Running Minecraft Server on a Linode Debian Instance If you are having issues following the official minecraft wiki then you are not alone - I found it much too generic and could not get the 'init.d' startup script to work. Following is a step by step guide to quickly set up your on game server running on Debian/Ubuntu distribution.
Install Java We are going to install OpenJDK which for all intents and purposes is equivalent to Sun java but without licensing issues. Execute below commands under root or using sudo.
# aptitude update # aptitude install openjdk-6-jre-headless
Download and Install Minecraft Server We are going to download and install into '/usr/local/minecraft' as per the Debian FilesystemHierarchyStandard.
# mkdir /usr/local/minecraft # cd /usr/local/minecraft/ # wget ht tp://dl.bukkit.org/latest-rb/craftbukkit.jarWe are installing the bukkit minecraft version rather then the vanilla one, it is fully comptabible with the vanilla server but lets your run plugins to effectivley manage your server
Server Settings Create the server's server.properties file. I suggest you at least modify the 'motd', and 'level-seed' so that your world is a little personal to you.
# cd /usr/local/minecraft/ # nano server.properties #Danols Minecraft Server properties allow-nether=true level-name=world enable-query=false allow-flight=false server-port=25565 level-type=DEFAULT enable-rcon=false level-seed=Artomix #ht tp://seedhunter.blogspot.com/2012/03/jungle-island.html server-ip= max-build-height=256 spawn-npcs=true white-list=false spawn-animals=true online-mode=true pvp=true difficulty=3 gamemode=0 max-players=6 spawn-monsters=true generate-structures=true view-distance=10 motd=you must survive
Automatic Startup Compared that what is posted on the Minecraft Wiki the below is a simple startup script using Debians/Ubuntus start-stop-deamon utility, it does not have the update server, or run file system in memory option; in my opinion Java+Linux do a good job system caching on demand and any speeds from running in memory
The server is run under user 'minecraft-server' and group 'daemon' to increase security - this account and group is created as follows:
# useradd --home-dir /usr/local/minecraft-server --no-create-home -g daemon --shell /bin/false minecraft-server # groupadd daemonCreate the startup script as follows
# cd /etc/init.d/ # touch minecraft-server # chmod +x minecraft-serverPaste the following code into the script and make sure to modify the DAEMON_ARGS setting to reflect your memory allocation.
#!/bin/bash
### BEGIN INIT INFO
# Provides: minecraft_server
# Required-Start: $local_fs $remote_fs $network
# Required-Stop: $local_fs $remote_fs $network
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Description: Minecraft server debian init script.
# Author: Daniel Sokolowski
#
### END INIT INFO
# You can use this as a template or symbolic link it into `/etc/init.d` on Debian system
# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/bin
DESC="Minecraft Server"
NAME=minecraft_server.jar
SCREENNAME=minecraft-server # the session screen game given
DAEMON="/usr/bin/screen"
DAEMONUSER=minecraft-server
DAEMONGROUP=daemon
# the -Xincgc options enable incremental garbage collector which slows
# execution but makes more memory efficient.
# -Xmx1024M is the recommended minimum
DAEMON_ARGS="-DmS $SCREENNAME java -Xincgc -Xms32M -Xmx304M -jar /usr/local/minecraft-server/$NAME nogui"
# Lowest memory limit used was about 80M on fresh start.
# For screen we use `-DmS` instead of -dmS since -D doesn't detach the screen so our pid
# file created by start-stop-deamon is correct.
PIDFILE=/usr/local/minecraft-server/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME
# Exit if the package is not installed
#[ -f "$DAEMON" ] || exit 0
# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] &&. /etc/default/$NAME
# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh
# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions
#
# Function that starts the daemon/service
#
do_start()
{
# Return
# 0 if daemon has been started
# 1 if daemon was already running
# 2 if daemon could not be started
start-stop-daemon -c $DAEMONUSER -g $DAEMONGROUP -u $DAEMONUSER --start --verbose --background --chdir /usr/local/minecraft-server/ --pidfile $PIDFILE --make-pidfile --exec $DAEMON -- $DAEMON_ARGS
echo "start-stop-daemon -c $DAEMONUSER -g $DAEMONGROUP --start --verbose --background --chdir /usr/local/minecraft-server/ --pidfile $PIDFILE --make-pidfile --exec $DAEMON -- $DAEMON_ARGS"
# Add code here, if necessary, that waits for the process to be ready
# to handle requests from services started subsequently which depend
# on this one. As a last resort, sleep for some time.
}
#
# Function that stops the daemon/service
#
do_stop()
{
# Return
# 0 if daemon has been stopped
# 1 if daemon was already stopped
# 2 if daemon could not be stopped
# other if a failure occurred
start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE
RETVAL="$?"
[ "$RETVAL" = 2 ] && return 2
# Wait for children to finish too if this is a daemon that forks
# and if the daemon is only ever run from this initscript.
# If the above conditions are not satisfied then add some other code
# that waits for the process to drop all resources that could be
# needed by services started subsequently. A last resort is to
# sleep for some time.
start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
[ "$?" = 2 ] && return 2
# Many daemons don't delete their pidfiles when they exit.
rm -f $PIDFILE
sleep 5s
return "$RETVAL"
}
#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
#
# If the daemon can reload its configuration without
# restarting (for example, when it is sent a SIGHUP),
# then implement that here.
#
start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
return 0
}
case "$1" in
start)
[ "$VERBOSE"!= no ] && log_daemon_msg "Starting $DESC" "$NAME"
do_start
case "$?" in
0|1) [ "$VERBOSE"!= no ] && log_end_msg 0;;
2) [ "$VERBOSE"!= no ] && log_end_msg 1;;
esac
;;
stop)
[ "$VERBOSE"!= no ] && log_daemon_msg "Stopping $DESC" "$NAME"
do_stop
case "$?" in
0|1) [ "$VERBOSE"!= no ] && log_end_msg 0;;
2) [ "$VERBOSE"!= no ] && log_end_msg 1;;
esac
;;
#reload|force-reload)
#
# If do_reload() is not implemented then leave this commented out
# and leave 'force-reload' as an alias for 'restart'.
#
#log_daemon_msg "Reloading $DESC" "$NAME"
#do_reload
#log_end_msg $?
#;;
restart|force-reload)
#
# If the "reload" option is implemented then remove the
# 'force-reload' alias
#
log_daemon_msg "Restarting $DESC" "$NAME"
do_stop
case "$?" in
0|1)
do_start
case "$?" in
0) log_end_msg 0;;
1) log_end_msg 1;; # Old process is still running
*) log_end_msg 1;; # Failed to start
esac
;;
*)
# Failed to stop
log_end_msg 1
;;
esac
;;
*)
#echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload}" >&2
exit 3
;;
esac
Activate the startup script and start the server by executing the following commands:# update-rc.d minecraft-server defaults # /etc/init.d/minecraft-server start
More Resources Visit http://bukkit.org/ for a wealth of information and plugins and feel free to contact me at http://webdesign.danols.com.
Article Source: http://EzineArticles.com/?expert=Daniel_Sokolowski
See Also:
The Beginners Guide To Minecraft - Minecrafter Secrets
