三个监控小脚本

1. 监控mysql主从，结合计划任务发邮件告警。

   #!/bin/bash
   # check mysql slave status

   mysql_path=/wqdata/mysql/bin/mysql
   user="root"
   password="[email protected]"
   [email protected]
   date=`(date +%y-%m-%d--%H:%M:%S)`
   ip=$(/sbin/ifconfig | grep "inet addr" | grep -v "127.0.0.1" | awk ‘{print $2;}‘ | awk -F‘:‘ ‘{print $2;}‘ | head -1)
   Slave_IO_Running=$($mysql_path -u$user -p$password -e ‘show slave status\G‘ | grep "Slave_IO_Running" | awk ‘{print $2}‘)
   Slave_SQL_Running=$($mysql_path -u$user -p$password -e ‘show slave status\G‘ | grep "Slave_SQL_Running" | awk ‘{print $2}‘)
   if [ "$Slave_IO_Running" = "Yes" -a "$Slave_SQL_Running" = "Yes" ]
   then
     echo "Slave is running!"
   else
     echo "#######  $date  #########">> /wqdata/check_mysql_slave.log
     echo "Slave is not running!" >> /wqdata/check_mysql_slave.log
   echo "{$ip}_replicate_error" |mail -s "warning:---83slave fail" [email protected]
   fi

2. 监控sersync是否运行，否则重启

   #!/bin/sh

   sersync="/usr/local/sersync/sersync2"

   confxml="/usr/local/sersync/confxml.xml"

   status=$(ps aux |grep ‘sersync2‘|grep -v ‘grep‘|wc -l)

   if [ $status -eq 0 ];

   then

   $sersync -d -r -o $confxml &

   else

   exit 0;

   fi

3. 定时备份mysqsl

   #!/bin/bash
   #此脚本用来进行数据库的全备份，结合计划任务完成

   #注意：下面的变量值可能要修改，仔细确认下
   mysqluser=root
   rsyncuser=rsync_backup
   rsync_hostip=‘233‘
   ip=‘223‘               #本机ip
   mysqlpassword=t3011
   mysqlsocket=‘/tmp/mysql.sock‘
   mysql_defaults_file=‘/wqdata/mysql/my.cnf‘

   backuptodir=‘/wqdata/mofidbbak/‘    #备份到目录
   binlogdir=‘/wqdata/mydata/data‘     #二进制日志目录
   binlogname=‘mysql-bin.0*‘       #二进制日志文件名
   rsyncmodule=mofidbbak            #rsync的模块

   if [ ! -d $backuptodir ];then
       mkdir -p $backuptodir
   fi

   #进行全备份
   innobackupex --user=$mysqluser --password=$mysqlpassword --socket=$mysqlsocket --defaults-file=$mysql_defaults_file $backuptodir 2> /dev/null || exit 1

   #删除一天前的全备份文件，即保留两个备份文件
   find $backuptodir  -type f -mtime +1 -exec rm -f {} \;

   #删除一天前的二进制日志文件,即保留两天的二进制日志文件
   cd $binlogdir
   onedayago_binlog=`find . -type f -mtime +1 -name "$binlogname" | sort | tail -n1 | awk -F‘/‘ ‘{print $2}‘`
   mysql -u $mysqluser -p$mysqlpassword -e "PURGE MASTER LOGS TO ‘$onedayago_binlog‘" 2> /dev/null

   #找出最后一个全备份文件，进行压缩
   cd $backuptodir
   lastfull_backup=`ls -l | grep ‘^d‘ | awk ‘{print $9}‘ | sort | tail -n1`
   tar -zcf mysql_full_${ip}_${lastfull_backup}.tar.gz ${lastfull_backup}

   #将压缩文件rsync同步到备份机
   rsync -az --password-file=/etc/rsync.password  ${backuptodir}mysql_full_${ip}_${lastfull_backup}.tar.gz [email protected]${rsync_hostip}::$rsyncmodule || exit 1

   #删除压缩文件
   rm -f ${backuptodir}mysql_full_${ip}_${lastfull_backup}.tar.gz

4.第三方发邮件软件

yum -y install mailx

vim /etc/mail.rc

set [email protected] smtp=smtp.139.com

set [email protected] smtp-auth-password=we

set smtp-auth=login

echo "zabbix test mail" |mail -s "标题zabbix" [email protected]

[[email protected] iosupload]# crontab -l
*/1 * * * * /etc/init.d/iptables start
*/5 * * * * root /wqdata/84jiaoben/check_sersync.sh > /dev/null 2>&1
* 1 * * * /wqdata/84jiaoben/mysqlfullbak.sh