mysql在线温备、主从搭建及slave状态监控脚本

 Wper主从搭建

主服务器 192.168.192.91

从服务器192.168.192.54

master:

 

my.cnf中添加

server-id=1

log-bin=mysql-bin

重启服务

 

加锁并备份数据：

 

mysql>flush tables with read lock
mysql> show master status;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 |   482745 |              |                  |
+------------------+----------+--------------+------------------+  
     
     #mysqldump --databases bbs_weand_com > /root/bbs_weand_com.sql //这条命令需要另开一个终端执行  
     mysql>unlock tables;  
     #scp /root/bbs_weand_com.sql 192.168.192.54:/disk2
#mysqldump --databases bbs_weand_com > /root/bbs_weand_com.sql //这条命令需要另开一个终端执行
mysql>unlock tables;
#scp /root/bbs_weand_com.sql 192.168.192.54:/disk2

1 row in set (0.00 sec)

 

 

授权：

mysql>grant replication client,replication slave on *.* to backup@'192.168.192.%' identifided by 'XXXX';
mysql>flush privileges;
mysql>show grants for backup@'192.168.192.%';

     

 

slave：

配置文件添加

[mysqld7]
socket = /disk2/mysql5.0/data/mysql7_wper/mysql.sock
port = 3307
pid-file = /disk2/mysql5.0/data/mysql7_wper/mysql.pid
datadir = /disk2/mysql5.0/data/mysql7_wper/
user = mysql
server-id = 30
log-bin = mysql-bin
expire_logs_days = 7
master-host=192.168.192.91
master-port=3306
master-user=backup
master-password=weiphone
replicate_do_db=bbs_weand_com

 

开启服务

 

#mysql -uroot -h127.0.0.1 -P3307 </disk2/bbs_weand_com.sql
#mysql -uroot -h127.0.0.1 -P3307
mysql>stop slave;
mysql> CHANGE MASTER TO MASTER_HOST='192.168.192.91',MASTER_USER='backup',MASTER_PASSWORD='XXXX',MASTER_LOG_FILE='mysql-bin.000001',MASTER_LOG_POS=482745;
mysql>start slave;

 

依据脚本格式为monitor授权：

 

mysql> GRANT SUPER, REPLICATION SLAVE ON *.* TO 'monitor'@'192.168.192.%' IDENTIFIED BY PASSWORD '*330BC159EEB68E28E5BB0EACD81C6735A8677136';

为mysql用户授权关机：

 

mysql> grant shutdown on *.* to mysql@localhost identified by 'BBBBXXX';
mysql>flush privileges;

 

 

添加监控脚本内容如下：

 

<?php
#include('db_config.php');
$_CONFIG = array(
       ('mysql_host_w'=>'192.168.192.54:3307','mysql_user_w'=>'monitor','mysql_pwd_w'=>'AAAXXX'),
);

foreach($_CONFIG as $k => $v){
        $err_no = 1;
        $conn = mysql_connect($v['mysql_host_w'],$v['mysql_user_w'],$v['mysql_pwd_w']);
        $result = mysql_query("show slave status") or print_r(mysql_error());
        $row = mysql_fetch_array($result);
        mysql_close($conn);
        //print_r($row);
        switch ($row['Slave_SQL_Running']){
                case 'Yes' :
                        $err_no2 = 0; break;
                case 'No' :
                        $err_no2 = 1; break;
                default :
                        $err_no2 = 2; break;
        }

        switch ($row['Slave_IO_Running']){
                case 'Yes' :
                        $err_no = 0; break;
                case 'No' :
                        $err_no = 3; break;
                default :
                        $err_no = 4; break;
        }
        //$err_no |= $row['Slave_SQL_Running'] =='Yes'?0:1;
        //$err_no |= $row['Slave_IO_Running'] == 'Yes'?0:2;
        //$row['c'] = ($row['Slave_SQL_Running'] =='Yes' && $row['Slave_IO_Running'] == 'Yes')?1:0;
        //echo 'TIME=' .date('Y-m-d H:i:s') .'NUM=' .$err_no;
        if($err_no == 0 & $err_no2 == 0 )
        echo '0|mysql slave successful   '.$v['mysql_host_w']."<br>
";
        elseif($err_no == 1 | $err_no2 == 1)
        echo '1|mysql slave fail error_no:'.$err_no.','.$v['mysql_host_w']." | Slave_SQL_Running:".$row['Slave_SQL_Running']."<br>
";
        elseif($err_no == 3 | $err_no2 ==3 )
        echo '3|mysql slave fail error_no:'.$err_no.','.$v['mysql_host_w']." | Slave_IO_Running:".$row['Slave_IO_Running']."<br>
";
        else
        echo '4|mysql slave error_no:'.$err_no.','.$v['mysql_host_w']." | Slave_SQL_Running:".$row['Slave_SQL_Running']."<br>
";
}