Starts and stops the Apache Zeppelin application with a standalone Apache Spark cluster

zeppelin_manage.sh

#!/bin/bash

# Configuration
WAIT_SECONDS=2

function start() {
    echo
    echo "=> Starting spark Master <="
    echo
    sh ${SPARK_HOME}/sbin/start-master.sh > /dev/null 2>&1
    sleep $WAIT_SECONDS
    echo
    echo "=> Starting spark slave <="
    echo
    sh ${SPARK_HOME}/sbin/start-slave.sh spark://localhost:7077 > /dev/null 2>&1
    sleep $WAIT_SECONDS
    echo
    echo "=> Starting Zeppelin <="
    echo
    sh ${ZEPPELIN_HOME}/bin/zeppelin-daemon.sh start > /dev/null 2>&1
    echo
    echo "=> Spark Standalone Cluster and Zeppelin startet <="
    echo
}

function stop() {
    echo
    echo "=> Stoping Zeppelin <="
    echo
    sh ${ZEPPELIN_HOME}/bin/zeppelin-daemon.sh stop > /dev/null 2>&1    
    sleep $WAIT_SECONDS
    echo
    echo "=> Stoping spark slave <="
    echo
    sh ${SPARK_HOME}/sbin/stop-slave.sh spark://localhost:7077 > /dev/null 2>&1
    sleep $WAIT_SECONDS
    echo
    echo "=> Stoping spark Master <="
    echo
    sh ${SPARK_HOME}/sbin/stop-master.sh > /dev/null 2>&1
    echo    
    echo "=> Spark Standalone Cluster and Zeppelin stopped <="
    echo
}

case "${1}" in
  start)
    start
    ;;
  stop)
    stop
    ;;  
  *)
    echo ${USAGE}
esac