[EDevil]

Isn’t it a problem to have etcd store its state on a non persistent volume?

How do they recover it after a restart? I suppose it's not a manual process.

[justingood]

The replacement machine will start pulling its data from the remaining nodes when it joins the cluster. However, it's recommended to migrate the failed node's data first if it's greater than 50MB: https://github.com/coreos/etcd/blob/master/Documentation/op-...