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MySql主从复制配置示例_MySQL

May 30, 2016 pm 05:11 PM
Example

最近研究mysql,从oracle官网下了一个最新的5.6的mysql,压缩版的。今天尝试一下Mysql的复制功能,花了好久才整出来,把心得分享出来。

用的是我们开发用的库,部署在测试环境,测试环境的mysql版本居然是5.1的。

1.主服务器配置

cd /etc,找到my.cnf,然后再这个配置文件加上复制要用的配置

 

server-id       = 1
log-bin=mysql-bin
binlog-do-db=wx
Copy after login

主服务器需要一个独一无二的server id,log-bin表示启用二进制日志,binlog-do-db表示选择记录日志的数据库

2.从机配置

打开my.ini,加上和服务器类似的配置

server-id=2
log-bin=mysql-bin 
replicate-do-db=wx
Copy after login

3.将主机上的wx数据库拷给从机。这步一定要执行,不然后面一定会报错。我就是忽略了这一步,导致试了好几次都没有成功!当然,这一步可以用任何方法做,用工具,用mysqldump后从机执行都可以。

4.主机上建复制账号

主机的mysql命令行下执行如下命令,建一个用来复制的账号,和密码

grant replication slave  
on *.*  
to 'replication'@'%' identified by '123'; 
Copy after login

然后查主机的状态

mysql> show master status\G
*************************** 1. row ***************************
            File: mysql-bin.000003
        Position: 256
    Binlog_Do_DB: wx
Binlog_Ignore_DB: 
1 row in set (0.00 sec)
Copy after login

Position和File都是后面有用的

5.从机关联主机操作

从机上执行关联主机的命令,并重启从机。

change master to  
master_host = '192.168.146.120',  
master_user = 'replication',  
master_password = '123',  
master_log_file = 'mysql-bin.000003',  
master_log_pos = 256;  
start slave; 
Copy after login

6.验证操作

主机上wx库找张表,插入一条语句,从机立刻复制过来。

查看从机状态。

mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.146.120
                  Master_User: replication
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000003
          Read_Master_Log_Pos: 708
               Relay_Log_File: CDYJY-LVSHENG1-relay-bin.000004
                Relay_Log_Pos: 265
        Relay_Master_Log_File: mysql-bin.000003
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: wx
          Replicate_Ignore_DB:
           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: 708
              Relay_Log_Space: 588
              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:
  Replicate_Ignore_Server_Ids:
             Master_Server_Id: 1
                  Master_UUID:
             Master_Info_File: D:\DevelopTools\DB\mysql-5.6.26-winx64\data\master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
           Master_Retry_Count: 86400
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp:
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set:
            Executed_Gtid_Set:
                Auto_Position: 0
1 row in set (0.00 sec)
Copy after login

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