MySQL5.6基于GTID的主从复制_MySQL

MySQL 5.6 的新特性之一，是加入了全局事务 ID (GTID) 来强化数据库的主备一致性，故障恢复，以及容错能力。

什么是GTID？

官方文档： 代码如下:

mysql> GRANT REPLICATION SLAVE ON *.* TO repluser@172.16.88.205 IDENTIFIED BY 'replpassword';

说明：172.16.88.205是从节点服务器；如果想一次性授权更多的节点，可以自行根据需要修改；

七、启动从数据库上的复制线程

mysql> CHANGE MASTER TO MASTER_HOST='masterdb.example.com', 
MASTER_USER='repluser', MASTER_PASSWORD='replpassword', MASTER_AUTO_POSITION=1;
mysql>start slave;

八、在从数据库上查看复制状态

mysql> show slave status\G;
*************************** 1. row ***************************
    Slave_IO_State: Waiting for master to send event
     Master_Host: masterdb.56xyl.com
     Master_User: repluser
     Master_Port: 3306
    Connect_Retry: 60
    Master_Log_File: mysql-bin.000002
   Read_Master_Log_Pos: 191
    Relay_Log_File: slavedb-relay-bin.000003
    Relay_Log_Pos: 401
  Relay_Master_Log_File: mysql-bin.000002
    Slave_IO_Running: Yes #IO线程已正常运行
   Slave_SQL_Running: Yes #SQL线程已正常运行
    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: 191
    Relay_Log_Space: 1899
    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: 1
     Master_UUID: 971d7245-c3f8-11e5-8b6b-000c2999e5a5
    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 the slave I/O thread to update it
   Master_Retry_Count: 86400
     Master_Bind: 
  Last_IO_Error_Timestamp: 
  Last_SQL_Error_Timestamp: 
    Master_SSL_Crl: 
   Master_SSL_Crlpath: 
   Retrieved_Gtid_Set: 971d7245-c3f8-11e5-8b6b-000c2999e5a5:1-6
   Executed_Gtid_Set: 89e78301-c3f4-11e5-8b51-00505624d26a:1-3,
971d7245-c3f8-11e5-8b6b-000c2999e5a5:1-6
    Auto_Position: 1
1 row in set (0.00 sec)

ERROR: 
No query specified

mysql>

九、测试

在主库上创建数据库：

mysql> create database log_statics;
Query OK, 1 row affected (0.11 sec)
 
mysql> use log_statics;
Database changed
到从数据库上查看log_statics是否已经复制过去
mysql> show databases;
+--------------------+
| Database   |
+--------------------+
| information_schema |
| log_statics  |
| mysql    |
| performance_schema |
+--------------------+
4 rows in set (0.01 sec)

mysql>

可以看到log_statics数据库已经存在于从数据库上。

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