Currently i have a 3 node cluster with all being master eligible , below is may configuration in my yaml.
All 3 nodes with default 5 shards and 2 replica's for each shard.
node.data : true
If I wanted to scale in future to have more nodes and want to
Have dedicated master's ,How do I change it.Is it as simple as changing the exiting 3 nodes configuration to Master only and rest of them to the data nodes ?