MySQL5.6-》5.7
Posted 杨新春
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本次实验将使用mysql 5.6.x作为多“主”。
〇 测试环境:
OS:CentOS 6.5
master_1: 192.168.1.185(MySQL 5.6.30)
master_2: 192.168.1.186(MySQL 5.6.30)
slave: 192.168.1.1.187(MySQL 5.7.15)
〇 配置:
master_1相关配置:
- [mysqld]
- server_id = 185
- log-bin = master_1
- log-bin-index = master_1.index
master_2相关配置:
- [mysqld]
- server_id = 186
- log-bin = master_2
- log-bin-index = master_2.index
slave相关配置:
- [mysqld]
- server_id = 187
- relay-log = slave
- relay-log-index = slave.index
- # 多源复制结构中的slave,官方要求master-info和relay-log-info存放处必须为TABLE.
- # 如果为FILE,则在添加多个master时,会失败:ER_SLAVE_NEW_CHANNEL_WRONG_REPOSITORY.
- master-info-repository = TABLE
- relay-log-info-repository = TABLE
〇 为master_1 & master_2上建立复制用户:
- GRANT REPLICATION SLAVE ON *.* to [email protected]‘192.168.1.187‘ IDENTIFIED BY ‘repl‘;
- FLUSH PRIVILEGES;
〇 测试数据准备:
master_1测试数据:
- master_1> FLUSH LOGS;
- Query OK, 0 rows affected (0.00 sec)
- master_1> SHOW BINARY LOGS; -- 记住当前binlog的name和position
- +-----------------+-----------+
- | Log_name | File_size |
- +-----------------+-----------+
- | master_1.000001 | 166 |
- | master_1.000002 | 455 |
- | master_1.000003 | 120 |
- +-----------------+-----------+
- 3 rows in set (0.00 sec)
- master_1> CREATE DATABASE master_1;
- Query OK, 1 row affected (0.03 sec)
master_2测试数据:
- master_2> FLUSH LOGS;
- Query OK, 0 rows affected (0.00 sec)
- master_2> SHOW BINARY LOGS; -- 记住当前binlog的name和position
- +-----------------+-----------+
- | Log_name | File_size |
- +-----------------+-----------+
- | master_2.000001 | 166 |
- | master_2.000002 | 455 |
- | master_2.000003 | 120 |
- +-----------------+-----------+
- 3 rows in set (0.00 sec)
- master_2> CREATE DATABASE master_2;
- Query OK, 1 row affected (0.02 sec)
〇 在slave上执行:
- salve> CHANGE MASTER TO
- -> MASTER_HOST=‘192.168.1.185‘,
- -> MASTER_USER=‘repl‘,
- -> MASTER_PORT=3306,
- -> MASTER_PASSWORD=‘repl‘,
- -> MASTER_LOG_FILE=‘master_1.000003‘,
- -> MASTER_LOG_POS=120
- -> FOR CHANNEL ‘master_1‘;
- Query OK, 0 rows affected, 2 warnings (0.02 sec) -- 此处产生的warnings是一些安全建议和警告,本实验无视。
- salve> CHANGE MASTER TO
- -> MASTER_HOST=‘192.168.1.186‘,
- -> MASTER_USER=‘repl‘,
- -> MASTER_PORT=3306,
- -> MASTER_PASSWORD=‘repl‘,
- -> MASTER_LOG_FILE=‘master_2.000003‘,
- -> MASTER_LOG_POS=120
- -> FOR CHANNEL ‘master_2‘;
- Query OK, 0 rows affected, 2 warnings (0.02 sec)
- slave> START SLAVE;
- Query OK, 0 rows affected (0.01 sec)
- salve> SHOW DATABASES; -- 此时在master_1和master_2上的binlog events已经被正常的apply了
- +--------------------+
- | Database |
- +--------------------+
- | information_schema |
- | master_1 |
- | master_2 |
- | mysql |
- | performance_schema |
- | sys |
- +--------------------+
- 6 rows in set (0.00 sec)
最后通过start slave status即可查到复制状态
- slave> SHOW SLAVE STATUSG
- *************************** 1. row ***************************
- Slave_IO_State: Waiting for master to send event
- Master_Host: 192.168.1.185
- Master_User: repl
- Master_Port: 3306
- ……………………………………………………
- Slave_IO_Running: Yes
- Slave_SQL_Running: Yes
- ……………………………………………………
- Master_Server_Id: 185
- Master_UUID: ee1f8704-58c4-11e6-95b5-000c297f23b7
- 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
- ……………………………………………………
- Channel_Name: master_1
- Master_TLS_Version:
- *************************** 2. row ***************************
- Slave_IO_State: Waiting for master to send event
- Master_Host: 192.168.1.186
- Master_User: repl
- Master_Port: 3306
- Connect_Retry: 60
- ……………………………………………………
- Slave_IO_Running: Yes
- Slave_SQL_Running: Yes
- ……………………………………………………
- Master_Server_Id: 186
- Master_UUID: 53774f2d-7e14-11e6-8900-000c298e914c
- 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
- ……………………………………………………
- Channel_Name: master_2
- Master_TLS_Version:
- 2 rows in set (0.00 sec)
〇 测试:
master_1上操作:
- master_1> CREATE TABLE master_1.test_table(id int);
- Query OK, 0 rows affected (0.05 sec)
- master_1> INSERT INTO master_1.test_table SELECT 666666;
- Query OK, 1 row affected (0.01 sec)
- Records: 1 Duplicates: 0 Warnings: 0
master_2上操作:
- master_2> CREATE TABLE master_2.test_table(massage varchar(16));
- Query OK, 0 rows affected (0.02 sec)
- master_2> INSERT INTO master_2.test_table SELECT ‘嘿嘿嘿‘;
- Query OK, 1 row affected (0.00 sec)
- Records: 1 Duplicates: 0 Warnings: 0
- master_2> INSERT INTO master_2.test_table SELECT ‘三阳之炎‘;
- Query OK, 1 row affected (0.00 sec)
- Records: 1 Duplicates: 0 Warnings: 0
slave上操作:
- salve> SELECT id FROM master_1.test_table;
- +--------+
- | id |
- +--------+
- | 666666 |
- +--------+
- 1 row in set (0.00 sec)
- salve> SELECT massage FROM master_2.test_table;
- +--------------+
- | massage |
- +--------------+
- | 嘿嘿嘿 |
- | 三阳之炎 |
- +--------------+
- 2 rows in set (0.00 sec)
〇 其他相关语法:
- START/STOP/RESET ALL/RESET SLAVE FOR CHANNEL ‘XXX‘;
- SHOW SLAVE STATUS FOR CHANNEL ‘XXX‘;
ps.
与上述传统position方式类似,GTID方式配置起来也类似,开启GTID后,需要注意使用FOR CHANNEL ‘xxx‘关键字即可,比如:
- CHANGE MASTER TO
- MASTER_HOST=‘‘,
- MASTER_USER=‘repl‘,
- MASTER_PORT=3306,
- MASTER_PASSWORD=‘repl‘,
- MASTER_AUTO_POSITION = 1
- FOR CHANNEL ‘master_1‘;
多台主机的schema名字不可以一样,(比如master_1为db_00 ... db_09共10库,master_2为db_10 ... db_19,master_3为db_20 ... db_29 ……)
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