MySQL5.5读写分离配置的详解

一、服务器配置

主库：192.168.204.132
vim /etc/my.cnf
server-id= 1
log-bin=mysql-bin
binlog_format=mixed
#需要同步的二进制数据库名
binlog-do-db=test
#不同步的二进制数据库名
binlog-ignore-db=mysql
binlog-ignore-db=performance_schema
#可选参数
sync-binlog = 1
#日志保留天数
expire_logs_days = 7
从库：192.168.204.134
vim /etc/my.cnf
server-id=2
log-bin=mysql-bin
binlog_format=mixed
#不需要复制的数据库
replicate-ignore-db=mysql
replicate-ignore-db=performance_schema
#需要复制的数据库
replicate-do-db=test
#可选参数
sync-binlog = 1
expire_logs_days = 7

二、设置主从

主库：
mysql> SHOW MASTER STATUS;
------------------ ---------- -------------- --------------------------
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB         |
------------------ ---------- -------------- --------------------------
| mysql-bin.000026 |      302 | test         | mysql,performance_schema |
------------------ ---------- -------------- --------------------------
mysql>GRANT REPLICATION SLAVE ON *.* TO 'root'@'192.168.204.134' IDENTIFIED BY '123456';
mysql>FLUSH PRIVILEGES;

从库：
mysql> CHANGE MASTER TO MASTER_HOST='192.168.204.132',MASTER_USER='root', MASTER_PASSWORD='123456',MASTER_LOG_FILE='mysql-bin.000026',MASTER_LOG_POS=302;
#上面参数注意对照主库
mysql> slave stop;
mysql> slave start;
mysql> show slave status \G;
*************************** 1. row ***************************
               Slave_IO_State: Connecting to master
                  Master_Host: 192.168.204.132
                  Master_User: root
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000026
          Read_Master_Log_Pos: 302
               Relay_Log_File: localhost-relay-bin.000001
                Relay_Log_Pos: 4
        Relay_Master_Log_File: mysql-bin.000026
             Slave_IO_Running: Connecting
            Slave_SQL_Running: Yes
              Replicate_Do_DB: test
          Replicate_Ignore_DB: mysql,performance_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: 302
              Relay_Log_Space: 107
              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: NULL
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: 0
1 row in set (0.00 sec)

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