onos.sh - spring-open - Gitiles

 #!/bin/bash

 ### Env vars used by this script. (default value) ###
 # $ONOS_HOME       : path of root directory of ONOS repository (this script's dir)
 # $ONOS_CONF_DIR   : path of ONOS config directory (~/ONOS/conf)
 # $ONOS_CONF       : path of ONOS node config file (~/ONOS/conf/onos_node.conf)
 # $ONOS_PROPS      : path of ONOS properties file (~/ONOS/conf/onos.properties)
 # $ONOS_LOGBACK    : path of logback config file (~/ONOS/conf/logback.`hostname`.xml)
 # $LOGDIR          : path of log output directory (~/ONOS/onos-logs)
 # $LOGBASE         : base name of log output file (onos.`hostname`)
 # $RAMCLOUD_HOME   : path of root directory of RAMCloud repository (~/ramcloud)
 # $RAMCLOUD_BRANCH : branch name of RAMCloud to use (master)
 # $JVM_OPTS        : JVM options ONOS starts with
 #####################################################


 ### Variables read from ONOS config file ###
 ONOS_HOME=${ONOS_HOME:-$(cd `dirname $0`; pwd)}
 ONOS_CONF_DIR=${ONOS_CONF_DIR:-${ONOS_HOME}/conf}
 ONOS_CONF=${ONOS_CONF:-${ONOS_CONF_DIR}/onos_node.conf}

 if [ ! -f ${ONOS_CONF} ]; then
   echo "${ONOS_CONF} not found."
   exit 1
 fi
 ONOS_HOST_NAME=`grep ^host.name ${ONOS_CONF} | cut -d "=" -f 2 | sed -e 's/^[ \t]*//'`
 if [ -z "${ONOS_HOST_NAME}" ]; then
   ONOS_HOST_NAME=`hostname`
 fi
 ONOS_HOST_IP=`grep ^host.ip ${ONOS_CONF} | cut -d "=" -f 2 | sed -e 's/^[ \t]*//'`
 ONOS_HOST_ROLE=`grep ^host.role ${ONOS_CONF} | cut -d "=" -f 2 | sed -e 's/^[ \t]*//'`
 ONOS_HOST_BACKEND=`grep ^host.backend ${ONOS_CONF} | cut -d "=" -f 2 | sed -e 's/^[ \t]*//'`
 ZK_HOSTS=`grep ^zookeeper.hosts ${ONOS_CONF} | cut -d "=" -f 2 | sed -e 's/^[ \t]*//'`
 RC_COORD_PROTOCOL=`grep ^ramcloud.coordinator.protocol ${ONOS_CONF} | cut -d "=" -f 2 | sed -e 's/^[ \t]*//'`
 RC_COORD_IP=`grep ^ramcloud.coordinator.ip ${ONOS_CONF} | cut -d "=" -f 2 | sed -e 's/^[ \t]*//'`
 RC_COORD_PORT=`grep ^ramcloud.coordinator.port ${ONOS_CONF} | cut -d "=" -f 2 | sed -e 's/^[ \t]*//'`
 RC_SERVER_PROTOCOL=`grep ^ramcloud.server.protocol ${ONOS_CONF} | cut -d "=" -f 2 | sed -e 's/^[ \t]*//'`
 RC_SERVER_IP=`grep ^ramcloud.server.ip ${ONOS_CONF} | cut -d "=" -f 2 | sed -e 's/^[ \t]*//'`
 RC_SERVER_PORT=`grep ^ramcloud.server.port ${ONOS_CONF} | cut -d "=" -f 2 | sed -e 's/^[ \t]*//'`
 ############################################


 ############## Other variables #############
 LOGDIR=${ONOS_LOGDIR:-${ONOS_HOME}/onos-logs}

 ZK_DIR=${HOME}/zookeeper-3.4.5
 ZK_CONF_FILE=zoo.cfg
 ZK_CONF=${ONOS_CONF_DIR}/${ZK_CONF_FILE}
 ZK_CONF_BACKUP=${ZK_CONF}.bak
 ZK_CONF_TEMPLATE=${ONOS_CONF_DIR}/zoo.cfg.template
 ZOO_LOG_DIR=${ONOS_HOME}/onos-logs
 ZK_LIB_DIR=/var/lib/zookeeper
 ZK_MY_ID=${ZK_LIB_DIR}/myid

 RAMCLOUD_DIR=${HOME}/ramcloud
 RAMCLOUD_HOME=${RAMCLOUD_HOME:-~/ramcloud}
 RAMCLOUD_COORD_LOG=${LOGDIR}/ramcloud.coordinator.${ONOS_HOST_NAME}.log
 RAMCLOUD_SERVER_LOG=${LOGDIR}/ramcloud.server.${ONOS_HOST_NAME}.log
 RAMCLOUD_BRANCH=${RAMCLOUD_BRANCH:-master}
 RAMCLOUD_COORD_PORT=12246
 RAMCLOUD_SERVER_PORT=12242

 export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${ONOS_HOME}/lib:${RAMCLOUD_HOME}/obj.${RAMCLOUD_BRANCH}

 ## Because the script change dir to $ONOS_HOME, we can set ONOS_LOGBACK and LOGDIR relative to $ONOS_HOME
 ONOS_LOGBACK=${ONOS_LOGBACK:-${ONOS_CONF_DIR}/logback.${ONOS_HOST_NAME}.xml}
 ONOS_LOGBACK_BACKUP=${ONOS_LOGBACK}.bak
 ONOS_LOGBACK_TEMPLATE=${ONOS_CONF_DIR}/logback.xml.template
 LOGDIR=${ONOS_LOGDIR:-${ONOS_HOME}/onos-logs}
 LOGBASE=${ONOS_LOGBASE:-onos.${ONOS_HOST_NAME}}
 ONOS_LOG="${LOGDIR}/${LOGBASE}.log"
 PCAP_LOG="${LOGDIR}/${LOGBASE}.pcap"
 LOGS="$ONOS_LOG $PCAP_LOG"

 ONOS_PROPS=${ONOS_PROPS:-${ONOS_CONF_DIR}/onos.properties}
 JMX_PORT=${JMX_PORT:-7189}

 # Set JVM options
 JVM_OPTS="${JVM_OPTS:-}"
 JVM_OPTS="$JVM_OPTS -server -d64"
 #JVM_OPTS="$JVM_OPTS -XX:+TieredCompilation -XX:InitialCodeCacheSize=512m -XX:ReservedCodeCacheSize=512m"

 # Uncomment or specify appropriate value as JVM_OPTS environment variables.
 #JVM_OPTS="$JVM_OPTS -Xmx4g -Xms4g -Xmn800m"
 #JVM_OPTS="$JVM_OPTS -Xmx2g -Xms2g -Xmn800m"
 #JVM_OPTS="$JVM_OPTS -Xmx1g -Xms1g -Xmn800m"

