Help Debug Server error?

Hey guys,

My server specs are in my sig. I was wondering if you guys can give me some advice / help tracking down what is causing this error. It seems my ram usage is fine but my CPU starts jumping around.
I get:

"[WARNING] Can't keep up! Did the system time change, or is the server overloaded?"

Is there any plugin monitoring to see what plugin ( if its a plugin ) is going crazy?

Thanks for any advice.

 

What is in your start.sh?

 

I am using this guys startup script [1]. It seemed like a good script.

1 - http://www.minecraftforum.net/topic/121830-multi-world-linux-minecraft-server-control-script/

Code:

#! /bin/sh
### BEGIN INIT INFO
# Provides:          minecraft_server
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Minecraft Server control script.
# Description:       Minecraft Server control script.
#   Options
#     start <world>          - Start the Minecraft world server.  Starts all world servers by default.
#     stop <world>           - Stop the Minecraft world server.  Stops all world servers by default.
#     force-stop <world>     - Forcibly stop the Minecraft world server.  Forcibly stops all world servers by default.
#     restart <world>        - Restart the Minecraft world server.  Restarts all world servers by default.
#     force-restart <world>  - Forcibly restart the Minecraft world server.  Forcibly restarts all world servers by default.
#     status <world>         - Display the status of the Minecraft world server.  Displays the status of all world servers by default.
#     send <world> <command> - Send a command to a Minecraft world server.
#     screen <world>         - Display the Screen for the Minecraft world server.
#     watch <world>          - Watch the log file for the Minecraft world server.
#     backup <world>         - Backup the Minecraft world.  Backup all worlds by default.
#     c10t <world>           - Run the c10t mapping software on the Minecraft world.  Maps all worlds by default.
#     update <software>      - Update a software package.  Update the server software and all addons by default.
#                                Available software options
#                                  mcserver - Minecraft server software.
#                                  bukkit   - Craft Bukkit server software.
#                                  c10t     - c10t mapping software.
### END INIT INFO
 
USER_NAME=minecraft

# The location of server software and data.
LOCATION="/home/$USER_NAME"

## Required software.

JAVA=$(which java)
PERL=$(which perl)
SCREEN=$(which screen)
WGET=$(which wget)

## Minecraft software options.

# Generic server options.
INITIAL_MEMORY="1024M"
MAXIMUM_MEMORY="1024M"

# Server software to use.
#   mcserver - Minecraft server software.
#   bukkit   - Craft Bukkit server software.
SERVER_TYPE="mcserver"

# Software packages, used for updating.
#   mcserver - Minecraft server software.
#   bukkit   - Craft Bukkit server software.
#   c10t     - c10t mapping software.

# Available software packages.
AVAILABLE_PACKAGES="mcserver bukkit c10t"

# Software packages updated with update command.
UPDATE_PACKAGES="$SERVER_TYPE c10t"

# Minecraft server options.
MCSERVER_URL="http://www.minecraft.net/download/minecraft_server.jar"
MCSERVER_LOCATION="$LOCATION/minecraft_server"
MCSERVER_JAR="$MCSERVER_LOCATION/minecraft_server.jar"
MCSERVER_ARGS="nogui"
MCSERVER_COMMAND="$JAVA -Xms$INITIAL_MEMORY -Xmx$MAXIMUM_MEMORY -jar $MCSERVER_JAR $MCSERVER_ARGS"

# Bukkit server options.
BUKKIT_URL="http://ci.bukkit.org/job/dev-CraftBukkit/promotion/latest/Recommended/artifact/target/craftbukkit-0.0.1-SNAPSHOT.jar"
BUKKIT_LOCATION="$LOCATION/minecraft_server"
BUKKIT_JAR="$BUKKIT_LOCATION/craftbukkit-0.0.1-SNAPSHOT.jar"
BUKKIT_ARGS="nogui"
BUKKIT_COMMAND="$JAVA -Xms$INITIAL_MEMORY -Xmx$MAXIMUM_MEMORY -jar $BUKKIT_JAR $BUKKIT_ARGS"

# c10t mapping software options.
C10T_URL="http://toolchain.eu/minecraft/c10t/releases"
C10T_LOCATION="$LOCATION/c10t"
C10T_BIN="$C10T_LOCATION/c10t"

# Location to place map images, and the URL displayed to users for map access.
MAPS_URL="http://minecraft.server.com/maps"
MAPS_LOCATION="$LOCATION/maps"
 
