Hosting a Minecraft Server on Linux

Introduction to Minecraft Server on Linux

Running a Minecraft server on Linux offers numerous advantages, including better control over server resources, enhanced security, and the ability to customize the server environment to your liking. This guide provides a detailed walkthrough on setting up a Minecraft server on a Linux system, specifically using Ubuntu 20.04.

Step 1: System Preparation and Software Installation

Before installing the Minecraft server, ensure your Linux system is up-to-date. Connect to your server via SSH and execute the following commands:

1. Update the system package list:

   sudo apt update

2. Install the necessary Java Runtime Environment (JRE) to run Minecraft. As of the latest Minecraft server requirements, OpenJDK 17 is suitable:

   sudo apt install openjdk-17-jre-headless

3. Verify the Java installation:

   java -version

Step 2: Configuring Network and Firewall Settings

The default port for Minecraft is TCP 25565. Configure your firewall to allow traffic on this port:

1. Add a rule to the Uncomplicated Firewall (UFW) to allow traffic on port 25565:

   sudo ufw allow 25565/tcp

2. Apply the firewall changes:

   sudo ufw enable

Step 3: Installing the Minecraft Server

1. Download the Minecraft server software from the official Minecraft website. Replace YOUR_DOWNLOAD_URL with the actual download URL for the latest Minecraft server version:

   wget -O minecraft_server.jar YOUR_DOWNLOAD_URL

2. Start the Minecraft server to generate initial configuration files:

   java -Xms1024M -Xmx2048M -jar minecraft_server.jar nogui

Step 4: Initial Configuration and EULA Agreement

After the first launch, the server will stop and prompt for EULA agreement.

1. Edit the eula.txt file generated in the server directory:

   nano eula.txt

2. Change eula=false to eula=true to indicate your agreement with the Minecraft EULA.

Step 5: Fine-Tuning Server Properties

Configure the server to your preferences:

1. Open the server.properties file:

   nano server.properties

2. Modify settings such as game mode, difficulty, and world type to customize your server experience.

Step 6: Running the Minecraft Server

Start the Minecraft server with the adjusted memory settings and configurations:

java -Xms1024M -Xmx2048M -jar minecraft_server.jar nogui

Monitor the server output for any issues and confirm that it starts successfully.

Step 7: Maintaining Server Uptime

To keep the server running after disconnecting from the SSH session, use a tool like screen or tmux.

1. Start a new screen session:

   screen -S minecraft

2. Run the Minecraft server inside the screen session:

   java -Xms1024M -Xmx2048M -jar minecraft_server.jar nogui

3. Detach from the screen session with the keyboard shortcut Ctrl+A then D.

Step 8: Connecting to Your Minecraft Server

To play on your server, open Minecraft, select Multiplayer, and enter your server’s IP address and port.

Optimizing Server Performance

Regularly update your server and monitor its performance. Use tools like htop to check resource usage and adjust the server’s memory allocation (Xms and Xmx parameters) as needed.

Conclusion

Setting up a Minecraft server on Linux is a straightforward process that offers flexibility and control. By following the above steps, you can create a stable and customized Minecraft environment for you and your players to enjoy. Regular maintenance and updates will ensure your server remains secure and performs well.