when the route is modified. A maximum of 100 Gateways will be represented in this list. If this list is full, there may be additional Gateways using this Route that are not included in the list. |
(Appears on: HTTPRouteSpec)
RouteTLSConfig describes a TLS configuration defined at the Route level.
Field | Description |
---|---|
certificateRef LocalObjectReference |
CertificateRef refers to a Kubernetes object that contains a TLS certificate and private key. This certificate MUST be used for TLS handshakes for the domain this RouteTLSConfig is associated with. If an entry in this list omits or specifies the empty string for both the group and kind, the resource defaults to “secrets”. An implementation may support other resources (for example, resource “mycertificates” in group “networking.acme.io”). Support: Core (Kubernetes Secrets) Support: Implementation-specific (Other resource types) |
(Appears on: TCPRouteRule)
TCPRouteMatch defines the predicate used to match connections to a given action.
Field | Description |
---|---|
extensionRef LocalObjectReference |
(Optional)
ExtensionRef is an optional, implementation-specific extension to the “match” behavior. For example, resource “mytcproutematcher” in group “networking.acme.io”. If the referent cannot be found, the rule is not included in the route. The controller should raise the “ResolvedRefs” condition on the Gateway with the “DegradedRoutes” reason. The gateway status for this route should be updated with a condition that describes the error more specifically. Support: custom |
(Appears on: TCPRouteSpec)
TCPRouteRule is the configuration for a given rule.
Field | Description |
---|---|
matches []TCPRouteMatch |
(Optional)
Matches define conditions used for matching the rule against incoming TCP connections. Each match is independent, i.e. this rule will be matched if any one of the matches is satisfied. If unspecified, all requests from the associated gateway TCP listener will match. |
forwardTo []RouteForwardTo |
ForwardTo defines the backend(s) where matching requests should be sent. |
(Appears on: TCPRoute)
TCPRouteSpec defines the desired state of TCPRoute
Field | Description |
---|---|
rules []TCPRouteRule |
Rules are a list of TCP matchers and actions. |
gateways RouteGateways |
Gateways defines which Gateways can use this Route. |
(Appears on: TCPRoute)
TCPRouteStatus defines the observed state of TCPRoute
Field | Description |
---|---|
RouteStatus RouteStatus |
(Members of |
(Appears on: GatewayTLSConfig)
TLSModeType type defines behavior of gateway with TLS protocol.
(Appears on: GatewayTLSConfig)
TLSOverridePolicy defines a schema for overriding TLS settings at the Route level.
Field | Description |
---|---|
certificate TLSRouteOverrideType |
Certificate dictates if TLS certificates can be configured via Routes. If set to ‘Allow’, a TLS certificate for a hostname defined in a Route takes precedence over the certificate defined in Gateway. Support: Core |
(Appears on: TLSRouteRule)
TLSRouteMatch defines the predicate used to match connections to a given action.
Field | Description |
---|---|
snis []Hostname |
(Optional)
SNIs defines a set of SNI names that should match against the SNI attribute of TLS ClientHello message in TLS handshake. SNI can be “precise” which is a domain name without the terminating dot of a network host (e.g. “foo.example.com”) or “wildcard”, which is a domain name prefixed with a single wildcard label (e.g. “.example.com”). The wildcard character ‘’ must appear by itself as the first DNS label and matches only a single label. You cannot have a wildcard label by itself (e.g. Host == “*”). Requests will be matched against the Host field in the following order:
Support: core |
extensionRef LocalObjectReference |
(Optional)
ExtensionRef is an optional, implementation-specific extension to the “match” behavior. For example, resource “mytlsroutematcher” in group “networking.acme.io”. If the referent cannot be found, the rule is not included in the route. The controller should raise the “ResolvedRefs” condition on the Gateway with the “DegradedRoutes” reason. The gateway status for this route should be updated with a condition that describes the error more specifically. Support: custom |
(Appears on: TLSOverridePolicy)
TLSRouteOverrideType type defines the level of allowance for Routes to override a specific TLS setting.
(Appears on: TLSRouteSpec)
TLSRouteRule is the configuration for a given rule.
Field | Description |
---|---|
matches []TLSRouteMatch |
(Optional)
Matches define conditions used for matching the rule against an incoming TLS handshake. Each match is independent, i.e. this rule will be matched if any one of the matches is satisfied. If unspecified, all requests from the associated gateway TLS listener will match. |
forwardTo []RouteForwardTo |
ForwardTo defines the backend(s) where matching requests should be sent. |
(Appears on: TLSRoute)
TLSRouteSpec defines the desired state of TLSRoute
Field | Description |
---|---|
rules []TLSRouteRule |
Rules are a list of TLS matchers and actions. |
gateways RouteGateways |
Gateways defines which Gateways can use this Route. |
(Appears on: TLSRoute)
TLSRouteStatus defines the observed state of TLSRoute
Field | Description |
---|---|
RouteStatus RouteStatus |
(Members of |
(Appears on: UDPRouteRule)
UDPRouteMatch defines the predicate used to match packets to a given action.
Field | Description |
---|---|
extensionRef LocalObjectReference |
(Optional)
ExtensionRef is an optional, implementation-specific extension to the “match” behavior. For example, resource “myudproutematcher” in group “networking.acme.io”. If the referent cannot be found, the rule is not included in the route. The controller should raise the “ResolvedRefs” condition on the Gateway with the “DegradedRoutes” reason. The gateway status for this route should be updated with a condition that describes the error more specifically. Support: custom |
(Appears on: UDPRouteSpec)
UDPRouteRule is the configuration for a given rule.
Field | Description |
---|---|
matches []UDPRouteMatch |
(Optional)
Matches define conditions used for matching the rule against incoming UDP connections. Each match is independent, i.e. this rule will be matched if any one of the matches is satisfied. If unspecified, all requests from the associated gateway UDP listener will match. |
forwardTo []RouteForwardTo |
ForwardTo defines the backend(s) where matching requests should be sent. |
(Appears on: UDPRoute)
UDPRouteSpec defines the desired state of UDPRoute.
Field | Description |
---|---|
rules []UDPRouteRule |
Rules are a list of UDP matchers and actions. |
gateways RouteGateways |
Gateways defines which Gateways can use this Route. |
(Appears on: UDPRoute)
UDPRouteStatus defines the observed state of UDPRoute.
Field | Description |
---|---|
RouteStatus RouteStatus |
(Members of |
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