elasticsearch - Elastic search coordinating-node -


we new elasticsearch , beginning set-up coordination node our ui client query index. didn't understand difference between master node , coordination node. coordination has scaled separately based in site traffic? other nodes share load?

the master node responsible managing cluster topology. neither indexes data nor participates in search tasks.

the data nodes real work horses of es cluster , responsible indexing data , running searches/aggregations.

coordinating nodes (formerly called "client nodes") kind of load balancers within es cluster. optional , if don't have coordinating nodes, data nodes coordinating nodes. don't index data main job distribute search tasks relevant data nodes (which know find master node) , gather results before aggregating them , returning them client application.

so depending on cluster size, amount of data , sla requirements, might need spawn 1 or more coordinating nodes in order serve clients. without real numbers, hard advise @ point, above describes how each kind of node works.

if you're beginning , don't have data, don't need dedicated coordinating node, simple data node fine.


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