How can I plot “projected” values (values in the future) to a time-series graph?
e.g.: I am plotting disk utilization from prometheus via:
100 * (wmi_logical_disk_free_bytes{}/wmi_logical_disk_size_bytes)
and trying to figure out how to plot “projected future utilization” using:
rate() looking back across the last 15 days
or
predict_linear(wmi_logical_disk_free_bytes[15d], 90 * 24 * 3600)