## Lib-notify configuration

# To use lib-notify to print a message on your desktop of important server events, change the following to a 1.
USE_LIBNOTIFY=0

# The username and display that notifications will be routed to.
LIBNOTIFY_USER_NAME=$USER_NAME
LIBNOTIFY_DISPLAY=":0.0"
 
## World configuration.

WORLDS_LOCATION="$LOCATION/worlds"

# List of worlds and the ports they are running on.  This file will
# be generated if missing.
# Note: World name should not contain a space, at least for now.
# ie:
#   alpha    25565
#   beta    25566
WORLDS_CONF="$LOCATION/worlds.conf"

# Default world name and port if worlds.conf is missing.
DEFAULT_WORLD="world"
DEFAULT_PORT="25565"
 
## Message of the day file, displayed to users on login.

MOTD="$LOCATION/motd.txt"
 
## Backup configuration.

BACKUP_LOCATION="$LOCATION/backups"

# Length in days that backups survive.
BACKUP_FULL_DURATION=31
 
## Internal Methods.

execute() {
    # Execute the given command.
    # ARGS: command user
    if [ $(id -u) = 0 ]; then
        # Script is running as root, switch user and execute the command.
        su -c "$1" $2
    else
        # Script is running as a user, just execute the command.
        sh -c "$1"
    fi
}

getProcessIDs() {
    # Get the PIDs of the Screen and Java process for the world server.
    # ARGS: world
    local SCREEN_PID JAVA_PID
    SCREEN_PID=$(execute "$SCREEN -ls" $USER_NAME | $PERL -ne 'if ($_ =~ /^\t(\d+)\.minecraft-'$1'/) { print $1; }')
    JAVA_PID=$(ps -a -u $USER_NAME -o pid,ppid,comm | $PERL -ne 'if ($_ =~ /^\s*(\d+)\s+'$SCREEN_PID'\s+java/) { print $1; }')
    echo "$SCREEN_PID $JAVA_PID"
}

serverRunning() {
    # Check to see if the world server is running.
    # ARGS: world
    local PIDS
    PIDS=$(getProcessIDs $1)
    # Try to determine if the world is running.
    if [ -n "$(echo $PIDS | cut -d ' ' -f1)" ] && [ -n "$(echo $PIDS | cut -d ' ' -f2)" ]; then
        echo 1
    else
        echo 0
    fi
}

sendCommand() {
    # Send a command to the world server.
    # ARGS: world command
    local COMMAND
    COMMAND=$(printf "$2\r")
    execute "$SCREEN -S minecraft-$1 -p 0 -X stuff \"$COMMAND\"" $USER_NAME
    if [ ! $? = 0 ]; then
        printf "Error sending command to server $1.\n"
        exit 1
    fi
}

displayScreen() {
    # Connect to the Screen of a world server.
    # ARGS: world
    execute "$SCREEN -x minecraft-$1" $USER_NAME
    if [ ! $? = 0 ]; then
        printf "Error connecting to Screen.\n"
        exit 1
    fi
}

listContains() {
    # Check whether the item is in the list.
    # ARGS: item list
    local MATCH ITEM
    MATCH=0
    for ITEM in $2; do
        if [ "$ITEM" = "$1" ]; then
            MATCH=1
        fi
    done
    echo $MATCH
}

getPort() {
    # Grab the port for the given world.
    # ARGS: world
    local PORT
    PORT=$(execute "cat $WORLDS_CONF" $USER_NAME | $PERL -ne 'if ($_ =~ /^'$1'\s+(\d+)/) { print "$1"; }')
    echo $PORT
}

getWorlds() {
    # Grab the list of worlds.
    local WORLDS
    WORLDS=$(execute "cat $WORLDS_CONF" $USER_NAME | $PERL -ne 'if ($_ =~ /^(\w+)\s+\d+/) { print "$1 "; }')
    echo $WORLDS
}

libNotify() {
    # Send a message to the desktop using lib-notify, if it is available.
    # ARGS: summary body
    local NOTIFY
    NOTIFY=$(which notify-send)
    if [ -e $NOTIFY ]; then
        execute "DISPLAY=$LIBNOTIFY_DISPLAY $NOTIFY \"$1\" \"$2\"" $LIBNOTIFY_USER_NAME > /dev/null 2>&1
    fi
}

