MongoDB init script for a sharding node.

README

To install this init script, you should save mongodb to /etc/init.d/ and mongosharding.conf to /etc/

then run the following commands as root or with sudo:

chmod 755 /etc/init.d/mongodb
chown root:root /etc/init.d mongodb
update-rc.d mongodb defaults

This installation procedure was tested on UBUNTU 11.10

mongodb

#! /bin/bash
# This file should be saved as /etc/init.d/mongodb
# Copyright 2011 Flavio Codeco Coelho <fccoelho at gmail dot com>
#
### BEGIN INIT INFO
# Provides:          mongodb
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the mongodb sharding node
# Description:       starts mongodb sharding node using start-stop-daemon
### END INIT INFO
source /etc/mongosharding.conf

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
SHARDPIDFILE=/usr/local/mongodb/logs/shard.pid
CONFIGPIDFILE=/usr/local/mongodb/logs/configdb.pid
MONGOSPIDFILE=/usr/local/mongodb/logs/mongos.pid
SHARDLOGFILE=/usr/local/mongodb/logs/shard.log
CONFIGLOGFILE=/usr/local/mongodb/logs/configdb.log
MONGOSLOGFILE=/usr/local/mongodb/logs/mongos.log
SHARD= $(which mongod)#/usr/local/sbin/mongod 
SHARD_ARGS="--fork --shardsvr --dbpath $DATAPATH --port $SHARDPORT --logpath $SHARDLOGFILE"
CONFIG= $(which mongod)#/usr/local/sbin/mongod 
CONFIG_ARGS="--fork --configsvr --dbpath $CONFIGDATAPATH --port $CONFIGPORT --logpath $CONFIGLOGFILE"
MONGOS= $(which mongos)#/usr/local/sbin/mongos 
MONGOS_ARGS="--fork --configdb $CONFIG_SERVER:$CONFIGPORT --logpath $MONGOSLOGFILE"

NAME=mongodb
DESC=mongodb

test -x $SHARD || exit 0
test -x $CONFIG || exit 0
test -x $MONGOS || exit 0

#set -e

case "$1" in
  start)
        echo -n "Starting $DESC: "
        start-stop-daemon -m --pidfile $SHARDPIDFILE --exec $SHARD --start -- $SHARD_ARGS >> $SHARDLOGFILE&
        if $HOST_CONFIG;
            then
            echo -n "Starting MongoDB Config daemon"
            start-stop-daemon -m --pidfile $CONFIGPIDFILE --exec $CONFIG --start -- $CONFIG_ARGS >> $CONFIGLOGFILE&
            echo -n "Waiting for Config daemon to start:"
            while [ ! -e $CONFIGPIDFILE ] 
                do
                   sleep 1 #waits for config to start
                   echo -n "."
                done
        fi
        echo -n "Starting MongoDB Mongos daemon"
        start-stop-daemon -m --pidfile $MONGOSPIDFILE --exec $MONGOS --start -- $MONGOS_ARGS >> $MONGOSLOGFILE&
        echo "$NAME."
        ;;
  stop)
        echo -n "Stopping $DESC: "
        start-stop-daemon --quiet --pidfile $SHARDPIDFILE --exec $SHARD --stop --retry=TERM/10/KILL/3
        start-stop-daemon --quiet --pidfile $CONFIGPIDFILE --exec $CONFIG --stop --retry=TERM/10/KILL/3
        start-stop-daemon --quiet --pidfile $MONGOSPIDFILE --exec $MONGOS --stop --retry=TERM/10/KILL/3
        echo "$NAME."
        killall mongod # making sure they stop 
        killall mongos
        sudo rm /usr/local/mongodb/logs/*.pid
        ;;
  restart|force-reload)
        echo "Restarting $DESC: "
        start-stop-daemon --quiet --pidfile $SHARDPIDFILE --exec $SHARD --stop --retry 3
        sleep 1
        start-stop-daemon -m --pidfile $SHARDPIDFILE --exec $SHARD --start -- $SHARD_ARGS >> $SHARDLOGFILE&
        if $HOST_CONFIG;
        then
            start-stop-daemon --quiet --pidfile $CONFIGPIDFILE --exec $CONFIG --stop --retry 3
            sleep 1
            start-stop-daemon -m --pidfile $CONFIGPIDFILE --exec $CONFIG --start -- $CONFIG_ARGS >> $CONFIGLOGFILE&
            echo -n "Waiting for Config daemon to start:"
            while [ ! -e $CONFIGPIDFILE ]
                do
                   sleep 1 #waits for config to start
                   echo -n "."
                done
        fi
        start-stop-daemon --quiet --pidfile $MONGOSPIDFILE --exec $MONGOS --stop --retry 3
        sleep 1
        echo -n "Starting MongoDB Mongos daemon"
        start-stop-daemon -m --pidfile $MONGOSPIDFILE --exec $MONGOS --start -- $MONGOS_ARGS >> $MONGOSLOGFILE&
        echo "$NAME."
        ;;
  reload)
      echo -n "Reloading $DESC configuration: "
      start-stop-daemon --stop --signal HUP --quiet --pidfile $SHARDPIDFILE --exec $SHARD
      echo "$NAME."
      ;;
      *)
        N=/etc/init.d/$NAME
        echo "Usage: $N {start|stop|restart|force-reload}" >&2
        exit 1
        ;;
esac

exit 0

mongosharding.conf

#!/bin/bash
###################################################################
# this configuration script will be read by the MongoDb init script
# it should be saved as mongosharding.conf in the /etc folder
# Copyright 2011 Flavio Codeco Coelho <fccoelho at gmail dot com>
###################################################################

# Config server options
HOST_CONFIG=false               #Set to true if this box is to host a config server as well
CONFIG_SERVER=127.0.0.1         #one or three ip addresses separated by commas
CONFIGDATAPATH=/data/config
CONFIGPORT=20000

# Shard Daemon options
DATAPATH=/data/db
SHARDPORT=10000