Minecraft init script

minecraft.sh

#!/bin/bash

### BEGIN INIT INFO
# Provides:   minecraft
# Required-Start: $local_fs $remote_fs
# Required-Stop:  $local_fs $remote_fs
# Should-Start:   $network
# Should-Stop:    $network
# Default-Start:  2 3 4 5
# Default-Stop:   0 1 6
# Short-Description:    Minecraft init script
# Description:		This is a start up script for minecraft_server.jar server.
### END INIT INFO

### LSBise: http://wiki.debian.org/LSBInitScripts
### ADD ERROR HANDLING ###
### USE /lib/lsb/init-functions TO DISPLAY "Starting Minecraft server... [fail]" MESSAGE WHEN start_minecraft() FAILS (e.g., minecraft is already running, thus logically the start_minecraft() should fail)
### MAKE SURE TO REDIRECT ERRORS TO STDERR
### CREATE A COLORIZE FUNCTION WITH THE FOLLOWING USAGE: colorize_heredoc_text("string of $TEXT") --color red

PATH=/sbin:/bin:/usr/bin/:/usr/local/bin
# Please set the following variables and test this script before you install it.
MINECRAFT_USER=minecraft
MINE_PATH=/home/minecraft/DbyZ
MINE_BACKUP_PATH=/home/minecraft/DbyZ-Incremental

. /lib/lsb/init-functions

ME=`whoami`

TERM_MULTIPLEXER=tmux
if [ "$ME" != "$MINECRAFT_USER" ]
then
	SESSION_INFO_CMD=`sudo -u $MINECRAFT_USER tmux list-sessions 2>&1`
else
	SESSION_INFO_CMD=`tmux list-sessions 2>&1`
fi
GET_SESSION="tmux list-sessions"
CONNECT_CMD="tmux a -t ${SESSION_INFO_CMD::1}"
START_SESSION_CMD="tmux new -d -s minecraft"
#START_MINECRAFT_CMD="java -server -XX:+UseConcMarkSweepGC -Xms4096m -Xmx8192m -Xmn768m -jar forge-1.6.4-965.jar nogui"
START_MINECRAFT_CMD="java -server -XX:+UseLargePages -XX:+UseConcMarkSweepGC -Xms4096m -Xmx7002m -Xmn768m -jar forge-1.6.4-965.jar nogui"
SENDKEYS_CMD="tmux send-keys -t minecraft `printf 'stop\r'`"
SEND_CMD="tmux send-keys -t minecraft"
SENDKEYS_CMD_SAVE_OFF="tmux send-keys -t minecraft `printf 'save-off\r'`"
SENDKEYS_CMD_SAVE_ALL="tmux send-keys -t minecraft `printf 'save-all\r'`"
SENDKEYS_CMD_SAVE_ON="tmux send-keys -t minecraft `printf 'save-on\r'`"
DETACH_KEYS="Ctrl-b d"

start_minecraft()
{
        if [ "$ME" != "$MINECRAFT_USER" ]
        then
		cd $MINE_PATH && sudo -u $MINECRAFT_USER $START_SESSION_CMD "$START_MINECRAFT_CMD"
        else
		cd $MINE_PATH && $START_SESSION_CMD "$START_MINECRAFT_CMD"
        fi
}
stop_minecraft()
{
        if [ "$ME" != "$MINECRAFT_USER" ]
        then
		sudo -u $MINECRAFT_USER $SENDKEYS_CMD
        else
		$SENDKEYS_CMD
        fi
}
status_minecraft()
{
	###############
	ps auxww | grep -iEq "tmux.*[m]inecraft"
	EXITVAL=$?
	if [ "$ME" != "$MINECRAFT_USER" ]
        then
        	SESSION_INFO=`sudo -u $MINECRAFT_USER $GET_SESSION 2>&1`
        else
        	SESSION_INFO=`$GET_SESSION 2>&1`
        fi
	return $EXITVAL
}

