MYSQL 主从复制案例－空数据库-优快云博客

本文详细介绍了如何在三台MySQL服务器上部署环形复制结构，包括环境准备、配置文件修改、复制用户设置及复制进程配置等关键步骤。

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1.环境准备：
安装好三台MYSQL服务器。

A	192.168.1.8
B	192.168.1.88
C	192.168.1.188

环形结构：

192.168.1.8主     192.168.1.88从
	     192.168.1.88主   192.168.1.188从
	     192.168.1.188主  192.168.1.8从

2.更改配置文件/etc/my.cnf
增加以下内容：

log-bin=mysql-bin
slave-skip-errors=all
log-slave-updates
skip-name-resolve

在配置文件中修改： server-id 分别是 server-id=1 2 3

3.重启三个节点的MYSQL。

/home/mysql/mysql/support-files/mysql.server restart

4.添加复制用户。在每个节点都如此操作。

 grant replication slave on *.* to 'replication'@'%' identified by 'replication';


 grant all privileges on *.* to replication@'%' identified by 'replication';

4.配置复制进程：
（1） 192.168.1.8主 192.168.1.88从配置

A节点：show master status
    -> ;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000006 |      107 |              |                  |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
B节点：
CHANGE MASTER TO MASTER_HOST='192.168.0.93',MASTER_PORT=3306,MASTER_USER='replication',MASTER_PASSWORD='replication',MASTER_LOG_FILE='mysql-bin.000001',MASTER_LOG_POS=193;


start slave;


show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.1.88
                  Master_User: replication
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000006
          Read_Master_Log_Pos: 107
               Relay_Log_File: localhost-relay-bin.000015
                Relay_Log_Pos: 253
        Relay_Master_Log_File: mysql-bin.000006
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: 
          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: 107
              Relay_Log_Space: 559
              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: 2
1 row in set (0.00 sec)


（2）192.168.1.88主  192.168.1.188从配置
B节点：show master status;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000006 |      107 |              |                  |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)


C节点配置：
CHANGE MASTER TO MASTER_HOST='192.168.1.8',MASTER_PORT=3306,MASTER_USER='replication',MASTER_PASSWORD='replication',MASTER_LOG_FILE='mysql-bin.000006',MASTER_LOG_POS=107;


start slave;


show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.1.88
                  Master_User: replication
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000006
          Read_Master_Log_Pos: 107
               Relay_Log_File: localhost-relay-bin.000017
                Relay_Log_Pos: 253
        Relay_Master_Log_File: mysql-bin.000006
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: 
          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: 107
              Relay_Log_Space: 559
              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: 2
1 row in set (0.00 sec)


(3)192.168.1.188主  192.168.1.8从配置
C节点：show master status
    -> ;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000005 |      107 |              |                  |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)


A节点配置：
CHANGE MASTER TO MASTER_HOST='192.168.1.8',MASTER_PORT=3306,MASTER_USER='replication',MASTER_PASSWORD='replication',MASTER_LOG_FILE='mysql-bin.000005',MASTER_LOG_POS=107;


start slave;


show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.1.88
                  Master_User: replication
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000006
          Read_Master_Log_Pos: 107
               Relay_Log_File: localhost-relay-bin.000015
                Relay_Log_Pos: 253
        Relay_Master_Log_File: mysql-bin.000006
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: 
          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: 107
              Relay_Log_Space: 559
              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: 2
1 row in set (0.00 sec)