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CKA study material · question 566 of 1000

In an external etcd topology, which statement describes the communication pattern?

  1. Each etcd host talks to the API server on every control plane node
  2. Each etcd member talks only to the API server colocated with it
  3. The API servers reach etcd through the control plane endpoint load balancer
  4. Only the leading API server connects to etcd; the others proxy through it
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Answer: A. Each etcd host talks to the API server on every control plane node

The stacked layout pairs each etcd member with the API server on the same node; in the external layout the etcd hosts serve all of the control plane nodes.

Source: Options for Highly Available Topology (Kubernetes) — External etcd topology

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