问题
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 need to change in my prometheus configuration? Or do I need any extensions like Thanos, I am new to Prometheus so please be easy on the answers
回答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=12m
See the Prometheus documentation.
来源：https://stackoverflow.com/questions/59298811/increasing-prometheus-storage-retention