Check Mysql Master-Slave Replication Script.

This is Mysql Master-Slave Replication Script which is checking position of log. you can set as cron and run.

vi /usr/bin/scriptname

#! /bin/bash
#
# Will Run on LOCAL LAN ON EC2 CLUSTER

SLAVE_HOST=1.2.2.1
SLAVE_PASS=passwd
SLAVE_USER=root

MASTER_PASS=passwd
MASTER_USER=root
MASTER_HOST=1.2.4.2

master_pos=`/usr/local/mysql/bin/mysql -u$SLAVE_USER -p$SLAVE_PASS -h$SLAVE_HOST -e 'show slave status \G;' |grep -r 'Read_Master_Log_Pos' |awk '{ printf " %s ", $2 }' |xargs`


slave_pos=`/usr/local/mysql/bin/mysql -u$MASTER_USER -p$MASTER_PASS -h$MASTER_HOST -e 'show master status;' | grep mysql-bin |awk '{ printf " %s ", $2 }' |xargs`

echo $master_pos
echo $slave_pos

expr $master_pos - $slave_pos

echo $master_pos
echo $slave_pos