Safest path from 1 to 3 Master nodes

Elastic Stack Elasticsearch
1

We currently have a cluster with 1 master node and 10 data nodes. We're planning to add 2 more masters. I want to avoid split brain when adding the new masters to the cluster. What is the best way to add them in this situation?

2

I recommend reading the below docs if you haven't already :slight_smile:

3

Thanks, I'll check those out.