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  • 通过FEDERATED存储引擎同步两实例间的表数据

    需求情景:实例1中A库中的三个视图是实例2中的B库所依赖的,B需要A库中三个视图的实时数据。

    方案:通过FEDERATED来完成跨势力的查询
    FEDERATED存储引擎表只会创建表结构,不会存储表数据,可以通过建表语句中的CONNECTION [=] 'connect_string'来指定访问远端数据的连接方式connect_string:
    scheme://user_name[:password]@host_name[:port_num]/db_name/tbl_name
    [http://dev.mysql.com/doc/refman/5.7/en/federated-create-connection.html](url)
    测试实施:
    1.本地环境:

    [root@test-01 ~]# uname -a
    Linuxtest-01 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
    [root@test-01 ~]# mysql --version
    mysql Ver 14.14 Distrib 5.6.17, for linux-glibc2.5 (x86_64) using EditLine wrapper


    2.创建FEDERATED存储引擎并启动

    mysql> show engines
    -> ;
    +--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
    | Engine | Support | Comment | Transactions | XA | Savepoints |
    +--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
    | MyISAM | YES | MyISAM storage engine | NO | NO | NO |
    | CSV | YES | CSV storage engine | NO | NO | NO |
    | MRG_MYISAM | YES | Collection of identical MyISAM tables | NO | NO | NO |
    | BLACKHOLE | YES | /dev/null storage engine (anything you write to it disappears) | NO | NO | NO |
    | MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO | NO |
    | PERFORMANCE_SCHEMA | YES | Performance Schema | NO | NO | NO |
    | ARCHIVE | YES | Archive storage engine | NO | NO | NO |
    | InnoDB | DEFAULT | Supports transactions, row-level locking, and foreign keys | YES | YES | YES |
    | FEDERATED | NO | Federated MySQL storage engine | NULL | NULL | NULL |
    +--------------------+---------+----------------------------------------------------------------+--------------+------+------------+


    默认是支持的,在配置文件中加入federated选项,并重启服务
    3.实例1A上:

    GRANT select ON test.t TO 'TEST'@'%' IDENTIFIED BY 'test';


    4.实例B上:

    mysql> CREATE TABLE `test`.`fd_test_t` ( `id` int(11) DEFAULT NULL ) ENGINE=FEDERATED DEFAULT CHARSET=utf8 CONNECTION='mysql://root:root@host:6666/test/t'; 
    Query OK, 0 rows affected (0.00 sec)


    到目前为止操作结束,现在在B上执行

    mysql> select * from fd_test_t;
    +------+
    | id |
    +------+
    | 1 |
    +------+


    就可以看到A表中test.t的数据了

    ---恢复内容结束---

    ---恢复内容开始---

    通过FEDERATED存储引擎同步两实例间的表数据
    需求情景:实例1中A库中的三个视图是实例2中的B库所依赖的,B需要A库中三个视图的实时数据。
    方案:通过FEDERATED来完成跨势力的查询
    FEDERATED存储引擎表只会创建表结构,不会存储表数据,可以通过建表语句中的CONNECTION [=] 'connect_string'来指定访问远端数据的连接方式connect_string:
    scheme://user_name[:password]@host_name[:port_num]/db_name/tbl_name
    [http://dev.mysql.com/doc/refman/5.7/en/federated-create-connection.html](url)
    测试实施:
    1.本地环境:

    [root@test-01 ~]# uname -a
    Linuxtest-01 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
    [root@test-01 ~]# mysql --version
    mysql Ver 14.14 Distrib 5.6.17, for linux-glibc2.5 (x86_64) using EditLine wrapper


    2.创建FEDERATED存储引擎并启动

    mysql> show engines
    -> ;
    +--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
    | Engine | Support | Comment | Transactions | XA | Savepoints |
    +--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
    | MyISAM | YES | MyISAM storage engine | NO | NO | NO |
    | CSV | YES | CSV storage engine | NO | NO | NO |
    | MRG_MYISAM | YES | Collection of identical MyISAM tables | NO | NO | NO |
    | BLACKHOLE | YES | /dev/null storage engine (anything you write to it disappears) | NO | NO | NO |
    | MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO | NO |
    | PERFORMANCE_SCHEMA | YES | Performance Schema | NO | NO | NO |
    | ARCHIVE | YES | Archive storage engine | NO | NO | NO |
    | InnoDB | DEFAULT | Supports transactions, row-level locking, and foreign keys | YES | YES | YES |
    | FEDERATED | NO | Federated MySQL storage engine | NULL | NULL | NULL |
    +--------------------+---------+----------------------------------------------------------------+--------------+------+------------+


    默认是支持的,在配置文件中加入federated选项,并重启服务
    3.实例1A上:

    GRANT select ON test.t TO 'TEST'@'%' IDENTIFIED BY 'test';


    4.实例B上:

    mysql> CREATE TABLE `test`.`fd_test_t` ( `id` int(11) DEFAULT NULL ) ENGINE=FEDERATED DEFAULT CHARSET=utf8 CONNECTION='mysql://root:root@host:6666/test/t'; 
    Query OK, 0 rows affected (0.00 sec)


    到目前为止操作结束,现在在B上执行

    mysql> select * from fd_test_t;
    +------+
    | id |
    +------+
    | 1 |
    +------+


    就可以看到A表中test.t的数据了

    ---恢复内容结束---

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  • 原文地址:https://www.cnblogs.com/Bccd/p/8496779.html
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