save_off()
{
        if [ "$ME" != "$MINECRAFT_USER" ]
        then
		sudo -u $MINECRAFT_USER $SEND_CMD 'say Starting Backup - World going Read-Only!' C-m
		sudo -u $MINECRAFT_USER $SENDKEYS_CMD_SAVE_OFF
		sudo -u $MINECRAFT_USER $SENDKEYS_CMD_SAVE_ALL
        else
		$SEND_CMD 'say Starting Backup - World going Read-Only!' C-m
		$SENDKEYS_CMD_SAVE_OFF
		$SENDKEYS_CMD_SAVE_ALL
        fi
}

save_on()
{
        if [ "$ME" != "$MINECRAFT_USER" ]
        then
		sudo -u $MINECRAFT_USER $SENDKEYS_CMD_SAVE_ON
		sudo -u $MINECRAFT_USER $SEND_CMD 'say Backup Complete!' C-m
        else
		$SENDKEYS_CMD_SAVE_ON
		$SEND_CMD 'say Backup Complete!' C-m
        fi
}

full_backup(){
	save_off
	if [ "$ME" != "$MINECRAFT_USER" ]
        then
		sudo -u $MINECRAFT_USER tar czf $MINE_BACKUP_PATH/fullbackup.tar.gz $MINE_PATH > /dev/null 2>&1
	else
		tar czf $MINE_BACKUP_PATH/fullbackup.tar.gz $MINE_PATH > /dev/null 2>&1
	fi
	save_off

}

rdiff_backup(){
	DATE=$(date +%Y-%m-%d-%H)

        if [ "$ME" != "$MINECRAFT_USER" ]
       	then
		sudo -u $MINECRAFT_USER cp  $MINE_PATH/server.log $MINE_PATH/logs/server-$DATE.log 
		sleep 1
		cat /dev/null | sudo -u $MINECRAFT_USER tee $MINE_PATH/server.log

		save_off
		sudo -u $MINECRAFT_USER nice -n 10 rdiff-backup --print-statistics $MINE_PATH $MINE_BACKUP_PATH/backups > $MINE_BACKUP_PATH/logs/$DATE-$server-backup.log
		sudo -u $MINECRAFT_USER rdiff-backup --force --remove-older-than 48B $MINE_BACKUP_PATH/backups  
		save_on
	else
		cp  $MINE_PATH/server.log $MINE_PATH/logs/server-$DATE.log 
		sleep 1
		cat /dev/null > $MINE_PATH/server.log

		save_off
		nice -n 10 rdiff-backup --print-statistics $MINE_PATH $MINE_BACKUP_PATH/backups > $MINE_BACKUP_PATH/logs/$DATE-$server-backup.log
		rdiff-backup --force --remove-older-than 48B $MINE_BACKUP_PATH/backups  
		save_on
	fi
}

backup_list(){
        if [ "$ME" != "$MINECRAFT_USER" ]
        then
		sudo -u $MINECRAFT_USER rdiff-backup -l $MINE_BACKUP_PATH/backups
		sudo -u $MINECRAFT_USER rdiff-backup --list-increment-sizes $MINE_BACKUP_PATH/backups
	else
		rdiff-backup -l $MINE_BACKUP_PATH/backups
		rdiff-backup --list-increment-sizes $MINE_BACKUP_PATH/backups

	fi
}

case "$1" in
  start)
	log_begin_msg "Starting Minecraft server..."
	status_minecraft && echo -n "ERROR: Minecraft already appears to be running." || start_minecraft
	log_end_msg 0
	;;
  stop)
	log_begin_msg "Stopping Minecraft server..."
	stop_minecraft
	log_end_msg 0
	;;
  status)
	status_minecraft
	if [ -e $MINE_PATH/ForgeModLoader-server-0.log.lck ] && [ "$EXITVAL" -eq "0" ]; then
	        if [ "$ME" != "$MINECRAFT_USER" ]
        	then
			cat <<- -EOF-
			Minecraft appears to be running...

