• MySQL建立双向主备复制server配置方法


    1、环境描写叙述

      serverA(主) 192.85.1.175

      serverB(从) 192.85.1.176

      Mysql版本号:5.1.61

           系统版本号:System OS:ubuntu 10.10 X86

    (系统安装及数据环境搭建,省略)

    2. 创建同步用户:

    在服务B命令行运行 :

          grant replication slave on *.* to 'replication'@'%' identified by 'mysqlsync';  
          flush privileges;  
          grant FILE,SELECT, replication slave on *.* to 'replication'@'192.85.1.175' identified by 'mysqlsync';  
          flush privileges;  

    在serverA命令行运行:

          grant replication slave on *.* to 'replication'@'%' identified by 'mysqlsync';  
          flush privileges;  
          grant FILE,SELECT, replication slave on *.* to 'replication'@'192.85.1.176' identified by 'mysqlsync';  
          flush privileges;  
    在A与Bserver上检查主备复制账号是否正常:

    (1)分别在A与Bserver上的MYSQL命令行运行 “  show grants for 'replication'@'%';”

    假设输出结果类似于例如以下,表示正常,其它均为异常

    mysql> show grants for 'replication'@'%';
    +--------------------------------------------------------------------------------------------------------------------------------------+
    | Grants for replication@%                                                                                                             |
    +--------------------------------------------------------------------------------------------------------------------------------------+
    | GRANT SELECT, FILE, REPLICATION SLAVE ON *.* TO 'replication'@'%' IDENTIFIED BY PASSWORD '*47E2485DF0DBED84B9BD90AF25F48A36E7EAD57E' |
    +--------------------------------------------------------------------------------------------------------------------------------------+
    1 row in set (0.00 sec)

    (2)使用主备复制账号在Aserver远程登录B ,在Bserver远程登录A ,測试 ,假设能够正常登录说明,账号正常,能够使用。

    假设出现例如以下错误信息:

    ERROR 2003 (HY000): Can't connect to MySQL server on '192.85.1.175' (111)
    sxzichen@ubutun:/var/log/mysql$ ERROR 2003 (HY000): Can't connect to MySQL server on '192.85.1.175' (111) ERROR 2003 (HY000): Can't connect to MySQL server on '192.85.1.175' (111)
    ERROR 2003 (HY000): Can't connect to MySQL server on '192.85.1.176' (111)
    sxzichen@ubutun:/var/log/mysql$ ERROR 2003 (HY000): Can't connect to MySQL server on '192.85.1.176' (111) ERROR 2003 (HY000): Can't connect to MySQL server on '192.85.1.176' (111)

    导致原因是,MYSQL数据库不同意远程訪问,须要分别改动A与Bserver 中数据库配置文件my.cnf  ,凝视掉 “   bind-address           = 127.0.0.1 ” 即为 “#bind-address           = 127.0.0.1”

    分别又一次启动MYSQLserver ,測试正常 

    3.配置数据主切换 之serverA ,改动其相应的数据配置文件----my.cnf ,在 [MYSQLD}加入例如以下行

    #mysql replication  
    server-id = 1 
    log_bin = /var/log/mysql/mysql-bin.log  
    master-host = 192.85.1.176  
    master-user = replication 
    master-password = mysqlsync 
    master-port = 3306 
    master-connect-retry = 60 
    binlog-do-db = hrkip_zhhwd 
    binlog-ignore-db = mysql   
    binlog-ignore-db = information_schema 
    binlog-ignore-db = phpmyadmin 
    replicate-do-db = hrkip_zhhwd    
    replicate-ignore-db = mysql,information_schema 

    配置信息简介:

    server-id               = 1    #主机标示,整数
    log_bin                 = /var/log/mysql/mysql-bin.log   #确保此文件可写
    binlog-do-db         =hrkip_zhhwd   #须要备份数据,多个写多行
    binlog-ignore-db    =mysql #不须要备份的数据库,多个写多行

    master-user = replication   #远程登录数据库username称
    master-password = mysqlsync #远程登录数据库用户密码
    master-port = 3306 #远程数据库server端口号,能够使用 show variables like 'port'; 命令查看,必要与目标数据库server端口号一致

