Traefik & Kubernetes with Gateway API¶
The Kubernetes Gateway API, The Experimental Way.
Gateway API is the evolution of Kubernetes APIs that relate to Services, such as Ingress.
The Gateway API project is part of Kubernetes, working under SIG-NETWORK.
The Kubernetes Gateway provider is a Traefik implementation of the Gateway API specifications from the Kubernetes Special Interest Groups (SIGs).
This provider is proposed as an experimental feature and partially supports the Gateway API v0.2.0 specification.
Enabling The Experimental Kubernetes Gateway Provider
Since this provider is still experimental, it needs to be activated in the experimental section of the static configuration.
experimental:
kubernetesGateway: true
providers:
kubernetesGateway: {}
#...[experimental]
kubernetesGateway = true
[providers.kubernetesGateway]
#...--experimental.kubernetesgateway=true --providers.kubernetesgateway=true #...Configuration Requirements¶
All Steps for a Successful Deployment
- Add/update the Kubernetes Gateway API definitions.
- Add/update the RBAC for the Traefik custom resources.
- Add all needed Kubernetes Gateway API resources.
Examples¶
Kubernetes Gateway Provider Basic Example
---
kind: GatewayClass
apiVersion: networking.x-k8s.io/v1alpha1
metadata:
name: my-gateway-class
spec:
controller: traefik.io/gateway-controller
---
kind: Gateway
apiVersion: networking.x-k8s.io/v1alpha1
metadata:
name: my-gateway
spec:
gatewayClassName: my-gateway-class
listeners:
- protocol: HTTPS
port: 443
tls:
certificateRef:
group: "core"
kind: "Secret"
name: "mysecret"
routes:
kind: HTTPRoute
selector:
matchLabels:
app: foo
---
kind: HTTPRoute
apiVersion: networking.x-k8s.io/v1alpha1
metadata:
name: http-app-1
namespace: default
labels:
app: foo
spec:
hostnames:
- "whoami"
rules:
- matches:
- path:
type: Exact
value: /foo
forwardTo:
- serviceName: whoami
port: 80
weight: 1---
kind: Deployment
apiVersion: apps/v1
metadata:
name: whoami
spec:
replicas: 2
selector:
matchLabels:
app: whoami
template:
metadata:
labels:
app: whoami
spec:
containers:
- name: whoami
image: traefik/whoami
---
apiVersion: v1
kind: Service
metadata:
name: whoami
spec:
ports:
- protocol: TCP
port: 80
selector:
app: whoami---
apiVersion: v1
kind: ServiceAccount
metadata:
name: traefik-controller
---
kind: Deployment
apiVersion: apps/v1
metadata:
name: traefik
spec:
replicas: 1
selector:
matchLabels:
app: traefik-lb
template:
metadata:
labels:
app: traefik-lb
spec:
serviceAccountName: traefik-controller
containers:
- name: traefik
image: traefik/traefik:latest
imagePullPolicy: IfNotPresent
args:
- --entrypoints.web.address=:80
- --entrypoints.websecure.address=:443
- --experimental.kubernetesgateway
- --providers.kubernetesgateway
ports:
- name: web
containerPort: 80
- name: websecure
containerPort: 443
---
apiVersion: v1
kind: Service
metadata:
name: traefik
spec:
selector:
app: traefik-lb
ports:
- protocol: TCP
port: 80
targetPort: web
name: web
- protocol: TCP
port: 443
targetPort: websecure
name: websecure
type: LoadBalancer# All resources definition must be declared
---
apiVersion: apiextensions.k8s.io/v1
kind: CustomResourceDefinition
metadata:
annotations:
controller-gen.kubebuilder.io/version: v0.4.1
creationTimestamp: null
name: gatewayclasses.networking.x-k8s.io
spec:
group: networking.x-k8s.io
names:
kind: GatewayClass
listKind: GatewayClassList
plural: gatewayclasses
shortNames:
- gc
singular: gatewayclass
scope: Cluster
versions:
- additionalPrinterColumns:
- jsonPath: .spec.controller
name: Controller
type: string
name: v1alpha1
schema:
openAPIV3Schema:
description: "GatewayClass describes a class of Gateways available to the user for creating Gateway resources. \n GatewayClass is a Cluster level resource."
properties:
apiVersion:
description: 'APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'
type: string
kind:
description: 'Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'
type: string
metadata:
type: object
spec:
description: Spec defines the desired state of GatewayClass.
properties:
controller:
description: "Controller is a domain/path string that indicates the controller that is managing Gateways of this class. \n Example: \"acme.io/gateway-controller\". \n This field is not mutable and cannot be empty. \n 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). \n Support: Core"
maxLength: 253
type: string
parametersRef:
description: "ParametersRef is a reference to a resource that contains the configuration parameters corresponding to the GatewayClass. This is optional if the controller does not require any additional configuration. \n ParametersRef can reference a standard Kubernetes resource, i.e. ConfigMap, or an implementation-specific custom resource. The resource can be cluster-scoped or namespace-scoped. \n If the referent cannot be found, the GatewayClass's \"InvalidParameters\" status condition will be true. \n Support: Custom"
properties:
group:
description: Group is the group of the referent.
maxLength: 253
minLength: 1
type: string
kind:
description: Kind is kind of the referent.
maxLength: 253
minLength: 1
type: string
name:
description: Name is the name of the referent.
maxLength: 253
minLength: 1
type: string
namespace:
description: Namespace is the namespace of the referent. This field is required when scope is set to "Namespace" and ignored when scope is set to "Cluster".
maxLength: 253
minLength: 1
type: string
scope:
default: Cluster
description: Scope represents if the referent is a Cluster or Namespace scoped resource. This may be set to "Cluster" or "Namespace".
enum:
- Cluster
- Namespace
type: string
required:
- group
- kind
- name
type: object
required:
- controller
type: object
status:
default:
conditions:
- lastTransitionTime: "1970-01-01T00:00:00Z"
message: Waiting for controller
reason: Waiting
status: "False"
type: Admitted
description: Status defines the current state of GatewayClass.
