Proxy TCP through nginx to a FTP server on a fly machine

I was thinking the Nginx gateway, since that’s the one that we most think should be logging at least a minimal error…

Basically,

$ fly ssh console -a nginx-app-name
# apt-get update
# apt-get install --no-install-recommends curl
# curl http://localhost:2121/  # will fail, but does the failure get logged?

That’s not a bad guess, of course, and there have been regressions with handlers: ["tls"] mentioned in the forums in the past.

It often helps to narrow it down from both directions, though…