checkForLogin() {
    # Check for users logging into a world.
    # ARGS: world message
    local LOGIN PLAYER_NAME
    LOGIN=$(echo "$2" | $PERL -ne 'if ($_ =~ /(\w+) \[\/([0-9\.]+)\:(\d+)\] logged in with entity id (\d+)/) { print "$1\t$2\t$3\t$4"; }')
    if [ -n "$LOGIN" ]; then
        PLAYER_NAME=$(printf "$LOGIN" | cut -f1)
        # Add the user to the world.users file.
        execute "printf \"$LOGIN\n\" >> \"$WORLDS_LOCATION/$1.users\"" $USER_NAME
        # Announce the user logging in via lib-notify.
        if [ $USE_LIBNOTIFY ]; then
            libNotify "Minecraft - $1" "$PLAYER_NAME has logged into world."
        fi
        # Whisper the MOTD to the user logging in.
        if [ -e $MOTD ]; then
            while read LINE; do
                sendCommand $1 "tell $PLAYER_NAME $LINE"
            done < $MOTD
        fi
    fi
}

checkForLogout() {
    # Check for users logging out of a world.
    # ARGS: world message
    local LOGOUT PLAYER_NAME
    LOGOUT=$(echo "$2" | $PERL -ne 'if ($_ =~ /(\w+) lost connection\: (.+)/) { print "$1\t$2"; }')
    if [ -n "$LOGOUT" ]; then
        PLAYER_NAME=$(printf "$LOGOUT" | cut -f1)
        # Remove the user from the world.users file.
        execute "perl -i -ne 'print unless /^$PLAYER_NAME\t[0-9\.]+\t\d+\d+/;' $WORLDS_LOCATION/$1.users" $USER_NAME
        # Announce the user logging out via lib-notify.
        if [ $USE_LIBNOTIFY ]; then
            libNotify "Minecraft - $1" "$PLAYER_NAME has logged out of world."
        fi
    fi
}

parseLog() {
    # Parse through the log file for the given world.
    # ARGS: world
    local LINE DATE TIME TYPE MESSAGE
    while read LINE; do
        LINE=$(echo "$LINE" | $PERL -ne 'if ($_ =~ /(.+) (.+) \[(\w+)\] (.+)/) { print "$1\t$2\t$3\t$4"; }')
        DATE=$(echo "$LINE" | cut -f1)
        TIME=$(echo "$LINE" | cut -f2)
        TYPE=$(echo "$LINE" | cut -f3)
        MESSAGE=$(echo "$LINE" | cut -f4)
        case "$TYPE" in
            INFO)
                checkForLogin $1 "$MESSAGE"
                checkForLogout $1 "$MESSAGE"
            ;;
            SEVERE)
                sendCommand $1 "say The server is experiencing issues, restarting in 5 seconds..."
                sleep 5
                forceStop $1
                sleep 5
                start $1
            ;;
            WARNING)
            ;;
            *)

            ;;
        esac
    done
}

watchLog() {
    # Watch the world server log file.
    # ARGS: world
    local PID
    # Make sure that the server.log file exists.
    if [ -e "$WORLDS_LOCATION/$1/server.log" ]; then
        # Watch the log.
        PID=$(echo $(getProcessIDs $1) | cut -d ' ' -f2)
        tail -n0 -f --pid=$PID $WORLDS_LOCATION/$1/server.log
    fi
}

start() {
    # Start the world server.
    # ARGS: world
    local SERVER_PORT PID
    # Make sure that the server directory exists.
    execute "mkdir -p $WORLDS_LOCATION/$1" $USER_NAME
    cd $WORLDS_LOCATION/$1
    # Make sure that the server.properties file exists.
    if [ ! -e server.properties ]; then
        SERVER_PORT=$(getPort $1)
        execute "printf \"# Minecraft server properties\n\" > server.properties" $USER_NAME
        execute "printf \"level-name=$1\n\" >> server.properties" $USER_NAME
        execute "printf \"server-port=$SERVER_PORT\n\" >> server.properties" $USER_NAME
    fi
    # Make sure that the world is configured properly (update old configurations).
    if [ ! "$1" = "world" ] && [ $(grep 'level-name' server.properties | cut -d '=' -f2) = "world" ] &&  [ -d world ]; then
        execute "perl -i -ne 'if (/level-name=world/) { print \"level-name=$1\n\"; } else { print; }' server.properties" $USER_NAME
        execute "mv world $1" $USER_NAME
    fi
    # Make sure that the server.log file exists.
    execute "touch server.log" $USER_NAME
    # Erase the world's users file before starting up the world (should already be empty).
    execute "printf \"\" > \"$WORLDS_LOCATION/$1.users\"" $USER_NAME
    # Start the server.
    execute "$SCREEN -dmS minecraft-$1 $SERVER_COMMAND" $USER_NAME
    if [ ! $? = 0 ]; then
        printf "Error starting the server.\n"
        exit 1
    fi
    # Start the log processor.
    PID=$(echo $(getProcessIDs $1) | cut -d ' ' -f2)
    tail -n0 -f --pid=$PID $WORLDS_LOCATION/$1/server.log | parseLog $1 &
}

