This is a command-line tool for offline migration of Prometheus 1.x "local storage" databases to the new TSDB format of Prometheus 2.0 (which is not released yet).

Warning: This is still in the very early stages, so please do not use it for anything important yet!

Install Go and then go get the package:

go get github.com/xperimental/tsdb-migrate

As this is pre-release software no binaries are provided yet.

Usage of tsdb-migrate:
  -i, --input string         Directory of local storage to convert.
  -o, --output string        Directory for new TSDB database.
  -r, --retention duration   Retention time of new database. (default 360h0m0s)
  -s, --start-time string    Starting time for conversion process. (default "2016-07-18T14:37:00Z")
      --step-time duration   Time slice to use for copying values. (default 24h0m0s)

• The retention time should match the one on the old storage.
• Long step times (such as the default) probably only work if you do not have a lot of series (still not tested on a large database).