mysql进程监控

1、vi /root/sh/mysql_status.sh创建文件，脚本粘贴进去（脚本见后面）（如果是windows编辑上传的，可能存在编码问题）

2、设置执行权限

chmod -R 777 /root/sh

chown -R user:user /root/sh

3、crontab -e添加到定时，1分钟执行一次

*/1 * * * * root /bin/sh /root/sh/mysql_status.sh

脚本如下：

#!/bin/bash

#/usr/bin/nmap localhost | grep 3306

#lsof -i:3306

MYSQLPORT=`netstat -na|grep "LISTEN"|grep "3306"|awk -F[:" "]+ '{print $4}'`

function checkMysqlStatus(){

/usr/bin/mysql -uroot -p111111 --connect_timeout=5 -e "show databases;" &>/dev/null 2>&1

if [ $? -ne 0 ]

then

restartMysqlService

if [ "$MYSQLPORT" == "3306" ];then

echo "mysql restart successful......"

else

echo "mysql restart failure......"

echo "Server: $MYSQLIP mysql is down, please try to restart mysql by manual!" > /var/log/mysqlerr

#mail -s "WARN! server: $MYSQLIP  mysql is down" [email protected] < /var/log/mysqlerr

fi

else

echo "mysql is running..."

fi

}

function restartMysqlService(){

echo "try to restart the mysql service......"

/bin/ps aux |grep mysql |grep -v grep | awk '{print $2}' | xargs kill -9

#service mysql start

systemctl restart mysqld

}

if [ "$MYSQLPORT" == "3306" ]

then

checkMysqlStatus

else

restartMysqlService

fi

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