Node Sizing per role

Are there general guidelines on CPU/RAM/HDD sizing for the cluster and considerations for moving from those?

Is 2 CPUs/4GB RAM and 100GB storage good for a managing node? what about a coordinating node? etc…

Any thoughts would be appreciated…

Here are some best practices about how to size OpenSearch cluster, take a look:https://docs.aws.amazon.com/opensearch-service/latest/developerguide/sizing-domains.html.

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