Hi, I have an Elasticsearch cluster setup with 3 nodes. 2 of them are Master and Data nodes with one of them being a Data only node. I had a situation where the Data only node had twice the amount of shards allocated to it than the 2 Master nodes. It looked like all the replica shards from the Mas…

Ok that explains it. You have allocation awareness enabled which means Elasticsearch is trying to balance the shards of each index evenly across the zones. Since the two master nodes are in the same zone they get roughly a quarter of the shards each. Move one to eu-west-1a, or disable allocation awa…

Elasticsearch cluster shards allocation not even

Elastic Stack Elasticsearch

system (system) Closed April 3, 2019, 12:40pm 9

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Elasticsearch cluster shards allocation not even

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