Index lifecycle management settingsedit
These index-level ILM settings are typically configured through index
templates. For more information, see Setting up a policyedit.
The name of the policy to use to manage the index.
The index alias to update when the index rolls over. Specify when using a
policy that contains a rollover action. When the index rolls over, the alias is
updated to reflect that the index is no longer the write index. For more
information about rollover, see Using policies to manage index rollover.