How to Install Apache with Python Mod_wsgi on Ubuntu 20.04

Tech World 2020-05-31 Channel: Linux

Abstract: status = '200 OK' html = '\n' \ '\n' \ ' Hooraywhich describes how a web server communicates with the web applications. The mod_wsgi is an

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The Web Server Gateway Interface (WSGI in short) is a simple method for the web servers to forward requests to the web applications or frameworks written in Python. The WSGI is the specification, which describes how a web server communicates with the web applications.

The mod_wsgi is an Apache module used to serve Python scripts over HTTP. This tutorial helps you with how to install the Apache mod_wsgi module on Ubuntu 20.04 system.

Prerequisites

Step 1 – Installing Python

You must have installed the required Python version on your system. For the Ubuntu systems, you can use the apt package manager to install Python on your system.

sudo apt update
sudo apt install python3 libexpat1

Step 2 – Install Apache with mod_wsgi Module

Next, you need to install the Apache webserver including the Apache utility package and mod_wsgi Python module on your system. To install these packages run the following commands.

sudo apt install apache2 apache2-utils ssl-cert libapache2-mod-wsgi

After installation, restart the Apache service to reload all modules.

sudo systemctl restart apache2

Step 3 – Setup Apache for WSGI

Now, we will create a sample python script to serve via mod_wsgi Apache module. Create a Python script and edit in your favorite text editor:

mkdir -p /var/www/scripts
sudo nano /var/www/scripts/test_wsgi_script.py

Add the following content:

def application(environ,start_response): status = '200 OK' html = '<html>\n' \ '<body>\n' \ ' Hooray, mod_wsgi is working\n' \ '</body>\n' \ '</html>\n' response_header = [('Content-type','text/html')] start_response(status,response_header) return [html]12345678910def application(environ,start_response): status = '200 OK' html = '<html>\n' \ '<body>\n' \ ' Hooray, mod_wsgi is working\n' \ '</body>\n' \ '</html>\n' response_header = [('Content-type','text/html')] start_response(status,response_header) return [html]

Save your Python script and close the file.

Next, configure the Apache server to serve this file over the HTTP protocol. Let’s create a configuration file to serve the wsgi_test_script.py script with the directory URL.

sudo nano /etc/apache2/conf-available/mod-wsgi.conf

Add the following content:

WSGIScriptAlias /test_wsgi /var/www/scripts/test_wsgi_script.py

After completing the above steps enable mod-wsgi configuration and restart Apache service.

sudo a2enconf mod-wsgi
sudo systemctl restart apache2

Step 4 – Test Setup

The Python script is ready to serve over Apache. You can test the script by accessing the following URL in a web browser. Make sure to change SERVER_IP_OR_HOSTNAME with the actual server IP or domain name pointed to the IP.