aster.cloud aster.cloud
  • /
  • Platforms
    • Public Cloud
    • On-Premise
    • Hybrid Cloud
    • Data
  • Architecture
    • Design
    • Solutions
    • Enterprise
  • Engineering
    • Automation
    • Software Engineering
    • Project Management
    • DevOps
  • Programming
    • Learning
  • Tools
  • About
  • /
  • Platforms
    • Public Cloud
    • On-Premise
    • Hybrid Cloud
    • Data
  • Architecture
    • Design
    • Solutions
    • Enterprise
  • Engineering
    • Automation
    • Software Engineering
    • Project Management
    • DevOps
  • Programming
    • Learning
  • Tools
  • About
aster.cloud aster.cloud
  • /
  • Platforms
    • Public Cloud
    • On-Premise
    • Hybrid Cloud
    • Data
  • Architecture
    • Design
    • Solutions
    • Enterprise
  • Engineering
    • Automation
    • Software Engineering
    • Project Management
    • DevOps
  • Programming
    • Learning
  • Tools
  • About
  • Software Engineering
  • Tech

How-To: Deploy Python Flask applications using NGINX and uWSGI – Deployment (Part 3 of 3)

  • aster.cloud
  • November 22, 2022
  • 2 minute read

This is the last part of the 3-part guide on setting up a Python/API application on Ubuntu 22.04 with NGINX as the web server and uWSGI and uWSGI Emperor which is responsible for loading the application. 

If you’ve missed the installation part, see here. If you’ve finished the installation but not the configuration go here.


Partner with aster.cloud
for your next big idea.
Let us know here.



From our partners:

CITI.IO :: Business. Institutions. Society. Global Political Economy.
CYBERPOGO.COM :: For the Arts, Sciences, and Technology.
DADAHACKS.COM :: Parenting For The Rest Of Us.
ZEDISTA.COM :: Entertainment. Sports. Culture. Escape.
TAKUMAKU.COM :: For The Hearth And Home.
ASTER.CLOUD :: From The Cloud And Beyond.
LIWAIWAI.COM :: Intelligence, Inside and Outside.
GLOBALCLOUDPLATFORMS.COM :: For The World's Computing Needs.
FIREGULAMAN.COM :: For The Fire In The Belly Of The Coder.
ASTERCASTER.COM :: Supra Astra. Beyond The Stars.
BARTDAY.COM :: Prosperity For Everyone.

Prerequisites

  • Ubuntu 22.04
  • Installed NGINX, uWSGI, and uWSGI-Emperor.
  • Performed basic configuration of NGINX, uWSGI and uWSGI-Emperor from the previous guides.

Deploy a Flask App/API using uWSGI and Nginx

Note: For this demo, we used the sample flask app and a python virtual environment. And it will be located under /var/www

01. Create the following directories and files

Directories and file structure

|__ /var/www
    |__ geek_flask_app
        |__ api
            |__ __init__.py
            |__ res
               |__ __init__.py
               |__ endpoints.py
        |__ app_wsgi.py
        |__ requirements.txt

Or create the files and directories using the following commands

$ cd /var/www
$ sudo mkdir -p geek_flask_app/api/res

02. Create the init file

$ sudo nano /var/www/geek_flask_app/api/__init__.py

Set the content as follows

from flask import Flask
application = Flask(__name__)

import api.res.endpoints

03.Create the WSGI python file

$ sudo nano /var/www/geek_flask_app/app_wsgi.py

Set the content as follows

from api import application

04. Create the endpoints python module. This will contain the exposed application service endpoints.

$ sudo nano /var/www/geek_flask_app/api/res/endpoints.py

Set the content as follows

# -*- coding: utf-8 -*-

from flask  import jsonify
from api    import application


@application.route('/', methods=['GET'])
def get_app_properties():
  name    = 'geek-flask-api'
  version = '0.0.1'

  app_properties = \
    {
      'name'      : name
      , 'version' : version
    }

  return jsonify(app_properties)

04. Setup the requirements text file. It contains the required python libraries. In this example, we only need flask.

$ sudo nano /var/www/geek_flask_app/requirements.txt

Set the content as follows

flask

05. Install python libraries that are required by your application.

Read More  Google I/O 2019 | Fireside Chat with Hiroshi Lockheimer, Google Sr. VP, Platforms and Ecosystems

Note: Since we are using a virtual environment, activate the virtual environment and install the python libraries. See the Setup the Python Virtual Environment section.