    4.配置数据主切换 之serverB ,改动其相应的数据配置文件----my.cnf ,在 [MYSQLD}加入例如以下行

    #mysql replication  
    server-id = 2 
    log_bin = /var/log/mysql/mysql-bin.log  
    master-host = 192.85.1.175  
    master-user = replication 
    master-password = mysqlsync 
    master-port = 3306 
    master-connect-retry = 60 
    binlog-do-db = hrkip_zhhwd 
    binlog-ignore-db = mysql 
    binlog-ignore-db = information_schema 
    binlog-ignore-db = phpmyadmin 
    replicate-do-db = hrkip_zhhwd 
    replicate-ignore-db = mysql,information_schema 

    5.检查配置是否正常(l两台server上分别检查):

    启动 slave 服务 ,在MYSQL命令行运行

    mysql> slave start ;                
    Query OK, 0 rows affected, 1 warning (0.00 sec)

    查看slave 状态 ,运行命令:

    mysql> show slave status G ;
    *************************** 1. row ***************************
                   Slave_IO_State: Waiting for master to send event
                      Master_Host: 192.85.1.175
                      Master_User: replication
                      Master_Port: 3306
                    Connect_Retry: 60
                  Master_Log_File: mysql-bin.000002
              Read_Master_Log_Pos: 106
                   Relay_Log_File: ubutun-relay-bin.000005
                    Relay_Log_Pos: 251
            Relay_Master_Log_File: mysql-bin.000002
                 Slave_IO_Running: Yes
                Slave_SQL_Running: Yes
                  Replicate_Do_DB: hrkip_zhhwd
              Replicate_Ignore_DB: mysql,information_schema
               Replicate_Do_Table: 
           Replicate_Ignore_Table: 
          Replicate_Wild_Do_Table: 
      Replicate_Wild_Ignore_Table: 
                       Last_Errno: 0
                       Last_Error: 
                     Skip_Counter: 0
              Exec_Master_Log_Pos: 106
                  Relay_Log_Space: 552
                  Until_Condition: None
                   Until_Log_File: 
                    Until_Log_Pos: 0
               Master_SSL_Allowed: No
               Master_SSL_CA_File: 
               Master_SSL_CA_Path: 
                  Master_SSL_Cert: 
                Master_SSL_Cipher: 
                   Master_SSL_Key: 
            Seconds_Behind_Master: 0
    Master_SSL_Verify_Server_Cert: No
                    Last_IO_Errno: 0
                    Last_IO_Error: 
                   Last_SQL_Errno: 0
                   Last_SQL_Error: 
    1 row in set (0.00 sec)
    
    ERROR: 
    No query specified

    假设须要又一次启动slave server,首先 运行 slave stop  ,再运行 reset  slave , 删除  MYSQL 数据库相应的my.cnf 文件里log_bin文件夹( /var/log/mysql/ )下的"  mysql-bin."开头的全部文件,之后又一次启动MYSQL服务,之后再运行slave start 命令 。

    6.进行測试,主备是否正常工作,slave 启动时,两个server上都启动,启动后不要任意关闭再重新启动,比如在serverA上启动后。

    在serverA数据中插入

    INSERT INTO ddgl_qdlx ( qdlxmc, lxjc, qdlxbz) VALUES
    ('175a', '75a', '175a');

    在serverB中能够看到相应的记录 。

    相同在serverB中插入 :

    INSERT INTO ddgl_qdlx (qdlx_id, qdlxmc, lxjc, qdlxbz) VALUES
    (  '176b', '76b', '176b') ;

    在serverA中能够看到相应的记录 。

    測试OK 。



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  • 原文地址:https://www.cnblogs.com/gcczhongduan/p/4256812.html
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