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- In Elasticsearch 6.x, Fortinet has observed that Elasticsearch CLI performance degrades when the total number of shards in the cluster (including Hot and Warm nodes) is more than 15K. Newer versions may have a higher upper limit.
Dedicated master nodes in Amazon OpenSearch Service
https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-dedicatedmasternodes.html
Instance count | Master node RAM size | Maximum supported shard count | Recommended minimum dedicated master instance type |
|---|---|---|---|
1–10 | 8 GiB | 10K | m5.large.search or m6g.large.search |
11–30 | 16 GiB | 30K | c5.2xlarge.search or c6g.2xlarge.search |
| 31–75 | 32 GiB | 40K | r5.xlarge.search or r6g.xlarge.search |
| 76 – 125 | 64 GiB | 75K | r5.2xlarge.search or r6g.2xlarge.search |
126 – 200 | 128 GiB | 75K | r5.4xlarge.search or r6g.4xlarge.search |
Best Practice in AWS, Elasticsearch
https://www.elastic.co/guide/en/elasticsearch/plugins/current/cloud-aws-best-practices.html
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