The city still runs ingress-nginx for legacy portals. What is the purpose of an Ingress resource in that model?
Select an answer to reveal the explanation.
Short Explanation
An Ingress object is the routing wishlist—hosts, paths, backends—while the Ingress controller is the worker that makes those rules real. By itself, the Ingress YAML is just instructions for that controller.
Full Explanation
Ingress resources define HTTP (and related) routing rules mapping hosts and paths to Services. An Ingress controller watches those objects and configures its data plane accordingly. Ingress does not provision PVs, replace apiserver auth, or schedule CoreDNS.