* Flask app running on VPS, Apache serving WordPress on Virtualhost; nginx reverse proxy supporting static component of Flask app, gunicorn (with supervisor) to run the Flask app.
cd /var/www
sudo mkdir HelloFlaskWorldApp && cd HelloFlaskWorldApp
sudo mkdir HelloFlaskWorldApp && cd HelloFlaskWorldApp
sudo mkdir static templates
Current structure would be:
/var/www/HelloFlaskWorldApp
--------------HelloFlaskWorldApp
-------------------static
-------------------templates
-------------------__init__.py ####(To be created in next step!)
Add the application (in the same level as static and templates directories:
sudo nano __init__.py
from flask import Flask
app = Flask(__name__)
@app.route("/")
def hello():
return "Hello, Flask World!"
if __name__ == "__main__":
app.run()
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III :: venv and flask
Install & setup virtual environments and install flask there
cd ..
sudo apt-get install python-pip
sudo pip install virtualenv
sudo virtualenv venv ## venv is the name of the virtual environment
. venv/bin/activate ## activate the virtual environment
sudo pip3 install Flask
Test the installation
sudo python3 HelloFlaskWorldApp/__init__.py
Expected output: * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
* now deactivate !
cd /var/www/HelloFlaskWorldApp
sudo nano helloflaskworldapp.wsgi
#!/usr/bin/python
import sys
import logging
logging.basicConfig(stream=sys.stderr)
sys.path.insert(0,"/var/www/HelloFlaskWorldApp/")
from FlaskApp import app as application
application.secret_key = 'Wizard of Oz'
Current directory structure:
######## listing here
VI :: Restart Apache
sudo service apache2 restart
** running via gunicorn
install into venv
activate venv
run: gunicorn app:app
** nginx config – listen on port OTHER THAN 80
You have to go to the /etc/nginx/sites-enabled/ and if this is the default configuration then there should be a file called “default”.
Edit that file and put (If you are willing to put 81 as your port for nginx)
server { listen 81; }
The start the server
sudo service nginx start
Then access localhost:81
install
setup static files serving directly (without passing to apache or gunicorn)
** apache config
aaa
** supervisor config
You have to start supervisord before you can use supervisorctl. In my case:
