Note: I am not using date in index name like index -yyyy-mm .
any method to do this i am using python Elasticsearch client to store data in es database.
The only bilt-in way to manage retention of data in Elasticsearch is ILM, and this relies on time-based indices (by name as you outlined or rollover) being used.
If you have a single index you need to delete data using delete-by-query and you need to periodically schedule these operations yourself.
in my Elasticsearch index one data is date/time and timestamp . So how to do query and delete data older than X days?
Use the delete by query API with a date range filter.
I want to automate this task using pyhton script. how to do it?
Look at the links I provided and write a Python script that periodically uses that API, e.g. by triggering it via cron.
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