Index lifecycle actions

Move shards to nodes with different performance characteristics and reduce the number of replicas.
Permanently remove the index.
Force merge
Reduce the number of index segments and purge deleted documents. Makes the index read-only.
Freeze the index to minimize its memory footprint.
Read only
Block write operations to the index.
Remove the index as the write index for the rollover alias and start indexing to a new index.
Set Priority
Lower the priority of an index as it moves through the lifecycle to ensure that hot indices are recovered first.
Reduce the number of primary shards by shrinking the index into a new index.
Convert a follower index to a regular index. Performed automatically before a rollover, shrink, or searchable snapshot action.
Wait for snapshot
Ensure that a snapshot exists before deleting the index.