 #JVM_OPTS="$JVM_OPTS -XX:+UseParallelGC"
 JVM_OPTS="$JVM_OPTS -XX:+UseConcMarkSweepGC"
 JVM_OPTS="$JVM_OPTS -XX:+AggressiveOpts"

 # We may want to remove UseFastAccessorMethods option: http://bugs.java.com/view_bug.do?bug_id=6385687
 JVM_OPTS="$JVM_OPTS -XX:+UseFastAccessorMethods"

 JVM_OPTS="$JVM_OPTS -XX:MaxInlineSize=8192"
 JVM_OPTS="$JVM_OPTS -XX:FreqInlineSize=8192"
 JVM_OPTS="$JVM_OPTS -XX:CompileThreshold=1500"

 JVM_OPTS="$JVM_OPTS -XX:OnError=crash-logger" ;# For dumping core

 # Workaround for Thread Priority http://tech.stolsvik.com/2010/01/linux-java-thread-priorities-workaround.html
 JVM_OPTS="$JVM_OPTS -XX:+UseThreadPriorities -XX:ThreadPriorityPolicy=42"

 JVM_OPTS="$JVM_OPTS -XX:+UseCompressedOops"

 JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.port=$JMX_PORT"
 JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.ssl=false"
 JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.authenticate=false"

 JVM_OPTS="$JVM_OPTS -Dhazelcast.logging.type=slf4j"

 # Uncomment to dump final JVM flags to stdout
 #JVM_OPTS="$JVM_OPTS -XX:+PrintFlagsFinal"

 # Set ONOS core main class
 MAIN_CLASS="net.onrc.onos.core.main.Main"

 MVN=${MVN:-mvn -o}
 ############################################


 ############# Common functions #############
 function print_usage {
   local filename=`basename ${ONOS_CONF}`
   local usage="Usage: setup/start/stop ONOS on this server.
  \$ $0 setup [-f]
     Set up ONOS node using ${filename}.
       - generate and replace config file of ZooKeeper.
       - create myid in ZooKeeper datadir.
       - generate and replace logback.${ONOS_HOST_NAME}.xml
     If -f option is used, all existing files will be overwritten without confirmation.
  \$ $0 start [single-node|coord-node|server-node|coord-and-server-node]
     Start ONOS node with specific RAMCloud entities
       - single-node: start ONOS with stand-alone RAMCloud
       - coord-node : start ONOS with RAMCloud coordinator
       - server-node: start ONOS with RAMCloud server
       - coord-and-server-node: start ONOS with RAMCloud coordinator and server
       * Default behavior can be defined by ${filename}
  \$ $0 stop
     Stop all ONOS-related processes
  \$ $0 restart
     Stop and start currently running ONOS-related processes
  \$$0 status
     Show status of ONOS-related processes
  \$ $0 {zk|rc-coord|rc-server|core} {start|stop|restart|status}
     Control specific ONOS-related process"

   echo "${usage}"
 }

 function rotate-log {
     local logfile=$1
     local nr_max=${2:-10}
     if [ -f $logfile ]; then
 	for i in `seq $(expr $nr_max - 1) -1 1`; do
 	    if [ -f ${logfile}.${i} ]; then
 		mv -f ${logfile}.${i} ${logfile}.`expr $i + 1`
 	    fi
 	done
 	mv $logfile $logfile.1
     fi
 }

 # kill-processes {module-name} {array of pids}
 function kill-processes {
   # Kill the existing processes
   local pids=$2
   if [ ! -z "$pids" ]; then
     echo -n "Stopping $1 ... "
   fi
   for p in ${pids}; do
     if [ x$p != "x" ]; then
       kill -KILL $p
       echo "Killed existing process (pid: $p)"
     fi
   done
 }

 function revert-conf {
   set -e

   echo -n "ERROR occurred ... "
   local temp_zk="${ZK_CONF}.tmp"

   if [ -f "${temp_zk}" ]; then
     local zk_file=`basename ${ZK_CONF}`
     echo -n "reverting ${zk_file} ... "
     rm ${temp_zk}
     mv ${ZK_CONF_BACKUP} ${ZK_CONF}
   fi

   echo "EXIT"

   if [ ! -z "$1" ]; then
     echo $1
   fi

   set +e

   exit 1
 }

 function create-zk-conf {
   echo -n "Creating ${ZK_CONF} ... "

   # creation of zookeeper config

   local temp_zk="${ZK_CONF}.tmp"
   touch ${temp_zk}

   if [ -f ${ZK_CONF} ]; then
     mv ${ZK_CONF} ${ZK_CONF_BACKUP}
     local backup_file=`basename ${ZK_CONF_BACKUP}`
     echo -n "backup old file to ${backup_file} ... "
   fi

   local hosts=${ZK_HOSTS}
   if [ -z "${hosts}" ]; then
     # assume single-node mode
     hosts=${ONOS_HOST_NAME}
   fi

   hostarr=`echo ${hosts} | tr "," " "`

   local i=1
   local myid=
   for host in ${hostarr}; do
     if [ ${host} = ${ONOS_HOST_NAME} ]; then
       myid=$i
       break
     fi
     i=`expr $i + 1`
   done

   if [ -z "${myid}" ]; then
     local filename=`basename ${ONOS_CONF}`
     revert-conf "[ERROR in ${filename}] zookeeper.hosts must have hostname \"${ONOS_HOST_NAME}\""
   fi

   # TODO: Remove sudo.
   # This is temporary code for the sake of compatibility with old code (which creates myid with root user).
   sudo mv ${ZK_MY_ID} ${ZK_MY_ID}.old
   echo ${myid} > ${ZK_MY_ID}

   echo -n "myid is assigned to ${myid} ... "

   while read line; do
     if [[ $line =~ ^__HOSTS__$ ]]; then
       i=1
       for host in ${hostarr}; do
         # TODO: ports might be configurable
         local hostline="server.${i}=${host}:2888:3888"
         echo $hostline >> "${temp_zk}"
         i=`expr $i + 1`
       done
     elif [[ $line =~ __DATADIR__ ]]; then
       echo $line | sed -e "s|__DATADIR__|${ZK_LIB_DIR}|" >> ${temp_zk}
     else
       echo $line >> ${temp_zk}
     fi
   done < ${ZK_CONF_TEMPLATE}
   mv ${temp_zk} ${ZK_CONF}

   echo "DONE"
 }

 function create-logback-conf {
   echo -n "Creating ${ONOS_LOGBACK} ... "

