IngressClass

IngressClass represents the class of the Ingress, referenced by the Ingress Spec. The ingressclass.kubernetes.io/is-default-class annotation can be used to indicate that an IngressClass should be considered default. When a single IngressClass resource has this annotation set to true, new Ingress resources without a class specified will be assigned this default class.

Concept documentation for IngressClass

Ingress

Make your HTTP (or HTTPS) network service available using a protocol-aware configuration mechanism, that understands web concepts like URIs, hostnames, paths, and more. The Ingress concept lets you map traffic to different backends based on rules you define via the Kubernetes API.

apiVersion: networking.k8s.io/v1

import "k8s.io/api/networking/v1"

IngressClass

Field	Description
`apiVersion` string	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
`kind` string	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
`metadata` ObjectMeta	Standard object's metadata. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
`spec` IngressClassSpec	spec is the desired state of the IngressClass. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

IngressClassSpec

IngressClassSpec provides information about the class of an Ingress.

Field	Description
`controller` string	controller refers to the name of the controller that should handle this class. This allows for different "flavors" that are controlled by the same controller. For example, you may have different parameters for the same implementing controller. This should be specified as a domain-prefixed path no more than 250 characters in length, e.g. "acme.io/ingress-controller". This field is immutable.
`parameters` IngressClassParametersReference	parameters is a link to a custom resource containing additional configuration for the controller. This is optional if the controller does not require extra parameters.

IngressClassList

IngressClassList is a collection of IngressClasses.

Field	Description
`apiVersion` string	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
`items` * IngressClass array	items is the list of IngressClasses.
`kind` string	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
`metadata` ListMeta	Standard list metadata.

IngressClassParametersReference

IngressClassParametersReference identifies an API object. This can be used to specify a cluster or namespace-scoped resource.

Field	Description
`apiGroup` string	apiGroup is the group for the resource being referenced. If APIGroup is not specified, the specified Kind must be in the core API group. For any other third-party types, APIGroup is required.
`kind` * string	kind is the type of resource being referenced.
`name` * string	name is the name of resource being referenced.
`namespace` string	namespace is the namespace of the resource being referenced. This field is required when scope is set to "Namespace" and must be unset when scope is set to "Cluster".
`scope` string	scope represents if this refers to a cluster or namespace scoped resource. This may be set to "Cluster" (default) or "Namespace".

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https://kubernetes.io/docs/reference/kubernetes-api/networking/ingress-class-v1/