We have a cluster that will contain a mix of hosts, some with spinning disks and some with SSDs. We would like to index only to the hosts with spinning disks, and serve queries only from the hosts with SSDs. How can we force primary shards to only be on the hosts with spinning disks, and replica s…

Can you force primary shards to only be on certain nodes, and replica shards on other nodes?

warkolm (Mark Walkom) January 15, 2018, 2:04am 2

You cannot do that because Elasticsearch doesn't differentiate between the two when it comes to allocation.

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