Replication among multiple servers in Couchbase Community Edition

Can i use 2 Node Server and 1 Sync server in Couchbase Community Edition?

When i try to use like this without num_index_replicas Syncgateway trying to fail to create an index.

GSI CreateIndex() - cause: Index Replica not supported in non-Enterprise Edition.

So we always use One Node Server and One Syncgateway Server for Community Edition?

You can use multi-node, but index replicas are an EE only feature on Couchbase Server, so you will have to set num_index_replicas: 0.

So Then we need to create indexes manually in every node?

No, the indexes will be created by Sync Gateway on the cluster as a whole, but you won’t have any replicas for automatic HA/load balancing.