nginx 504,can't connet mysql

Asked Aug 01 '18 at 01:56

Active Aug 21 '18 at 12:45

Viewed 88 times

Environment:

python 3.6
flask
flask-sqlalchemy
mysql
gunicorn
nginx

Phenomenon:

If I run gunicorn and nginx, and connect service http address, can't connect and show 504 time-out error.
If I only run python flask(0.0.0.0), I can connect succeessful.
If I firstly run python flask(0.0.0.0), and shutdown it. Next, I run gunicorn and nginx, I can connect successful.
But, after about 2 or 3 hours, I can't connect http (504 error) again. So, I must repet step3.

Try measure: add send\read time and increase buffer size in nginx conf. But that doesn't work also.

I guess the sqlalchemy or mysql are causing this problem because it works perfectly if I don't use either of these libraries.

Can anyone tell me how I can fix it? Thanks.

edited Aug 21 '18 at 12:45

James Jones

asked Aug 01 '18 at 01:56

glados.ai

what was error when you got 504 ? – Thanh Nguyen Van Aug 01 '18 at 02:01
504 gate time out – glados.ai Aug 01 '18 at 02:21
I mean the flask log, I don't understans step 3, you run python flask then shutdown it ? – Thanh Nguyen Van Aug 01 '18 at 02:29
yes,i mean, run python flask.py and ctrl+c close it. (it's so weird) – glados.ai Aug 01 '18 at 09:29
i recommend that you use supervisor to control gunicorn. I use this as an example for that: https://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-xvii-deployment-on-linux – jalazbe Aug 21 '18 at 12:33

0 Answers0