stop() {
    # Stop the world server.
    # ARGS: world
    sendCommand $1 "stop"
    # Erase the world's users file since we won't be able to catch anyone logging off.
    execute "printf \"\" > \"$WORLDS_LOCATION/$1.users\"" $USER_NAME
}

forceStop() {
    # Forcibly stop the world server.
    # ARGS: world
    local PIDS
    PIDS=$(getProcessIDs $1)
    # Try to stop the server cleanly first.
    stop $1
    sleep 5
    # Kill the process ids of the world server.
    kill -9 $PIDS > /dev/null 2>&1
}

fullBackup() {
    # Backup the world server.
    # ARGS: world
    local DATE NUM
    # Make sure that the backup location exists.
    execute "mkdir -p $BACKUP_LOCATION" $USER_NAME
    cd $WORLDS_LOCATION
    # Grab the date.
    DATE=$(date +%Y-%m-%d)
    # Make sure that we are using a unique filename for this backup.
    NUM=0
    while [ -e $BACKUP_LOCATION/fullBackup-$1-$DATE-$NUM.tar.gz ]; do
        NUM=$(($NUM + 1))
    done
    # Create the full backup file.
    execute "tar -czf $BACKUP_LOCATION/fullBackup-$1-$DATE-$NUM.tar.gz $1" $USER_NAME
    # Cleanup old backups.
    execute "find $BACKUP_LOCATION -name fullBackup-$1-* -type f -mtime +$BACKUP_FULL_DURATION -delete" $USER_NAME
}

updateServerSoftware() {
    # Update server software.
    # Args: file location url
    execute "mkdir -p $2" $USER_NAME
    # Backup the old server jar.
    if [ -e $1 ]; then
        execute "mv -f $1 $1.old" $USER_NAME
    fi
    # Download the new server software.
    execute "$WGET -qO $1 $3" $USER_NAME
    # Check for error and restore backup if found.
    if [ ! $? = 0 ]; then
        printf "\nError updating server software.\n"
        if [ -e "$1.old" ]; then
            execute "mv -f $1.old $1" $USER_NAME
        fi
        exit 1
    fi
}

updateMappingSoftware() {
    # Update the c10t mapping software.
    local ARCH VERSION
    # Make sure the directory exists.
    execute "mkdir -p $C10T_LOCATION" $USER_NAME
    cd $C10T_LOCATION
    # Determine the architecture of the system.
    if [ $(getconf LONG_BIT) = 64 ]; then
        ARCH="x86_64"
    else
        ARCH="x86"
    fi
    # Determine the current version number of c10t.
    execute "$WGET -qO CURRENT $C10T_URL/CURRENT" $USER_NAME
    if [ ! $? = 0 ]; then
        printf "\nError determining the current version of c10t.\n"
        exit 1
    fi
    VERSION=$(execute "cat CURRENT")
    # Download the new version of c10t.
    execute "$WGET -qO c10t.tar.gz $C10T_URL/c10t-$VERSION-linux-$ARCH.tar.gz" $USER_NAME
    if [ ! $? = 0 ]; then
        printf "\nError updating c10t.\n"
        exit 1
    fi
    # Uncompress the archive.
    execute "tar xzf c10t.tar.gz --strip 1" $USER_NAME
}

