gunicorn | Green Unicorn ' is a WSGI HTTP Server

by benoitc Python Version: Current License: Non-SPDX

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kandi X-RAY | gunicorn Summary

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gunicorn 'Green Unicorn' is a WSGI HTTP Server for UNIX, fast clients and sleepy applications.

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gunicorn Examples and Code Snippets

Server Workers - Gunicorn with Uvicorn-Install Gunicorn and Uvicorn

Python

Lines of Code : 3

License : Permissive (MIT)

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$ pip install "uvicorn[standard]" gunicorn

---> 100%

Server Workers - Gunicorn with Uvicorn

Python

Lines of Code : 1

License : Permissive (MIT)

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In particular, when running on **Kubernetes** you will probably **not** want to use Gunicorn and instead run **a single Uvicorn process per container**, but I'll tell you about it later in that chapter.

2014-news.rst

Python

Lines of Code : 0

License : Non-SPDX (NOASSERTION)

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Please see :doc:`news` for the latest changes.

gunicorn - websocket

Python

Lines of Code : 256

License : Non-SPDX

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import collections
import errno
import re
from hashlib import md5, sha1
import base64
from base64 import b64encode, b64decode
import socket
import struct
import logging
from socket import error as SocketError

import eventlet
from gunicorn.workers.b

gunicorn - gevent websocket

Python

Lines of Code : 253

License : Non-SPDX

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import collections
import errno
import re
import hashlib
import base64
from base64 import b64encode, b64decode
import socket
import struct
import logging
from socket import error as SocketError

import gevent
from gunicorn.workers.base_async import

gunicorn - settings

Python

Lines of Code : 91

License : Non-SPDX

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# Django settings for testing project.

DEBUG = True
TEMPLATE_DEBUG = DEBUG

ADMINS = (
    # ('Your Name', 'your_email@example.com'),
)

MANAGERS = ADMINS

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3', # Add 'postgre

Flask App with Dockerfile on Heroku Web process failed to bind to $PORT within 60 seconds of launch

Python

Lines of Code : 5

License : Strong Copyleft (CC BY-SA 4.0)

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bind = "0.0.0.0:" + os.getenv("PORT")
workers = 4
threads = 4
timeout = 120

aiohttp.ClientSession() in Quart

Python

Lines of Code : 8

License : Strong Copyleft (CC BY-SA 4.0)

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@app.before_serving
async def startup():
    app.client = aiohttp.ClientSession()

@app.get("/")
async def index():
    await app.client.get(...)

ModuleNotFoundError: No module named 'app' Heroku

Python

Lines of Code : 14

License : Strong Copyleft (CC BY-SA 4.0)

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INSTALLED_APPS = [
    # ...
    'qr_code',
    # or
    'qr_code.apps.Qr_CodeConfig',
]

INSTALLED_APPS = [
    # ...
    'qrcode',
    # or
    'qrcode.apps.QrCodeConfig',
]

Delete db.sqlite via terminal (Django)

Python

Lines of Code : 17

License : Strong Copyleft (CC BY-SA 4.0)

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heroku run python manage.py migrate

web: gunicorn app.wsgi
release: python manage.py migrate

class Migration(migrations.Migration):

    dependencies = [
        ('app1', '0001_initial'),

Community Discussions

Trending Discussions on gunicorn

Not able to connect to websocket using Nginx and Uvicorn

Static files not loading for deployed django rest framework

Uvicorn async workers are still working synchronously

pymongo [SSL: CERTIFICATE_VERIFY_FAILED]: certificate has expired on Mongo Atlas

Share media between multiple django(VMs) servers

Google app engine deployment fails- Error while finding module specification for 'pip' (AttributeError: module '__main__' has no attribute '__file__')

django rest Error - AttributeError: module 'collections' has no attribute 'MutableMapping'

Django returning "CSRF verification failed. Request aborted. " behind Nginx proxy locally

when i set worker time out in gunicorn for Django Application, other users are not able to access the application

Could not find a version that satisfies the requirement psycopg2

QUESTION

Not able to connect to websocket using Nginx and Uvicorn

Asked 2022-Mar-26 at 10:20

I built a docker container with Django, Uvicorn, Nginx and Redis, and am using django-channels but when I run this it says it cannot connect to the websocket and this is seen in the browser console:

WebSocket connection to 'ws://127.0.0.1:8080/ws/notifications/' failed

It is working fine when I use Django's runserver command for development but when I include Nginx and Uvicorn it breaks.