   # creation of logback config
   if [ -f $ONOS_LOGBACK ]; then
     local logback_file=`basename ${ONOS_LOGBACK}`
     mv ${ONOS_LOGBACK} ${ONOS_LOGBACK_BACKUP}
     local logback_back_file=`basename ${ONOS_LOGBACK_BACKUP}`
     echo -n "backup old file to ${logback_back_file} ... "
   fi
   sed -e "s|__FILENAME__|${ONOS_LOG}|" ${ONOS_LOGBACK_TEMPLATE} > ${ONOS_LOGBACK}

   echo "DONE"
 }

 function create-conf {
   local key
   local filename

   trap revert-conf ERR

   if [ -f ${ZK_CONF} -a "$1" != "-f" ]; then
     # confirmation to overwrite existing config file
     echo -n "Overwriting ${ZK_CONF_FILE} [Y/n]? "
     while [ 1 ]; do
       read key
       if [ -z "${key}" -o "${key}" == "Y" ]; then
         create-zk-conf
         break
       elif [ "${key}" == "n" ]; then
         break
       fi
       echo "[Y/n]?"
     done
   else
     create-zk-conf
   fi

   if [ -f ${ONOS_LOGBACK} -a "$1" != "-f" ]; then
     filename=`basename ${ONOS_LOGBACK}`
     echo -n "Overwriting ${filename} [Y/n]? "
     while [ 1 ]; do
       read key
       if [ -z "${key}" -o "${key}" == "Y" ]; then
         create-logback-conf
         break
       elif [ "${key}" == "n" ]; then
         break
       fi
       echo "[Y/n]?"
     done
   else
     create-logback-conf
   fi

   trap - ERR
 }
 ############################################


 ###### Functions related to ZooKeeper ######
 function zk {
   case "$1" in
     start)
       start-zk
       ;;
     stop)
       stop-zk
       ;;
     stat*) # <- status
       status-zk
       ;;
     re*)   # <- restart
       stop-zk
       start-zk
       ;;
     *)
       print_usage
       exit 1
   esac
 }

 function start-zk {
   echo -n "Starting Zookeeper ... "

   if [ -f "${ZK_CONF}" ]; then
     # Run Zookeeper with our configuration
     export ZOOCFG=${ZK_CONF_FILE}
     export ZOOCFGDIR=${ONOS_CONF_DIR}
   fi

   $ZK_DIR/bin/zkServer.sh start
 }

 function stop-zk {
   kill-processes "ZooKeeper" `jps -l | grep org.apache.zookeeper.server | awk '{print $1}'`
 }

 function status-zk {
   if [ -f ${ZK_CONF} ]; then
     export ZOOCFG=${ZK_CONF_FILE}
     export ZOOCFGDIR=${ONOS_CONF_DIR}
   fi

   $ZK_DIR/bin/zkServer.sh status
 }
 ############################################


 ####### Functions related to RAMCloud ######
 function start-backend {
   if [ "${ONOS_HOST_BACKEND}" = "ramcloud" ]; then
     if [ $1 == "coord" ]; then
       rc-coord startifdown
     elif [ $1 == "server" ]; then
       rc-server startifdown
     fi
   fi
 }

 function stop-backend {
   rcsn=`pgrep -f obj.${RAMCLOUD_BRANCH}/server | wc -l`
   if [ $rcsn != 0 ]; then
     rc-server stop
   fi

   rccn=`pgrep -f obj.${RAMCLOUD_BRANCH}/coordinator | wc -l`
   if [ $rccn != 0 ]; then
     rc-coord stop
   fi
 }

 function deldb {
 # TODO: implement
   return
 }


 ### Functions related to RAMCloud coordinator
 function rc-coord-addr {
   local coordproto=${RC_COORD_PROTOCOL}
   local coordip=${RC_COORD_IP}
   local coordport=${RC_COORD_PORT}

   if [ -z "${coordproto}" ]; then
     coordproto='fast+udp'
   fi

   if [ -z "${coordip}" ]; then
     # assume single-node mode
     coordip=${ONOS_HOST_IP}
   fi

   if [ -z "${coordport}" ]; then
     # assume default port
     coordport=${RAMCLOUD_COORD_PORT}
   fi

   echo "${coordproto}:host=${coordip},port=${coordport}"
 }

 function rc-server-addr {
   local serverproto=${RC_SERVER_PROTOCOL}
   local serverip=${RC_SERVER_IP}
   local serverport=${RC_SERVER_PORT}

   if [ -z "${serverproto}" ]; then
     serverproto='fast+udp'
   fi

   # Normally this parameter should be null
   if [ -z "${serverip}" ]; then
     serverip=${ONOS_HOST_IP}
   fi

   if [ -z "${serverport}" ]; then
     # assume default port
     serverport=${RAMCLOUD_SERVER_PORT}
   fi

   echo "${serverproto}:host=${serverip},port=${serverport}"
 }

 function rc-coord {
   case "$1" in
     start)
       deldb
       stop-coord
       start-coord
       ;;
     startifdown)
       local n=`pgrep -f obj.${RAMCLOUD_BRANCH}/coordinator | wc -l`
       if [ $n == 0 ]; then
         start-coord
       else
         echo "$n instance of RAMCloud coordinator running"
       fi
       ;;
     stop)
       stop-coord
       ;;
     stat*) # <- status
       local n=`pgrep -f obj.${RAMCLOUD_BRANCH}/coordinator | wc -l`
       echo "$n RAMCloud coordinator running"
       ;;
     *)
       print_usage
       exit 1
   esac
 }

 function start-coord {
   if [ ! -d ${LOGDIR} ]; then
     mkdir -p ${LOGDIR}
   fi
   if [ -f $RAMCLOUD_COORD_LOG ]; then
     rotate-log $RAMCLOUD_COORD_LOG
   fi

   local coord_addr=`rc-coord-addr`

   # Run ramcloud
   echo -n "Starting RAMCloud coordinator ... "
   $RAMCLOUD_DIR/obj.${RAMCLOUD_BRANCH}/coordinator -L ${coord_addr} > $RAMCLOUD_COORD_LOG 2>&1 &
   echo "STARTED"
 }


 function stop-coord {
   kill-processes "RAMCloud coordinator" `pgrep -f obj.${RAMCLOUD_BRANCH}/coordinator`
 }

