Quoting alertmanager@hetzner-nbg1-02.torproject.org (2023-03-28 18:21:45)
----- Time: 2023-03-28 16:21:14.934296434 +0000 UTC Summary: Too many obfs4 bridges are rejected Description: The percent of rejected obfs4 bridges by their bandwidth ratio is 7.0%.
Time: 2023-03-28 16:21:14.934296434 +0000 UTC Summary: Too many tblink bridges are rejected Description: The percent of rejected tblink bridges by their bandwidth ratio is 0.0%.
Time: 2023-03-28 16:21:14.934296434 +0000 UTC Summary: Too many vanilla bridges are rejected Description: The percent of rejected vanilla bridges by their bandwidth ratio is 9.7%.
Ups, I think I have missconfigured this alert. The plan was to alert if the rejection is > 20%, but it looks like I confuse '>' with '<'.
The mr fixing it: https://gitlab.torproject.org/tpo/tpa/prometheus-alerts/-/merge_requests/30