[question]server restart

Hey, i was just wondering if there is a way to set my server to make a backup(by backupplugin(the fork)) and then restart.
I am on Ubuntu 10.10, and this really isn't urgent. would it be something in the .sh? or is this more a plugin?

 

there may be plugins that do this directly.. or you could find one of the tcp control plugins and use scripts to fire off commands that way

 

just wondering, if i modified the .sh, wouldn't that work?

 

REALLY depends on what you change

sorry, i'm not sure i know what you are thinking of.

 

i want to shutdown the server, and then start it again. so, what im thinking is in the .sh
start the server
backup world
shutdown server and start new .sh
close .sh

would that maybe work?

 

not likely..

process goes:

server start (sh WAITS)
world backs up
server continues running, sh continues waiting

you manually stop server..
sh resumes, tries to shutdown server (how would you even do that), starts a new server and tries to close itself, taking server with it.

 

hmm. that is a problem

 

BUT:

if you got the TCP commands plugin and the backup plugin:

sh has command to start server, as always

separate .sh has command to STOP server via tcp command, then restart server..you'd have to use screen for that
separate .sh is run via cron job (scheduled task)

pretty sure others have done this before, try searching for cron on the forums

 

ok. what is TCP commands plugin?

 

http://www.minecraftwiki.net/wiki/Server_startup_script

I use that script and then a cron job to do regular backups and restarts in Ubuntu 10.04LTS. It may require some tweaking, but nothing too harsh.

 

thanks, im gonna post the code i edited here, so someone can check it over
i may delete the parts i don't need...

 

http://forums.bukkit.org/threads/dev-remotetcp-v1-0-crypted-server-query-602.10506/
and
http://forums.bukkit.org/threads/ad...-detection-auto-saves-remote-console-740.674/

 

alright, so how does this look? this was just really quick, im sure there are some errors

Code:

#!/bin/bash
# /etc/init.d/minecraft
# version 0.3.2 2011-01-27 (YYYY-MM-DD)

### 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 server
# Description:    Starts the minecraft server
### END INIT INFO

#Settings
SERVICE='craftbukkit.jar'
USERNAME="minecraft"
MCPATH='/home/minecraft/minecraft'
CPU_COUNT=2
INVOCATION="java -Xmx3G -Xms3G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalPacing -XX:ParallelGCThreads=$CPU_COUNT -XX:+AggressiveOpts -jar craftbukkit.jar nogui"
BACKUPPATH='/media/remote.share/minecraft.backup'
mc_start() {
  if ps ax | grep -v grep | grep -v -i SCREEN | grep $SERVICE > /dev/null
  then
    echo "Tried to start but $SERVICE was already running!"
  else
    echo "$SERVICE was not running... starting."
    cd $MCPATH
    as_user "cd $MCPATH && screen -dmS minecraft $INVOCATION"
    sleep 7
    if ps ax | grep -v grep | grep -v -i SCREEN | grep $SERVICE > /dev/null
    then
      echo "$SERVICE is now running."
    else
      echo "Could not start $SERVICE."
    fi
  fi
}

mc_stop() {
        if ps ax | grep -v grep | grep -v -i SCREEN | grep $SERVICE > /dev/null
        then
                echo "$SERVICE is running... stopping."
                as_user "screen -p 0 -S minecraft -X eval 'stuff \"say SERVER SHUTTING DOWN IN 10 SECONDS. Saving map...\"\015'"
                as_user "screen -p 0 -S minecraft -X eval 'stuff \"save-all\"\015'"
                sleep 10
                as_user "screen -p 0 -S minecraft -X eval 'stuff \"stop\"\015'"
                sleep 7
        else
                echo "$SERVICE was not running."
        fi
        if ps ax | grep -v grep | grep -v -i SCREEN | grep $SERVICE > /dev/null
        then
                echo "$SERVICE could not be shut down... still running."
        else
                echo "$SERVICE is shut down."
        fi
}

mc_backup() {
   echo "Backing up minecraft world"
   if [ -d $BACKUPPATH/world_`date "+%Y.%m.%d"` ]
   then
     for i in 1 2 3 4 5 6
     do
       if [ -d $BACKUPPATH/world_`date "+%Y.%m.%d"`-$i ]
       then
         continue
       else
         as_user "cd $MCPATH && cp -r world $BACKUPPATH/world_`date "+%Y.%m.%d"`-$i"
         break
       fi
     done
   else
     as_user "cd $MCPATH && cp -r world $BACKUPPATH/world_`date "+%Y.%m.%d"`"
     echo "Backed up world"
   fi
   echo "Backing up the minecraft server executable"
   if [ -f "$BACKUPPATH/minecraft_server_`date "+%Y.%m.%d"`.jar" ]
   then
     for i in 1 2 3 4 5 6
     do
       if [ -f "$BACKUPPATH/minecraft_server_`date "+%Y.%m.%d"`-$i.jar" ]
       then
         continue
       else
         as_user "cd $MCPATH && cp minecraft_server.jar \"$BACKUPPATH/minecraft_server_`date "+%Y.%m.%d"`-$i.jar\""
         break
       fi
     done
   else
     as_user "cd $MCPATH && cp minecraft_server.jar \"$BACKUPPATH/minecraft_server_`date "+%Y.%m.%d"`.jar\""
   fi
   echo "Backup complete"
}
 
#Start-Stop here
case "$1" in
  start)
    mc_start
    ;;
  stop)
    mc_stop
    ;;
  restart)
    mc_stop
    mc_start
    ;;
  restart)
    mc_backup
    mc_stop
    mc_start
  status)
    if ps ax | grep -v grep | grep -v -i SCREEN | grep $SERVICE > /dev/null
    then
      echo "$SERVICE is running."
    else
      echo "$SERVICE is not running."
    fi
    ;;

  *)
  echo "Usage: /etc/init.d/minecraft {start|stop|update|backup|status|restart}"
  exit 1
  ;;
esac

exit 0

 

Looks good. You don't want to remove the as_user() method/function because it lets you run commands as the minecraft user without being logged in as the minecraft user. Also, every command the script executes goes through as_user(). Other than that, it is pretty good out of the box, you only have to change anything under #Settings to set it up.

Just make sure it is executable and you ran the commands to update rc.d. I don't know what user name you use to run the server, but that's what you want for USERNAME. Otherwise it won't have the right permissions. Likewise, you have to set up your directories so that they point in the right direction.