I am trying to deploy a Flask application on port 80 using Ubuntu22.04, Apache2 and Gunicorn. I am using unix .sock file created by gunicorn.

I have subsequently followed an online tutorial but with the same result:

https://medium.com/@thishantha17/build-a-simple-python-rest-api-with-apache2-gunicorn-and-flask-on-ubuntu-18-04-c9d47639139b

The application runs successfully from systemd .service file:

[Unit]
Description=Gunicorn instance to serve flask application
After=network.target

[Service]
User=root
Group=www-data
WorkingDirectory=/home/simon/flask_rest/
Environment="PATH=/home/simon/flask_rest/flaskvenv/bin"
ExecStart=/home/simon/flask_rest/flaskvenv/bin/gunicorn --config gunicorn_config.py wsgi:app

[Install]
WantedBy=multi-user.target

When I try to run from Apache2 I get a 503 error when trying to run a post request. Checking the logs in /var/log/apache2/flaskrest-error.log and get a proxy error:

proxy:error (13) permission denied – failed to make connection to unix web socket /home/simon/flask_rest/flaskrest.sock

proxy_http:error HTTP: failed to make connection to backend: httpd-UDS

My Apache2 config is as follows:

”’
<VirtualHost *:80>
# ServerAdmin root@ubuntu

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

<Location />
    ProxyPass unix:/home/simon/flask_rest/flaskrest.sock|http://127.0.0.1/
    ProxyPassReverse unix:/simon/root/flask_rest/flaskrest.sock|http://127.0.0.1/
</Location>

”’

Why am I unable to connect via Apache2 using the reverse proxy?

Additionally, I have allowed Apache and Apache (v6) within utw.

Many thanks for any help.