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pythondebuggingloggingbottlegunicorn

Is there a way to log python print statements in gunicorn?

With my Procfile like this:

web: gunicorn app:app \
    --bind "$HOST:$PORT" \
    --error-logfile "-" \
    --enable-stdio-inheritance \
    --reload \
    --log-level "debug"

is it in any way possible to get python print statements to be logged to stdout / bash? I am using the bottle framework here as well, if that affects anything.

Solution

  • It turns out the print statements were actually getting through, but with delay.

    The gunicorn docs for --enable-stdio-inheritance note to set the PYTHONUNBUFFERED, which I thought I had, but it seems with wrong syntax.

    I solved it using a .env file with my foreman setup to set the variable like this:

    PYTHONUNBUFFERED=TRUE