36
How to deploy any Python Web Application?
Hey everyone👨💻
In this blog post I will explain how you can deploy any ASGI/WSGI compliant Python Web App.
In this blog post I will explain how you can deploy any ASGI/WSGI compliant Python Web App.
Only ASGI Compliant Frameworks can be deployed using this method, other frameworks can't be deployed.
Setup your framework using the docs mentioned.
Since I'll be using FastAPI, my
main.py looks like thisfrom fastapi import FastAPI
app = FastAPI()
@app.get("/")
def hello_world():
return f"Hello World"🚀 We now have a FastAPI app ready, we now have to deploy it using NGINX. ⚙️
Depending upon your framework and choice of ASGI/WSGI Server, this process will be slightly different.
For Django Devs:
Your wsgi/asgi application would be called as
Choose ASGI or WSGI clearly and stay with that option throughout
<application_name>.<a/w>sgi:applicationChoose ASGI or WSGI clearly and stay with that option throughout
For Flask Devs:
If your app is in main.py, it would be called as
main:appIn this step we'll be binding the web-server to UNIX socket. Learn more about UNIX Sockets. here
I am attaching the docs of Daphne, Uvicorn and Gunicorn down which use different flags to bind the application to a port.
Run this command to bind it to the socket
hypercorn -b 'unix:/var/tmp/hypercorn.sock' -w 4 main:appIn this
Change
-w defines the number of workers.Change
hypercorn.sock to the server which you choose to use.Change the socket name according to your web server
🎇 Now we have our app listening on the
hypercorn.sock.We've to proxy this socket to NGINX and route NGINX to listen to the
hypercorn socket.worker_processes 1;
events {
worker_connections 512;
}
http {
server {
listen 8080;
server_name "localhost";
access_log /var/log/nginx/access.log;
error_log /var/log/error.log ;
location / {
proxy_pass http://unix:/var/tmp/hypercorn.sock;
}
}
}I'll briefly explain this config file:
This file should change based on your socket but the other configuration can be the same.
🚅 Save this file as nginx.conf
Feel free to read about NGINX here
Once this file is made, save it at
/etc/nginx/Either you can use docker to run a Linux server or shell into an instance.
If you want to copy it to docker.
COPY nginx.conf /etc/nginx/💣 You are ready to launch except one last step
Currently, NGINX can't read or write from the socket, so we need to
change access modeTo do this, run the following command:
chmod 777 /var/tmp/<socket>
sudo service nginx restart🌟Now you can listen from the port 8080,
http://localhost:8080If you are using systemctl, please use this command instead:
sudo systemctl restart nginxPlay around with NGINX config as you wish based on your application's requirements.
Thanks for reading🧑🚀
36