mysql主从监控

	要求：检测myslq从库状态，跳过固定的错误号，每隔30秒检测一次，如果符合条件自动跳过或者是重启从库
	1）取出mysql从库的关键字
	[root@localhost scripts]# mysql -u root -p123qq.com3307 -S /data/3307/mysql.sock -e "show slave status\G"|grep -E "Running|Seconds_Behind_Master|Last_SQL_Errno"|awk '{print $NF}'
	Yes
	Yes
	0
	0
	2）把错误号定义在数组里面
	3）while ture
	根据思路调试出如下脚本。。。。。
	[root@localhost scripts]# cat check_mysql_slave.sh 
	#/bin/bash
	#Date:     2015-12-14 22:37
	#Author:   create by  李兴利
	#Mail:     [e-mail]
	#Function: This scripts  function is check mysql slave is ok
	#Version:  1.1
	qq="[e-mail]"
	cmd="mysql -u root -p123qq.com3307 -S /data/3307/mysql.sock -e"
	ip=`ifconfig eth2|sed -n 's#^.*ddr:\(.*\) Bc.*$#\1#gp'`
	skip=`$cmd "stop slave;set global sql_slave_skip_counter=1;start slave;"`
	error_numb=(1158 1159 1008 1007 1062)
	while true
	do
	status=(`$cmd "show slave status\G"|grep -E "Running|Seconds_Behind_Master|Last_SQL_Errno"|awk '{print $NF}'`)

	   if [ "${status[0]}"  == "Yes" -a "${status[1]}" == "Yes" -a "${status[2]}" == "0" ]
	       then
	           echo  "mysql slave is ok"
	       else
	           for ((n=0;n<${#error_numb[*]};n++))
	           do
	              if [ "${status[3]}" == "${error_numb[n]}" ];then
	              ${skip}
	              else
	               $cmd "stop slave;start slave;"
	              fi
	           done
	           echo  "mysql salve is not ok"
	           echo "${ip} mysql is not ok"|mail -s "mysql slave error at `date +%F%T`" $qq
	   fi
	sleep 3
	done
	[root@localhost scripts]# 
	测试结果如下
	[root@localhost scripts]# sh check_mysql_slave.sh 
	mysql salve is not ok
	mysql slave is ok
	mysql slave is ok
	mysql slave is ok
	mysql slave is ok
	mysql slave is ok
	mysql slave is ok
	mysql slave is ok
	mysql slave is ok
	mysql slave is ok
	mysql slave is ok

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