求助！supervisord 报错 FATAL Exited too quickly (process log may have details)

环境：centos 6.4
监控进程：
[program:httpd]
command=/usr/sbin/httpd
numprocs=1
autostart=true
autorestart=true
startretries=10
stopsignal=KILL
stopwaitsecs=10
redirect_stderr=true
stdout_logfile=/home/http.log

启动脚本：
#! /bin/sh

PATH=/sbin:/bin:/usr/sbin:/usr/bin

PROGNAME=supervisord

DAEMON=/usr/bin/$PROGNAME

CONFIG=/etc/$PROGNAME.conf

PIDFILE=/tmp/$PROGNAME.pid

DESC="supervisord daemon"

SCRIPTNAME=/etc/init.d/$PROGNAME

# chkconfig: 2345 08 92
#
# description: Automates a packet filtering firewall withip
#
# Gracefully exit if the package has been removed.

test -x $DAEMON || exit 0



start()

{

echo -n "Starting $DESC: $PROGNAME"

$DAEMON -c $CONFIG

echo "..."

}

stop()

{

echo -n "Stopping $DESC: $PROGNAME"

supervisor_pid=$(cat $PIDFILE)

kill -15 $supervisor_pid

echo "..."

}

case "$1" in

start)

start

;;

stop)

stop

;;

restart)

stop

start

;;

*)

echo "Usage: $SCRIPTNAME {start|stop|restart}" >&2

exit 1

;;

esac

exit 0


求大神告知错误在哪？