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…