Increasing Prometheus storage retention

Question

Hi I have Prometheus server installed on my AWS instance but the data is been removed automatically after 15 days. I need to have data for an year or months, is there anything I

Answer 1

There's the --storage.tsdb.retention.time flag that you can set when you start Prometheus. It defines how long data is kept in the time-series database (TSDB). The default is 15 days.

So, to increase the retention time to a year, you should be able to set this to something like:

--storage.tsdb.retention.time=1y
# or
--storage.tsdb.retention.time=365d

See the Prometheus documentation.