How do you rejoin the cluster?

Couchbase Server
1

Say you have node 1 and node 2 in the cluster, if you remove node 2 (instead of failover) from the cluster is that possible to let add it back to the cluster without losing the data?

2

See Remove a Node and Rebalance | Couchbase Docs and then Add a Node and Rebalance | Couchbase Docs