etcd is the key-value store for OKD, which persists the state of all
Back up your cluster’s etcd data regularly and store in a secure location
ideally outside the OKD environment. Do not take an etcd backup
before the first certificate rotation completes, which occurs 24 hours after
installation, otherwise the backup will contain expired certificates. It is also
recommended to take etcd backups during non-peak usage hours, as it is a
You back up your cluster’s etcd data by performing a single invocation of the backup script on a master host. Do not take a backup for each master host.