etcd is strongly consistent, it will only be available if you have a majority of nodes up and reaching each other (CP over AP). If you don't have a majority it

etcd is strongly consistent, it will only be available if you have a majority of nodes up and reaching each other (CP over AP). If you don't have a majority it will not be available (but won't get inconsistent). This is more resilient than SQLite of course, which runs on a single node, and therefore can't remain available if any node (= the only node) fails.