[root@master] crontab -e  (add time sync cron job)
0 4 * * * rdate -s time server && hwclock -w

[root@master] ulimit -a
core file size (blocks) unlimited
data seg size (kbytes) unlimited
file size (blocks) unlimited
max locked memory (kbytes) unlimited
max memory size (kbytes) unlimited
open files 1024
pipe size (512 bytes) 8
stack size (kbytes) unlimited
cpu time (seconds) unlimited
max user processes 4095
virtual memory (kbytes) unlimited

[root@master] vi /etc/security/limits.conf  (add next tow lines)
neptune_admin_id   soft   nofile     10240
neptune_admin_id   hard   nofile     10240

[neptune@master] ssh-keygen -t rsa (Use empty responses for each prompt)
  Enter passphrase (empty for no passphrase):
  Enter same passphrase again:
  Your identification has been saved in
  /home/neptune/.ssh/id_rsa.

  Your public key has been saved in
  /home/neptune/.ssh/id_rsa.pub.

  The key fingerprint
  is:||||a6:5c:c3:eb:18:94:0b:06:a1:a6:29:58:fa:80:0a:bc neptune@localhost

<?xml version="1.0"?>
<configuration>
    <property>
        <name>neptune.root</name>
        <value>/user/neptune</value>
        <description>root path for data file in DFS(Hadoop)</description>
    </property>
    <property>
      <name>neptune.local.temp</name>
      <value>/home/user_home/tmp/neptune-${user.name}</value>
      <description>A base for other temporary directories.</description>
    </property>
    <property>
      <name>changelog.data.dir</name>
      <value>$USER_HOME$/changelog/</value>
      <description>path where change logs are stored. local machine</description>
    </property>      
    <property>
      <name>changelog.image.dir</name>
      <value>/user/neptune/data/changelog/image</value>
      <description>dfs dir</description>
    </property>   
    <property>
      <name>neptune.cluster.zkservers</name>
      <value>zookeeper_hostname:2181</value>
      <description>zookeeper server hostname(comma separator)</description>
    </property>     
</configuration>

# Set Neptune-specific environment variables here.
# JAVA_HOME, NEPTUNE_HOME, HADOOP_HOME required

heapsize() {
  echo " -Xms$1""m"" -Xmx$2""m "
}

#JAVA HOME dir
export JAVA_HOME=/usr/java/jdk1.6.0_06

#Neptune home dir
export NEPTUNE_HOME=/home/neptune

#Neptune conf dis
export NEPTUNE_CONF_DIR="${NEPTUNE_HOME}/conf"

# JVM Heap Size (MB) of each Neptune component
export NEPTUNE_MASTER_HEAPSIZE=`heapsize 512 1024`
export NEPTUNE_TABLETSERVER_HEAPSIZE=`heapsize 2048 2048`
export NEPTUNE_CHANGELOGSERVER_HEAPSIZE=`heapsize 512 512`

# TABLET_SERVER JMX Socket Port
export TABLETSERVER_JMX_PORT=58004

# Extra Java CLASSPATH elements.  Optional.
#export NEPTUNE_CLASSPATH=

# The directory where pid files are stored. /tmp by default.
export NEPTUNE_PID_DIR=~/.neptune_pids

# A string representing this instance of neptune. $USER by default.
# export NEPTUNE_IDENT_STRING=$USER

#ZooKeeper dir
#set neptune home dir
export ZOOKEEPER_HOME=/home/neptune
export ZOOKEEPER_CONF=${ZOOKEEPER_HOME}/conf/zoo.cfg

# Hadoop Home dir
export HADOOP_HOME=/home/hadoop

# Hadoop Conf dir
export HADOOP_CONF_DIR="${HADOOP_HOME}/conf"

# JVM Options of each Neptune component
export NEPTUNE_MASTERNODE_OPTS="$NEPTUNE_MASTER_HEAPSIZE -Dcom.sun.management.jmxremote"
export NEPTUNE_TABLETSERVER_OPTS="-XX:+UseConcMarkSweepGC -XX:+ExplicitGCInvokesConcurrent -XX:+CMSClassUnloadingEnabled -XX:CMSInitiatingOccupancyFraction=50 -server -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.port=$TABLETSERVER_JMX_PORT $NEPTUNE_TABLETSERVER_HEAPSIZE"
export NEPTUNE_CHANGELOG_OPTS="-XX:+UseConcMarkSweepGC -XX:+ExplicitGCInvokesConcurrent -XX:+CMSClassUnloadingEnabled -XX:CMSInitiatingOccupancyFraction=50 -server $NEPTUNE_CHANGELOGSERVER_HEAPSIZE"

# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial 
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
dataDir=/home/neptune/zookeeper/data
# the port at which the clients will connect
clientPort=2181      
			

[neptune@master]chmod 755 ./bin/*       
[neptune@master]chmod 755 ./conf/*.sh
[neptune@master]tar cvf neptune.tar conf lib bin neptune*.jar
[neptune@master]scp neptune.tar tabletserver_host01:/home/neptune/neptune.tar
[neptune@master]scp neptune.tar tabletserver_host02:/home/neptune/neptune.tar
...
[neptune@master]ssh tabletserver_host01
[neptune@tabletserver_host01]tar xf neptune.tar
[neptune@tabletserver_host01]exit
...
[neptune@master]ssh tabletserver_host02
[neptune@tabletserver_host02]tar xf neptune.tar

[neptune@master]./bin/zookeeper-start.sh
			

#start cluster
[neptune@master]./bin/start.sh

#format and start cluster 
[neptune@master]./bin/start.sh -format

#stop cluster
[neptune@master]./bin/stop.sh

#Run NeptuneMaster
[neptune@master]./bin/neptune-daemon.sh start neptunemaster

#Run TabletServer
[neptune@tabletserver_host01]./bin/neptune-daemon.sh start tabletserver