update() {
    # Update software package.
    # ARGS: package
    case "$1" in
        mcserver)
            updateServerSoftware "$MCSERVER_JAR" "$MCSERVER_LOCATION" "$MCSERVER_URL"
        ;;
        bukkit)
            updateServerSoftware "$BUKKIT_JAR" "$BUKKIT_LOCATION" "$BUKKIT_URL"
        ;;
        c10t)
            updateMappingSoftware
        ;;
        *)
            printf "Unknown software package: $1\n"
            exit 1
        ;;
    esac
}

c10t() {
    # Run c10t mapping software on the server.
    # ARGS: world
    execute "mkdir -p $MAPS_LOCATION/$1" $USER_NAME
    # Make sure that the world files are actually there before mapping.
    if [ -e "$WORLDS_LOCATION/$1/server.properties" ]; then
        # Create various maps for the main world.
        execute "$C10T_BIN -s -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/surface.png" $USER_NAME > /dev/null 2>&1
        execute "$C10T_BIN -s -c -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/caves.png" $USER_NAME > /dev/null 2>&1
        execute "$C10T_BIN -s -c -H -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/caves_heightmap.png" $USER_NAME > /dev/null 2>&1
        execute "$C10T_BIN -s -a -i 21 -H -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/lapis_heightmap.png" $USER_NAME > /dev/null 2>&1
        execute "$C10T_BIN -s -a -i 56 -H -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/diamonds_heightmap.png" $USER_NAME > /dev/null 2>&1
        execute "$C10T_BIN -s -a -i 4 -H -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/cobble_heightmap.png" $USER_NAME > /dev/null 2>&1
        execute "$C10T_BIN -s -q -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/surface_oblique.png" $USER_NAME > /dev/null 2>&1
        execute "$C10T_BIN -s -q -c -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/caves_oblique.png" $USER_NAME > /dev/null 2>&1
        execute "$C10T_BIN -s -z -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/surface_isometric.png" $USER_NAME > /dev/null 2>&1
        execute "$C10T_BIN -s -z -c -w $WORLDS_LOCATION/$1/$1 -o $MAPS_LOCATION/$1/caves_isometric.png" $USER_NAME > /dev/null 2>&1
        # Create various maps for the nether world if it exists.
        if [ -d "$WORLDS_LOCATION/$1/$1/DIM-1" ]; then
            execute "$C10T_BIN -s -N --hell-mode -w $WORLDS_LOCATION/$1/$1/DIM-1 -o $MAPS_LOCATION/$1/nether_surface.png" $USER_NAME > /dev/null 2>&1
            execute "$C10T_BIN -s -N --hell-mode -q -w $WORLDS_LOCATION/$1/$1/DIM-1 -o $MAPS_LOCATION/$1/nether_surface_oblique.png" $USER_NAME > /dev/null 2>&1
            execute "$C10T_BIN -s -N --hell-mode -z -w $WORLDS_LOCATION/$1/$1/DIM-1 -o $MAPS_LOCATION/$1/nether_surface_isometric.png" $USER_NAME > /dev/null 2>&1
        fi
    fi
}

## Begin.
 
# Make sure that Java, Perl, GNU Screen, and GNU Wget are installed.
if [ ! -e $JAVA ]; then
    printf "ERROR: Java not found!\n"
    printf "Try installing this with:\n"
    printf "sudo apt-get install openjdk-6-jre\n"
    exit 1
fi
if [ ! -e $PERL ]; then
    printf "ERROR: Perl not found!\n"
    printf "Try installing this with:\n"
    printf "sudo apt-get install perl\n"
    exit 1
fi
if [ ! -e $SCREEN ]; then
    printf "ERROR: GNU Screen not found!\n"
    printf "Try installing this with:\n"
    printf "sudo apt-get install screen\n"
    exit 1
fi
if [ ! -e $WGET ]; then
    printf "ERROR: GNU Wget not found!\n"
    printf "Try installing this with:\n"
    printf "sudo apt-get install wget\n"
    exit 1
fi

# Make sure that the minecraft user exists.
if [ ! -n "$(grep $USER_NAME /etc/passwd)" ]; then
    printf "ERROR: This script requires that a user account named $USER_NAME exist on this system.\n"
    printf "Either modify the USER_NAME variable in this script, or try adding this user:\n"
    printf "sudo adduser $USER_NAME\n"
    exit 1
fi

# Warn if the script is running with the wrong user.
if [ ! $(id -u) = 0 ] && [ ! $(whoami) = $USER_NAME ]; then
    printf "WARNING: This script appears to have been started by the wrong user.\n"
fi