properties:
conditions:
default:
- lastTransitionTime: "1970-01-01T00:00:00Z"
message: Waiting for controller
reason: Waiting
status: "False"
type: Admitted
description: "Conditions is the current status from the controller for this GatewayClass. \n Controllers should prefer to publish conditions using values of GatewayClassConditionType for the type of each Condition."
items:
description: "Condition contains details for one aspect of the current state of this API Resource. --- This struct is intended for direct use as an array at the field path .status.conditions. For example, type FooStatus struct{ // Represents the observations of a foo's current state. // Known .status.conditions.type are: \"Available\", \"Progressing\", and \"Degraded\" // +patchMergeKey=type // +patchStrategy=merge // +listType=map // +listMapKey=type Conditions []metav1.Condition `json:\"conditions,omitempty\" patchStrategy:\"merge\" patchMergeKey:\"type\" protobuf:\"bytes,1,rep,name=conditions\"` \n // other fields }"
properties:
lastTransitionTime:
description: lastTransitionTime is the last time the condition transitioned from one status to another. This should be when the underlying condition changed. If that is not known, then using the time when the API field changed is acceptable.
format: date-time
type: string
message:
description: message is a human readable message indicating details about the transition. This may be an empty string.
maxLength: 32768
type: string
observedGeneration:
description: observedGeneration represents the .metadata.generation that the condition was set based upon. For instance, if .metadata.generation is currently 12, but the .status.conditions[x].observedGeneration is 9, the condition is out of date with respect to the current state of the instance.
format: int64
minimum: 0
type: integer
reason:
description: reason contains a programmatic identifier indicating the reason for the condition's last transition. Producers of specific condition types may define expected values and meanings for this field, and whether the values are considered a guaranteed API. The value should be a CamelCase string. This field may not be empty.
maxLength: 1024
minLength: 1
pattern: ^[A-Za-z]([A-Za-z0-9_,:]*[A-Za-z0-9_])?$
type: string
status:
description: status of the condition, one of True, False, Unknown.
enum:
- "True"
- "False"
- Unknown
type: string
type:
description: type of condition in CamelCase or in foo.example.com/CamelCase. --- Many .condition.type values are consistent across resources like Available, but because arbitrary conditions can be useful (see .node.status.conditions), the ability to deconflict is important. The regex it matches is (dns1123SubdomainFmt/)?(qualifiedNameFmt)
maxLength: 316
pattern: ^([a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*/)?(([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9])$
type: string
required:
- lastTransitionTime
- message
- reason
- status
- type
type: object
maxItems: 8
type: array
x-kubernetes-list-map-keys:
- type
x-kubernetes-list-type: map
type: object
type: object
served: true
storage: true
subresources:
status: {}
status:
acceptedNames:
kind: ""
plural: ""
conditions: []
storedVersions: []
---
apiVersion: apiextensions.k8s.io/v1
kind: CustomResourceDefinition
metadata:
annotations:
controller-gen.kubebuilder.io/version: v0.4.1
creationTimestamp: null
name: gateways.networking.x-k8s.io
spec:
group: networking.x-k8s.io
names:
kind: Gateway
listKind: GatewayList
plural: gateways
shortNames:
- gtw
singular: gateway
scope: Namespaced
versions:
- additionalPrinterColumns:
- jsonPath: .spec.gatewayClassName
name: Class
type: string
name: v1alpha1
schema:
openAPIV3Schema:
description: "Gateway represents an instantiation of a service-traffic handling infrastructure by binding Listeners to a set of IP addresses. \n 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."
properties:
apiVersion:
description: 'APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'
type: string
kind:
description: 'Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'
type: string
metadata:
type: object
spec:
description: Spec defines the desired state of Gateway.
properties:
addresses:
description: "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. \n If no Addresses are specified, the GatewayClass may schedule the Gateway in an implementation-defined manner, assigning an appropriate set of Addresses. \n The GatewayClass MUST bind all Listeners to every GatewayAddress that it assigns to the Gateway. \n Support: Core"
items:
description: GatewayAddress describes an address that can be bound to a Gateway.
properties:
type:
default: IPAddress
description: "Type of the address. \n Support: Extended"
enum:
- IPAddress
- NamedAddress
type: string
value:
description: "Value of the address. The validity of the values will depend on the type and support by the controller. \n Examples: `1.2.3.4`, `128::1`, `my-ip-address`."
maxLength: 253
minLength: 1
type: string
required:
- value
type: object
maxItems: 16
type: array
gatewayClassName:
description: GatewayClassName used for this Gateway. This is the name of a GatewayClass resource.
maxLength: 253
minLength: 1
type: string
listeners:
description: "Listeners associated with this Gateway. Listeners define logical endpoints that are bound on this Gateway's addresses. At least one Listener MUST be specified. \n 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. \n For example, an implementation might consider Listeners to be compatible with each other if all of the following conditions are met: \n 1. Either each Listener within the group specifies the \"HTTP\" Protocol or each Listener within the group specifies either the \"HTTPS\" or \"TLS\" Protocol. \n 2. Each Listener within the group specifies a Hostname that is unique within the group. \n 3. As a special case, one Listener within a group may omit Hostname, in which case this Listener matches when no other Listener matches. \n 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. \n 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. \n Support: Core"
items:
description: 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.
