I have created a small script for create WhiteList connected to your database, with this script you no longer need to restart your server for add someone in your WhiteList, when player try to connect, the script check if player is WhiteListed.
How-To
You can add someone in WhiteList with RCON Command or ChatCommand if you are in-game.
Example (In-Game) : /wladd steam:1100001049619D1.
Example (RCON) : wladd steam:1100001049619D1.
You can also remove someone from WhiteList with RCON Command or ChatCommand if you are in-game.
Example (In-Game) : /wlremove steam:1100001049619D1.
Example (RCON) : wlremove steam:1100001049619D1.
For use in-game commands you need to be in the “admin” group.