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CKA study material · question 354 of 1000

A Deployment using hostPort cannot schedule beyond a handful of replicas. Why?

  1. hostPort conflicts with the Pod network CIDR
  2. hostPort requires a NodePort Service
  3. hostPort limits it to as many Pods as there are nodes
  4. hostPort Pods must run on control-plane nodes
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Answer: C. hostPort limits it to as many Pods as there are nodes

Binding to a hostPort means only one such Pod per node, so replicas are capped by the node count.

Source: Debug Pods (Kubernetes) — My pod stays pending

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