# Make sure that the worlds.conf file exists.
if [ ! -e $WORLDS_CONF ]; then
    execute "printf \"# Minecraft world configuration file\n\" > $WORLDS_CONF" $USER_NAME
    execute "printf \"# <world>\t<port>\n\" >> $WORLDS_CONF" $USER_NAME
    execute "printf \"$DEFAULT_WORLD\t$DEFAULT_PORT\n\" >> $WORLDS_CONF" $USER_NAME
fi

# Initialize some variables determined by the server type.
case "$SERVER_TYPE" in
    mcserver)
        SERVER_COMMAND=$MCSERVER_COMMAND
        SERVER_FILE=$MCSERVER_JAR

    ;;
    bukkit)
        SERVER_COMMAND=$BUKKIT_COMMAND
        SERVER_FILE=$BUKKIT_JAR
    ;;
    *)
        printf "Unknown server type: $SERVER_TYPE\n"
        exit 1
    ;;
esac
 
# Grab the list of worlds.
WORLDS=$(getWorlds)

# Respond to the command line arguments.
case "$1" in
    start)
        # Make sure that the server software exists.
        if [ ! -e $SERVER_FILE ]; then
            printf "Server software not found, downloading it...\n"
            update $SERVER_TYPE
        fi
        # Check for the optional world command line argument.
        if [ -n "$2"  ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
            WORLDS="$2"
        elif [ -n "$2" ]; then
            printf "Minecraft world $2 not found!\n"
            printf "  Usage:  $0 $1 <world>\n"
            exit 1
        fi
        # Start each world requested, if not already running.
        printf "Starting Minecraft Server:"
        for WORLD in $WORLDS; do
            if [ $(serverRunning $WORLD) = 0 ]; then
                printf " $WORLD"
                start $WORLD
            fi
        done
        printf "\n"
    ;;
    stop|force-stop)
        # Check for the optional world command line argument.
        if [ -n "$2"  ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
            WORLDS="$2"
        elif [ -n "$2" ]; then
            printf "Minecraft world $2 not found!\n"
            printf "  Usage:  $0 $1 <world>\n"
            exit 1
        fi
        # Stop each world requested, if running.
        printf "Stopping Minecraft Server:"
        for WORLD in $WORLDS; do
            # Try to stop the world cleanly.
            if [ $(serverRunning $WORLD) = 1 ]; then
                printf " $WORLD"
                sendCommand $WORLD "say The server is about to go down."
                sendCommand $WORLD "save-all"
                sendCommand $WORLD "save-off"
                sendCommand $WORLD "say The server is going down in 5 seconds..."
                sleep 5
                if [ "$1" = "force-stop" ]; then
                    forceStop $WORLD
                else
                    stop $WORLD
                fi
                sleep 5
            fi
        done
        printf "\n"
    ;;
    restart|reload|force-restart|force-reload)
        # Check for the optional world command line argument.
        if [ -n "$2"  ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
            WORLDS="$2"
        elif [ -n "$2" ]; then
            printf "Minecraft world $2 not found!\n"
            printf "  Usage:  $0 $1 <world>\n"
            exit 1
        fi
        # Restart each world requested, start those not already running.
        printf "Restarting Minecraft Server:"
        for WORLD in $WORLDS; do
            printf " $WORLD"
            if [ $(serverRunning $WORLD) = 1 ]; then
                sendCommand $WORLD "say The server is about to restart."
                sendCommand $WORLD "save-all"
                sendCommand $WORLD "save-off"
                sendCommand $WORLD "say Restarting in 5 seconds..."
                sleep 5
                if [ "$(echo \"$1\" | cut -d '-' -f1)" = "force" ]; then
                    forceStop $WORLD
                else
                    stop $WORLD
                fi
                sleep 5
            fi;
            start $WORLD
        done
        printf "\n"
    ;;
    status|show)
        # Check for the optional world command line argument.
        if [ -n "$2"  ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
            WORLDS="$2"
        elif [ -n "$2" ]; then
            printf "Minecraft world $2 not found!\n"
            printf "  Usage:  $0 $1 <world>\n"
            exit 1
        fi
        # Show the status of each world requested.
        printf "Minecraft Server Status:\n"
        for WORLD in $WORLDS; do
            printf "  $WORLD: "
            if [ $(serverRunning $WORLD) = 1 ]; then
                printf "running (%d users online)\n" $(cat $WORLDS_LOCATION/$WORLD.users | wc -l)
            else
                printf "not running.\n"
            fi
        done
    ;;
    send)
        # Check for the world command line argument.
        if [ -n "$2" ] && [ $(listContains $2 "$WORLDS") = 1 ] && [ -n "$3" ]; then
            WORLD=$2
            shift 2
            printf "Send command to world $WORLD: $*\n"
            sendCommand $WORLD "$*"
        else
            printf "Usage:  $0 $1 <world> <command>\n"
            printf "   ie:  $0 $1 world say Hello World!\n"
            exit 1
        fi
    ;;
    screen)
        # Check for the world command line argument.
        if [ -n "$2" ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