 ### Functions related to RAMCloud server
 function rc-server {
   case "$1" in
     start)
       deldb
       stop-server
       start-server
       ;;
     startifdown)
       local n=`pgrep -f obj.${RAMCLOUD_BRANCH}/server | wc -l`
       if [ $n == 0 ]; then
         start-server
       else
         echo "$n instance of RAMCloud server running"
       fi
       ;;
     stop)
       stop-server
       ;;
 #    deldb)
 #      deldb
 #      ;;
     stat*) # <- status
       n=`pgrep -f obj.${RAMCLOUD_BRANCH}/server | wc -l`
       echo "$n RAMCloud server running"
       ;;
     *)
       print_usage
       exit 1
   esac
 }

 function start-server {
   if [ ! -d ${LOGDIR} ]; then
     mkdir -p ${LOGDIR}
   fi
   if [ -f $RAMCLOUD_SERVER_LOG ]; then
     rotate-log $RAMCLOUD_SERVER_LOG
   fi

   local coord_addr=`rc-coord-addr`
   local server_addr=`rc-server-addr`

   # Run ramcloud
   echo -n "Starting RAMCloud server ... "
   ${RAMCLOUD_DIR}/obj.${RAMCLOUD_BRANCH}/server -M -L ${server_addr} -C ${coord_addr} --masterServiceThreads 1 --logCleanerThreads 1 --detectFailures 0 > $RAMCLOUD_SERVER_LOG 2>&1 &
   echo "STARTED"
 }

 function stop-server {
   kill-processes "RAMCloud server" `pgrep -f obj.${RAMCLOUD_BRANCH}/server`
 }
 ############################################


 ## Functions related to ONOS core process ##
 function onos {
   CPFILE=${ONOS_HOME}/.javacp.${ONOS_HOST_NAME}
   if [ ! -f ${CPFILE} ]; then
     echo "ONOS core needs to be built"
     ${MVN} -f ${ONOS_HOME}/pom.xml compile
   fi
   JAVA_CP=`cat ${CPFILE}`
   JAVA_CP="${JAVA_CP}:${ONOS_HOME}/target/classes"

   case "$1" in
     start)
       stop-onos
       start-onos
       ;;
     startnokill)
       start-onos
       ;;
     startifdown)
       n=`jps -l | grep "${MAIN_CLASS}" | wc -l`
       if [ $n == 0 ]; then
         start-onos
       else
         echo "$n instance of onos running"
       fi
       ;;
     stop)
       stop-onos
       ;;
     stat*) # <- status
       n=`jps -l | grep "${MAIN_CLASS}" | wc -l`
       echo "$n instance of onos running"
       ;;
     *)
       print_usage
       exit 1
   esac
 }

 function start-onos {
   if [ ! -d ${LOGDIR} ]; then
     mkdir -p ${LOGDIR}
   fi
   # Backup log files
   for log in ${LOGS}; do
     if [ -f ${log} ]; then
       rotate-log ${log}
     fi
   done

   if [ ! -f ${ONOS_LOGBACK} ]; then
     echo "[WARNING] ${ONOS_LOGBACK} not found."
     echo "          Run \"\$ $0 setup\" to create."
     exit 1
   fi

   JVM_OPTS="${JVM_OPTS} -Dnet.onrc.onos.datastore.backend=${ONOS_HOST_BACKEND}"

   # Run ONOS

   echo -n "Starting ONOS controller ..."
   java ${JVM_OPTS} -Dlogback.configurationFile=${ONOS_LOGBACK} -cp ${JAVA_CP} ${MAIN_CLASS} -cf ${ONOS_PROPS} > ${LOGDIR}/${LOGBASE}.stdout 2>${LOGDIR}/${LOGBASE}.stderr &

   # We need to wait a bit to find out whether starting the ONOS process succeeded
   sleep 1

   n=`jps -l |grep "${MAIN_CLASS}" | wc -l`
   if [ $n -ge 1 ]; then
     echo " STARTED"
   else
     echo " FAILED"
   fi

 #  echo "java ${JVM_OPTS} -Dlogback.configurationFile=${ONOS_LOGBACK} -jar ${ONOS_JAR} -cf ./onos.properties > /dev/null 2>&1 &"
 #  sudo -b /usr/sbin/tcpdump -n -i eth0 -s0 -w ${PCAP_LOG} 'tcp port 6633' > /dev/null  2>&1
 }

 function stop-onos {
   kill-processes "ONOS controller" `jps -l | grep ${MAIN_CLASS} | awk '{print $1}'`
 #  kill-processes "tcpdump" `ps -edalf |grep tcpdump |grep ${PCAP_LOG} | awk '{print $4}'`
 }
 ############################################


 ################## Main ####################
 case "$1" in
   setup)
     create-conf $2
     ;;
   start)
     mode_parameter=${ONOS_HOST_ROLE}
     if [ ! -z "$2" ]; then
       mode_parameter=$2
     fi

     case "${mode_parameter}" in
       single-node)
         zk start
         start-backend coord
         start-backend server
         onos startifdown
         ;;
       coord-node)
         zk start
         start-backend coord
         onos startifdown
         ;;
       server-node)
         zk start
         start-backend server
         onos startifdown
         ;;
       coord-and-server-node)
         zk start
         start-backend coord
         start-backend server
         onos startifdown
         ;;
       *)
         print_usage
         ;;
       esac
     echo
     ;;
   stop)
     on=`jps -l | grep "${MAIN_CLASS}" | wc -l`
     if [ $on != 0 ]; then
       onos stop
     fi

     stop-backend

     zkn=`jps -l | grep org.apache.zookeeper.server | wc -l`
     if [ $zkn != 0 ]; then
       zk stop
     fi
     echo
     ;;
   restart)
     on=`jps -l | grep "${MAIN_CLASS}" | wc -l`
     if [ $on != 0 ]; then
       onos stop
     fi

     rcsn=`pgrep -f obj.${RAMCLOUD_BRANCH}/server | wc -l`
     if [ $rcsn != 0 ]; then
       rc-server stop
     fi

     rccn=`pgrep -f obj.${RAMCLOUD_BRANCH}/coordinator | wc -l`
     if [ $rccn != 0 ]; then
       rc-coord stop
     fi

     zkn=`jps -l | grep org.apache.zookeeper.server | wc -l`
     if [ $zkn != 0 ]; then
       zk restart
     fi

     if [ $rccn != 0 ]; then
       rc-coord startifdown
     fi

     if [ $rcsn != 0 ]; then
       rc-server startifdown
     fi

     if [ $on != 0 ]; then
       onos startifdown
     fi
     echo
     ;;
   stat*) # <- status
     echo '[ZooKeeper]'
     zk status
     echo
     echo '[RAMCloud coordinator]'
     rc-coord status
     echo
     echo '[RAMCloud server]'
     rc-server status
     echo
     echo '[ONOS core]'
     onos status
     echo
     ;;
   zk)
     zk $2
     ;;
   rc-c*) # <- rc-coordinator
     rc-coord $2
     ;;
   rc-s*) # <- rc-server
     rc-server $2
     ;;
   core)
     onos $2
     ;;
   *)
     print_usage
     exit 1
 esac
	#!/bin/bash

