Setup:

Create system user 'ipipet':

    sudo adduser --system --group --no-create-home ipipet

Create directories for ipipet:

    sudo mkdir /var/{run,log}/ipipet
    sudo chown ipipet:ipipet /var/{run,log}/ipipet
    sudo chmod 0755 /var/{run,log}/ipipet

The run the flask app with gunicorn as user ipipet:

    sudo ./pooling.sh start