How do I configure Apache using pip install mod_wsgi? (Invalid command 'WSGIScriptAlias')

Question

In the process of getting my Django app running in production, I became aware that apt-get mod_wsgi didn't install the correct version of mod_wsgi. And the advice was to pip install mod_wsgi in my virtual environment.

I'm running an AWS Small Ubuntu 16.04.4 LTS server and Python 3.5.

My virtual environment is /usr/local/pulseenv and contains mod-wsgi 4.6.4.

My vhost file (/etc/apache2/sites-available/000-default.conf) has:

<VirtualHost *:80>

    ServerAdmin webmaster@localhost
    #DocumentRoot /var/www/html
    DocumentRoot /var/www/pulsemanager/pulsemanager


        Alias /static /var/www/pulsemanager/pulsemanager/static
        <Directory /var/www/pulsemanager/pulsemanager/static>
            Require all granted
        </Directory>

        <Directory /var/www/pulsemanager/config>
            <Files wsgi.py>
                Require all granted
            </Files>
        </Directory>

        WSGIScriptAlias / /var/www/pulsemanager/config/wsgi.py 
        #WSGIDaemonProcess pulsemanager 
        WSGIPythonHome /usr/local/pulseenv
        WSGIPythonPath /var/www/pulsemanager
        #WSGIProcessGroup pulsemanager
        WSGIApplicationGroup %{GLOBAL}

</VirtualHost>

But when I try to start apache, I get this error:

ubuntu@ip-172-31-84-213:~$ systemctl status apache2.service
● apache2.service - LSB: Apache2 web server
   Loaded: loaded (/etc/init.d/apache2; bad; vendor preset: enabled)
  Drop-In: /lib/systemd/system/apache2.service.d
           └─apache2-systemd.conf
   Active: failed (Result: exit-code) since Fri 2018-05-04 01:35:16 UTC; 13s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 6697 ExecStart=/etc/init.d/apache2 start (code=exited, status=1/FAILURE)

May 04 01:35:16 ip-172-31-84-213 apache2[6697]:  * The apache2 configtest failed.
May 04 01:35:16 ip-172-31-84-213 apache2[6697]: Output of config test was:
May 04 01:35:16 ip-172-31-84-213 apache2[6697]: AH00526: Syntax error on line 42 of /etc/apache2/sites-enabled/000-default.conf:
May 04 01:35:16 ip-172-31-84-213 apache2[6697]: Invalid command 'WSGIScriptAlias', perhaps misspelled or defined by a module not included
May 04 01:35:16 ip-172-31-84-213 apache2[6697]: Action 'configtest' failed.
May 04 01:35:16 ip-172-31-84-213 apache2[6697]: The Apache error log may have more information.
May 04 01:35:16 ip-172-31-84-213 systemd[1]: apache2.service: Control process exited, code=exited status=1
May 04 01:35:16 ip-172-31-84-213 systemd[1]: Failed to start LSB: Apache2 web server.
May 04 01:35:16 ip-172-31-84-213 systemd[1]: apache2.service: Unit entered failed state.
May 04 01:35:16 ip-172-31-84-213 systemd[1]: apache2.service: Failed with result 'exit-code'.
lines 1-18/18 (END)

So it seems like mod_wsgi must not be found by Apache. (Is that where the WSGI* commands are?) So how do I configure Apache using pip install mod_wsgi?

Did you run mod_wsgi-express module-config and add the result into your Apache configuration? Details in section 'Connecting into Apache installation' of pypi.org/project/mod_wsgi — Graham Dumpleton
BTW, you really should use daemon mode as it is the recommended deployment method. Details on how to configure the virtual environment for that can be found in modwsgi.readthedocs.io/en/develop/user-guides/… — Graham Dumpleton
That's exactly what I needed. That problem's solved! If you put this in an answer I'll accept it. — Brad Rhoads

selvakumar selvakumar · Accepted Answer · 2018-08-07T07:28:13

The preferred way of setting up mod_wsgi is to run each WSGI application in its own daemon process group.

WSGIDaemonProcess myapp

WSGIProcessGroup myapp
WSGIApplicationGroup %{GLOBAL}

WSGIScriptAlias / /var/www/pulsemanager/config/wsgi.py 

<Directory /var/www/pulsemanager/config>
    Require all granted
</Directory>

refer:https://modwsgi.readthedocs.io/en/latest/user-guides/virtual-environments.html

How do I configure Apache using pip install mod_wsgi? (Invalid command 'WSGIScriptAlias')

1 Answers