mysql 5.7 多源复制原创

每台mysql 服务器都需要加
my.cnf要加两个参数才可以在GTID多源复制
master-info-repository=TABLE
relay-log-info-repository=TABLE

server1:只接受下面两种数据库，这两种数据来源不同的通道,系统表不复制
replicate_do_db=db1
replicate_do_db=db2

server1 连到 slave1 

mysql> change master to master_host='10.24.220.70',master_user='repl',master_password='123',master_port=3306,master_auto_position=1 for channel 'slave1';

server1 连到 slave2 

mysql> change master to master_host='10.169.214.33',master_user='repl',master_password='123',master_port=3306,master_auto_position=1 for channel 'slave2';

server1:
mysql> start slave;    //两个通道一起起动了
Query OK, 0 rows affected (0.02 sec)

mysql> show processlist;
+----+-------------+-----------+------+---------+------+--------------------------------------------------------+------------------+
| Id | User        | Host      | db   | Command | Time | State                                                  | Info             |
+----+-------------+-----------+------+---------+------+--------------------------------------------------------+------------------+
|  2 | root        | localhost | NULL | Query   |    0 | starting                                               | show processlist |
|  8 | system user |           | NULL | Connect |    3 | Waiting for master to send event                       | NULL             |
|  9 | system user |           | NULL | Connect |    3 | Slave has read all relay log; waiting for more updates | NULL             |
| 10 | system user |           | NULL | Connect |    3 | Connecting to master                                   | NULL             |
| 11 | system user |           | NULL | Connect |    3 | Slave has read all relay log; waiting for more updates | NULL             |
+----+-------------+-----------+------+---------+------+--------------------------------------------------------+------------------+
5 rows in set (0.00 sec)

mysql> start slave;
Query OK, 0 rows affected (0.01 sec)

mysql> show slave statusG

*************************** 1. row ***************************

Slave_IO_State: Waiting for master to send event

Master_Host: 10.24.220.70

Master_User: repl

Master_Port: 3306

Connect_Retry: 60

Master_Log_File: log.000001

Read_Master_Log_Pos: 714

Relay_Log_File: relay-log-slave1.000002

Relay_Log_Pos: 642

Relay_Master_Log_File: log.000001

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

Replicate_Do_DB: db1,db2

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: 714

Relay_Log_Space: 850

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: 101

Master_UUID: 1915a42e-ffa2-11e5-a6ca-00163e000601

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: 1915a42e-ffa2-11e5-a6ca-00163e000601:3

Executed_Gtid_Set: 1915a42e-ffa2-11e5-a6ca-00163e000601:1-3,

191683db-ffa2-11e5-a424-00163e0007d3:1-3,

191f7a9f-ffa2-11e5-a825-00163e00242a:1

Auto_Position: 1

Replicate_Rewrite_DB:

Channel_Name: slave1

Master_TLS_Version:

*************************** 2. row ***************************