How to auth Prometheus in Thanos

[ghost]

My Prometheus instance has enable basic-auth: https://prometheus.io/docs/guides/basic-auth/

when I run Thanos sidecar:

thanos sidecar --tsdb.path /home/prometheus/data/ --prometheus.url "http://localhost:9090"

get log:

level=warn ts=2021-09-17T08:56:33.579018157Z caller=sidecar.go:159 msg="failed to fetch prometheus version. Is Prometheus running? Retrying" err="expected 2xx response, got 401. Body: Unauthorized\n"

I looked up the flags in thanos sidecar -h but the flag related to prometheus auth could not be found. How should I configure Thanos?

[Namanl2001]

This feature is not present in thanos yet, however we have a WIP PR for it.
Related issue: #3975
WIP PR: #4612

[yeya24]

Closed by #4612