Our former cluster ES was made of 40 data nodes.
- 4 of them were coordinators as well
- 3 of them were electable as a master (for one node, it gathers data, coordinator and master-electable role)
We aim to create a new cluster (with 40 nodes as well) and I was wondering if it is recommanded to dedicate to a node, a specific role (ie. a coordinating node does not contain data node, etc.) ?
For example, does a node being both data and coordinator is an anti-pattern ?
Indeed, on a same node, I presume that a coordinator that falls can impact the data node part ?