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CKA study material · question 79 of 1000

Which two topologies does kubeadm document for a highly available control plane? Choose two.

  1. Control-plane nodes sharing one etcd data directory
  2. An external etcd cluster on separate machines
  3. Stacked control-plane nodes, with etcd members co-located
  4. A single control-plane node with a hot standby
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Answer: C. Stacked control-plane nodes, with etcd members co-located
B. An external etcd cluster on separate machines

kubeadm documents stacked etcd, which needs less infrastructure, and external etcd, which separates the database.

Source: Creating Highly Available Clusters with kubeadm (Kubernetes) — Creating Highly Available Clusters with kubeadm

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