mysql服务启动失败

#!/bin/bash
. /etc/rc.d/init.d/functions
MPORT=`netstat -atnlp | grep 3306| wc -l`
MPROC=`ps ax | grep mysqld | grep -v mysqld | wc -l`
MSOCK=/var/lib/mysqld/mysql.sock
MPROG=mysqld

if [ $MPORT -ne 0 -a -S	$MSOCK ];then
	action "mysql db is running" /bin/true
else
	/etc/init.d/mysqld start &> /dev/null
	if [ $MPORT -ne 0 -a -S $MSOCK ];then
	rm -fr $MSOCK
	while true
	do
	killall $MPROG  &> /dev/null
	[ $? -ne 0 ] && break
	sleep 1
	done
	/etc/init.d/mysqld start &> /dev null && MSTAT="success" || MSTAT="failure"
	date >> /tmp/mysqllog
	echo "mysql db is $MSTAT" >> /tmp/mysqllog
	mail -s "mysql db is $MSTAT" root < /tmp/mysqllog
	fi
fi