	### Env vars used by this script. (default value) ###
	# $ONOS_HOME : path of root directory of ONOS repository (this script's dir)
	# $ONOS_CONF_DIR : path of ONOS config directory (~/ONOS/conf)
	# $ONOS_CONF : path of ONOS node config file (~/ONOS/conf/onos_node.conf)
	# $ONOS_PROPS : path of ONOS properties file (~/ONOS/conf/onos.properties)
	# $ONOS_LOGBACK : path of logback config file (~/ONOS/conf/logback.`hostname`.xml)
	# $LOGDIR : path of log output directory (~/ONOS/onos-logs)
	# $LOGBASE : base name of log output file (onos.`hostname`)
	# $RAMCLOUD_HOME : path of root directory of RAMCloud repository (~/ramcloud)
	# $RAMCLOUD_BRANCH : branch name of RAMCloud to use (master)
	# $JVM_OPTS : JVM options ONOS starts with
	#####################################################


	### Variables read from ONOS config file ###
	ONOS_HOME=${ONOS_HOME:-$(cd `dirname $0`; pwd)}
	ONOS_CONF_DIR=${ONOS_CONF_DIR:-${ONOS_HOME}/conf}
	ONOS_CONF=${ONOS_CONF:-${ONOS_CONF_DIR}/onos_node.conf}

	if [ ! -f ${ONOS_CONF} ]; then
	echo "${ONOS_CONF} not found."
	exit 1
	fi
	ONOS_HOST_NAME=`grep ^host.name ${ONOS_CONF} \| cut -d "=" -f 2 \| sed -e 's/^[ \t]*//'`
	if [ -z "${ONOS_HOST_NAME}" ]; then
	ONOS_HOST_NAME=`hostname`
	fi
	ONOS_HOST_IP=`grep ^host.ip ${ONOS_CONF} \| cut -d "=" -f 2 \| sed -e 's/^[ \t]*//'`
	ONOS_HOST_ROLE=`grep ^host.role ${ONOS_CONF} \| cut -d "=" -f 2 \| sed -e 's/^[ \t]*//'`
	ONOS_HOST_BACKEND=`grep ^host.backend ${ONOS_CONF} \| cut -d "=" -f 2 \| sed -e 's/^[ \t]*//'`
	ZK_HOSTS=`grep ^zookeeper.hosts ${ONOS_CONF} \| cut -d "=" -f 2 \| sed -e 's/^[ \t]*//'`
	RC_COORD_PROTOCOL=`grep ^ramcloud.coordinator.protocol ${ONOS_CONF} \| cut -d "=" -f 2 \| sed -e 's/^[ \t]*//'`
	RC_COORD_IP=`grep ^ramcloud.coordinator.ip ${ONOS_CONF} \| cut -d "=" -f 2 \| sed -e 's/^[ \t]*//'`
	RC_COORD_PORT=`grep ^ramcloud.coordinator.port ${ONOS_CONF} \| cut -d "=" -f 2 \| sed -e 's/^[ \t]*//'`
	RC_SERVER_PROTOCOL=`grep ^ramcloud.server.protocol ${ONOS_CONF} \| cut -d "=" -f 2 \| sed -e 's/^[ \t]*//'`
	RC_SERVER_IP=`grep ^ramcloud.server.ip ${ONOS_CONF} \| cut -d "=" -f 2 \| sed -e 's/^[ \t]*//'`
	RC_SERVER_PORT=`grep ^ramcloud.server.port ${ONOS_CONF} \| cut -d "=" -f 2 \| sed -e 's/^[ \t]*//'`
	############################################


	############## Other variables #############
	LOGDIR=${ONOS_LOGDIR:-${ONOS_HOME}/onos-logs}

	ZK_DIR=${HOME}/zookeeper-3.4.5
	ZK_CONF_FILE=zoo.cfg
	ZK_CONF=${ONOS_CONF_DIR}/${ZK_CONF_FILE}
	ZK_CONF_BACKUP=${ZK_CONF}.bak
	ZK_CONF_TEMPLATE=${ONOS_CONF_DIR}/zoo.cfg.template
	ZOO_LOG_DIR=${ONOS_HOME}/onos-logs
	ZK_LIB_DIR=/var/lib/zookeeper
	ZK_MY_ID=${ZK_LIB_DIR}/myid

	RAMCLOUD_DIR=${HOME}/ramcloud
	RAMCLOUD_HOME=${RAMCLOUD_HOME:-~/ramcloud}
	RAMCLOUD_COORD_LOG=${LOGDIR}/ramcloud.coordinator.${ONOS_HOST_NAME}.log
	RAMCLOUD_SERVER_LOG=${LOGDIR}/ramcloud.server.${ONOS_HOST_NAME}.log
	RAMCLOUD_BRANCH=${RAMCLOUD_BRANCH:-master}
	RAMCLOUD_COORD_PORT=12246
	RAMCLOUD_SERVER_PORT=12242

	export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${ONOS_HOME}/lib:${RAMCLOUD_HOME}/obj.${RAMCLOUD_BRANCH}

	## Because the script change dir to $ONOS_HOME, we can set ONOS_LOGBACK and LOGDIR relative to $ONOS_HOME
	ONOS_LOGBACK=${ONOS_LOGBACK:-${ONOS_CONF_DIR}/logback.${ONOS_HOST_NAME}.xml}
	ONOS_LOGBACK_BACKUP=${ONOS_LOGBACK}.bak
	ONOS_LOGBACK_TEMPLATE=${ONOS_CONF_DIR}/logback.xml.template
	LOGDIR=${ONOS_LOGDIR:-${ONOS_HOME}/onos-logs}
	LOGBASE=${ONOS_LOGBASE:-onos.${ONOS_HOST_NAME}}
	ONOS_LOG="${LOGDIR}/${LOGBASE}.log"
	PCAP_LOG="${LOGDIR}/${LOGBASE}.pcap"
	LOGS="$ONOS_LOG $PCAP_LOG"

	ONOS_PROPS=${ONOS_PROPS:-${ONOS_CONF_DIR}/onos.properties}
	JMX_PORT=${JMX_PORT:-7189}

	# Set JVM options
	JVM_OPTS="${JVM_OPTS:-}"
	JVM_OPTS="$JVM_OPTS -server -d64"
	#JVM_OPTS="$JVM_OPTS -XX:+TieredCompilation -XX:InitialCodeCacheSize=512m -XX:ReservedCodeCacheSize=512m"

	# Uncomment or specify appropriate value as JVM_OPTS environment variables.
	#JVM_OPTS="$JVM_OPTS -Xmx4g -Xms4g -Xmn800m"
	#JVM_OPTS="$JVM_OPTS -Xmx2g -Xms2g -Xmn800m"
	#JVM_OPTS="$JVM_OPTS -Xmx1g -Xms1g -Xmn800m"

