I want to mimic down sampling feature by federation.
Here’s how I planned it.
run two prometheus instance with distinct retention. Instance A is for collecting raw data and instance B is for collecting down sampling data.
A collects metrics every 5 seconds. B collects metrics every 30 seconds via federation.
It works well. However, a separate graph from the raw data is required for down sampling data.
I’d like to draw a graph by taking the old data from B and the latest data from A. Is this possible?