Is it possible to dynamically add as many replicas to my cluster as I want?
My setup is: 1 index with 1 shard and 1 replica, and in case of high load I want to add more replicas to handle more requests. I don't know ahead how many replicas I will need.
For now I only see that I can define number of replicas when I create the index. I can also increase number of replicas using REST API, but I want to have it fully automatic, I can't have any steps before starting up a new server (I'm using Amazon's Autoscaling mechanism of EC2).