Automating Minecraft Server Restarts Made Easy A Easy Solution

Running a Minecraft server comes with its fair share of challenges, and one of the most frustrating ones is dealing with unexpected crashes. These crashes can disrupt gameplay and leave both server administrators and players feeling frustrated. Fortunately, we've got you covered! In this blog post, we'll introduce you to a powerful and user-friendly bash script that automates the process of restarting your Minecraft server after a crash, ensuring smooth gameplay and uninterrupted fun for everyone involved.

Introducing the Minecraft Server Restart Script:

Gone are the days of manually monitoring and restarting your Minecraft server. Our bash script simplifies the entire process, allowing you to sit back and relax while the script takes care of everything. Let's dive into the details of how it works.

The Script in Action:

Our script starts with a few essential variables that you can customize to fit your server's specifications. These variables include the server JAR file name, maximum and minimum allocated RAM, and the time delay before the server restarts.

Here's the code for the script:

#!/bin/bash

JAR=server.jar
MAXRAM=15G
MINRAM=15G
TIME=20


while [ true ]; do
	java -Xmx$MAXRAM -Xms$MINRAM -jar $JAR nogui
	if [[ ! -d "exit_codes" ]]; then
		mkdir "exit_codes";
	fi
	if [[ ! -f "exit_codes/server_exit_codes.log" ]]; then
		touch "exit_codes/server_exit_codes.log";
	fi
	echo "[$(date +"%d.%m.%Y %T")] ExitCode: $?" >> exit_codes/server_exit_codes.log
	echo "----- Press enter to prevent the server from restarting in $TIME seconds -----";
        read -t $TIME input;
															        if [ $? == 0 ]; then
                break;
        else
	        echo "------------------- SERVER RESTARTS -------------------";
	fi
done

Understanding the Code: Let's break down the script to understand how it works:

  1. Variable Setup:
    • JAR: Specifies the filename of the Minecraft server JAR file.
    • MAXRAM: Sets the maximum amount of RAM allocated to the server.
    • MINRAM: Sets the minimum amount of RAM allocated to the server.
    • TIME: Defines the time in seconds before the server restarts after a crash.
  2. Main Loop: The script contains a while loop that ensures the Minecraft server keeps running continuously. Here's how it works:
    • The loop starts with the condition "[ true ]", meaning it will run indefinitely until manually interrupted.
    • Inside the loop, the "java" command is used to start the server with the specified RAM allocation.
    • If the server crashes, the script proceeds to the next set of commands.
    • A directory named "exit_codes" is created if it doesn't already exist.
    • A log file named "server_exit_codes.log" is created within the "exit_codes" directory if it doesn't exist.
    • Information about the crash, including the date, time, and exit code, is appended to the log file.
    • The script then prompts the user to press the Enter key within the specified time (in seconds) to prevent an immediate restart.
    • If the user presses Enter, the script breaks out of the loop, effectively stopping the automatic restart.
    • If the user does not press Enter within the specified time, the script continues to the next iteration, triggering a server restart.

Conclusion:

With our user-friendly bash script, automating Minecraft server restarts has never been easier. Say goodbye to the frustration of crashed servers and hello to uninterrupted gameplay for you and your players. Our script provides a reliable and efficient solution, allowing you to focus on enjoying the Minecraft experience rather than worrying about server stability.

To get started, simply save the script with a meaningful name, grant it executable permissions using chmod +x minecraft_server_restart.sh, and run it within your server's directory using ./minecraft_server_restart.sh. Sit back, relax, and let the script handle the rest.

Note: As with any server automation, it's always essential to periodically review the log file for recurring issues and address any underlying causes for a more stable Minecraft server.

Disclaimer: This script is provided as a community contribution, and we recommend thoroughly testing it in your specific server environment before deploying it to a live server. Always keep backups of your Minecraft server and configuration files to ensure the safety of your data.

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