properties:
hostname:
description: "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. \n 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: \n 1. IP literals are not allowed. 2. The `:` delimiter is not respected because ports are not allowed. \n 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. \n Support: Core"
maxLength: 253
minLength: 1
type: string
port:
description: "Port is the network port. Multiple listeners may use the same port, subject to the Listener compatibility rules. \n Support: Core"
format: int32
maximum: 65535
minimum: 1
type: integer
protocol:
description: "Protocol specifies the network protocol this listener expects to receive. The GatewayClass MUST apply the Hostname match appropriately for each protocol: \n * For the \"TLS\" protocol, the Hostname match MUST be applied to the [SNI](https://tools.ietf.org/html/rfc6066#section-3) server name offered by the client. * For the \"HTTP\" protocol, the Hostname match MUST be applied to the host portion of the [effective request URI](https://tools.ietf.org/html/rfc7230#section-5.5) or the [:authority pseudo-header](https://tools.ietf.org/html/rfc7540#section-8.1.2.3) * For the \"HTTPS\" protocol, the Hostname match MUST be applied at both the TLS and HTTP protocol layers. \n Support: Core"
type: string
routes:
description: "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. \n The Routes selector MUST select a set of objects that are compatible with the application protocol specified in the Protocol field. \n 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: \n * The most specific match. For example, the most specific HTTPRoute match is determined by the longest matching combination of hostname and path. * 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\". * If everything else is equivalent, the Route appearing first in alphabetical order (namespace/name) should be given precedence. For example, foo/bar is given precedence over foo/baz. \n 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. \n Support: Core"
properties:
group:
default: networking.x-k8s.io
description: "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: \n routes: kind: HTTPRoute \n Otherwise, if an alternative API group is desired, specify the desired group: \n routes: group: acme.io kind: FooRoute \n Support: Core"
maxLength: 253
minLength: 1
type: string
kind:
description: "Kind is the kind of the route resource to select. \n Kind MUST correspond to kinds of routes that are compatible with the application protocol specified in the Listener's Protocol field. \n 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. \n Support: Core"
type: string
namespaces:
default:
from: Same
description: "Namespaces indicates in which namespaces Routes should be selected for this Gateway. This is restricted to the namespace of this Gateway by default. \n Support: Core"
properties:
from:
default: Same
description: "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. \n Support: Core"
enum:
- All
- Selector
- Same
type: string
selector:
description: "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\". \n Support: Core"
properties:
matchExpressions:
description: matchExpressions is a list of label selector requirements. The requirements are ANDed.
items:
description: A label selector requirement is a selector that contains values, a key, and an operator that relates the key and values.
properties:
key:
description: key is the label key that the selector applies to.
type: string
operator:
description: operator represents a key's relationship to a set of values. Valid operators are In, NotIn, Exists and DoesNotExist.
type: string
values:
description: values is an array of string values. If the operator is In or NotIn, the values array must be non-empty. If the operator is Exists or DoesNotExist, the values array must be empty. This array is replaced during a strategic merge patch.
items:
type: string
type: array
required:
- key
- operator
type: object
type: array
matchLabels:
additionalProperties:
type: string
description: matchLabels is a map of {key,value} pairs. A single {key,value} in the matchLabels map is equivalent to an element of matchExpressions, whose key field is "key", the operator is "In", and the values array contains only "value". The requirements are ANDed.
type: object
type: object
type: object
selector:
description: "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. \n Support: Core"
properties:
matchExpressions:
description: matchExpressions is a list of label selector requirements. The requirements are ANDed.
items:
description: A label selector requirement is a selector that contains values, a key, and an operator that relates the key and values.
properties:
key:
description: key is the label key that the selector applies to.
type: string
operator:
description: operator represents a key's relationship to a set of values. Valid operators are In, NotIn, Exists and DoesNotExist.
type: string
values:
description: values is an array of string values. If the operator is In or NotIn, the values array must be non-empty. If the operator is Exists or DoesNotExist, the values array must be empty. This array is replaced during a strategic merge patch.
items:
type: string
type: array
required:
- key
- operator
type: object
type: array
matchLabels:
additionalProperties:
type: string
description: matchLabels is a map of {key,value} pairs. A single {key,value} in the matchLabels map is equivalent to an element of matchExpressions, whose key field is "key", the operator is "In", and the values array contains only "value". The requirements are ANDed.
type: object
type: object
required:
- kind
type: object
tls:
description: "TLS is the TLS configuration for the Listener. This field is required if the Protocol field is \"HTTPS\" or \"TLS\" and ignored otherwise. \n The association of SNIs to Certificate defined in GatewayTLSConfig is defined based on the Hostname field for this listener. \n The GatewayClass MUST use the longest matching SNI out of all available certificates for any TLS handshake. \n Support: Core"
properties:
certificateRef:
description: "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. \n This field is required when mode is set to \"Terminate\" (default) and optional otherwise. \n 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\"). \n Support: Core (Kubernetes Secrets) \n Support: Implementation-specific (Other resource types)"
properties:
group:
description: Group is the group of the referent.
maxLength: 253
minLength: 1
type: string
kind:
description: Kind is kind of the referent.
maxLength: 253
minLength: 1
type: string
name:
description: Name is the name of the referent.
maxLength: 253
minLength: 1
type: string
required:
- group
- kind
- name
type: object
mode:
default: Terminate
description: "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. This mode requires certificateRef to be set. - 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. \n Support: Core"
enum:
- Terminate
- Passthrough
type: string
options:
additionalProperties:
type: string
description: "Options are a list of key/value pairs to give extended options to the provider. \n 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. \n Support: Implementation-specific"
type: object
routeOverride:
default:
certificate: Deny
description: "RouteOverride dictates if TLS settings can be configured via Routes or not. \n CertificateRef must be defined even if `routeOverride.certificate` is set to 'Allow' as it will be used as the default certificate for the listener. \n Support: Core"
properties:
certificate:
default: Deny
description: "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. \n Support: Core"
enum:
- Allow
- Deny
type: string
type: object
type: object
required:
- port
- protocol
- routes
type: object
maxItems: 64
minItems: 1
type: array
required:
- gatewayClassName
- listeners
type: object
status:
default:
conditions:
- lastTransitionTime: "1970-01-01T00:00:00Z"
message: Waiting for controller
reason: NotReconciled
status: "False"
type: Scheduled
description: Status defines the current state of Gateway.
