Implement and Configure a Highly-Available Control Plane CKA Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   Which command is used to check the health of the etcd cluster members?

   • Aetcdctl endpoint health
   • Betcdctl member list
   • Cetcdctl cluster-status
   • Detcdctl status
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2. 12expert · hard

   You have a three-member external etcd cluster. One of the etcd members has failed and cannot be recovered. You need to restore the cluster to a healthy state with three members. You have a recent snapshot of the etcd data. What is the correct procedure to restore the cluster?

   • ARemove the failed member from the cluster, restore the snapshot on a new member, and add it to the cluster.
   • BStart a new member with the same initial-cluster configuration as the original cluster.
   • CRestore the snapshot on the two healthy members and start a new member with the same snapshot.
   • DRestore the snapshot on the failed member's disk and restart it.
   Reveal Solution Discussion Select an answer first
4. 13foundation · easy

   Which component typically sits in front of the API servers and forwards traffic to them on port 6443?

   • AA load balancer (e.g., HAProxy, NGINX, or cloud LB)
   • Betcd
   • Ckube-proxy
   • Dkubelet
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5. 14application · medium

   You have a highly-available control plane with three API server instances and an external etcd cluster. You suspect that one of the etcd members is unhealthy. Which command should you run to check the health of the etcd cluster?

   • Asystemctl status etcd on each control plane node.
   • Betcdctl endpoint health --cluster with the appropriate endpoints and certificates.
   • Ckubectl get --raw='/healthz' on the API server.
   • Dkubectl get componentstatuses to check etcd health.
   Reveal Solution Discussion Select an answer first
6. 15application · medium

   You are configuring a three-member external etcd cluster for a Kubernetes control plane. Each etcd member is on a separate node, and you have generated TLS certificates for peer and client communication. After starting the first member with its initial-cluster configuration, you need to add the second and third members. Which approach correctly adds the new members?

   • AUse etcdctl member add for each new member, then start them with the updated initial-cluster state that includes all three members.
   • BStart the second and third members with only their own name and peer URL in the initial-cluster state, and they will discover each other automatically.
   • CStart the second and third members with the same initial-cluster state as the first member, listing all three members.
   • DRestart the first member with the --initial-cluster-state=existing flag, then start the second and third members with the full three-member list.
   Reveal Solution Discussion Select an answer first