linux:software:host_minecraft_server [Eureka Moment]

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====== Host your own Minecraft server ======
<code bash Installation procedure>
# Update package list and install Java
sudo apt-get update
sudo apt install default-jre-headless

#check if Java is installed
Java -version

#create unprivileged user
sudo useradd -r -U -d /usr/local/games/minecraft_server/ -s /usr/sbin/nologin minecraft
sudo mkdir -p /usr/local/games/minecraft_server/Java
sudo chown -R minecraft: /usr/local/games/minecraft_server/

# Impersonate that user
sudo su - minecraft -s /bin/bash
cd /usr/local/games/minecraft_server/Java

# Download server and run it for the first time
wget https://piston-data.mojang.com/v1/objects/8dd1a28015f51b1803213892b50b7b4fc76e594d/server.jar
Java -Xmx1024M -Xms1024M -jar server.jar nogui

# Accept EULA and run server
sed -i 's/\bfalse\b/TRUE/' eula.txt
Java -Xmx1024M -Xms1024M -jar server.jar nogui
</code>

This has the problem of exiting when SSH is disconnected, so the best way is to start it in Screen
<code bash>
sudo apt install screen -y
screen -S mc_Java_server -dm Java -Xmx1024M -Xms1024M -jar server.jar nogui
</code>

====== System resources ======
^ Requirements  ^ Players  ^ CPU                                     ^ RAM  ^ Storage                         ^ WAN Up   ^ WAN Down ^
^ Minimum       | 1-4      | Intel Core 2 Duo or AMD Athlon 64 x2    | 1GB  | At least 150MB for world saves  | 3Mbit/s  | 2 Mbit/s |
^ Recomended    | 5-10     | Intel Core 2 Duo or AMD Athlon 64 x2    | 2GB  | At least 200MB for world saves  | 6Mbit/s  | 3 Mbit/s |
^ Best          | 10+      | Intel Core i5-4690 or AMD Ryzen 5 1600  | 4GB  | At least 200MB SSD              | 14Mbit/s | 8 Mbit/s |