            displayScreen $2
        else
            if [ -n "$2" ]; then
                printf "Minecraft world $2 not found!\n"
            else
                printf "Minecraft world not provided!\n"
            fi
            printf "  Usage:  $0 $1 <world>\n"
            exit 1
        fi
    ;;
    watch)
        # Check for the world command line argument.
        if [ -n "$2" ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
            watchLog $2
        else
            if [ -n "$2" ]; then
                printf "Minecraft world $2 not found!\n"
            else
                printf "Minecraft world not provided!\n"
            fi
            printf "  Usage:  $0 $1 <world>\n"
            exit 1
        fi
    ;;
    backup)
        # Check for the optional world command line argument.
        if [ -n "$2"  ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
            WORLDS="$2"
        elif [ -n "$2" ]; then
            printf "Minecraft world $2 not found!\n"
            printf "  Usage:  $0 $1 <world>\n"
            exit 1
        fi
        # Backup each world requested.
        printf "Backing up Minecraft Server:"
        for WORLD in $WORLDS; do
            printf " $WORLD"
            if [ $(serverRunning $WORLD) = 1 ]; then
                sendCommand $WORLD "say Backing up the world."
                sendCommand $WORLD "save-all"
                sendCommand $WORLD "save-off"
                sleep 20
                fullBackup $WORLD
                sendCommand $WORLD "save-on"
                sendCommand $WORLD "say Backup complete."
            else
                fullBackup $WORLD
            fi
        done
        printf "\n"
    ;;
    update)
        printf "Updating the Minecraft Server software...\n"
        # Check for the optional package command line argument.
        if [ -n "$2"  ] && [ $(listContains $2 "$AVAILABLE_PACKAGES") = 1 ]; then
            UPDATE_PACKAGES="$2"
        elif [ -n "$2" ]; then
            printf "Minecraft software package $2 not found!\n"
            printf "  Usage:  $0 $1 <software package>\n"
            exit 1
        fi
        # If the server software is being updated, stop all the world servers, and backup the worlds.
        if [ -n "$(echo \"$UPDATE_PACKAGES\" | grep $SERVER_TYPE)" ]; then
            printf "Stopping Minecraft Server:"
            for WORLD in $WORLDS; do
                if [ $(serverRunning $WORLD) = 1 ]; then
                    printf " $WORLD"
                    sendCommand $WORLD "say The server software is being updated."
                    sendCommand $WORLD "say Server restart is imminent."
                    sendCommand $WORLD "save-all"
                    sendCommand $WORLD "save-off"
                    sendCommand $WORLD "say Restarting in 5 seconds."
                    sleep 5
                    stop $WORLD
                fi
            done
            printf "\n"
            printf "Backing up Minecraft Server:"
            for WORLD in $WORLDS; do
                printf " $WORLD"
                fullBackup $WORLD
            done
            printf "\n"
        fi
        # Update each software package requested.
        printf "Updating software package:"
        for PACKAGE in $UPDATE_PACKAGES; do
            printf " $PACKAGE"
            update $PACKAGE
        done
        printf "\n"
        if [ -n "$(echo \"$UPDATE_PACKAGES\" | grep $SERVER_TYPE)" ]; then
            printf "Starting Minecraft Server:"
            for WORLD in $WORLDS; do
                printf " $WORLD"
                start $WORLD
            done
            printf "\n"
        fi
    ;;
    c10t|map)
        # Make sure that the c10t software exists.
        if [ ! -e $C10T_BIN ]; then
            printf "c10t software not found, downloading it...\n"
            update "c10t"
        fi
        # Check for the optional world command line argument.
        if [ -n "$2"  ] && [ $(listContains $2 "$WORLDS") = 1 ]; then
            WORLDS="$2"
        elif [ -n "$2" ]; then
            printf "Minecraft world $2 not found!\n"
            printf "  Usage:  $0 $1 <world>\n"
            exit 1
        fi
        # Run c10t on each world requested.
        printf "Running c10t mapping:"
        for WORLD in $WORLDS; do
            printf " $WORLD"
            if [ $(serverRunning $WORLD) = 1 ]; then
                sendCommand $WORLD "say The world is about to be mapped with c10t."
                sendCommand $WORLD "save-all"
                sendCommand $WORLD "save-off"
                sleep 20
                fullBackup $WORLD
                c10t $WORLD
                sendCommand $WORLD "save-on"
                sendCommand $WORLD "say Mapping is complete.  You can access the maps at:"
                sendCommand $WORLD "say $MAPS_URL/$WORLD"
            else
                fullBackup $WORLD
                c10t $WORLD
            fi
        done
        printf "\n"
    ;;
    *)
        printf "Usage: $0 {start|stop|force-stop|restart|force-restart|status|send|screen|watch|backup|update|c10t} {Optional: world or software package}\n"
        exit 1
    ;;
esac
exit 0

