Hi Christoph, On 16/01/2022 11:27, Christoph via Pdns-users wrote:
I get about 2000 of these log events per day:pdns-recursor[11727]: Error writing TCP answer to 109.70.100.132:31192: Broken pipe109.70.100.132 is the IP address of an dnsdist instance. setup: DoH/DoT clients -> dnsdist -> recursors Is there anything that can be optimized to avoid these errors?
My guess is that the initial client closed its TCP connection with dnsdist, leading dnsdist to close its TCP connection to the recursor as well. 1.7.0 might do a bit better in that regard because it reuses outgoing TCP connections more aggressively when possible, but the real fix might be to lower the severity of that log message in the recursor.
Best regards, -- Remi Gacogne PowerDNS.COM BV - https://www.powerdns.com/
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