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A team wants to expose a PostgreSQL database to clients outside the cluster. Why is an Ingress the wrong tool?

  1. Ingress requires the backend to be a StatefulSet
  2. Ingress cannot address a Service in another namespace
  3. Ingress does not support session affinity
  4. Ingress carries HTTP and HTTPS only
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Answer: D. Ingress carries HTTP and HTTPS only

An Ingress exposes no arbitrary ports or protocols; a non-HTTP service reaches the outside world through a NodePort or LoadBalancer Service instead.

Source: Ingress (Kubernetes) — What is Ingress?

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