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DevOps & Automation · Intermediate

Ingress Controller

A component running in the cluster that implements Ingress rules by configuring a reverse proxy or cloud load balancer.

Definition

Controllers watch Ingress objects selected by ingressClassName. The community ingress-nginx project was retired in March 2026 (announced November 2025), pushing users toward Gateway API implementations.

Example

ingressClassName: nginx selects the NGINX controller.

Exam tip

Multiple controllers are distinguished by IngressClass.

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