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###Installation of a Minecraft Server on Ubuntu

Ubuntu Server

This will be installed on sootsplash.csci2461.com, a server hosted by Digital Ocean.

###Login to your server

Via using ssh: ssh useraccount@sootsplash.csci2461.com

Download Java

Minecraft requires Java to run. We will download the latest Oracle Java. We will change to the /opt directory, use wget to download and accept Oracle agreements and then extract contents to the opt folder. The following command will help us;

  • cd /opt
  • wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u161-b12/2f38c3b165be4555a1fa6e98c45e0808/jdk-8u161-linux-x64.tar.gz
  • tar -zxvf jdk-8u161-linux-x64.tar.gz

Configuration of Java

We will configure the Java environment to permit our our system access the java binary and compiler necessary in building our minecraft server. We will use the following commands;

  • sudo update-alternatives --install /usr/bin/java java /opt/jdk1.8.0_161/bin/java 1
  • sudo update-alternatives --install /usr/bin/javac javac /opt/jdk1.8.0_161/bin/javac 1

We will then set this java version as the default versions. Select the right version option.

  • sudo update-alternatives --config java
  • sudo update-alternatives --config javac

We will then check our java version

  • java -version
  • javac -version

Setting Up Minecraft environment

Lets update and upgrade our system

  • sudo apt-get update && sudo apt-get -y upgrade Install git
  • sudo apt-get install git

Lets install screen to assist us run the minecraft server console while logged out of pi.

  • sudo apt-get install screen

Installing Minecraft

We will install the Spigot Minecraft Server build. Lets create a folder

cd /opt

sudo mkdir minecraft

cd minecraft

We will download the buildtools

  • wget https://hub.spigotmc.org/jenkins/job/BuildTools/lastSuccessfulBuild/artifact/target/BuildTools.jar

Then build our server. This compilation process takes close to 45 minutes on this server.

  • sudo java -jar BuildTools.jar --rev 1.12.2

Configuring the Spigot server

Once the compilation is completewe should ensure we are in the minecraft directory and run the server for the first time.

  • sudo java -Xms1024M -Xmx2048M -jar /opt/minecraft/spigot-1.12.2.jar nogui

Xms1024M and Xms2048M are parameters telling java to start with 1GB of ram as a minimum for the spigot jar file and grow to 2GB maximum. We will then accept the EULA agreement after the server stops running.

  • sudo nano eula.txt

Inside the eula.txt, change the line eula=false to _eula=true_

Let us now change the server properties

  • sudo nano server.properties

The following properties are recommended for a start, but you can change server.properties following its Wiki.

  • Minecraft server properties
  • spawn-protection=16
  • generator-settings=
  • force-gamemode=true
  • allow-nether=true
  • gamemode=0
  • enable-query=false
  • player-idle-timeout=0
  • difficulty=2
  • spawn-monsters=true
  • op-permission-level=4
  • announce-player-achievements=true
  • pvp=true
  • snooper-enabled=true
  • level-type=DEFAULT
  • hardcore=false
  • enable-command-block=false
  • max-players=10
  • network-compression-threshold=256
  • resource-pack-sha1=
  • max-world-size=29999984
  • server-port=25565
  • debug=false
  • server-ip=
  • spawn-npcs=true
  • allow-flight=false
  • level-name=world
  • view-distance=10
  • resource-pack=
  • spawn-animals=true
  • white-list=false
  • generate-structures=true
  • online-mode=true
  • max-build-height=256
  • level-seed=
  • prevent-proxy-connections=false
  • use-native-transport=true
  • motd=My Minecraft Server
  • enable-rcon=false

Now lets rerun our server sudo java -Xms1024M -Xmx2048M -jar /opt/minecraft/spigot-1.12.2.jar nogui

Script to Run server

Lets make the minecraft server to run from a script.

  • cd /opt && sudo mkdir scripts
    • cd scripts
    • nano minecraft.sh Inside our minecraft.sh, we will add the following scripts.

#!/bin/bash

cd /opt/minecraft/ && sudo java -Xms1024M -Xmx2048M -jar /opt/minecraft/spigot-1.12.2.jar nogui

We will save the file and make it executable

  • chmod u+x minecraft.sh Lets start the server
  • screen <---hit enter at the message that appears.
  • sudo /opt/scripts/minecraft.sh

To exit the screen session hit CTRL AD

Configure Minecraft to start on bootup

We will edit the /etc/rc.local file

  • sudo nano /etc/rc.local

Insert the following before the last line exit 0

  • screen -dm -S minecraft /opt/scripts/minecraft.sh

After bootup the following can be run

  • sudo screen -r minecraft

Creating Backup

This will permit restoring the minecraft server

  • cd /opt
  • tar -zcvf minecraft_backup.tar.gz minecraft

We can now copy this zip file to a safe location or server. Restoration should be done regularly considering we have to entertain others and their achievements. This is the area which needs technical support in great details.