mysql replication配置

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mysql replication配置
1、修改主機（master）的設定檔(my.cnf)
server_id = 1
log_bin = mysql-bin

2、修改從機（slave）設定檔
#主備環境下需要唯一
server_id = 2

3、主機建立複製分發使用者，並授權進行複製分發
CREATE USER ‘repl‘@‘%.mydomain.com‘ IDENTIFIED BY ‘slavepass‘;
GRANT REPLICATION SLAVE ON *.* TO ‘repl‘;

4、重新啟動主機，使配置生效

5、擷取主機複製發佈點
FLUSH TABLES WITH READ LOCK;
SHOW MASTER STATUS;
UNLOCK TABLES;
獲得類似如下結果
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000003 | 73 | test | manual,mysql |
+------------------+----------+--------------+------------------+
其中file/position欄位需要在從機使用

6、重新啟動從機

7、設定從機的主機資訊
語句類似如下
CHANGE MASTER TO MASTER_HOST=‘master_host_name‘,MASTER_USER=‘replication_user_name‘,MASTER_PASSWORD=‘replication_password‘,MASTER_LOG_FILE=‘recorded_log_file_name‘,MASTER_LOG_POS=recorded_log_position;
其中
MASTER_LOG_FILE=‘recorded_log_file_name‘中recorded_log_file_name為show master status中的file欄位內容
MASTER_LOG_POS=recorded_log_position中recorded_log_position為show master status中的Position欄位內容

SHOW SLAVE STATUS得到類似如下內容
+----------------------------------+-----------------+-------------+-------------+---------------+------------------+---------------------+----------------------------+---------------+-----------------------+------------------+-------------------+-----------------+---------------------+--------------------+------------------------+-------------------------+-----------------------------+------------+------------+--------------+---------------------+-----------------+-----------------+----------------+---------------+--------------------+--------------------+--------------------+-----------------+-------------------+----------------+-----------------------+-------------------------------+---------------+---------------+----------------+----------------+-----------------------------+------------------+--------------------------------------+--------------------------------------------------------+-----------+---------------------+-----------------------------------------------------------------------------+--------------------+-------------+-------------------------+--------------------------+----------------+--------------------+--------------------+-------------------+---------------+
| Slave_IO_State | Master_Host | Master_User | Master_Port | Connect_Retry | Master_Log_File | Read_Master_Log_Pos | Relay_Log_File | Relay_Log_Pos | Relay_Master_Log_File | Slave_IO_Running | Slave_SQL_Running | Replicate_Do_DB | Replicate_Ignore_DB | Replicate_Do_Table | Replicate_Ignore_Table | Replicate_Wild_Do_Table | Replicate_Wild_Ignore_Table | Last_Errno | Last_Error | Skip_Counter | Exec_Master_Log_Pos | Relay_Log_Space | Until_Condition | Until_Log_File | Until_Log_Pos | Master_SSL_Allowed | Master_SSL_CA_File | Master_SSL_CA_Path | Master_SSL_Cert | Master_SSL_Cipher | Master_SSL_Key | Seconds_Behind_Master | Master_SSL_Verify_Server_Cert | Last_IO_Errno | Last_IO_Error | Last_SQL_Errno | Last_SQL_Error | Replicate_Ignore_Server_Ids | Master_Server_Id | Master_UUID | Master_Info_File | SQL_Delay | SQL_Remaining_Delay | Slave_SQL_Running_State | Master_Retry_Count | Master_Bind | Last_IO_Error_Timestamp | Last_SQL_Error_Timestamp | Master_SSL_Crl | Master_SSL_Crlpath | Retrieved_Gtid_Set | Executed_Gtid_Set | Auto_Position |
+----------------------------------+-----------------+-------------+-------------+---------------+------------------+---------------------+----------------------------+---------------+-----------------------+------------------+-------------------+-----------------+---------------------+--------------------+------------------------+-------------------------+-----------------------------+------------+------------+--------------+---------------------+-----------------+-----------------+----------------+---------------+--------------------+--------------------+--------------------+-----------------+-------------------+----------------+-----------------------+-------------------------------+---------------+---------------+----------------+----------------+-----------------------------+------------------+--------------------------------------+--------------------------------------------------------+-----------+---------------------+-----------------------------------------------------------------------------+--------------------+-------------+-------------------------+--------------------------+----------------+--------------------+--------------------+-------------------+---------------+
| Waiting for master to send event | 192.168.153.128 | repl | 3306 | 60 | mysql-bin.000019 | 800 | localhost-relay-bin.000003 | 676 | mysql-bin.000019 | Yes | Yes | | | | | | | 0 | | 0 | 800 | 853 | None | | 0 | No | | | | | | 0 | No | 0 | | 0 | | | 1 | aaf47eb1-fa78-11e3-a424-000c2932455f | /home/jiangyx/mysql/replication/slave/data/master.info | 0 | NULL | Slave has read all relay log; waiting for the slave I/O thread to update it | 86400 | | | | | | | | 0 |
+----------------------------------+-----------------+-------------+-------------+---------------+------------------+---------------------+----------------------------+---------------+-----------------------+------------------+-------------------+-----------------+---------------------+--------------------+------------------------+-------------------------+-----------------------------+------------+------------+--------------+---------------------+-----------------+-----------------+----------------+---------------+--------------------+--------------------+--------------------+-----------------+-------------------+----------------+-----------------------+-------------------------------+---------------+---------------+----------------+----------------+-----------------------------+------------------+--------------------------------------+--------------------------------------------------------+-----------+---------------------+-----------------------------------------------------------------------------+--------------------+-------------+-------------------------+--------------------------+----------------+--------------------+--------------------+-------------------+---------------+
其中Slave_IO_Running / Slave_SQL_Running都為yes表示成功

注意：
1、如果slave是通過拷貝整個mysql的data，那麼需要修改data目錄下的auto.cnf檔案的uuid，以確保主機和備機的uuid不相同。否則show slave status中會有報錯資訊“Fatal error: The slave I/O thread stops because master and slave have equal MySQL server UUIDs; these UUIDs must be different for replication to work. ”

參考：
1、http://dev.mysql.com/doc/refman/5.6/en/replication-howto.html