Gateway object
A Kubernetes Gateway API Gateway is a resource that defines a network entry point and specifies its implementation class, listeners, and traffic protocols or ports.
Kubernetes in Action, Second Edition
A Gateway is a Kubernetes Gateway API resource that represents a network entry point, specifying its implementation class, listeners, and optional addresses for routing traffic.
- How it is used
- Defines a network entry point where external traffic is accepted before separate Route objects direct it to services.
- How deep it goes
- Works through a manifest, controller-created resources, status checks, TLS configuration, and namespace permissions without detailing proxy internals.
- Examples
- Shows an Istio-class HTTP Gateway, kubectl status output, an HTTPS listener using a Secret, and a shared cross-namespace Gateway.
- What you can do after
- Operate/configure it by creating listeners, attaching routes, checking assigned addresses and conditions, and controlling cross-namespace access.
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Acing the Certified Kubernetes Administrator Exam, Second Edition
A Gateway is a namespace-scoped Gateway API resource that defines listeners and the protocols, ports, and gateway class used for traffic entry.
- How it is used
- Separates operational traffic-entry configuration from infrastructure provisioning and application-level routing.
- How deep it goes
- Defines Gateway scope, listeners, protocols, ports, and responsibilities, but defers controller installation and implementation internals.
- Examples
- Uses an example HTTP listener on port 80 and an HTTPRoute that matches a hostname and path.
- What you can do after
- Operate/configure a Gateway and verify its creation before attaching application routes.
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Related concepts
- gateway apipart of · The Kubernetes Gateway API is a networking standard for defining gateways, listeners, and traffic routing between external clients and cluster services.
- HTTPRouteused by · An HTTPRoute is a Kubernetes Gateway API resource defining how HTTP requests are matched and forwarded to backend services through parent gateways.
- passthroughconfigures · Passthrough is a gateway TLS mode that forwards encrypted TLS traffic without terminating the TLS session.
- network listeneruses · A network listener is a configured component or endpoint that binds to a network address and protocol, accepts incoming traffic, and may forward it for processing.
- gatewayclassconfigures · A GatewayClass is a cluster-scoped Kubernetes Gateway API resource defining a class of gateways managed by a particular controller.
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