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CKA study material · question 739 of 1000

Two IngressClasses in a cluster are both annotated as the default. What is the consequence?

  1. The alphabetically first one is used
  2. The most recently created one wins
  3. The admission controller rejects Ingresses that name no class
  4. Both controllers serve every Ingress
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Answer: C. The admission controller rejects Ingresses that name no class

With more than one default IngressClass the admission controller refuses to create an Ingress that leaves ingressClassName unset; at most one class may be marked default.

Source: Ingress (Kubernetes) — Ingress class › Default IngressClass

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