Q:

How long elasticsearch stores indexes?

How can I find out how long elasticsearch stores indexes? 
For what period from which date to now.
It's in config elasticsearch.yml? or I need something else?
edit
No, I don't want delete indicies, I want to know, from which date I have indicies.

A:

Use Cerebro (formerly Kopf) or the management view in Kibana (DevTools) for manual operations and peeking around.
An index is deleted or rebuild with REST commands. So only on demand. This is typically scripted to delete by time filters. For example curator can do that.