properties:
addresses:
description: "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. \n These addresses should all be of type \"IPAddress\"."
items:
description: GatewayAddress describes an address that can be bound to a Gateway.
properties:
type:
default: IPAddress
description: "Type of the address. \n Support: Extended"
enum:
- IPAddress
- NamedAddress
type: string
value:
description: "Value of the address. The validity of the values will depend on the type and support by the controller. \n Examples: `1.2.3.4`, `128::1`, `my-ip-address`."
maxLength: 253
minLength: 1
type: string
required:
- value
type: object
maxItems: 16
type: array
conditions:
default:
- lastTransitionTime: "1970-01-01T00:00:00Z"
message: Waiting for controller
reason: NotReconciled
status: "False"
type: Scheduled
description: "Conditions describe the current conditions of the Gateway. \n Implementations should prefer to express Gateway conditions using the `GatewayConditionType` and `GatewayConditionReason` constants so that operators and tools can converge on a common vocabulary to describe Gateway state. \n Known condition types are: \n * \"Scheduled\" * \"Ready\""
items:
description: "Condition contains details for one aspect of the current state of this API Resource. --- This struct is intended for direct use as an array at the field path .status.conditions. For example, type FooStatus struct{ // Represents the observations of a foo's current state. // Known .status.conditions.type are: \"Available\", \"Progressing\", and \"Degraded\" // +patchMergeKey=type // +patchStrategy=merge // +listType=map // +listMapKey=type Conditions []metav1.Condition `json:\"conditions,omitempty\" patchStrategy:\"merge\" patchMergeKey:\"type\" protobuf:\"bytes,1,rep,name=conditions\"` \n // other fields }"
properties:
lastTransitionTime:
description: lastTransitionTime is the last time the condition transitioned from one status to another. This should be when the underlying condition changed. If that is not known, then using the time when the API field changed is acceptable.
format: date-time
type: string
message:
description: message is a human readable message indicating details about the transition. This may be an empty string.
maxLength: 32768
type: string
observedGeneration:
description: observedGeneration represents the .metadata.generation that the condition was set based upon. For instance, if .metadata.generation is currently 12, but the .status.conditions[x].observedGeneration is 9, the condition is out of date with respect to the current state of the instance.
format: int64
minimum: 0
type: integer
reason:
description: reason contains a programmatic identifier indicating the reason for the condition's last transition. Producers of specific condition types may define expected values and meanings for this field, and whether the values are considered a guaranteed API. The value should be a CamelCase string. This field may not be empty.
maxLength: 1024
minLength: 1
pattern: ^[A-Za-z]([A-Za-z0-9_,:]*[A-Za-z0-9_])?$
type: string
status:
description: status of the condition, one of True, False, Unknown.
enum:
- "True"
- "False"
- Unknown
type: string
type:
description: type of condition in CamelCase or in foo.example.com/CamelCase. --- Many .condition.type values are consistent across resources like Available, but because arbitrary conditions can be useful (see .node.status.conditions), the ability to deconflict is important. The regex it matches is (dns1123SubdomainFmt/)?(qualifiedNameFmt)
maxLength: 316
pattern: ^([a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*/)?(([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9])$
type: string
required:
- lastTransitionTime
- message
- reason
- status
- type
type: object
maxItems: 8
type: array
x-kubernetes-list-map-keys:
- type
x-kubernetes-list-type: map
listeners:
description: Listeners provide status for each unique listener port defined in the Spec.
items:
description: ListenerStatus is the status associated with a Listener.
properties:
conditions:
description: Conditions describe the current condition of this listener.
items:
description: "Condition contains details for one aspect of the current state of this API Resource. --- This struct is intended for direct use as an array at the field path .status.conditions. For example, type FooStatus struct{ // Represents the observations of a foo's current state. // Known .status.conditions.type are: \"Available\", \"Progressing\", and \"Degraded\" // +patchMergeKey=type // +patchStrategy=merge // +listType=map // +listMapKey=type Conditions []metav1.Condition `json:\"conditions,omitempty\" patchStrategy:\"merge\" patchMergeKey:\"type\" protobuf:\"bytes,1,rep,name=conditions\"` \n // other fields }"
properties:
lastTransitionTime:
description: lastTransitionTime is the last time the condition transitioned from one status to another. This should be when the underlying condition changed. If that is not known, then using the time when the API field changed is acceptable.
format: date-time
type: string
message:
description: message is a human readable message indicating details about the transition. This may be an empty string.
maxLength: 32768
type: string
observedGeneration:
description: observedGeneration represents the .metadata.generation that the condition was set based upon. For instance, if .metadata.generation is currently 12, but the .status.conditions[x].observedGeneration is 9, the condition is out of date with respect to the current state of the instance.
format: int64
minimum: 0
type: integer
reason:
description: reason contains a programmatic identifier indicating the reason for the condition's last transition. Producers of specific condition types may define expected values and meanings for this field, and whether the values are considered a guaranteed API. The value should be a CamelCase string. This field may not be empty.
maxLength: 1024
minLength: 1
pattern: ^[A-Za-z]([A-Za-z0-9_,:]*[A-Za-z0-9_])?$
type: string
status:
description: status of the condition, one of True, False, Unknown.
enum:
- "True"
- "False"
- Unknown
type: string
type:
description: type of condition in CamelCase or in foo.example.com/CamelCase. --- Many .condition.type values are consistent across resources like Available, but because arbitrary conditions can be useful (see .node.status.conditions), the ability to deconflict is important. The regex it matches is (dns1123SubdomainFmt/)?(qualifiedNameFmt)
maxLength: 316
pattern: ^([a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*/)?(([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9])$
type: string
required:
- lastTransitionTime
- message
- reason
- status
- type
type: object
maxItems: 8
type: array
x-kubernetes-list-map-keys:
- type
x-kubernetes-list-type: map
hostname:
description: Hostname is the Listener hostname value for which this message is reporting the status.