	#JVM_OPTS="$JVM_OPTS -XX:+UseParallelGC"
	JVM_OPTS="$JVM_OPTS -XX:+UseConcMarkSweepGC"
	JVM_OPTS="$JVM_OPTS -XX:+AggressiveOpts"

	# We may want to remove UseFastAccessorMethods option: http://bugs.java.com/view_bug.do?bug_id=6385687
	JVM_OPTS="$JVM_OPTS -XX:+UseFastAccessorMethods"

	JVM_OPTS="$JVM_OPTS -XX:MaxInlineSize=8192"
	JVM_OPTS="$JVM_OPTS -XX:FreqInlineSize=8192"
	JVM_OPTS="$JVM_OPTS -XX:CompileThreshold=1500"

	JVM_OPTS="$JVM_OPTS -XX:OnError=crash-logger" ;# For dumping core

	# Workaround for Thread Priority http://tech.stolsvik.com/2010/01/linux-java-thread-priorities-workaround.html
	JVM_OPTS="$JVM_OPTS -XX:+UseThreadPriorities -XX:ThreadPriorityPolicy=42"

	JVM_OPTS="$JVM_OPTS -XX:+UseCompressedOops"

	JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.port=$JMX_PORT"
	JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.ssl=false"
	JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.authenticate=false"

	JVM_OPTS="$JVM_OPTS -Dhazelcast.logging.type=slf4j"

	# Uncomment to dump final JVM flags to stdout
	#JVM_OPTS="$JVM_OPTS -XX:+PrintFlagsFinal"

	# Set ONOS core main class
	MAIN_CLASS="net.onrc.onos.core.main.Main"

	MVN=${MVN:-mvn -o}
	############################################


	############# Common functions #############
	function print_usage {
	local filename=`basename ${ONOS_CONF}`
	local usage="Usage: setup/start/stop ONOS on this server.
	\$ $0 setup [-f]
	Set up ONOS node using ${filename}.
	- generate and replace config file of ZooKeeper.
	- create myid in ZooKeeper datadir.
	- generate and replace logback.${ONOS_HOST_NAME}.xml
	If -f option is used, all existing files will be overwritten without confirmation.
	\$ $0 start [single-node\|coord-node\|server-node\|coord-and-server-node]
	Start ONOS node with specific RAMCloud entities
	- single-node: start ONOS with stand-alone RAMCloud
	- coord-node : start ONOS with RAMCloud coordinator
	- server-node: start ONOS with RAMCloud server
	- coord-and-server-node: start ONOS with RAMCloud coordinator and server
	* Default behavior can be defined by ${filename}
	\$ $0 stop
	Stop all ONOS-related processes
	\$ $0 restart
	Stop and start currently running ONOS-related processes
	\$$0 status
	Show status of ONOS-related processes
	\$ $0 {zk\|rc-coord\|rc-server\|core} {start\|stop\|restart\|status}
	Control specific ONOS-related process"

	echo "${usage}"
	}

	function rotate-log {
	local logfile=$1
	local nr_max=${2:-10}
	if [ -f $logfile ]; then
	for i in `seq $(expr $nr_max - 1) -1 1`; do
	if [ -f ${logfile}.${i} ]; then
	mv -f ${logfile}.${i} ${logfile}.`expr $i + 1`
	fi
	done
	mv $logfile $logfile.1
	fi
	}

	# kill-processes {module-name} {array of pids}
	function kill-processes {
	# Kill the existing processes
	local pids=$2
	if [ ! -z "$pids" ]; then
	echo -n "Stopping $1 ... "
	fi
	for p in ${pids}; do
	if [ x$p != "x" ]; then
	kill -KILL $p
	echo "Killed existing process (pid: $p)"
	fi
	done
	}

	function revert-conf {
	set -e

	echo -n "ERROR occurred ... "
	local temp_zk="${ZK_CONF}.tmp"

	if [ -f "${temp_zk}" ]; then
	local zk_file=`basename ${ZK_CONF}`
	echo -n "reverting ${zk_file} ... "
	rm ${temp_zk}
	mv ${ZK_CONF_BACKUP} ${ZK_CONF}
	fi

	echo "EXIT"

	if [ ! -z "$1" ]; then
	echo $1
	fi

	set +e

	exit 1
	}

	function create-zk-conf {
	echo -n "Creating ${ZK_CONF} ... "

	# creation of zookeeper config

	local temp_zk="${ZK_CONF}.tmp"
	touch ${temp_zk}

	if [ -f ${ZK_CONF} ]; then
	mv ${ZK_CONF} ${ZK_CONF_BACKUP}
	local backup_file=`basename ${ZK_CONF_BACKUP}`
	echo -n "backup old file to ${backup_file} ... "
	fi

	local hosts=${ZK_HOSTS}
	if [ -z "${hosts}" ]; then
	# assume single-node mode
	hosts=${ONOS_HOST_NAME}
	fi

	hostarr=`echo ${hosts} \| tr "," " "`

	local i=1
	local myid=
	for host in ${hostarr}; do
	if [ ${host} = ${ONOS_HOST_NAME} ]; then
	myid=$i
	break
	fi
	i=`expr $i + 1`
	done

	if [ -z "${myid}" ]; then
	local filename=`basename ${ONOS_CONF}`
	revert-conf "[ERROR in ${filename}] zookeeper.hosts must have hostname \"${ONOS_HOST_NAME}\""
	fi

	# TODO: Remove sudo.
	# This is temporary code for the sake of compatibility with old code (which creates myid with root user).
	sudo mv ${ZK_MY_ID} ${ZK_MY_ID}.old
	echo ${myid} > ${ZK_MY_ID}

	echo -n "myid is assigned to ${myid} ... "

	while read line; do
	if [[ $line =~ ^__HOSTS__$ ]]; then
	i=1
	for host in ${hostarr}; do
	# TODO: ports might be configurable
	local hostline="server.${i}=${host}:2888:3888"
	echo $hostline >> "${temp_zk}"
	i=`expr $i + 1`
	done
	elif [[ $line =~ __DATADIR__ ]]; then
	echo $line \| sed -e "s\|__DATADIR__\|${ZK_LIB_DIR}\|" >> ${temp_zk}
	else
	echo $line >> ${temp_zk}
	fi
	done < ${ZK_CONF_TEMPLATE}
	mv ${temp_zk} ${ZK_CONF}

	echo "DONE"
	}

	function create-logback-conf {
	echo -n "Creating ${ONOS_LOGBACK} ... "

