https://www.elastic.co/docs/reference/elasticsearch/configuration-reference/cluster-level-shard-allocation-routing-settings
Cluster-level shard allocation and routing settings | Elasticsearch Reference
Shard allocation is the process of assigning shard copies to nodes. This can happen during initial recovery, replica allocation, rebalancing, when nodes...
shard allocationclusterlevelroutingsettings
https://www.elastic.co/guide/en/elasticsearch/reference/8.19/shard-allocation-filtering.html
Index-level shard allocation filtering | Elasticsearch Guide [8.19] | Elastic
shard allocation8 19indexlevelfiltering
https://www.elastic.co/guide/en/elasticsearch/reference/7.6/shards-allocation.html
Cluster level shard allocation | Elasticsearch Guide [7.6] | Elastic
shard allocation7 6clusterlevelelasticsearch