Find gunicorn log file in docker container

Question

I have a docker container running a python service with gunicorn. This is how the service was started :

gunicorn --bind 0.0.0.0:6435 --certfile=cert.pem --keyfile=key.pem --ssl-version=5 --ciphers=EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH app:app -w=5 --timeout=500 --daemon

But, i am unable to find log files for the 5 workers. What would be the default path to find these log files?

I tried using the find command find / -type f -name "hs_err_pid" since these are the default file names gunicorn saves the log files with. But this gives me the following permission errors:

    find: ‘/proc/1/map_files’: Operation not permitted
find: ‘/proc/16/map_files’: Operation not permitted
find: ‘/proc/89/map_files’: Operation not permitted

Any way to find out the log files?

Sadoc

Answer 1

I suggest you to add --access-logfile YOUR_FILE to your command to specify a file or redirect it to stdout using -. the same goes for error logs.

see this

Doyledoyley

Thanks for the suggestion. Yes, thats what we are doing for the new deployment, just wanted to check if we could get the previous logs – Sadoc

for the error logs : Changed in version 19.2: Log to stderr by default. so docker logs should be the place to see them. I think – Doyledoyley

there is no syslog folder in /var/log/ :( – Sadoc

sorry for the late reply.. nothing there also which would have these logs – Sadoc

Answer 2

If you are doing it via a shell script.

gunicorn --chdir myapp myapp.asgi:application \
    -k uvicorn.workers.UvicornWorker \
    --name apipa \
    --bind 0.0.0.0:5555 \
    --access-logfile - \
    --error-logfile - 

If you are using a gunicorn config file

gunicorn your_app.wsgi:application -c /path/to/gunicorn.conf.py  

with contents of the gunicorn.conf.py as

bind = "0.0.0.0:5555"  
accesslog = "-"  
errorlog = "-"  

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