OpenVPN setup with domain wise logging -- 2

Job ID: 30658489

Budget: ₹1,500 – ₹12,500 INR

I have installed OpenVPN in my network using a Github script. I want to setup logging for that such that I can monitor the data usage (downloads/uploads) of my users domain wise. I need help in setting it up. Help required.
Related categories: Python System Admin Shell Script Ubuntu OpenVPN