Does anyone here have a problem with prefect agent not flushing stdout or just contents getting lost when doing something like

prefect agent local start -l mylabel --show-flow-logs 2>&1 | tee /my/file/here.log

? I've got a very long-running flow, and I don't see any output. Is prefect buffering? Do I need to use

stdbuf

when running the process?

Hey @William Grim, this is new to me, but it actually worked for me. Maybe going to DEBUG level logs will give you more logs to tell?

prefect agent local start -l mylabel --show-flow-logs --log-level=DEBUG 2>&1 | tee here.log

This worked for me and I got an output

@Kevin Kho sometimes it works. I see it only output info occasionally through tee. My theory is that it buffers and doesn't output, even though I would've thought it should flush. I'm going to try stdbuf soon and, if it doesn't work, I'll probably try to install my own handler at startup by getting in really early at startup. I'm just on vacation now or I would probably go ahead and try.

Sure that would certainly be welcome. I saw you post in the earlier thread about outputting all the logs with

structlog

. This seems to be related