Lesson in CKA Mock Exam
Question 12: etcd Version and Snapshot
Check the etcd version and take a snapshot of etcd's data directly on the control-plane node.
You have been tasked to perform the following etcd operations:
- Run
etcd --versionand store the output at/opt/course/7/etcd-version - Make a snapshot of etcd and save it at
/opt/course/7/etcd-snapshot.db
Hint 1
etcdctl snapshot save needs to reach etcd's client port and authenticate with TLS certificates. You don't need to guess the certificate paths — the running etcd static Pod's own manifest on this node spells out exactly which cert/key/CA files it was started with.
Hint 2
Older etcd docs mention setting ETCDCTL_API=3 before every command — on this etcdctl version that's already the only API available, so it's a no-op if you set it, and not required if you don't.
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- Question 2: Kubeconfig Extraction