修复Mysql主从不同步shell

使用第三方工具
MySQL Enterprise Monitor，MySQL企业版监控工具。
MONyog – MySQL Monior and Advisor，MONyog大家都不陌生，windows下比较好用的MySQLGUI提供者，也有相关MySQL监控工具。

脚本监控
#!/bin/bash

### VARIABLES ###
SERVER=`hostname`
SECONDS_BEHIND_MASTER=`/usr/bin/mysql -e "SHOW SLAVE STATUS\G"| grep "Seconds_Behind_Master" | awk -F": " {' print $2 '}`
SENTFILE_BROKEN=/tmp/mysql_slaverep_broken.sent
SENTFILE_BEHIND=/tmp/mysql_slaverep_behind.sent

### CHECK FOR REPLICATION BREAK ###
if [ "$SECONDS_BEHIND_MASTER" == "NULL" ]; then
# Slave replication is broken

if [ ! -f $SENTFILE_BROKEN ]; then
# This has not been reported before
echo "Slave replication broken on $SERVER"
touch $SENTFILE_BROKEN
fi
else
# Slave replication is not broken

if [ -f $SENTFILE_BROKEN ]; then
# It was broken before which was reported. Clear that state
echo "Slave replication has been restored on $SERVER"
rm $SENTFILE_BROKEN
fi

### CHECK FOR REPLICATION DELAY ###
if [ "$SECONDS_BEHIND_MASTER" -gt "60" ]; then
# Slave replication is delayed

if [ ! -f $SENTFILE_BEHIND ]; then
# This has not been reported before
echo "Slave replication is $SECONDS_BEHIND_MASTER seconds behind master on $SERVER"
touch $SENTFILE_BEHIND
fi
else
# Slave replication is not delayed

if [ -f $SENTFILE_BEHIND ]; then
# It was delayed before which was reported. Clear that state
echo "Slave replication delay has been recovered and is now $SECONDS_BEHIND_MASTER seconds behind master on $SERVER"
rm $SENTFILE_BEHIND
fi
fi

fi