window下如何开启并使用mysql5.7的federated存储引擎

federated是默认关闭的，所以需要先开启它

首先找到mysql的安装目录。找到启动文件

my.ini

用编辑器打开my.ini在末尾添加

#开启federated
federated

重启mysql，以管理员权限启动cmd

C:\WINDOWS\system32>net stop mysql
MySQL 服务正在停止..
MySQL 服务已成功停止。

C:\WINDOWS\system32>net start mysql
MySQL 服务正在启动 .
MySQL 服务已经启动成功。

进入mysql

C:\WINDOWS\system32>mysql -uroot -p
Enter password: *********
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.20 MySQL Community Server (GPL)

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

查看引擎

mysql> show engines;
+--------------------+---------+----------------------------------------------------------------+--------------+------+-
-----------+
| Engine | Support | Comment | Transactions | XA |
Savepoints |
+--------------------+---------+----------------------------------------------------------------+--------------+------+-
-----------+
| InnoDB | DEFAULT | Supports transactions, row-level locking, and foreign keys | YES | YES |
YES |
| MRG_MYISAM | YES | Collection of identical MyISAM tables | NO | NO |
NO |
| MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO |
NO |
| BLACKHOLE | YES | /dev/null storage engine (anything you write to it disappears) | NO | NO |
NO |
| MyISAM | YES | MyISAM storage engine | NO | NO |
NO |
| CSV | YES | CSV storage engine | NO | NO |
NO |
| ARCHIVE | YES | Archive storage engine | NO | NO |
NO |
| PERFORMANCE_SCHEMA | YES | Performance Schema | NO | NO |
NO |
| FEDERATED | YES | Federated MySQL storage engine | NO | NO |
NO |
+--------------------+---------+----------------------------------------------------------------+--------------+------+-
-----------+
9 rows in set (0.00 sec)

mysql>
FEDERATED 后变成YES ，已开启

建立本地库

mysql> create database local;
Query OK, 1 row affected (0.00 sec)

在远程数据库mysql上建立远程库remote库，可以使用innodb引擎

CREATE TABLE `remote` (
`id` int(11) NOT NULL,
`c1` varchar(10) NOT NULL,
`c2` varchar(10) NOT NULL
) ENGINE=InnoDB；

插入数据

insert into remote values(1,'2','2'),(2,'2','2');

查询远程数据库

mysql> select * from remote;
+----+----+----+
| id | c1 | c2 |
+----+----+----+
| 1 | 2 | 2 |
| 2 | 2 | 2 |
+----+----+----+
2 rows in set (1.55 sec)

然后在远程数据库上给予本地数据库crud的权限

mysql> grant select,update,insert ,delete on remote.remote to lock_link@'xxx.xxx.xxx' identified by '123456';
Query OK, 0 rows affected, 1 warning (0.21 sec)

remote.remote 当前数据库remote库下的remote

lock_link为权限账户

123456为权限密码

xxx.xxx.xxx为本地数据库的外网ip

在本地建立存储引擎为federated表：

CREATE TABLE `remote` (

`id` int(11) NOT NULL,

`c1` varchar(10) NOT NULL,

`c2` varchar(10) NOT NULL

) ENGINE=federated connection='mysql://lock_link:[email protected]:3306/remote/remote';

lock_link:123456 为在远程数据库上设置的权限账户和密码

此处xxx.xxx.xxx:3306为远端数据库的外网ip，请保证ping的通,数据库端口

remote/remote远程数据库下的remote库下的remote

然后没有插入，直接查看本地remote表

mysql> select * from remote;
+----+----+----+
| id | c1 | c2 |
+----+----+----+
| 1 | 2 | 2 |
| 2 | 2 | 2 |
+----+----+----+
2 rows in set (1.55 sec)

本地只储存了该表的数据结构，即以.frm为后缀的文件，数据储存在远端数据库里

window下如何开启并使用mysql5.7的federated存储引擎

猜你喜欢