Question

running mutliple flask application

  • Posted on February 20, 2015
  • HamoudAsked by Hamoud

Hello there , i have followed the tutorial here : https://www.digitalocean.com/community/tutorials/how-to-deploy-a-flask-application-on-an-ubuntu-vps?comment=28202 , that is about how to deploy flask app on ubuntu and it works with me pretty fine.

but i’m wonder how to run multiple apps at the same time. when i enabled the virtual host the default one ( index.html for example diapered ) i want to give each application home directory like /var/www/App1 thus if my App1 route “/about” it will be domain.com/App1/about

i came from webfaction and i was familiar with the way the handle many applications at same host


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If the two Flask apps are running on the same domain just as subfolders, then you only need one VirtualHost but you’ll need multiple WSGIScriptAlias directives. Using the set up from the tutorial you linked as a base, your Apache configuration would look something like this:

WSGIPythonPath /var/www/FirstFlaskApp:/var/www/SecondFlaskApp

<VirtualHost *:80>
    ServerName domain.com
    ServerAdmin admin@domain.com

    WSGIScriptAlias /FirstFlaskApp /var/www/FirstFlaskApp/flaskapp.wsgi
    <Directory /var/www/FlaskApp/FlaskApp/>
            Order allow,deny
            Allow from all
    </Directory>

    Alias /FirstFlaskApp/static /var/www/FirstFlaskApp/FirstFlaskApp/static
    <Directory /var/www/FirstFlaskApp/FirstFlaskApp/static/>
            Order allow,deny
            Allow from all
    </Directory>

    WSGIScriptAlias /SecondFlaskApp /var/www/SecondFlaskApp/flaskapp.wsgi
    <Directory /var/www/FlaskApp/FlaskApp/>
            Order allow,deny
            Allow from all
    </Directory>

    Alias /SecondFlaskApp/static /var/www/SecondFlaskApp/SecondFlaskApp/static
    <Directory /var/www/SecondFlaskApp/SecondFlaskApp/static/>
            Order allow,deny
            Allow from all
    </Directory>

    ErrorLog ${APACHE_LOG_DIR}/error.log
    LogLevel warn
    CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

With a directory structure like this:

/var/www/
├── FirstFlaskApp
│   ├── FirstFlaskApp
│   │   ├── __init__.py
│   │   ├── __init__.pyc
│   │   ├── static
│   │   └── templates
│   └── flaskapp.wsgi
└── SecondFlaskApp
    ├── flaskapp.wsgi
    └── SecondFlaskApp
        ├── __init__.py
        ├── __init__.pyc
        ├── static
        └── templates

How the virtualhost will look like if each of the apps would have different domain names? Apache is not allowing two virtualhosts listening on the same port Number.

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