how to do xtrabackup with node failover?

What is the best way to run xtrabackup with node failover?
Let’s say backup is happening via node-1 and it fails and we want it to continue from node-2.


Following up. Also wondering if there is a way to do time based restores with read-only slave node. Unless I am missing something it doesn’t seem like there would be. For example we want to restore DB snapshot from 3 days ago etc.