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otter 自由门使用方法

news 2025/10/30 16:30:05

otteer自由门完成全量数据同步方法：

一、先参考otter官方文档完成channel的配置

二、涉及的部分数据库操作
（1）数据库账户授权
   CREATE USER retl@'%' IDENTIFIED BY 'retl';
   GRANT USAGE ON *.* TO `retl`@'%';
   GRANT SELECT, REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO `retl`@'%';
   GRANT SELECT, INSERT, UPDATE, DELETE, EXECUTE ON `retl`.* TO `retl`@'%';
   /* 业务表授权，这里可以限定只授权同步业务的表 */
   GRANT SELECT, INSERT, UPDATE, DELETE ON *.* TO `retl`@'%';

（2）删除现有的系统表
   DROP TABLE IF EXISTS retl.retl_buffer;
   DROP TABLE IF EXISTS retl.retl_mark;
   DROP TABLE IF EXISTS retl.xdual;

（3）创建系统表
   CREATE TABLE retl_buffer
   (
   ID BIGINT(20) AUTO_INCREMENT,
   TABLE_ID INT(11) NOT NULL,
   FULL_NAME varchar(512),
   TYPE CHAR(1) NOT NULL,
   PK_DATA VARCHAR(256) NOT NULL,
   GMT_CREATE TIMESTAMP NOT NULL,
   GMT_MODIFIED TIMESTAMP NOT NULL,
   CONSTRAINT RETL_BUFFER_ID PRIMARY KEY (ID)
   ) ENGINE=InnoDB DEFAULT CHARSET=utf8;

   CREATE TABLE retl_mark
   (
   ID BIGINT AUTO_INCREMENT,
   CHANNEL_ID INT(11),
   CHANNEL_INFO varchar(128),
   CONSTRAINT RETL_MARK_ID PRIMARY KEY (ID)
   ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

   CREATE TABLE xdual (
   ID BIGINT(20) NOT NULL AUTO_INCREMENT,
   X timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
   PRIMARY KEY (ID)
   ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=UTF8;

（4）插入初始化数据
INSERT INTO retl.xdual(id, x) VALUES (1,now()) ON DUPLICATE KEY UPDATE x = NOW();
（5）同步一条数据
insert into `retl`.`retl_buffer` ( `TABLE_ID`, `FULL_NAME`, `TYPE`, `PK_DATA`, `GMT_CREATE`, `GMT_MODIFIED`) values ('4', 'db_user.t_user_test', 'I', '1', now(), NOW());

（6）全量数据同步
insert into retl.retl_buffer(ID,TABLE_ID, FULL_NAME,TYPE,PK_DATA,GMT_CREATE,GMT_MODIFIED)
(select null,4,'db_user.t_user_test','I',id,now(),now() from db_user.t_user_test);

三、涉及的参考文献：
https://www.modb.pro/db/562955

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