Mysql主从状态监控脚本

Posted 2020-09-17

目标：对mysql从库进行状态监控，如果从库复制异常就告警

思路：

1、首先查找Mysql从库的4个参数值(show slave status根据这个命令)；分别是从库的IO线程、SQL线程、复制延迟时间(这个在以下脚本没用到，可以再写个脚本对其延迟进行告警)、错误码

2、函数Mysql_status判断，对IO线程、SQL线程、错误码三者逻辑与判断

3、如果为假则执行函数Mysql_Errno

4、对于mysql错误码为1158 1159 1008 1007 1062 我们可以进行停止slave，跳过当前复制条数，进行下一条复制

[[email protected] script]# cat mysql_check.sh 

#!/bin/bash

#

#2017.5.8

#mysql状态监测告警

. /etc/init.d/functions

Mysql_IO_cmd=`mysql -h 10.222.1.5 -uroot -p123456  -e ‘show slave status\G‘|grep Slave_IO_Running |awk ‘{print $NF}‘`

Mysql_SQL_cmd=`mysql -h 10.222.1.5 -uroot -p123456  -e ‘show slave status\G‘|grep Slave_SQL_Running |awk ‘{print $NF}‘`

Mysql_Be_cmd=`mysql -h 10.222.1.5 -uroot -p123456  -e ‘show slave status\G‘|grep Seconds_Behind_Master |awk ‘{print $NF}‘`

Mysql_Errno_cmd=`mysql -h 10.222.1.5 -uroot -p123456  -e ‘show slave status\G‘|grep Last_SQL_Errno |awk ‘{print $NF}‘`

ErrorNo=(1158 1159 1008 1007 1062)

##判断mysql复制的错误码

Mysql_Errno() {

for sum in $ErrorNo

  do

if [ "$Mysql_Errno_cmd" == "$sum" ];then

echo "$(date +%F_%R)错误状态码:$Mysql_Errno_cmd" >> /tmp/mysql_error.log

mysql -h 10.222.1.5 -uroot -p123456  -e ‘stop slave;set global sql_slave_skip_counter=1;start slave;‘

echo `sort -r /tmp/mysql_error.log` |mail -s "MySQL Slave is error" [email protected]

  else

echo "$(date +%F_%R)错误状态码:$Mysql_Errno_cmd" >> /tmp/mysql_error.log

#echo `sort -r /tmp/mysql_error.log` |mail -s "MySQL Slave is error" [email protected]

uniq  /tmp/mysql_error.log |mail -s "MySQL Slave is error" [email protected]

fi

  done

}

##监测mysql状态函数

Mysql_status() {

if [ "$Mysql_IO_cmd" == "Yes" -a "$Mysql_SQL_cmd" == "Yes" -a "$Mysql_Errno_cmd" == "0" ];then

echo 

action "mysql status" /bin/true

  else

echo

action "mysql status" /bin/false

Mysql_Errno

fi 

}

Mysql_status

本文出自 “常想一二” 博客，请务必保留此出处http://250919938.blog.51cto.com/962010/1923784