Deployment as uwsgi application

Fano Framework can be deployed as uwsgi web application. uwsgi is binary protocol similar to FastCGI protocol but simpler to parse.

See Working with Application for information how to create uwsgi web application.

See Fano uwsgi for example application. You may want to look Scaffolding with Fano CLI to easily create new uwsgi web application project.

Deploy with Fano CLI

Simplest way to setup Fano web application with web server is to deploy uwsgi application with Fano CLI, run with --deploy-uwsgi=[domain name].

Inside Fano web application project directory, run

$ sudo fanocli --deploy-uwsgi=myapp.me

Command above, will create virtual host for Apache web server, enabled virtual host configuration, reload Apache web server configuration and add entry to myapp.me domain in /etc/hosts.

To setup for nginx web server add --web-server=nginx. Without it, it is assumed Apache web server.

$ sudo fanocli --deploy-uwsgi=myapp.me --web-server=nginx

If you want to setup manually without Fano CLI, read section below.

Skip adding domain name entry in /etc/hosts

By default --deploy-* parameter will cause domain name entry is added in /etc/hosts file. You may want to setup domain name with DNS server manually or you do not want to mess up with /etc/hosts file. You can avoid it by adding --skip-etc-hosts parameter.

$ sudo fanocli --deploy-uwsgi=myapp.me --skip-etc-hosts

Generate virtual host config to standard output

If you want to generate virtual host configuration without actually modifying web server configuration, you can use --stdout command line option. This option will generate virtual host configuration and print it to standard output. It is useful if you want to deploy configuration manually.

Because it will not change any web server configuration, you do not need to run it with root privilege. So following code is suffice.

$ fanocli --deploy-uwsgi=myapp.me --stdout

Apache with mod_proxy_uwsgi module

To deploy as uwsgi application with mod_proxy_uwsgi, you need to have mod_proxy_uwsgi installed and loaded. This module is not installed by default.

Debian

To install module on Debian,

$ sudo apt install libapache2-mod-proxy-uwsgi

To enable module,

$ sudo a2enmod proxy_uwsgi
$ sudo systemctl restart apache2

Create virtual host config and add ProxyPassMatch, for example

<VirtualHost *:80>
     ServerName www.example.com
     DocumentRoot /home/example/public

     <Directory "/home/example/public">
         Options +ExecCGI
         AllowOverride FileInfo
         Require all granted
     </Directory>

    ProxyRequests Off
    ProxyPassMatch /(css|images|js).* !
    ProxyPassMatch ^/(.*)$ uwsgi://127.0.0.1:20477
</VirtualHost>

You may need to replace uwsgi://127.0.0.1:20477 with host and port where your application is running. If you use unix domain socket, you need to modify ProxyPassMatch as follows

ProxyPassMatch ^/(.*)$ "unix:/path/to/app.sock|uwsgi://127.0.0.1/"

Line |uwsgi://127.0.0.1/ is required so mod_proxy_uwsgi is called to handle request, although, host and port information are ignored.

Two ProxyPassMatch lines tell Apache to serve requests for files inside css, images, js directories directly. For other, pass requests to our application.

On Debian, save it to /etc/apache2/sites-available for example as fano-uwsgi.conf

Enable this site and reload Apache

$ sudo a2ensite fano-uwsgi.conf
$ sudo systemctl reload apache2

Fedora

The difference between Debian and Fedora regarding Apache mostly about default service name (Debian uses apache2 and Fedora uses httpd), user which Apache run (Debian uses www-data user while Fedora uses apache) and default Apache configuration location.

  • Create virtual host

Apache main configuration is stored in /etc/httpd/httpd.conf. To add virtual host configuration, you can simply add entry to this file or prefered way is to create configuration in file /etc/httpd/conf.d/ directory.

In Fedora and Apache 2.4, /etc/httpd/conf.d/ directory will be search for additional configurations. So you can just create virtual host file inside this directory.

  • Reload Apache service

Tell Apache to load configuration by running

$ sudo systemctl reload httpd

Nginx

Create virtual host configuration file in /etc/nginx/conf.d directory, for example

server {
    listen 80;
    root /home/example.fano/public;
    server_name example.fano;
    error_log /var/log/nginx/example.fano-error.log;
    access_log /var/log/nginx/example.fano-access.log;

    location / {
        try_files $uri @example.fano;
    }

    location @example.fano {
        uwsgi_pass 127.0.0.1:20477;
        include uwsgi_params;
    }
}

Change uwsgi_pass to match host and port where application is listening.

Last two location configurations tells Nginx to serve files directly if exists, otherwise pass it to our application.

Issue with firewall

In Fedora-based distribution, firewall is active by default. Read Issue with firewall for more information.

Permission issue with SELinux

Running uwsgi application through reverse proxy may be subject to strict security policy of SELinux. Read Permission issue with SELinux for more information.

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