#!/bin/bash
# Linux Standard Base comments
### BEGIN INIT INFO
# Provides:          ndb_mgmd
# Required-Start:    $local_fs $network $syslog $remote_fs
# Required-Stop:     $local_fs $network $syslog $remote_fs
# Should-Start:
# Should-Stop:
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: mysql cluster manager
# Description:       mysql cluster manager
### END INIT INFO

ndb_mgmd=/usr/local/mysql/bin/ndb_mgmd
config_file=/var/lib/mysql-cluster/config.ini
config_dir=/var/lib/mysql-cluster

if ! test -x $ndb_mgmd; then
	echo "Can't execute $ndb_mgmd"	
	exit;
fi

start_ndb_mgmd(){
	number_of_ndb_mgmd_pids=`ps aux|grep -iv "grep"|grep -i "$ndb_mgmd"|wc -l`
	if [ $number_of_ndb_mgmd_pids -eq 0 ]; then
		$ndb_mgmd -f $config_file --config-dir=$config_dir
		echo "ndb_mgmd started."
	else
		echo "ndb_mgmd is already running."
	fi
}

stop_ndb_mgmd(){
	number_of_ndb_mgmd_pids=`ps aux|grep -iv "grep"|grep -i "$ndb_mgmd"|wc -l`
        if [ $number_of_ndb_mgmd_pids -ne 0 ]; then
		ndb_mgmd_pids=`pgrep ndb_mgmd`
        	for ndb_mgmd_pid in $(echo $ndb_mgmd_pids); do
                	kill $ndb_mgmd_pid 2> /dev/null
        	done

		number_of_ndb_mgmd_pids=`ps aux|grep -iv "grep"|grep -i "$ndb_mgmd"|wc -l`

        	if [ $number_of_ndb_mgmd_pids -eq 0 ]; then
                	echo "ndb_mgmd stopped."
        	else
                	echo "Could not stop ndb_mgmd."
        	fi
	else
		echo "ndb_mgmd is not running."
	fi
}


case "$1" in
    'start' )
        start_ndb_mgmd
        ;;
    'stop' )
	stop_ndb_mgmd
        ;;
    'restart' )
        stop_ndb_mgmd
	start_ndb_mgmd
        ;;
    *)
        echo "Usage: $0 {start|stop|restart}" >&2
        ;;
esac