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What is the default DNS service name used by CoreDNS in a Kubernetes cluster?

easy📝 Conceptual Q1 of 15
Kubernetes - Networking
What is the default DNS service name used by CoreDNS in a Kubernetes cluster?
Akube-dns
Bcoredns
Cdns-service
Dkubernetes-dns
Step-by-Step Solution
Solution:

  1. Step 1: Understand CoreDNS default service naming

    CoreDNS runs as a service named coredns by default in Kubernetes clusters.

  2. Step 2: Confirm the default DNS service name

    The service coredns is the standard DNS service name that CoreDNS uses to provide DNS resolution.

  3. Final Answer:

    coredns -> Option B

  4. Quick Check:

    Default DNS service name = coredns [OK]
Quick Trick: CoreDNS service is named coredns by default [OK]
Common Mistakes:
  • Confusing CoreDNS service name with the pod name
  • Assuming the service is named kube-dns
  • Thinking the service is named kubernetes-dns

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