自动监控从MySQL同步的脚本

脚本设计思路：

1、此脚本应该能适应各种各样不同的内外网环境，即IP不同的环境；

2、让脚本也顺便监控下MySQL是否正常运行；

3、Slave机器的IO和SQL状态都必须为YES，缺一不可，这里用到了多重条件判断-a。

脚本内容：

#!/bin/bash
#check MySQL_Slave Status
#crontab time 00:10
MYSQLPORT=`netstat -na|grep "LISTEN"|grep "3306"|awk -F[:" "]+ '{print $5}'`
MYSQLIP=`ifconfig eth0|grep "inet addr" | awk -F[:" "]+ '{print $4}'`
STATUS=$(/usr/local/mysql/bin/mysql -u zhaoyuefei -pzhaoyuefei1*0*1 -S /tmp/mysql.sock -e "show slave status\G" | grep -i "running")
IO_env=`echo $STATUS | grep IO | awk  ' {print $2}'`
SQL_env=`echo $STATUS | grep SQL | awk  '{print $2}'`

if [ "$MYSQLPORT" == "3306" ]
then
  echo "mysql is running"
else
  /bin/mail -s "warn!server: $MYSQLIP mysql is down" [e-mail]
fi

if [ "$IO_env" = "Yes" -a "$SQL_env" = "Yes" ]
then
  echo "Slave is running!"
else
  echo "#######  $date  #########" >> /tmp/check_mysql_slave.log
  echo "Slave is not running!" >> /tmp/check_mysql_slave.log
  echo "Slave is not running!"
  #mail -s "warn! $MySQLIP_replicate_error" [e-mail] << /tmp/check_mysql_slave.log
  echo "`cat /tmp/check_mysql_slave.log`" |mail -s "Warning...slave is not running!!" [e-mail]
fi


使用方式：

用crontab设置定期运行，建议每十分钟运行一次
*/10 * * * * /root/mysql-slave-status.sh


记得在每台MySQL从机上分配一个yuhongchun的用户，权限大些也没关系，只限定在本地运行，如下所示：

grant all privileges on *.* to "zhaoyuefei"@"127.0.0.1" identified by "zhaoyuefei1*0*1";
grant all privileges on *.* to "zhaoyuefei"@"localhost" identified by "zhaoyuefei1*0*1";