[anti-censorship-alerts] [FIRING:1] Snowflake probetest failures

[Cecylia Bocovich]

For what it's worth, this doesn't look like an issue with the NAT probe 
test. I've attached a graph of the snowflake polling metrics for the 
last few hours. When the probe test fails, we see a very gradual drop in 
the number of known NAT types and a rise in unknown NAT types. Here, we 
see a sudden drop in restricted NAT types but no corresponding rise in 
unknowns. This may indicate an issue with proxies, or an issue with the 
broker reporting these metrics, or it could be some natural periodic 
behaviour.

On 2022-02-26 15:00, alertmanager at hetzner-nbg1-02.torproject.org wrote:
>
> Total firing alerts: 1
> Total resolved alerts: 0
>
>
> ## Firing Alerts
>
> -----
> Time: 2022-02-26 20:00:00.286335746 +0000 UTC
> Summary:  There is a problem testing the type of NAT of our proxies
> Description:  There are only 1.8 times proxies with known NAT type than with unknown
>
> -----
>
>
>
> ##Resolved Alerts
>
>
>
>
>
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