	# creation of logback config
	if [ -f $ONOS_LOGBACK ]; then
	local logback_file=`basename ${ONOS_LOGBACK}`
	mv ${ONOS_LOGBACK} ${ONOS_LOGBACK_BACKUP}
	local logback_back_file=`basename ${ONOS_LOGBACK_BACKUP}`
	echo -n "backup old file to ${logback_back_file} ... "
	fi
	sed -e "s\|__FILENAME__\|${ONOS_LOG}\|" ${ONOS_LOGBACK_TEMPLATE} > ${ONOS_LOGBACK}

	echo "DONE"
	}

	function create-conf {
	local key
	local filename

	trap revert-conf ERR

	if [ -f ${ZK_CONF} -a "$1" != "-f" ]; then
	# confirmation to overwrite existing config file
	echo -n "Overwriting ${ZK_CONF_FILE} [Y/n]? "
	while [ 1 ]; do
	read key
	if [ -z "${key}" -o "${key}" == "Y" ]; then
	create-zk-conf
	break
	elif [ "${key}" == "n" ]; then
	break
	fi
	echo "[Y/n]?"
	done
	else
	create-zk-conf
	fi

	if [ -f ${ONOS_LOGBACK} -a "$1" != "-f" ]; then
	filename=`basename ${ONOS_LOGBACK}`
	echo -n "Overwriting ${filename} [Y/n]? "
	while [ 1 ]; do
	read key
	if [ -z "${key}" -o "${key}" == "Y" ]; then
	create-logback-conf
	break
	elif [ "${key}" == "n" ]; then
	break
	fi
	echo "[Y/n]?"
	done
	else
	create-logback-conf
	fi

	trap - ERR
	}
	############################################


	###### Functions related to ZooKeeper ######
	function zk {
	case "$1" in
	start)
	start-zk
	;;
	stop)
	stop-zk
	;;
	stat*) # <- status
	status-zk
	;;
	re*) # <- restart
	stop-zk
	start-zk
	;;
	*)
	print_usage
	exit 1
	esac
	}

	function start-zk {
	echo -n "Starting Zookeeper ... "

	if [ -f "${ZK_CONF}" ]; then
	# Run Zookeeper with our configuration
	export ZOOCFG=${ZK_CONF_FILE}
	export ZOOCFGDIR=${ONOS_CONF_DIR}
	fi

	$ZK_DIR/bin/zkServer.sh start
	}

	function stop-zk {
	kill-processes "ZooKeeper" `jps -l \| grep org.apache.zookeeper.server \| awk '{print $1}'`
	}

	function status-zk {
	if [ -f ${ZK_CONF} ]; then
	export ZOOCFG=${ZK_CONF_FILE}
	export ZOOCFGDIR=${ONOS_CONF_DIR}
	fi

	$ZK_DIR/bin/zkServer.sh status
	}
	############################################


	####### Functions related to RAMCloud ######
	function start-backend {
	if [ "${ONOS_HOST_BACKEND}" = "ramcloud" ]; then
	if [ $1 == "coord" ]; then
	rc-coord startifdown
	elif [ $1 == "server" ]; then
	rc-server startifdown
	fi
	fi
	}

	function stop-backend {
	rcsn=`pgrep -f obj.${RAMCLOUD_BRANCH}/server \| wc -l`
	if [ $rcsn != 0 ]; then
	rc-server stop
	fi

	rccn=`pgrep -f obj.${RAMCLOUD_BRANCH}/coordinator \| wc -l`
	if [ $rccn != 0 ]; then
	rc-coord stop
	fi
	}

	function deldb {
	# TODO: implement
	return
	}


	### Functions related to RAMCloud coordinator
	function rc-coord-addr {
	local coordproto=${RC_COORD_PROTOCOL}
	local coordip=${RC_COORD_IP}
	local coordport=${RC_COORD_PORT}

	if [ -z "${coordproto}" ]; then
	coordproto='fast+udp'
	fi

	if [ -z "${coordip}" ]; then
	# assume single-node mode
	coordip=${ONOS_HOST_IP}
	fi

	if [ -z "${coordport}" ]; then
	# assume default port
	coordport=${RAMCLOUD_COORD_PORT}
	fi

	echo "${coordproto}:host=${coordip},port=${coordport}"
	}

	function rc-server-addr {
	local serverproto=${RC_SERVER_PROTOCOL}
	local serverip=${RC_SERVER_IP}
	local serverport=${RC_SERVER_PORT}

	if [ -z "${serverproto}" ]; then
	serverproto='fast+udp'
	fi

	# Normally this parameter should be null
	if [ -z "${serverip}" ]; then
	serverip=${ONOS_HOST_IP}
	fi

	if [ -z "${serverport}" ]; then
	# assume default port
	serverport=${RAMCLOUD_SERVER_PORT}
	fi

	echo "${serverproto}:host=${serverip},port=${serverport}"
	}

	function rc-coord {
	case "$1" in
	start)
	deldb
	stop-coord
	start-coord
	;;
	startifdown)
	local n=`pgrep -f obj.${RAMCLOUD_BRANCH}/coordinator \| wc -l`
	if [ $n == 0 ]; then
	start-coord
	else
	echo "$n instance of RAMCloud coordinator running"
	fi
	;;
	stop)
	stop-coord
	;;
	stat*) # <- status
	local n=`pgrep -f obj.${RAMCLOUD_BRANCH}/coordinator \| wc -l`
	echo "$n RAMCloud coordinator running"
	;;
	*)
	print_usage
	exit 1
	esac
	}

	function start-coord {
	if [ ! -d ${LOGDIR} ]; then
	mkdir -p ${LOGDIR}
	fi
	if [ -f $RAMCLOUD_COORD_LOG ]; then
	rotate-log $RAMCLOUD_COORD_LOG
	fi

	local coord_addr=`rc-coord-addr`

	# Run ramcloud
	echo -n "Starting RAMCloud coordinator ... "
	$RAMCLOUD_DIR/obj.${RAMCLOUD_BRANCH}/coordinator -L ${coord_addr} > $RAMCLOUD_COORD_LOG 2>&1 &
	echo "STARTED"
	}


	function stop-coord {
	kill-processes "RAMCloud coordinator" `pgrep -f obj.${RAMCLOUD_BRANCH}/coordinator`
	}

