[uWSGI] Shell command fails under uwsgi

Shareef Jalloq shareef at jalloq.co.uk
Tue Dec 3 15:20:59 UTC 2019


So I managed to debug this a bit more and it looks like uWSGI itself is
fine as I can run it directly, but either my nginx or service is causing
the issue.

My service looks like:

[Unit]
Description=uWSGI instance to serve flexlm
After=network.target

[Service]
User=shareef
Group=nginx
WorkingDirectory=/home/shareef/html/flexlm
Environment="PATH=/home/shareef/html/flexlm/venv/bin"
ExecStart=/home/shareef/html/flexlm/venv/bin/uwsgi --ini
/home/shareef/html/flexlm/flexlm.ini

[Install]
WantedBy=multi-user.target


and my nginx config looks like:

    server {
      listen 80;
  server_name flexlm.me.com ;

  location / {
  include uwsgi_params ;
uwsgi_pass unix:/home/shareef/html/flexlm/flexlm.sock;
 }
    }

On Tue, Dec 3, 2019 at 12:22 PM Shareef Jalloq <shareef at jalloq.co.uk> wrote:

> Hi there,
>
> new user here and I've been trying to set up a Flask app using the
> tutorial here:
> https://www.digitalocean.com/community/tutorials/how-to-serve-flask-applications-with-uwsgi-and-nginx-on-centos-7
>
> The Flask app just runs a Python script and I render a page with the
> output.  The script calls the FlexLM lmstat command line utility and gets a
> list of license features in use.
>
> I can run the Flask app in standalone mode using 'flask run', but if I try
> to run the uwsgi app, I get a file not found error from lmstat itself.  If
> I copy the shell command my script is running and run that in a shell, I
> get the correct output it's not a typo in my setup.  If I update my script
> to read the license files then it also opens them with no issues.
>
> So what is it about running shell commands under uwsgi/nginx that could
> cause this symptom?  I've modified permissions to make the license file
> readable by all so I don't think it's permissions.  Bit stuck as to what to
> check next.  uwsgi.ini follows.
>
> Shareef.
>
>
> [uwsgi]
> module = wsgi
>
> master = true
> processes = 5
> logto = /tmp/flexlm.log
> socket = flexlm.sock
> chmod-socket = 666
> vacuum = true
>
> die-on-term = true
>
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