[root@oldboy scripts]# cat check_db01.sh
#!/bin/sh
#created by oldboy
#mail:oldboy521@gmail.com
PortNum=`netstat -lnt|grep 3306|wc -l`
if [ $PortNum -eq 1 ]
then
 echo "mysqld is running."
else
 echo "mysqld is stoped."
fi

[root@oldboy scripts]# cat check_db01_1.sh
#!/bin/sh
#created by oldboy
#mail:oldboy521@gmail.com
 
PortNum=`netstat -lnt|grep 3306|wc -l`
#PortNum=`nmap 10.0.0.189 -p 3306|grep open|wc -l`
[ $PortNum -eq 1 ] && echo "mysqld is running."||echo "mysqld is stoped."

[root@oldboy scripts]# cat check_db01_2.sh
#!/bin/sh
#created by oldboy
#mail:oldboy521@gmail.com
#load functions
[ -f /etc/init.d/functions ] && . /etc/init.d/functions
PortNum=`netstat -lnt|grep 3306|wc -l`
if [ $PortNum -eq 1 ]
then
 action "mysqld is running." /bin/true
else
 action "mysqld is stoped." /bin/false
fi

[root@oldboy scripts]# cat check_db02.sh
#!/bin/sh
#created by oldboy
#mail:oldboy521@gmail.com
 
PortNum=`netstat -lnt|grep 3306|wc -l`
ProcessNum=`ps -ef|grep mysql|grep -v grep| wc -l`
#echo $PortNum $ProcessNum
#exit 1
 
if [ $PortNum -eq 1 -a $ProcessNum -eq 2 ]
then
 echo "mysqld is running."
else
 echo "mysqld is stoped."
fi

[root@oldboy scripts]# cat check_db03.sh
#!/bin/sh
#created by oldboy
#mail:oldboy521@gmail.com
PortNum=`nmap 10.0.0.189 -p 80|grep open|wc -l`
if [ $PortNum -eq 1 ]
then
 echo "mysqld is running."
else
 echo "mysqld is stoped."
fi

[root@oldboy scripts]# cat check_db04.sh
#!/bin/sh
#created by oldboy
#mail:oldboy521@gmail.com
 
mysql -S /data/3306/mysql.sock -e "select version();" >/dev/null 2>&1
if [ $"mysqld is running."
else
 echo "mysqld is stoped."
fi

<"mysql successful by oldboy !";
  }else{
   echo mysql_error();
  }
?>

#!/bin/bash 
#created by oldboy QQ 49000448 
#date:20100918 
MYUSER=root 
MYPASS="oldboy" 
MYSOCK=/data/3306/mysql.sock 
MySQL_STARTUP="/data/3306/mysql" 
LOG_PATH=/tmp 
LOG_FILE=${LOG_PATH}/mysqllogs_`date +%F`.log 
MYSQL_PATH=/usr/local/mysql/bin 
MYSQL_CMD="$MYSQL_PATH/mysql -u$MYUSER -p$MYPASS -S $MYSOCK" 
#→全变量定义方式，显得更专业。 
$MYSQL_CMD -e "select version();" >/dev/null 2>&1 
if [ $"MySQL is running! " 
exit 0 
else 
$MySQL_STARTUP start >$LOG_FILE#→日志也是变量。 
sleep 5; 
$MYSQL_CMD -e "select version();" >/dev/null 2>&1 
if [ $"select version();" >/dev/null 2>&1 && Status="restarted" || Status="unknown"#→这个逻辑更准确。 
echo "MySQL status is $Status" $LOG_FILE 
mail -s "MySQL status is $Status" 31333741@qq.com < $LOG_FILE 
#→把上面的Status作为结果标题传给邮件，当然你可以做短信，语音通话报警。 
fi 
exit