Entrypoint.sh:

...

ANSWER

Answered 2022-Mar-26 at 10:20

As noted in a comment by Iain Shelvington, it seems like websockets are not included in the base install of uvicorn

Source https://stackoverflow.com/questions/68828128

QUESTION

Static files not loading for deployed django rest framework

Asked 2022-Mar-14 at 06:41

I have built and successfully deployed a django rest framework using gunicorn and nginx on Ubuntu 18.04. However, the static files are not being pulled up. Django web app without loaded static files

Here is my nginx configuration:

...

ANSWER

Answered 2022-Mar-14 at 06:41

You don't need equals sign here:

Source https://stackoverflow.com/questions/71462799

QUESTION

Uvicorn async workers are still working synchronously

Asked 2022-Feb-07 at 18:39

Question in short

I have migrated my project from Django 2.2 to Django 3.2, and now I want to start using the possibility for asynchronous views. I have created an async view, setup asgi configuration, and run gunicorn with a Uvicorn worker. When swarming this server with 10 users concurrently, they are served synchronously. What do I need to configure in order to serve 10 concurrent users an async view?

Question in detail

This is what I did so far in my local environment:

I am working with Django 3.2.10 and Python 3.9.
I have installed gunicorn and uvicorn through pip
I have created an asgi.py file with the following contents

...

ANSWER

Answered 2022-Feb-06 at 21:43

When running the gunicorn command, you can try to add workers parameter with using options -w or --workers.

It defaults to 1 as stated in the gunicorn documentation. You may want to try to increase that value.

Example usage:

Source https://stackoverflow.com/questions/70864474

QUESTION

pymongo [SSL: CERTIFICATE_VERIFY_FAILED]: certificate has expired on Mongo Atlas

Asked 2022-Jan-29 at 22:03

I am using MongoDB(Mongo Atlas) in my Django app. All was working fine till yesterday. But today, when I ran the server, it is showing me the following error on console

...

ANSWER

Answered 2021-Oct-03 at 05:57

This is because of a root CA Let’s Encrypt uses (and Mongo Atals uses Let's Encrypt) has expired on 2020-09-30 - namely the "IdentTrust DST Root CA X3" one.

The fix is to manually install in the Windows certificate store the "ISRG Root X1" and "ISRG Root X2" root certificates, and the "Let’s Encrypt R3" intermediate one - link to their official site - https://letsencrypt.org/certificates/

Copy from the comments: download the .der field from the 1st category, download, double click and follow the wizard to install it.

Source https://stackoverflow.com/questions/69397039

QUESTION

Share media between multiple django(VMs) servers

Asked 2022-Jan-15 at 10:58

We have deployed a django server (nginx/gunicorn/django) but to scale the server there are multiple instances of same django application running.

Here is the diagram (architecture):

Each blue rectangle is a Virtual Machine.

HAProxy sends all request to example.com/admin to Server 3.other requests are divided between Server 1 and Server 2.(load balance).

Old Problem:

Each machine has a media folder and when admin Uploads something the uploaded media is only on Server 3. (normal users can't upload anything)

We solved this by sending all requests to example.com/media/* to Server 3 and nginx from Server3 serves all static files and media.

Problem right now

We are also using sorl-thumbnail.

When a requests comes for example.com/,sorl-thumbnail tries to access the media file but it doesn't exist on this machine because it's on Server3.

