Minecraft service and helper scripts for running a vanilla Minecraft server. Greatly inspired/copied by: http://wellsie.net/p/349/

README.md

#Minecraft Server Service

Minecraft service and helper scripts for running a vanilla Minecraft server. Greatly inspired/copied by: http://wellsie.net/p/349/

---

Create a minecraft service user

sudo adduser --system --group --shell /bin/bash minecraft

Switch to the new minecraft user

sudo su minecraft

Drop run_bakup.sh into /home/minecraft/ and chmod u+x /home/minecraft/run_backup.sh

Make the backup dir

mkdir backups

Install the backup cron crontab -e

@hourly /home/minecraft/run_backup.sh > /home/minecraft/last_backup_log.txt

Make the minecraft server dir and cd into it

mkdir minecraft_server && cd $_

Download the minecraft server jar. All scripts in this gist expect the jar to be labled minecraft_server.1.8.9.jar. Should prob symlink this later, but whatever, pull the jar down. wget https://s3.amazonaws.com/Minecraft.Download/versions/1.8.9/minecraft_server.1.8.9.jar

If you want your current user to be able to play with server files, run the next 3 commands

1. Make everything easier and let the group play with everything

cd .. && chown -R minecraft:minecraft . && chmod -R g=u .

2. logout of the minecraft user

exit

3. If you want to make life easier, add yourself to the minecraft group

sudo usermod -a -G minecraft $(whoami)

else

logout of the minecraft user

exit

put minecraft_shell.sh into your home dir. Make it executable chmod u+x ~/minecraft_shell.sh

When you run ./minecraft_shell.sh you must do it as sudo. Once youre in the screen, press Ctrl+a d to detatch/exit.

put minecraft.conf in /etc/init/ and set it to executable chmod u+x /etc/init/minecraft.conf

Start the server

sudo service minecraft start

TODO: could probably make this an auto-install script.

minecraft.conf

#upstart job for minecraft server
start on (local-filesystems and net-device-up IFACE!=lo)
stop on runlevel [016]

chdir /home/minecraft/minecraft_server

# we did have -Xincgc but I think that's super aggresive gc and we don't need that
script
	echo $$ > /var/run/minecraft.pid
	exec su minecraft -c "screen -DmS minecraft java -Xms1024M -Xmx3072M -jar minecraft_server.1.8.9.jar nogui"
end script

pre-start script
    echo >> server.log
    cat server.log >> server.archive.log
    rm server.log
end script

pre-stop script
        # this carriage return prob wont copy correctly. Immediately after 'stop press ctrl+v then [enter]. This will insert a return char.
	su minecraft -c "screen -d -r minecraft -X stuff 'stop
'"
	sleep 10
end script

post-stop script
	rm /var/run/minecraft.pid
end script

minecraft_shell.sh

#!/bin/bash
screen -r minecraft/minecraft

run_backup.sh

#!/bin/bash

if [ "$(whoami)" != "minecraft" ]; then
	echo "You must run this script as minecraft user"
	exit
fi

cd /home/minecraft

toscreen () {
	screen -d -r minecraft -X stuff "$1$(echo -ne '\r')"
}


echo "Starting backup procedure: $(date)"
toscreen "say ** Starting Backup! Brace for lag."

# remove old backups
echo "Removing old backups"
rdiff-backup --remove-older-than 7D --force backups

# turn off saving so backup is consistent
toscreen "save-off"

# do the backup
echo "Doing the backup"
rdiff-backup minecraft_server backups

# turn saving back on
toscreen "save-on"
toscreen "say ** Backup done!"
echo "Backup complete"