WSGI Application in Apache
--------------------------

Install `apache2` and `libapache2-mod-wsgi`

We'll set up the server at URL `http://myhost.com/nilmrun`.  The
process will run as user `nilm`, group `nilm`.

First, create a WSGI script `/home/nilm/nilmrun.wsgi` containing:

    import nilmrun.server
    application = nilmrun.server.wsgi_application("/nilmrun")

The first parameter is the path part of the URL.

Then, set up Apache with a configuration like below.  SSL and access
control/authentication are strongly recommended since this can execute
arbitrary commands.

    <VirtualHost *:443>
        SSLEngine On

        WSGIScriptAlias /nilmrun /home/nilm/nilmrun.wsgi
        WSGIApplicationGroup nilmrun-appgroup
        WSGIProcessGroup nilmrun-procgroup
        WSGIDaemonProcess nilmrun-procgroup threads=32 user=nilm group=nilm

        # Access control example:
        <Location /nilmrun>
            SSLRequireSSL
            Order deny,allow
            Deny from all
            Allow from 1.2.3.4
        </Location>
    </VirtualHost>