maxLength: 253
minLength: 1
type: string
port:
description: Port is the unique Listener port value for which this message is reporting the status.
format: int32
maximum: 65535
minimum: 1
type: integer
protocol:
description: Protocol is the Listener protocol value for which this message is reporting the status.
type: string
required:
- conditions
- port
- protocol
type: object
maxItems: 64
type: array
x-kubernetes-list-map-keys:
- port
x-kubernetes-list-type: map
type: object
type: object
served: true
storage: true
subresources:
status: {}
status:
acceptedNames:
kind: ""
plural: ""
conditions: []
storedVersions: []
---
apiVersion: apiextensions.k8s.io/v1
kind: CustomResourceDefinition
metadata:
annotations:
controller-gen.kubebuilder.io/version: v0.4.1
creationTimestamp: null
name: httproutes.networking.x-k8s.io
spec:
group: networking.x-k8s.io
names:
kind: HTTPRoute
listKind: HTTPRouteList
plural: httproutes
singular: httproute
scope: Namespaced
versions:
- additionalPrinterColumns:
- jsonPath: .spec.hostnames
name: Hostnames
type: string
name: v1alpha1
schema:
openAPIV3Schema:
description: HTTPRoute is the Schema for the HTTPRoute resource.
properties:
apiVersion:
description: 'APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'
type: string
kind:
description: 'Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'
type: string
metadata:
type: object
spec:
description: Spec defines the desired state of HTTPRoute.
properties:
gateways:
default:
allow: SameNamespace
description: Gateways defines which Gateways can use this Route.
properties:
allow:
default: SameNamespace
description: '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.'
enum:
- All
- FromList
- SameNamespace
type: string
gatewayRefs:
description: 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".
items:
description: GatewayReference identifies a Gateway in a specified namespace.
properties:
name:
description: Name is the name of the referent.
maxLength: 253
minLength: 1
type: string
namespace:
description: Namespace is the namespace of the referent.
maxLength: 253
minLength: 1
type: string
required:
- name
- namespace
type: object
type: array
type: object
hostnames:
description: "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: \n 1. IPs are not allowed. 2. The `:` delimiter is not respected because ports are not allowed. \n Incoming requests are matched against the hostnames before the HTTPRoute rules. If no hostname is specified, traffic is routed based on the HTTPRouteRules. \n 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: \n 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. \n Support: Core"
items:
description: Hostname is used to specify a hostname that should be matched.
maxLength: 253
minLength: 1
type: string
maxItems: 16
type: array
rules:
default:
- matches:
- path:
type: Prefix
value: /
description: Rules are a list of HTTP matchers, filters and actions.
items:
description: HTTPRouteRule defines semantics for matching an HTTP request based on conditions, optionally executing additional processing steps, and forwarding the request to an API object.
properties:
filters:
description: "Filters define the filters that are applied to requests that match this rule. \n The effects of ordering of multiple behaviors are currently unspecified. This can change in the future based on feedback during the alpha stage. \n Conformance-levels at this level are defined based on the type of filter: \n - 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. \n Specifying a core filter multiple times has unspecified or custom conformance. \n Support: Core"
items:
description: '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: - https://github.com/kubernetes-sigs/controller-tools/pull/298 - https://github.com/kubernetes-sigs/controller-tools/issues/461'
properties:
extensionRef:
description: "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. \n Support: Implementation-specific"
properties:
group:
description: Group is the group of the referent.
maxLength: 253
minLength: 1
type: string
kind:
description: Kind is kind of the referent.
maxLength: 253
minLength: 1
type: string
name:
description: Name is the name of the referent.
maxLength: 253
minLength: 1
type: string
required:
- group
- kind
- name
type: object
requestHeaderModifier:
description: "RequestHeaderModifier defines a schema for a filter that modifies request headers. \n Support: Core"
properties:
add:
additionalProperties:
type: string
description: "Add adds the given header (name, value) to the request before the action. It appends to any existing values associated with the header name. \n Input: GET /foo HTTP/1.1 my-header: foo \n Config: add: {\"my-header\": \"bar\"} \n Output: GET /foo HTTP/1.1 my-header: foo my-header: bar \n Support: Extended"
type: object
remove:
description: "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]. \n Input: GET /foo HTTP/1.1 my-header1: foo my-header2: bar my-header3: baz \n Config: remove: [\"my-header1\", \"my-header3\"] \n Output: GET /foo HTTP/1.1 my-header2: bar \n Support: Extended"
items:
type: string
maxItems: 16
type: array
set:
additionalProperties:
type: string
description: "Set overwrites the request with the given header (name, value) before the action. \n Input: GET /foo HTTP/1.1 my-header: foo \n Config: set: {\"my-header\": \"bar\"} \n Output: GET /foo HTTP/1.1 my-header: bar \n Support: Extended"
type: object
type: object
requestMirror:
description: "RequestMirror defines a schema for a filter that mirrors requests. \n Support: Extended"
properties:
backendRef:
description: "BackendRef is a local object reference to mirror matched requests to. If both BackendRef and ServiceName are specified, ServiceName will be given precedence. \n 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. \n Support: Custom"
properties:
group:
description: Group is the group of the referent.
maxLength: 253
minLength: 1
type: string
kind:
description: Kind is kind of the referent.
maxLength: 253
minLength: 1
type: string
name:
description: Name is the name of the referent.
maxLength: 253
minLength: 1
type: string
required:
- group
- kind
- name
type: object
port:
description: "Port specifies the destination port number to use for the backend referenced by the ServiceName or BackendRef field. \n If unspecified, the destination port in the request is used when forwarding to a backendRef or serviceName."
