Kubernetes CKA sample exam question 46 with answer

Question
Restore ETCd database from ~/etcd-backup.db to data directory /var/lib/etc818

Answer
Go to Kubernetes documentation page and grab the command for restore. Adjust it:

sudo ETCDCTL_API=3 etcdctl snapshot restore --data-dir /var/lib/etc818 ~/etcd-backup.db

Verify:

sudo ls /var/lib/etcd*

There is one more step you need to perform. You need to specify the host path in ETCd static pod configuration file. Modify /etc/kubernetes/manifests/etcd.yaml:

volumes:
- hostPath:
    path: /var/lib/etc818
    type: DirectoryOrCreate
  name: etcd-data

Save the changes and wait now. ETCd should be restored.