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Resources Requiring Setting Ingress Class and How to Set them

Ingress Class

Ingress class in Kubernetes allows Ingress definitions to be processed by different controllers. Kong Ingress Controller manages ingresses with an Ingress class of kong.

kong is the default value and can be changed using the --ingress-class CLI flag, or CONTROLLER_INGRESS_CLASS environment variable.

Gateway Class

Kong Ingress Controller reconciles any resources attached to a GatewayClass that has a spec.controllerName of konghq.com/kic-gateway-controller. Gateway API resources are attached to a Gateway object using the spec.parentRefs field, and the Gateway references a GatewayClass using the spec.gatewayClassName field.

konghq.com/kic-gateway-controller is the default value and can be changed using the --gateway-api-controller-name CLI flag, or CONTROLLER_GATEWAY_API_CONTROLLER_NAME environment variable.

Resources that require Ingress Class or Gateway Class

The following resources require an Ingress Class or Gateway Class to be defined. Any resources that are attached to a resource containing an Ingress Class or Gateway Class that Kong Ingress Controller reconciles will be automatically included in reconciliation.

Resource Kind	Resource Group and Version	Method to set Ingress Class
`Ingress`	`networking.k8s.io/v1`	Set in `spec.ingressClassName` or
		set in annotation `kubernetes.io/ingress.class`
`Gateway`	`gateway.networking.k8s.io/v1`	Set in `spec.gatewayClassName`
`KongClusterPlugin`	`configuration.konghq.com/v1`	Set in annotation `kubernetes.io/ingress.class`
`KongConsumer`	`configuration.konghq.com/v1`	Set in annotation `kubernetes.io/ingress.class`
`KongConsumerGroup`	`configuration.konghq.com/v1beta1`	Set in annotation `kubernetes.io/ingress.class`
`TCPIngress`	`configuration.konghq.com/v1beta1`	Set in annotation `kubernetes.io/ingress.class`
`UDPIngress`	`configuration.konghq.com/v1beta1`	Set in annotation `kubernetes.io/ingress.class`

Note: If the IngressClass used by Kong Ingress Controller (specified in flag --ingress-class) has ingressclass.kubernetes.io/is-default-class set to true, all resources that do not have an explicit Ingress Class set are also reconciled by Kong Ingress Controller. This does not include Gateway API resources.