format: int32
maximum: 65535
minimum: 1
type: integer
serviceName:
description: "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. \n 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. \n Support: Core"
maxLength: 253
type: string
type: object
type:
description: "Type identifies the type of filter to apply. As with other API fields, types are classified into three conformance levels: \n - Core: Filter types and their corresponding configuration defined by \"Support: Core\" in this package, e.g. \"RequestHeaderModifier\". All implementations must support core filters. \n - Extended: Filter types and their corresponding configuration defined by \"Support: Extended\" in this package, e.g. \"RequestMirror\". Implementers are encouraged to support extended filters. \n - Custom: Filters that are defined and supported by specific vendors. In the future, filters showing convergence in behavior across multiple implementations will be considered for inclusion in extended or core conformance levels. Filter-specific configuration for such filters is specified using the ExtensionRef field. `Type` should be set to \"ExtensionRef\" for custom filters. \n Implementers are encouraged to define custom implementation types to extend the core API with implementation-specific behavior."
enum:
- RequestHeaderModifier
- RequestMirror
- ExtensionRef
type: string
required:
- type
type: object
maxItems: 16
type: array
forwardTo:
description: 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.
items:
description: HTTPRouteForwardTo defines how a HTTPRoute should forward a request.
properties:
backendRef:
description: "BackendRef is a reference to a backend to forward matched requests to. If both BackendRef and ServiceName are specified, ServiceName will be given precedence. \n 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. \n Support: Custom"
properties:
group:
description: Group is the group of the referent.
maxLength: 253
minLength: 1
type: string
kind:
description: Kind is kind of the referent.
maxLength: 253
minLength: 1
type: string
name:
description: Name is the name of the referent.
maxLength: 253
minLength: 1
type: string
required:
- group
- kind
- name
type: object
filters:
description: "Filters defined at this-level should be executed if and only if the request is being forwarded to the backend defined here. \n Support: Custom (For broader support of filters, use the Filters field in HTTPRouteRule.)"
items:
description: '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: - https://github.com/kubernetes-sigs/controller-tools/pull/298 - https://github.com/kubernetes-sigs/controller-tools/issues/461'
properties:
extensionRef:
description: "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. \n Support: Implementation-specific"
properties:
group:
description: Group is the group of the referent.
maxLength: 253
minLength: 1
type: string
kind:
description: Kind is kind of the referent.
maxLength: 253
minLength: 1
type: string
name:
description: Name is the name of the referent.
maxLength: 253
minLength: 1
type: string
required:
- group
- kind
- name
type: object
requestHeaderModifier:
description: "RequestHeaderModifier defines a schema for a filter that modifies request headers. \n Support: Core"
properties:
add:
additionalProperties:
type: string
description: "Add adds the given header (name, value) to the request before the action. It appends to any existing values associated with the header name. \n Input: GET /foo HTTP/1.1 my-header: foo \n Config: add: {\"my-header\": \"bar\"} \n Output: GET /foo HTTP/1.1 my-header: foo my-header: bar \n Support: Extended"
type: object
remove:
description: "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]. \n Input: GET /foo HTTP/1.1 my-header1: foo my-header2: bar my-header3: baz \n Config: remove: [\"my-header1\", \"my-header3\"] \n Output: GET /foo HTTP/1.1 my-header2: bar \n Support: Extended"
items:
type: string
maxItems: 16
type: array
set:
additionalProperties:
type: string
description: "Set overwrites the request with the given header (name, value) before the action. \n Input: GET /foo HTTP/1.1 my-header: foo \n Config: set: {\"my-header\": \"bar\"} \n Output: GET /foo HTTP/1.1 my-header: bar \n Support: Extended"
type: object
type: object
requestMirror:
description: "RequestMirror defines a schema for a filter that mirrors requests. \n Support: Extended"
properties:
backendRef:
description: "BackendRef is a local object reference to mirror matched requests to. If both BackendRef and ServiceName are specified, ServiceName will be given precedence. \n 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. \n Support: Custom"
properties:
group:
description: Group is the group of the referent.
maxLength: 253
minLength: 1
type: string
kind:
description: Kind is kind of the referent.
maxLength: 253
minLength: 1
type: string
name:
description: Name is the name of the referent.
maxLength: 253
minLength: 1
type: string
required:
- group
- kind
- name
type: object
port:
description: "Port specifies the destination port number to use for the backend referenced by the ServiceName or BackendRef field. \n If unspecified, the destination port in the request is used when forwarding to a backendRef or serviceName."
format: int32
maximum: 65535
minimum: 1
type: integer
serviceName:
description: "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. \n 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. \n Support: Core"
maxLength: 253
type: string
type: object
type:
description: "Type identifies the type of filter to apply. As with other API fields, types are classified into three conformance levels: \n - Core: Filter types and their corresponding configuration defined by \"Support: Core\" in this package, e.g. \"RequestHeaderModifier\". All implementations must support core filters. \n - Extended: Filter types and their corresponding configuration defined by \"Support: Extended\" in this package, e.g. \"RequestMirror\". Implementers are encouraged to support extended filters. \n - Custom: Filters that are defined and supported by specific vendors. In the future, filters showing convergence in behavior across multiple implementations will be considered for inclusion in extended or core conformance levels. Filter-specific configuration for such filters is specified using the ExtensionRef field. `Type` should be set to \"ExtensionRef\" for custom filters. \n Implementers are encouraged to define custom implementation types to extend the core API with implementation-specific behavior."
