Tips for debugging intermittent 502s with Daphne

[Keith Hackbarth]

Hey all, 

Was hoping to get some advice about how to debug intermittent 502 using Daphne

• I observe connection error in the NGIX logs (where I"m using proxy_pass) Connection refused) while connecting to upstream
• I observe in NGIX logs that it correlates with spike in inbound requests.
• However, I'm seeing nothing in my Daphne logs to suggest that there is an error happening downstream.

I've ruled out slowness and networking issues, so I'm assuming that Daphne is running out of connections. But have no idea where I could look to validate this assumption or what the next steps would be.

Any advice?

[Dvs Khamele]

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Best Regards, 

Divyesh Khamele,

Pythonmate

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[Claudio Tubertini]

Please add your nginx conf, this error may be connected to gthe setup of the server.