Indice Replica Configuration

Hello community

I notice that ES 5 does not allow to configure the number of replicas from its configuration file anymore, so before I enable filebeat/metricbeat clients, which would be the procedure? Created the indices manually( filebeat and metricbeat ) , edit the replica configuration and then enable it?

Im using a one node configuration so Im not interested in having replicas configured my aim is to reduce the disk space usage.

Thanks
Regardss

Use an index template to specify this.

Thanks!