How to to deploy python app sepratly on same server (previous one ) /root/demo - Deploy Python app on Ubuntu Server using ssh Terminal - by Vasu Birla

hello friends , am Vasu Birla and Today we will deploy Python App..

in previous post we have deployed NODE js app on 0.0.0.0 (your server IP) and

acess it using http://0.0.0.0/  

Now  If you want to deploy a Python app separately on the same server,

in the /root/demo directory, and access it using http://0.0.0.0/demo,

 you can use Apache2 and mod_wsgi to host the Python app.

  Additionally, you can configure Apache2 to proxy the requests for the

  /demo path to your Python app without affecting the Node.js app hosted at the root.  

First of all  put your python project folder on root location of server ,

using putty with cloning git repo or using FTP server and direct paste folder

(in previous post we aleady discussed it)

  lets suppose your folder name is demo .. location would be  /root/demo

  install necessery things to support your python app .  like pip install or django ..etc

    as well install in virtual enviorment also ..

     -> python3 -m venv venv

       -> source venv/bin/activate

       ->  pip install django

       -> pip install -r requirements.txt

       -> deactivate

 Step 1: Install mod_wsgi

First, make sure mod_wsgi is installed on your server:

  -> sudo apt update

  -> sudo apt install libapache2-mod-wsgi-py3

 Step 2: Set Up the Python App

Place your Python app code inside the /root/demo directory. Since you mentioned that there is a manage.py file, I assume you are using Django. Make sure you have installed Django and other required dependencies.

Step 3: there are two ways

----------------------(i) . with Unique Port ---------------------------------

    in settings.py you have to allow host either with server IP or with "*" for

    all Internal Hosts

opeen settings.py and put this ->

ALLOWED_HOSTS = ['*']

after doint this verify it using

Verify the Setup

in browser access -> http://YourServerIP:8000/ in my case (http://62.72.5.123:8000/)

and here we go ..you can see your project Live ..

//------------------------------------------------------------------------------

---------------------- (ii). With Apache2 ---------------------------------

Modify Apache2 Configuration for Node.js App

Edit the virtual host configuration for the Node.js app (puno):

run

-> sudo nano /etc/apache2/sites-available/puno.conf  

note - puno.conf is already made for node js app .. but we have to add seprate host for /demo

fot following code in puno.conf

#puno.conf

<VirtualHost *:80>

    ServerName 62.72.5.123

 # Proxy /demo to Python app

    ProxyPass /demo http://127.0.0.1:8000/demo

    ProxyPassReverse /demo http://127.0.0.1:8000/demo

    # Exclude all sub-routes of /demo from being proxied

    <LocationMatch "^/demo($|/)">

        ProxyPass "!"

    </LocationMatch>

    # Proxy other requests to Node.js app

    ProxyPass / http://127.0.0.1:3000/

    ProxyPassReverse / http://127.0.0.1:3000/

</VirtualHost>

Enable the Apache2 Configuration and Restart Apache2

Enable the virtual host configuration and restart Apache2:

-> sudo a2ensite puno.conf

-> sudo service apache2 restart

: Verify the Setup

Now, accessing http://0.0.0.0/demo/ should route requests to your Python app (/demo), and accessing http://0.0.0.0/ should route requests to your Node.js app (kilvishNodeapp).

//---------------------------------------------------------------------------------

Now for keeping alive this Python App without terminal process

we will use same  pm2 pakage (out node app is already running with pm2 in previous post)

Step 1: Ensure the Virtual Environment and Install Django

Make sure you have set up the Python virtual environment for your Django app (demo) and

installed Django within the virtual environment as described before.

if you didnt install require pakages in virtual env yet .. follow below commands

        go to puroject folder location  (in my case its demo) run following command to make virtual env

       ->  cd /root/demo  

       -> python3 -m venv venv

       -> source venv/bin/activate

       ->  pip install django

        -> pip install -r requirements.txt

       -> deactivate

Step 2: Start the Python App with PM2

Start the Python app (demo) using PM2's process file format:

Note - here  /root/demo/venv/bin/python  is my virtual env path .. you have to put yours

run following

-> pm2 start manage.py --name "demo" --interpreter /root/demo/venv/bin/python -- runserver 0.0.0.0:8000

-> pm2 save

 

 -> sudo service apache2 restart  

 ---------------------- Completed -------------------------