MySQL5.5讀寫分離配置的詳解

讀寫分可以實現數據庫性能的保證了同時也可以做到數據實時備份了，下面我們來看一篇MySQL5.5讀寫分離配置的教程，希望對各位新手有幫助。

一、服務器配置

主庫：192.168.204.132
vim /etc/my.cnf
server-id= 1
log-bin=mysql-bin
binlog_format=mixed
#需要同步的二進制數據庫名
binlog-do-db=test
#不同步的二進制數據庫名
binlog-ignore-db=mysql
binlog-ignore-db=performance_schema
#可選參數
sync-binlog = 1
#日志保留天數
expire_logs_days = 7
從庫：192.168.204.134
vim /etc/my.cnf
server-id=2
log-bin=mysql-bin
binlog_format=mixed
#不需要復制的數據庫
replicate-ignore-db=mysql
replicate-ignore-db=performance_schema
#需要復制的數據庫
replicate-do-db=test
#可選參數
sync-binlog = 1
expire_logs_days = 7

二、設置主從

主庫：
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;

從庫：
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;
#上面參數注意對照主庫
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)