Chronos allows to manipulate raw Prometheus TSDB data.
Warning: software quality leaves much to be desired!
Chronos allows :
read Prometheus TSDB Data
export Prometheus TSDB data directory to human-readable JSON files
change the timestamps (to the past) of Prometheus TSDB data and create new Prometheus TDSB
copy the Prometheus TSDB data to fill a bigger timewindows (for proper performance testing of Prometheus)
Flags:
-exportTSDB Boolean - Only import the Prometheus TDSB Data
-importDir String - Import directory for Prometheus TSDB data
-outputDir String - Output directory for Prometheus TSDB data
-jsonOutput Boolean - Output the TSDB data as JSON files
-jsonOutputDir String - Output directory for JSON files
-redateStart UnixTimestamp for the starting date of the copied prometheus data
-redateEnd Unix timestamp for the ending data of the copied prometheus data