This is kind of a noob question so please be kind.
I have an elasticsearch cluster (v5) with 3 nodes and two indexes, lets say indexes X and Y(default). I would like to know if there is a way to write data to the index X and automatically write data to index Y. Is there something built in to ES, for doinf so?
I have read about ES mappings, however I am not sure I understand the concept and if this is the way to go.
I have read about watches and triggers, but I think they are only available in paid versions.