Locate the server.properties or config folder. You must edit these text files to match your environment:
You can't kill a goblin without a database.
This is the most critical step. You generally have two paths:
Essential Files:
Directly edit the .properties files and restart the server for simple rate changes.
For granular control (e.g., "Mob X drops Item Y at Z%"), edit the droplist table in the database. Each row maps a mob ID to an item ID with a probability (max 1,000,000 = 100%).
SSH into your VPS as root (or a user with sudo) and run:
sudo apt update && sudo apt upgrade -y
sudo apt install openjdk-11-jdk git mariadb-server mariadb-client wget unzip make gcc -y
Verify Java installation:
java -version
You should see openjdk version "11.0.xx".