Salut, Elastic Fulks
My production cluster is set up as follows:
- 1 master node
- two data nodes [data]
- 1 coordinator
I want to convert the 2 data nodes to
- first one to [data_content,data_hot].
- second one to [data_warm]
How to convert the 2 data nodes carefully.
Assuming you have replicated all data, it should be pretty similar to a rolling upgrade — just instead of upgrading a node you would reconfigure
node.roles and then restart it: Upgrade Elasticsearch | Elastic Installation and Upgrade Guide [8.8] | Elastic
Though I'm not sure I fully get what you are trying to do there: Are you sure you want to have a single node per data tier (and no replication of the data)?
This all feels over-specialized for this cluster size (including having a coordinating node with only 2 data nodes).
PS: And I hope you have 3 master-eligible nodes to keep that cluster highly available.
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