enum:
- RequestHeaderModifier
- RequestMirror
- ExtensionRef
type: string
required:
- type
type: object
maxItems: 16
type: array
port:
description: "Port specifies the destination port number to use for the backend referenced by the ServiceName or BackendRef field. If unspecified, the destination port in the request is used when forwarding to a backendRef or serviceName. \n Support: Core"
format: int32
maximum: 65535
minimum: 1
type: integer
serviceName:
description: "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. \n 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. \n 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 `networking.x-k8s.io/app-protocol` annotation on the BackendPolicy resource may be used to define the protocol. If the AppProtocol field is available, this annotation should not be used. The AppProtocol field, when populated, takes precedence over the annotation in the BackendPolicy resource. For custom backends, it is encouraged to add a semantically-equivalent field in the Custom Resource Definition. \n Support: Core"
maxLength: 253
type: string
weight:
default: 1
description: "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. \n 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. \n Support: Core"
format: int32
maximum: 1000000
minimum: 0
type: integer
type: object
maxItems: 16
type: array
matches:
default:
- path:
type: Prefix
value: /
description: "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. \n For example, take the following matches configuration: \n ``` matches: - path: value: \"/foo\" headers: values: version: \"2\" - path: value: \"/v2/foo\" ``` \n For a request to match against this rule, a request should satisfy EITHER of the two conditions: \n - path prefixed with `/foo` AND contains the header `version: \"2\"` - path prefix of `/v2/foo` \n See the documentation for HTTPRouteMatch on how to specify multiple match conditions that should be ANDed together. \n If no matches are specified, the default is a prefix path match on \"/\", which has the effect of matching every HTTP request. \n A client request may match multiple HTTP route rules. Matching precedence MUST be determined in order of the following criteria, continuing on ties: \n * 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."
items:
description: "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. \n For example, the match below will match a HTTP request only if its path starts with `/foo` AND it contains the `version: \"1\"` header: \n ``` match: path: value: \"/foo\" headers: values: version: \"1\" ```"
properties:
extensionRef:
description: "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. \n Support: Custom"
properties:
group:
description: Group is the group of the referent.
maxLength: 253
minLength: 1
type: string
kind:
description: Kind is kind of the referent.
maxLength: 253
minLength: 1
type: string
name:
description: Name is the name of the referent.
maxLength: 253
minLength: 1
type: string
required:
- group
- kind
- name
type: object
headers:
description: Headers specifies a HTTP request header matcher.
properties:
type:
default: Exact
description: "Type specifies how to match against the value of the header. \n Support: Core (Exact) \n Support: Custom (RegularExpression, ImplementationSpecific) \n 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. \n HTTP Header name matching MUST be case-insensitive (RFC 2616 - section 4.2)."
enum:
- Exact
- RegularExpression
- ImplementationSpecific
type: string
values:
additionalProperties:
type: string
description: "Values is a map of HTTP Headers to be matched. It MUST contain at least one entry. \n 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. \n Multiple match values are ANDed together, meaning, a request must match all the specified headers to select the route."
type: object
required:
- values
type: object
path:
default:
type: Prefix
value: /
description: Path specifies a HTTP request path matcher. If this field is not specified, a default prefix match on the "/" path is provided.
properties:
type:
default: Prefix
description: "Type specifies how to match against the path Value. \n Support: Core (Exact, Prefix) \n Support: Custom (RegularExpression, ImplementationSpecific) \n 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."
enum:
- Exact
- Prefix
- RegularExpression
- ImplementationSpecific
type: string
value:
description: Value of the HTTP path to match against.
minLength: 1
type: string
required:
- value
type: object
type: object
maxItems: 8
type: array
type: object
maxItems: 16
type: array
tls:
description: "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. \n Collisions can happen if multiple HTTPRoutes define a TLS certificate for the same hostname. In such a case, conflict resolution guiding principles apply, specifically, if hostnames are same and two different certificates are specified then the certificate in the oldest resource wins. \n 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). \n Support: Core"
properties:
certificateRef:
description: "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\"). \n Support: Core (Kubernetes Secrets) \n Support: Implementation-specific (Other resource types)"
properties:
group:
description: Group is the group of the referent.
maxLength: 253
minLength: 1
type: string
kind:
description: Kind is kind of the referent.
maxLength: 253
minLength: 1
type: string
name:
description: Name is the name of the referent.
maxLength: 253
minLength: 1
type: string
required:
- group
- kind
- name
type: object
required:
- certificateRef
type: object
type: object
status:
description: Status defines the current state of HTTPRoute.
properties:
gateways:
description: "Gateways is a list of Gateways that are associated with the route, and the status of the route with respect to each Gateway. When a Gateway selects this route, the controller that manages the Gateway must 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. \n 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. An empty list means the route has not been admitted by any Gateway."
items:
description: RouteGatewayStatus describes the status of a route with respect to an associated Gateway.
properties:
conditions:
description: Conditions describes the status of the route with respect to the Gateway. The "Admitted" condition must always be specified by controllers to indicate 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.
items:
description: "Condition contains details for one aspect of the current state of this API Resource. --- This struct is intended for direct use as an array at the field path .status.conditions. For example, type FooStatus struct{ // Represents the observations of a foo's current state. // Known .status.conditions.type are: \"Available\", \"Progressing\", and \"Degraded\" // +patchMergeKey=type // +patchStrategy=merge // +listType=map // +listMapKey=type Conditions []metav1.Condition `json:\"conditions,omitempty\" patchStrategy:\"merge\" patchMergeKey:\"type\" protobuf:\"bytes,1,rep,name=conditions\"` \n // other fields }"
properties:
lastTransitionTime:
description: lastTransitionTime is the last time the condition transitioned from one status to another. This should be when the underlying condition changed. If that is not known, then using the time when the API field changed is acceptable.
format: date-time
type: string
message:
description: message is a human readable message indicating details about the transition. This may be an empty string.
maxLength: 32768
type: string
observedGeneration:
description: observedGeneration represents the .metadata.generation that the condition was set based upon. For instance, if .metadata.generation is currently 12, but the .status.conditions[x].observedGeneration is 9, the condition is out of date with respect to the current state of the instance.
format: int64
minimum: 0
type: integer
reason:
description: reason contains a programmatic identifier indicating the reason for the condition's last transition. Producers of specific condition types may define expected values and meanings for this field, and whether the values are considered a guaranteed API. The value should be a CamelCase string. This field may not be empty.