$ source ~/geek-venv/bin/activate
(geek-venv) ubuntu@{host}:~$ cd /var/www/geek_flask_app
(geek-venv) ubuntu@{host}:~$ pip install -r requirements.txt
(geek-venv) ubuntu@{host}:~$ deactivate

03. Restart the uwsgi-emperor service.

$ sudo service uwsgi-emperor restart

04. To verify if the flask app is deployed, test using the http-socket defined in uwsgi configuration.

$ curl http://127.0.0.1:8081

It should return a JSON structured response

{"name":"geek-flask-api","version":"0.0.1"}

05. Next is to verify if NGINX can communicate with our Python Flask app on uWSGI. We now have to remove the default NGINX configuration.

$ sudo rm /etc/nginx/sites-enabled/default

06. Restart the NGINX server

$ sudo service nginx restart

07. Verify using cURL on the NGINX.

$ curl http://localhost

It should also show the same response when communicating with the port defined in uWSGI.

{"name":"geek-flask-api","version":"0.0.1"}

Next step is to configure your DNS and map it to your NGINX configuration. And you should next configure the previously commented gid and uid to use the proper user, an example is “www-data”.


For enquiries, product placements, sponsorships, and collaborations, connect with us at [email protected]. We'd love to hear from you!

Our humans need coffee too! Your support is highly appreciated, thank you!

aster.cloud

You May Also Like
Getting things done makes her feel amazing
View Post
  • Computing
  • Data
  • Featured
  • Learning
  • Tech
  • Technology

Nurturing Minds in the Digital Revolution

  • April 25, 2025
View Post
  • Software Engineering
  • Technology

Claude 3.7 Sonnet and Claude Code

  • February 25, 2025
View Post
  • Tech

Deep dive into AI with Google Cloud’s global generative AI roadshow

  • February 18, 2025
View Post
  • Engineering
  • Software Engineering

This Month in Julia World

  • January 17, 2025
View Post
  • Engineering
  • Software Engineering

Google Summer of Code 2025 is here!

  • January 17, 2025
Volvo Group: Confidently ahead at CES
View Post
  • Tech

Volvo Group: Confidently ahead at CES

  • January 8, 2025
zedreviews-ces-2025-social-meta
View Post
  • Featured
  • Gears
  • Tech
  • Technology

What Not to Miss at CES 2025

  • January 6, 2025
View Post
  • Tech

IBM and Pasqal Plan to Expand Quantum-Centric Supercomputing Initiative

  • November 21, 2024

Stay Connected!
LATEST
  • 1
    Pure Accelerate 2025: All the news and updates live from Las Vegas
    • June 18, 2025
  • 2
    ‘This was a very purposeful strategy’: Pure Storage unveils Enterprise Data Cloud in bid to unify data storage, management
    • June 18, 2025
  • What is cloud bursting?
    • June 18, 2025
  • 4
    There’s a ‘cloud reset’ underway, and VMware Cloud Foundation 9.0 is a chance for Broadcom to pounce on it
    • June 17, 2025
  • What is confidential computing?
    • June 17, 2025
  • Oracle adds xAI Grok models to OCI
    • June 17, 2025
  • Fine-tune your storage-as-a-service approach
    • June 16, 2025
  • 8
    Advanced audio dialog and generation with Gemini 2.5
    • June 15, 2025
  • 9
    A Father’s Day Gift for Every Pop and Papa
    • June 13, 2025
  • 10
    Global cloud spending might be booming, but AWS is trailing Microsoft and Google
    • June 13, 2025
about
Hello World!

We are aster.cloud. We’re created by programmers for programmers.

Our site aims to provide guides, programming tips, reviews, and interesting materials for tech people and those who want to learn in general.

We would like to hear from you.

If you have any feedback, enquiries, or sponsorship request, kindly reach out to us at:

[email protected]
Most Popular
  • Google Cloud, Cloudflare struck by widespread outages
    • June 12, 2025
  • What is PC as a service (PCaaS)?
    • June 12, 2025
  • 3
    Crayon targets mid-market gains with expanded Google Cloud partnership
    • June 10, 2025
  • By the numbers: Use AI to fill the IT skills gap
    • June 11, 2025
  • 5
    Apple services deliver powerful features and intelligent updates to users this autumn
    • June 11, 2025
  • /
  • Technology
  • Tools
  • About
  • Contact Us

Input your search keywords and press Enter.