EDIT: i did see the post here about optimizing java. Figured i can try that later today also.

 

# Generic server options.
INITIAL_MEMORY="1024M"
MAXIMUM_MEMORY="1024M"

change this if you don't do it already

 

ah that is just the default one. I changed mine to 9024.

Mine is running this when i start getting these errors.

 

Do you already check the clock?

 

Its on ubuntu, it runs fine for a while then something happens and starts spitting that out. I think at this past time there was about 8 people on the server or so.

I will see about setting the ubuntu clock but not sure how / why it would get off.

hm..

 

I don't have my server running on ubuntu, but I have the same problem until I sync the clock with an internet service.

 

I will try that and see if it fixes it.

 

hey guys,

I made a lot of progress but i am getting this error and trying to track it down. I can tell what is causing it? Any advice?

Code:

[SEVERE] java.lang.Throwable
2011-07-18 02:16:10 [SEVERE]    at org.bukkit.craftbukkit.util.LongHashtable.get(LongHashtable.java:32)
2011-07-18 02:16:10 [SEVERE]    at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:116)
2011-07-18 02:16:10 [SEVERE]    at net.minecraft.server.World.getChunkAt(World.java:272)
2011-07-18 02:16:10 [SEVERE]    at net.minecraft.server.World.getTypeId(World.java:219)
2011-07-18 02:16:10 [SEVERE]    at net.minecraft.server.BlockGrass.a(SourceFile:53)
2011-07-18 02:16:10 [SEVERE]    at net.minecraft.server.World.j(World.java:1934)
2011-07-18 02:16:10 [SEVERE]    at net.minecraft.server.World.doTick(World.java:1706)
2011-07-18 02:16:10 [SEVERE]    at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:441)
2011-07-18 02:16:10 [SEVERE]    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:361)
2011-07-18 02:16:10 [SEVERE]    at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)

Code:

2011-07-18 02:16:32 [SEVERE] java.lang.Throwable
2011-07-18 02:16:32 [SEVERE]    at net.minecraft.server.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:124)
2011-07-18 02:16:32 [SEVERE]    at net.minecraft.server.World.getChunkAt(World.java:272)
2011-07-18 02:16:32 [SEVERE]    at net.minecraft.server.World.getTypeId(World.java:219)
2011-07-18 02:16:32 [SEVERE]    at net.minecraft.server.BlockStationary.a(BlockStationary.java:47)
2011-07-18 02:16:32 [SEVERE]    at net.minecraft.server.World.j(World.java:1934)
2011-07-18 02:16:32 [SEVERE]    at net.minecraft.server.World.doTick(World.java:1706)
2011-07-18 02:16:32 [SEVERE]    at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:441)
2011-07-18 02:16:32 [SEVERE]    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:361)
2011-07-18 02:16:32 [SEVERE]    at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)

 

Sorry for bumping this.. Also writing this for anyone who might have the same problem, and stumbles across on this thread.

Directed towards your last reply.
It seems like your map is corrupted, I was getting the same errors, but someone told me to use a plugin called chunkster, to repair the maps, you should at least give it a try, but remember to backup your map files before using it.

http://forums.bukkit.org/threads/admin-chunkster.8186/