Starting Datameer at Boot Time

The following describes how to edit and set up the attached Datameer X startup script in CentOS 5.6. These should work the same on other Linux distributions.

An example of shell script code is below:

Prerequisites

Datameer X should be installed and running successfully. (i.e., <path to das>/bin/conductor.sh start)

Datameer

1. Create the script on the Linux machine.
2. Move the das.server script to /etc/init.d/. Note: These scripts should be owned by root:
3. Edit the das.server script:
   1. Change the value of DAS_HOME to the correct path
      1. export DAS_HOME=/opt/das
   2. Change DAS_USER to the same user that owns /opt/das directory and has been previously defined in das-env.sh
      1. export DAS_USER=datameer
   3. Change PID_PATH to a location where the das pid file can be stored.
      1. export PID_PATH=/var/lock/subsys
4. Add das server to the list of available services in Linux:
   1. chkconfig --add das.server
5. Check what init levels are active for Das:
   1. chkconfig --list |grep das.server (Notice init 3,4,5 have das “on”)

                das.server      0:off   1:off   2:off   3:on    4:on    5:on    6:off

This automates the start of Datameer X at bootup.

#!/bin/bash
#set -x
#
# Starts a Datameer X Server
# chkconfig: 345 90 10
# description: DAS Server

export DAS_HOME=/opt/das
export DAS_USER=das
export PID_PATH=/var/lock/subsys

#Source Function Library
. /etc/rc.d/init.d/functions

RETVAL=0
PIDFILE="/var/lock/subsys/das.pid"
desc="DAS Server daemon"
#######################################################################

start() {
  echo -n $"Starting $desc (DAS): "
  daemon --user $DAS_USER $DAS_HOME/bin/conductor.sh start /dev/null2>&1
  RETVAL=$?
  echo
  [ $RETVAL -eq 0 ] && touch $PID_PATH/das
  return $RETVAL
}

stop() {
  echo -n $"Stopping $desc (DAS): "
  daemon --user $DAS_USER $DAS_HOME/bin/conductor.sh stop
  RETVAL=$?
  sleep 5
  echo
  [ $RETVAL -eq 0 ] && rm -f $PID_PATH/das $PIDFILE
}

checkstatus(){
  ps |grep das
}

restart() {
  stop
  start
}

case "$1" in
  start)
    start
    ;;
  stop)
    stop
    ;;
  status)
    checkstatus
    ;;
  restart)
    restart
    ;;
  *)
    echo $"Usage: $0 {start|stop|status|restart}"
    exit 1
esac

exit $RETVAL