How to prioritize data node to store primary shards

Elastic Stack Elasticsearch
#1

Hi

We have a two node cluster and I would like to prioritize one data node to store all the primary shards. I would like to store all the primary shards on the node with more performance. Is this possible?

Thank you in advance and kind regards, Stefan

#2

Primary and replica shards do the same amount of work when it comes to indexing and searching so there is generally no point trying to allocated primaries to a specific node. Elasticsearch will promote replicas to primary due to events in the cluster, so these designations are not static.

#3

You can't, for the reasons Christian mentioned.

#4

Thank you very much for the fast and clarifying answer. Best regards, Stefan

#5