How to upload the existing data of promethues Using sidecar?

[denniceritchie]

I have one month of existing prometheus data, where I am planning to install sidecar. Does it uploads the full old data?

[yeya24]

      --shipper.upload-compacted
                                 If true shipper will try to upload compacted blocks as well. Useful for migration
                                 purposes. Works only if compaction is disabled on Prometheus. Do it once and then
                                 disable the flag when done.

You can add this flag to your sidecar so that it will upload all old compacted blocks to object storage. It is an one-off operation so do remember to disable it after it is done.