[anti-censorship-alerts] [FIRING:3] rejected by ratio

[meskio]

Quoting alertmanager at 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


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