mc-perfect/script.sh
2024-07-08 14:58:56 +02:00

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#!/bin/bash
# better to run as root
# Just to be shure
sudo apt update
sudo apt upgrade -y
# Installing depandencies
sudo apt install openjdk-17-jre-headless screen p7zip-full iptables -y
# User and groupe managment
groupadd minecraft
useradd --system --shell /usr/sbin/nologin --home /opt/minecraft -g minecraft minecraf
# File strukture and basic install
mkdir /opt/minecraft
mv Forge-1.20.1.jar /opt/minecraft/
### cd /opt/minecraft/
java -Xms512M -Xmx2048M -jar Forge-1.20.1.jar --installServer
# /opt/minecraft/run.sh # it may needs to run before copying eula. But I dont want to mess with timing
# rm eula.txt # I hope this is not needed
mv eula.txt /opt/minecraft/
# it may need to run run.sh but i dont want to >]^C
# rm -rf world/
# rm server.properties
mv server.properties /opt/minecraft/
rm run.sh
mv run.sh /opt/minecraft
mkdir /opt/minecraft/mods
7z x Mods.zip -o/opt/minecraft/mods/
# Permision handeling
chown -R minecraft:minecraft /opt/minecraft
# SystemD service
cp mc-forge.service /etc/systemd/system/
systemctl enable mc-forge
systemctl start mc-forge.service
# ipTable script integration
iptables -P INPUT ACCEPT #Clears existing rules
iptables -A INPUT -i lo -j ACCEPT #Allow loopback
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT #Allow continuing connections
iptables -A INPUT -p tcp --dport 22 --source 172.18.42.0/24 -j ACCEPT #Allow ssh from set network
iptables -A INPUT -p tcp --dport 25565 -j ACCEPT #Allow MC port
# iptables -L ### Good place to paste a manual check to not lock yourself out
iptables -P INPUT DROP #Disallow everythink else
iptables -P FORWARD DROP #Block all forwarding
iptables -P OUTPUT ACCEPT #Allow all outgouing
#### Intervention needed, after install it runs something and i dont know how to set it here
apt install iptables-persistent
iptables-save > /etc/iptables/rules.v4