			`echo -e "\033[22;32m"`*`tput sgr0`$TERM_MULTIPLEXER session info: `echo -e "\033[22;32m"`$SESSION_INFO`tput sgr0`
			`echo -e "\033[22;32m"`*`tput sgr0`To connect to the $TERM_MULTIPLEXER(1) session and administrate the minecraft server, do the following: `echo -e "\033[22;33m"`sudo -u $MINECRAFT_USER $CONNECT_CMD`tput sgr0`
			`echo -e "\033[22;32m"`*`tput sgr0`When finished, detach from the session with the following keystrokes: `echo -e "\033[22;34m"`$DETACH_KEYS`tput sgr0`.
			-EOF-
			exit 0
	        else
			cat <<- -EOF-
			Minecraft appears to be running...

			`echo -e "\033[22;32m"`*`tput sgr0`$TERM_MULTIPLEXER session info: `echo -e "\033[22;32m"`$SESSION_INFO`tput sgr0`
			`echo -e "\033[22;32m"`*`tput sgr0`To connect to the $TERM_MULTIPLEXER(1) session and administrate the minecraft server, do the following: `echo -e "\033[22;33m"`$CONNECT_CMD`tput sgr0`
			`echo -e "\033[22;32m"`*`tput sgr0`When finished, detach from the session with the following keystrokes: `echo -e "\033[22;34m"`$DETACH_KEYS`tput sgr0`.
			-EOF-
			exit 0
	        fi

	else
		cat <<- -EOF-
		Minecraft does not appear to be running...

		`echo -e "\033[22;31m"`*`tput sgr0`$TERM_MULTIPLEXER session information: `echo -e "\033[22;31m"`$SESSION_INFO`tput sgr0`
		-EOF-
		exit 1
	fi
	;;
  restart)
	log_begin_msg "Restarting Minecraft server..."
	stop_minecraft
	sleep 2
	start_minecraft
	log_end_msg 0
	;;
  timed-restart)
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 5 minutes' C-m 
	sleep 1m
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 4 minutes' C-m
	sleep 1m
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 3 minutes' C-m
	sleep 1m
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 2 minutes' C-m
	sleep 1m
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 1 minutes' C-m
	sleep 30s
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 30 seconds' C-m
	sleep 20s
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 10 seconds' C-m
	sleep 1s
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 9 seconds' C-m
	sleep 1s
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 8 seconds' C-m
	sleep 1s
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 7 seconds' C-m
	sleep 1s
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 6 seconds' C-m
	sleep 1s
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 5 seconds' C-m
	sleep 1s
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 4 seconds' C-m
	sleep 1s
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 3 seconds' C-m
	sleep 1s
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 2 seconds' C-m
	sleep 1s
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server in 1 seconds' C-m
	sleep 1s
	sudo -u $MINECRAFT_USER $SEND_CMD 'say Restarting Minecraft server...' C-m
	stop_minecraft
	sleep 10s
	start_minecraft
	log_end_msg 0
	;;
  save-off)
        log_begin_msg "Disabling save on MC Server..."
        save_off
        log_end_msg 0
        ;;
  save-on)
        log_begin_msg "Enabling save on MC Server..."
        save_on
        log_end_msg 0
        ;;
  backup)
        log_begin_msg "Backing up..."
        rdiff_backup
        log_end_msg 0
        ;;  
  full-backup)
        log_begin_msg "Backing up..."
        full_backup
        log_end_msg 0
        ;;  
  list-backup)
        log_begin_msg "Listing Backups..."
        backup_list "${2}"
        log_end_msg 0
        ;;  

  *)
	echo "Usage: $0 start|stop|status|restart|timed-restart|save-off|save-on|backup|list-backup|full-backup" >&2
	exit 3
	;;
esac

exit 0

Note that this requires hugepages to be enabled on the server to work. Swap the two "START_MINECRAFT_CMD" if you hugepages isn't enabled.