Question

Flask App Deyploy on Ubuntu 14.04. Apache2 with Python 3.7

Hi all,

so I have a simple Flask application that I would like to deploy to my Ubuntu 14.04. that is already set as a LAMP server. I have the Apache default configuration with MySQL and both Python 2.7 and 3.7 set up. I have a specific subdomain where I want to deploy my Flask app. I followed this tutorial: https://www.digitalocean.com/community/tutorials/how-to-set-up-an-apache-mysql-and-python-lamp-server-without-frameworks-on-ubuntu-14-04

But at the end I get a 500 error and when I look at the Apache error log G get that the flask module is not installed which is not true because when I check my virtual enviroment every requirement is there. I made my virtual enviroment with ‘pipenv shell’ and then I installed my requirements with ‘pip install -r requirements.txt’.

Error from the log:

mod_wsgi (pid=3501): Target WSGI script '/var/www/ja.estudent.hr/maktivnosti_backend.wsgi' cannot be loaded as Python module.
mod_wsgi (pid=3501): Exception occurred processing WSGI script '/var/www/ja.estudent.hr/maktivnosti_backend.wsgi'.
Traceback (most recent call last):
 File "/var/www/ja.estudent.hr/maktivnosti_backend.wsgi", line 12, in <module>
   from maktivnosti_backend import app as application
  File "/var/www/ja.estudent.hr/maktivnosti_backend/app.py", line 1, in <module>
    from flask import Flask, request, jsonify
ImportError: No module named 'flask'

Here is my setup:

My directory tree:

/var/www/ja.estudent.hr/ |-maktivnosti_backend |-app.py |-maktivnosti_backend.wsgi

My Apache configuration:

<IfModule mod_ssl.c>
<VirtualHost *:443>
	ServerAlias www.ja.estudent.hr
        ServerName ja.estudent.hr
        ServerAdmin webmaster@estudent.hr
        #referring the user to the recipes application
        DocumentRoot /var/www/ja.estudent.hr/maktivnosti_backend
        WSGIScriptAlias / /var/www/ja.estudent.hr/maktivnosti_backend.wsgi

        <Directory /var/www/ja.estudent.hr/maktivnosti_backend/>
		Require all granted
                Order allow,deny
                Allow from all
        </Directory>

        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined



RewriteCond %{HTTP_HOST} ^[^.]+\.[^.]+$
RewriteRule ^ http://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
RewriteCond %{HTTP_HOST} ^www\.([^.]+\.[^.]+\.[^.]+)$ [NC]
RewriteRule ^ http://%1%{REQUEST_URI} [R=301,L]
RewriteEngine on
Include /etc/letsencrypt/options-ssl-apache.conf
SSLCertificateFile /etc/letsencrypt/live/www.ja.estudent.hr/cert.pem
SSLCertificateKeyFile /etc/letsencrypt/live/www.ja.estudent.hr/privkey.pem
SSLCertificateChainFile /etc/letsencrypt/live/www.ja.estudent.hr/chain.pem
</VirtualHost>
</IfModule>

My wsgi file:

activate_this = '/home/(username)/.local/share/virtualenvs/maktivnosti_backend-tbfZiu-1/bin/activate_this.py'
with open(activate_this) as file_:
    exec(file_.read(), dict(__file__=activate_this))
#!/usr/bin/python
import sys
import logging
import site
sys.path.append('/home/(username)/.local/share/virtualenvs/maktivnosti_backend-tbfZiu-1/lib/python3.7/site-packages')
site.addsitedir('/home/(username)/.local/share/virtualenvs/maktivnosti_backend-tbfZiu-1/lib/python3.7/site-packages')
logging.basicConfig(stream=sys.stderr)
sys.path.insert(0, '/var/www/ja.estudent.hr/')
from maktivnosti_backend import app as application
application.secret_key = '(my secret key)'

If anyone can help me solve this problem I would really apreciate it!

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I have the same issue with flask not being recognized as an installed dependency and I am using apache2 and ubuntu 20.04 as well as pipenv. Did you solve this issue?