Tuning Of ElasticSearch Cluster – DEVOPS DONE RIGHT
elasticsearch - When using the index settings with auto_expand_replicas set to "0-all," an issue arises where primary shards are concentrated on specific nodes - Stack Overflow
Get Started with Amazon Elasticsearch Service: How Many Shards Do I Need? | AWS Database Blog
index.auto_expand_replicas and shard allocation settings don't play well together · Issue #2869 · elastic/elasticsearch · GitHub
Elasticsearch high availability is not working as expected in MDM 10.4 with 3 node cluster
Reducing Shard Usage
Demystifying Elasticsearch shard allocation | AWS Open Source Blog