Replication基础(二) 搭建主从复制

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简介

本文接上一篇文章，[Replication基础(一) MySQL数据库单机多实例安装][1]
在已经存在的单机多实例环境中搭建主从复制，假设以13307端口的实例为主机，13308端口的实例为从机，搭建主从复制。

步骤

• 在主库上创建复制账号，从机使用此账号进行复制链接。如下：

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

• 从机通过change master命令填充复制信息

mysql> change master to
    -> master_host='127.0.0.1',
    -> master_port=13307,
    -> master_user='rpl',
    -> master_password='rpl',
    -> master_auto_position=1
    -> for channel 'master_13307';
Query OK, 0 rows affected, 2 warnings (0.04 sec)

• 启动复制

start slave;

• 查看复制状态

mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 127.0.0.1
                  Master_User: rpl
                  Master_Port: 13307
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000001
          Read_Master_Log_Pos: 456
               Relay_Log_File: mysql-relay-bin-master_13307.000002
                Relay_Log_Pos: 669
        Relay_Master_Log_File: mysql-bin.000001
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB:
          Replicate_Ignore_DB:
           Replicate_Do_Table:
       Replicate_Ignore_Table: mysql.ibbackup_binlog_marker
      Replicate_Wild_Do_Table:
  Replicate_Wild_Ignore_Table: mysql.backup_%
                   Last_Errno: 0
                   Last_Error:
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 456
              Relay_Log_Space: 889
              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: 12713307
                  Master_UUID: 08abd9a8-a5e9-11e8-bcc6-000c29fc1d1b
             Master_Info_File: mysql.slave_master_info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
           Master_Retry_Count: 86400
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp:
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set: 08abd9a8-a5e9-11e8-bcc6-000c29fc1d1b:1
            Executed_Gtid_Set: 08abd9a8-a5e9-11e8-bcc6-000c29fc1d1b:1
                Auto_Position: 1
         Replicate_Rewrite_DB:
                 Channel_Name: master_13307
           Master_TLS_Version:
1 row in set (0.00 sec)

结束语

然后就可以在主库上执行操作，看看从机是否同步了。