So now all requests to that machine(server 1 or 2) get 404 for that media file.

One solution that comes to mind is to make a shared partition between all 3 machines and use it as media. Another solution is to sync all media folders after each upload but this solution has problem and that is we have almost 2000 requests per second and sometimes sync might not be fast enough and sorl-thumbnail creates the database record of empty file and 404 happens.

Thanks in advance and sorry for long question.

...

ANSWER

Answered 2021-Dec-26 at 19:53

You should use an object store to save and serve your user uploaded files. django-storages makes the implementation really simple.

If you don’t want to use cloud based AWS S3 or equivalent, you can host your own on-prem S3 compatible object store with minio.

On your current setup I don’t see any easy way to fix where the number of vm s are dynamic depending on load.

If you have deployment automation then maybe try out rsync so that the vm takes care of syncing files with other vms.

Source https://stackoverflow.com/questions/70486824

QUESTION

Google app engine deployment fails- Error while finding module specification for 'pip' (AttributeError: module '__main__' has no attribute '__file__')

Asked 2022-Jan-08 at 22:02

We are using command prompt c:\gcloud app deploy app.yaml, but get the following error:

...

ANSWER

Answered 2022-Jan-06 at 09:24

Your setuptools version is likely to be yanked:

https://pypi.org/project/setuptools/60.3.0/

Not sure how to fix that without a working pip though.

Source https://stackoverflow.com/questions/70602290

QUESTION

django rest Error - AttributeError: module 'collections' has no attribute 'MutableMapping'

Asked 2022-Jan-07 at 19:13

I'm build Django app, and it's work fine on my machine, but when I run inside docker container it's rest framework keep crashing, but when I comment any connection with rest framework it's work fine.

My machine: Kali Linux 2021.3
docker machine: Raspberry Pi 4 4gb
docker container image: python:rc-alpine3.14
python version on my machine: Python 3.9.7
python version on container: Python 3.10.0rc2

error output:

...

ANSWER

Answered 2022-Jan-07 at 19:13

You can downgrade your Python version. That should solve your problem; if not, use collections.abc.Mapping instead of the deprecated collections.Mapping.

Refer here: Link

Source https://stackoverflow.com/questions/69464512

QUESTION

Django returning "CSRF verification failed. Request aborted. " behind Nginx proxy locally

Asked 2021-Dec-28 at 16:43

I'm running a simple Django application without any complicated setup (most of the default, Django allauth & Django Rest Framework).

The infrastructure for running both locally and remotely is in a docker-compose file:

...

ANSWER

Answered 2021-Dec-28 at 16:43

Since you're using a proxy that translates https requests into http, you need to configure Django to allow POST requests from a different scheme (since Django 4.0) by adding this to settings.py:

Source https://stackoverflow.com/questions/70501974

QUESTION

when i set worker time out in gunicorn for Django Application, other users are not able to access the application

Asked 2021-Dec-20 at 09:15

I have a django application running on Gunicorn and Nginx. There is one request in application which takes 10 min to load the page [There is lot of data to process], i have increased the worker time to 1200 sec for Gunicorn to make it take sufficient time to load the page. it works fine but until that request is getting processed other users are not able to access the application gives :

504 Gateway Time-out nginx/1.21.4

This is my DOCKER

...

ANSWER

Answered 2021-Dec-20 at 09:15

This might happen because the amount of workers is not sufficient.

Try to increase the amount by adding --workers=4 to the gunicorn call.

Source https://stackoverflow.com/questions/70419394

QUESTION

Could not find a version that satisfies the requirement psycopg2

Asked 2021-Dec-05 at 21:00

I'm working on CI for my Python + Django project. I have to use the python:3.9-alpine image. A weird error is popping in my CI pipelines:

...

ANSWER

Answered 2021-Dec-05 at 17:35

What is the reason of my error?

Did you read my previous answer to a similar question of yours? The last part warns about certain combinations of Alpine + Python and this seems to be happening right now.