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80 lines
2.0 KiB
Markdown
80 lines
2.0 KiB
Markdown
# Cetus MySQL准备说明
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MySQL建议使用5.7.16以上版本
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## 创建数据库实例
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创建数据库实例，以及Cetus连接MySQL的用户和密码。
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例如：
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Cetus所在的主机ip为192.0.0.1
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CREATE database if not exists testdb;
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GRANT USAGE ON *.* TO 'cetus_app'@'192.0.0.1' identified by 'cetus_app';
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GRANT all ON `testdb`.* TO 'cetus_app'@'192.0.0.1';
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## 读写分离版MySQL环境准备
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若使用读写分离功能则需要搭建MySQL主从关系，若开启读写延迟检测需要创建心跳库和表
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### 搭建MySQL主从关系
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例如：
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- 在主库上操作：
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**创建repl用户**
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192.0.0.1为MySQL从库ip
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CREATE USER 'repl'@'192.0.0.1' IDENTIFIED BY 'xxxxxx';
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REVOKE ALL PRIVILEGES ,GRANT OPTION FROM 'repl'@'192.0.0.1';
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GRANT RELOAD,LOCK TABLES, REPLICATION CLIENT ,REPLICATION SLAVE ON *.* TO 'repl'@'192.0.0.1';
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FLUSH PRIVILEGES;
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- 在从库上操作：
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**开启主从复制**
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MySQL主库ip为192.0.0.1
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1) 非gtid
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change master TO master_host='192.0.0.1',
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master_user='repl',master_password='xxxxxx',
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master_port=3306,master_log_file='mysql-bin.000001',
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master_log_pos=1124;
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start slave;
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2) gtid
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CHANGE MASTER TO
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MASTER_HOST='192.0.0.1',
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MASTER_USER='repl',
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MASTER_PASSWORD='xxxxxx',
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MASTER_PORT=3306,
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master_auto_position=1,
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MASTER_CONNECT_RETRY=10;
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start slave;
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### 主从延迟检测准备
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创建心跳库和心跳表，并为用户授权
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例如：
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Cetus所在的主机ip为192.0.0.1
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create database if not exists proxy_heart_beat;
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use proxy_heart_beat;
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CREATE TABLE if not exists `tb_heartbeat` (
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`p_id` varchar(128) NOT NULL ,
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`p_ts` timestamp(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
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PRIMARY KEY (`p_id`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8;
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GRANT ALL ON `proxy_heart_beat`.* TO 'cetus_app'@'192.0.0.1';
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## sharding版MySQL环境准备
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若使用sharding功能，则需要根据业务创建业务表，并进行分库设计,若开启主从延迟检测，请参考读写分离版本配置心跳库和心跳表。
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