maxLength: 1024
minLength: 1
pattern: ^[A-Za-z]([A-Za-z0-9_,:]*[A-Za-z0-9_])?$
type: string
status:
description: status of the condition, one of True, False, Unknown.
enum:
- "True"
- "False"
- Unknown
type: string
type:
description: type of condition in CamelCase or in foo.example.com/CamelCase. --- Many .condition.type values are consistent across resources like Available, but because arbitrary conditions can be useful (see .node.status.conditions), the ability to deconflict is important. The regex it matches is (dns1123SubdomainFmt/)?(qualifiedNameFmt)
maxLength: 316
pattern: ^([a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*/)?(([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9])$
type: string
required:
- lastTransitionTime
- message
- reason
- status
- type
type: object
maxItems: 8
type: array
x-kubernetes-list-map-keys:
- type
x-kubernetes-list-type: map
gatewayRef:
description: GatewayRef is a reference to a Gateway object that is associated with the route.
properties:
name:
description: Name is the name of the referent.
maxLength: 253
minLength: 1
type: string
namespace:
description: Namespace is the namespace of the referent.
maxLength: 253
minLength: 1
type: string
required:
- name
- namespace
type: object
required:
- gatewayRef
type: object
maxItems: 100
type: array
required:
- gateways
type: object
type: object
served: true
storage: true
subresources:
status: {}
status:
acceptedNames:
kind: ""
plural: ""
conditions: []
storedVersions: []---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: gateway-role
rules:
- apiGroups:
- ""
resources:
- services
- endpoints
- secrets
verbs:
- get
- list
- watch
- apiGroups:
- networking.x-k8s.io
resources:
- gatewayclasses
- gateways
- httproutes
verbs:
- get
- list
- watch
- apiGroups:
- networking.x-k8s.io
resources:
- gatewayclasses/status
- gateways/status
- httproutes/status
verbs:
- update
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: gateway-controller
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: gateway-role
subjects:
- kind: ServiceAccount
name: traefik-controller
namespace: defaultThe Kubernetes Gateway API project provides several guides on how to use the APIs. These guides can help you to go further than the example above. The getting started guide details how to install the CRDs from their repository.
Keep in mind that the Traefik Gateway provider only supports the v0.1.0 (v1alpha1).
For now, the Traefik Gateway Provider can be used while following the below guides:
- Simple Gateway
- HTTP routing
- TLS (Partial support: only on listeners with terminate mode)
Resource Configuration¶
When using Kubernetes Gateway API as a provider, Traefik uses Kubernetes Custom Resource Definitions to retrieve its routing configuration.
All concepts can be found in the official API concepts documentation. Traefik implements the following resources:
GatewayClassdefines a set of Gateways that share a common configuration and behaviour.Gatewaydescribes how traffic can be translated to Services within the cluster.HTTPRoutedefine HTTP rules for mapping requests from a Gateway to Kubernetes Services.
Provider Configuration¶
endpoint¶
Optional, Default=""
The Kubernetes server endpoint URL.
When deployed into Kubernetes, Traefik reads the environment variables KUBERNETES_SERVICE_HOST and KUBERNETES_SERVICE_PORT or KUBECONFIG to construct the endpoint.
The access token is looked up in /var/run/secrets/kubernetes.io/serviceaccount/token and the SSL CA certificate in /var/run/secrets/kubernetes.io/serviceaccount/ca.crt.
Both are mounted automatically when deployed inside Kubernetes.
The endpoint may be specified to override the environment variable values inside a cluster.
When the environment variables are not found, Traefik tries to connect to the Kubernetes API server with an external-cluster client.
In this case, the endpoint is required.
Specifically, it may be set to the URL used by kubectl proxy to connect to a Kubernetes cluster using the granted authentication and authorization of the associated kubeconfig.
providers:
kubernetesGateway:
endpoint: "http://localhost:8080"
# ...[providers.kubernetesGateway]
endpoint = "http://localhost:8080"
# ...--providers.kubernetesgateway.endpoint=http://localhost:8080token¶
Optional, Default=""
Bearer token used for the Kubernetes client configuration.
providers:
kubernetesGateway:
token: "mytoken"
# ...[providers.kubernetesGateway]
token = "mytoken"
# ...--providers.kubernetesgateway.token=mytokencertAuthFilePath¶
Optional, Default=""
Path to the certificate authority file. Used for the Kubernetes client configuration.
providers:
kubernetesGateway:
certAuthFilePath: "/my/ca.crt"
# ...[providers.kubernetesGateway]
certAuthFilePath = "/my/ca.crt"
# ...--providers.kubernetesgateway.certauthfilepath=/my/ca.crtnamespaces¶
Optional, Default: []
Array of namespaces to watch.
If left empty, watches all namespaces if the value of namespaces.
providers:
kubernetesGateway:
namespaces:
- "default"
- "production"
# ...[providers.kubernetesGateway]
namespaces = ["default", "production"]
# ...--providers.kubernetesgateway.namespaces=default,productionlabelselector¶
Optional, Default: ""
A label selector can be defined to filter on specific GatewayClass objects only. If left empty, Traefik processes all GatewayClass objects in the configured namespaces.
See label-selectors for details.
providers:
kubernetesGateway:
labelselector: "app=traefik"
# ...[providers.kubernetesGateway]
labelselector = "app=traefik"
# ...--providers.kubernetesgateway.labelselector="app=traefik"throttleDuration¶
Optional, Default: 0
The throttleDuration option defines how often the provider is allowed to handle events from Kubernetes. This prevents
a Kubernetes cluster that updates many times per second from continuously changing your Traefik configuration.
If left empty, the provider does not apply any throttling and does not drop any Kubernetes events.
The value of throttleDuration should be provided in seconds or as a valid duration format,
see time.ParseDuration.
providers:
kubernetesGateway:
throttleDuration: "10s"
# ...[providers.kubernetesGateway]
throttleDuration = "10s"
# ...--providers.kubernetesgateway.throttleDuration=10s