	### Functions related to RAMCloud server
	function rc-server {
	case "$1" in
	start)
	deldb
	stop-server
	start-server
	;;
	startifdown)
	local n=`pgrep -f obj.${RAMCLOUD_BRANCH}/server \| wc -l`
	if [ $n == 0 ]; then
	start-server
	else
	echo "$n instance of RAMCloud server running"
	fi
	;;
	stop)
	stop-server
	;;
	# deldb)
	# deldb
	# ;;
	stat*) # <- status
	n=`pgrep -f obj.${RAMCLOUD_BRANCH}/server \| wc -l`
	echo "$n RAMCloud server running"
	;;
	*)
	print_usage
	exit 1
	esac
	}

	function start-server {
	if [ ! -d ${LOGDIR} ]; then
	mkdir -p ${LOGDIR}
	fi
	if [ -f $RAMCLOUD_SERVER_LOG ]; then
	rotate-log $RAMCLOUD_SERVER_LOG
	fi

	local coord_addr=`rc-coord-addr`
	local server_addr=`rc-server-addr`

	# Run ramcloud
	echo -n "Starting RAMCloud server ... "
	${RAMCLOUD_DIR}/obj.${RAMCLOUD_BRANCH}/server -M -L ${server_addr} -C ${coord_addr} --masterServiceThreads 1 --logCleanerThreads 1 --detectFailures 0 > $RAMCLOUD_SERVER_LOG 2>&1 &
	echo "STARTED"
	}

	function stop-server {
	kill-processes "RAMCloud server" `pgrep -f obj.${RAMCLOUD_BRANCH}/server`
	}
	############################################


	## Functions related to ONOS core process ##
	function onos {
	CPFILE=${ONOS_HOME}/.javacp.${ONOS_HOST_NAME}
	if [ ! -f ${CPFILE} ]; then
	echo "ONOS core needs to be built"
	${MVN} -f ${ONOS_HOME}/pom.xml compile
	fi
	JAVA_CP=`cat ${CPFILE}`
	JAVA_CP="${JAVA_CP}:${ONOS_HOME}/target/classes"

	case "$1" in
	start)
	stop-onos
	start-onos
	;;
	startnokill)
	start-onos
	;;
	startifdown)
	n=`jps -l \| grep "${MAIN_CLASS}" \| wc -l`
	if [ $n == 0 ]; then
	start-onos
	else
	echo "$n instance of onos running"
	fi
	;;
	stop)
	stop-onos
	;;
	stat*) # <- status
	n=`jps -l \| grep "${MAIN_CLASS}" \| wc -l`
	echo "$n instance of onos running"
	;;
	*)
	print_usage
	exit 1
	esac
	}

	function start-onos {
	if [ ! -d ${LOGDIR} ]; then
	mkdir -p ${LOGDIR}
	fi
	# Backup log files
	for log in ${LOGS}; do
	if [ -f ${log} ]; then
	rotate-log ${log}
	fi
	done

	if [ ! -f ${ONOS_LOGBACK} ]; then
	echo "[WARNING] ${ONOS_LOGBACK} not found."
	echo " Run \"\$ $0 setup\" to create."
	exit 1
	fi

	JVM_OPTS="${JVM_OPTS} -Dnet.onrc.onos.datastore.backend=${ONOS_HOST_BACKEND}"

	# Run ONOS

	echo -n "Starting ONOS controller ..."
	java ${JVM_OPTS} -Dlogback.configurationFile=${ONOS_LOGBACK} -cp ${JAVA_CP} ${MAIN_CLASS} -cf ${ONOS_PROPS} > ${LOGDIR}/${LOGBASE}.stdout 2>${LOGDIR}/${LOGBASE}.stderr &

	# We need to wait a bit to find out whether starting the ONOS process succeeded
	sleep 1

	n=`jps -l \|grep "${MAIN_CLASS}" \| wc -l`
	if [ $n -ge 1 ]; then
	echo " STARTED"
	else
	echo " FAILED"
	fi

	# echo "java ${JVM_OPTS} -Dlogback.configurationFile=${ONOS_LOGBACK} -jar ${ONOS_JAR} -cf ./onos.properties > /dev/null 2>&1 &"
	# sudo -b /usr/sbin/tcpdump -n -i eth0 -s0 -w ${PCAP_LOG} 'tcp port 6633' > /dev/null 2>&1
	}

	function stop-onos {
	kill-processes "ONOS controller" `jps -l \| grep ${MAIN_CLASS} \| awk '{print $1}'`
	# kill-processes "tcpdump" `ps -edalf \|grep tcpdump \|grep ${PCAP_LOG} \| awk '{print $4}'`
	}
	############################################


	################## Main ####################
	case "$1" in
	setup)
	create-conf $2
	;;
	start)
	mode_parameter=${ONOS_HOST_ROLE}
	if [ ! -z "$2" ]; then
	mode_parameter=$2
	fi

	case "${mode_parameter}" in
	single-node)
	zk start
	start-backend coord
	start-backend server
	onos startifdown
	;;
	coord-node)
	zk start
	start-backend coord
	onos startifdown
	;;
	server-node)
	zk start
	start-backend server
	onos startifdown
	;;
	coord-and-server-node)
	zk start
	start-backend coord
	start-backend server
	onos startifdown
	;;
	*)
	print_usage
	;;
	esac
	echo
	;;
	stop)
	on=`jps -l \| grep "${MAIN_CLASS}" \| wc -l`
	if [ $on != 0 ]; then
	onos stop
	fi

	stop-backend

	zkn=`jps -l \| grep org.apache.zookeeper.server \| wc -l`
	if [ $zkn != 0 ]; then
	zk stop
	fi
	echo
	;;
	restart)
	on=`jps -l \| grep "${MAIN_CLASS}" \| wc -l`
	if [ $on != 0 ]; then
	onos stop
	fi

	rcsn=`pgrep -f obj.${RAMCLOUD_BRANCH}/server \| wc -l`
	if [ $rcsn != 0 ]; then
	rc-server stop
	fi

	rccn=`pgrep -f obj.${RAMCLOUD_BRANCH}/coordinator \| wc -l`
	if [ $rccn != 0 ]; then
	rc-coord stop
	fi

	zkn=`jps -l \| grep org.apache.zookeeper.server \| wc -l`
	if [ $zkn != 0 ]; then
	zk restart
	fi

	if [ $rccn != 0 ]; then
	rc-coord startifdown
	fi

	if [ $rcsn != 0 ]; then
	rc-server startifdown
	fi

	if [ $on != 0 ]; then
	onos startifdown
	fi
	echo
	;;
	stat*) # <- status
	echo '[ZooKeeper]'
	zk status
	echo
	echo '[RAMCloud coordinator]'
	rc-coord status
	echo
	echo '[RAMCloud server]'
	rc-server status
	echo
	echo '[ONOS core]'
	onos status
	echo
	;;
	zk)
	zk $2
	;;
	rc-c*) # <- rc-coordinator
	rc-coord $2
	;;
	rc-s*) # <- rc-server
	rc-server $2
	;;
	core)
	onos $2
	;;
	*)
	print_usage
	exit 1
	esac