Key-Value Store — Certified Kubernetes Administrator (CKA) Practice Questions

etcd is the distributed key-value store that serves as Kubernetes' primary data store, holding all cluster state including node information, workload definitions, secrets, and configuration. The CKA exam tests your ability to manage etcd directly, including taking and restoring snapshots for disaster recovery. Understanding how etcd fits into the control plane architecture, and knowing the etcdctl commands for backup and restore, is essential because a failed etcd restore is one of the most common cluster-recovery scenarios examiners test.

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