Script to add new users to multiple VPN services

The background: I will install multiple vpn protocols/service on a Ubuntu 16.04 x64 server using this automation script [login to view URL] The objective: I need a script preferably written in Python, bash also acceptable, that read a MySQL database periodically, retrieve its newly entered username and password, and add the username/password pair into each of the VPN or similar services in the Ubuntu server, namely: L2TP / IPsec OPenConnect / Cisco AnyConnect OpenVPN Shadowsocks sslh Stunnel The deliverables: I will provide a Ubuntu 16.04 x64 VPS for you to code and debug. I will generate test users in MySQL, and your code should be able to add them into each of the above VPN services, and I will verify them by using the VPN client to connect with each corresponding username/password. Your skills: You should be an expert in Python or bash script; You should be an Linux expert; You should be familiar with all the above VPN protocols - it will make your coding much easier.