These alerts are false positives triggered by another problem. The number of proxies with unknown NAT type has not risen, there has been a steady decline in the poll rate of snowflake proxies. I believe this is a side effect of the sky-rocketing client polls that fail to connect[0]. [0] https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf... On 2025-06-16 10:49, alertmanager--- via anti-censorship-alerts wrote:
[FIRING:1] Snowflake probetest failures (hetzner-nbg1-02.torproject.org critical anti-censorship)
1 alert for alertname=Snowflake probetest failures View in Alertmanager <http://hetzner-nbg1-02:9093/#/alerts?receiver=anti-censorship+team> *[1] Firing* *Labels* alertname = Snowflake probetest failures monitor = hetzner-nbg1-02.torproject.org severity = critical team = anti-censorship *Annotations* description = There are only 1.9 times proxies with known NAT type than with unknown playbook = TODO summary = There is a problem testing the type of NAT of our proxies title = Snowflake probetest failures Source <https://prometheus2.torproject.org/graph?g0.expr=sum%28snowflake_available_proxies%7Bnat%21%3D%22unknown%22%7D%29+%2F+sum%28snowflake_available_proxies%7Bnat%3D%22unknown%22%7D%29+%3C+2&g0.tab=1>
Sent by Alertmanager <http://hetzner-nbg1-02:9093>
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