Need to use MariaDB for openvpn server

The server is already installed, working, clients are manually created at this time. I need to accomplish the following. -Ability to add/remove clients including their certs using MariaDB. Certs must be extractable as [login to view URL] -Need to measure data usage and highest bandwidth used. If you have never done this work before, please do not bid and learn on the job. I need someone that fully understands this and it could lead to a lot more work. Mainly, we just need you to consult, no direct access needed.