Tutorial how to run CraftBukkit on linux server with automatic backup and restart

Saturday, 02 April 2011 21:51 Last Updated on Sunday, 21 August 2011 12:27 Written by VladoPortos 9 Comments

Hello All,

Some script we use on Mineserver.sk

Purpose:

To run CB on linux server ( I use ubuntu ) in screen mode so you can log off and it will go on.

To have full backup of your map every day. ( this save me a lot .. )

To have automatic restart daily for stability purpose.

Setting of CB will not be covered as this can be easily find on its homepage..

Note*

my directory where bukkit binary is, is: /var/minecraft/bukkit/

I use two start scripts.

1: bukkit_start.sh <--- This one start the nogui

1 2	#!/bin/sh java -Xincgc -Xmx4G -jar craftbukkit-0.0.1-SNAPSHOT.jar nogui

2: start.sh <--- this one take care of running it in screen

1 2	#!/bin/bash screen -S minecraft -t world -d -m /var/minecraft/bukkit/bukkit_start.sh

Parameters for screen are important we use them to pass commands to game console with script..

My backup script:

backup.sh

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#!/bin/bash
# Minecraft AutoBackup
NOW=$(date +"%d-%m-%Y")
i=$(date +"%Hh%Mm%Ss")
cd /var/minecraft/bukkit/

if [ -e server.log.lck ] #check if server is running
then #Inform players that backup started
screen -S minecraft -p world -X stuff "say ###Auto Backup - Started###"`echo -ne '\015'`
screen -S minecraft -p world -X stuff "save-off"`echo -ne '\015'`
screen -S minecraft -p world -X stuff "save-all"`echo -ne '\015'`
sleep 5
tar -czf /var/minecraft/bukkit/backup/Svet_MineCraftu-$NOW-$i.tar.gz /var/minecraft/bukkit/Svet_MineCraftu #/var/minecraft/bukkit/backup/ is where is my backup located and Svet_MineCraftu is name of map
screen -S minecraft -p world -X stuff "save-on"`echo -ne '\015'`
screen -S minecraft -p world -X stuff "say ###Auto Backup - Done###"`echo -ne '\015'`
find /var/minecraft/bukkit/backup/ -mmin +2880 -exec rm {} \; #remove backups older than 2days
fi

Restart script

restart.sh <-- will restart server with 1min info in advance for players

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#!/bin/bash
# Minecraft AutoRestart

cd /var/minecraft/bukkit/
screen -S minecraft -p world -X stuff "say ###Auto Restart - Zacina###"`echo -ne '\015'`
screen -S minecraft -p world -X stuff "say # Restart za 1 Minutu!"`echo -ne '\015'`
sleep 50
screen -S minecraft -p world -X stuff "say # Restart za 10 Sekund!"`echo -ne '\015'`
sleep 5
screen -S minecraft -p world -X stuff "say # Restart za 5 Sekun! Uz by ste sa mali odpojit !"`echo -ne '\015'`
screen -S minecraft -p world -X stuff "save-all"`echo -ne '\015'`
sleep 5
screen -S minecraft -p world -X stuff "stop"`echo -ne '\015'`
sleep 5
screen -S minecraft -t world -d -m /var/minecraft/bukkit/bukkit_start.sh
sleep 5
screen -S minecraft -X stuff "say ###Auto Restart - Skoncil###"`echo -ne '\015'`

Check script if server is running or not ( do not detect hanged server yet… )

check.sh

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#!/bin/sh
cd /var/minecraft/bukkit/
if [ -e server.log.lck ]
then
echo "Server is running !"
else
echo "Server is down !"
screen -S minecraft -t world -d -m /var/minecraft/bukkit/bukkit_start.sh
NOW=$(date +"%b-%d-%y %H:%M")
echo '[' $NOW ']: Server was down.... Started !' >> /var/minecraft/bukkit/logs/ServerCheck.log
fi

And how it is tight up all together in cron ?

Cron:

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## minecraft maintanance scripts
#This backs up the server at 3:35am every morning.
35 3 * * * cd /var/minecraft/bukkit && ./backup.sh > /dev/null 2>&1
#This restarts the server at 3:40am every morning.
40 3 * * * cd /var/minecraft/bukkit && ./restart.sh > /dev/null 2>&1
#Check if server is running every 30min and if not, will start it
*/30 * * * * cd /var/minecraft/bukkit && ./check.sh > /dev/null 2>&1

Maybe it can be helpful to somebody…

Tags: automatic backup, backup, bukkit, craftbukkit, howto, Linux, Map, minecraft server, mineserver, mode, multiplayer, restart, screen, screen mode, scripts, servers, SMP, stability, tutorial, Ubuntu