mycat 垂直切分和水平切分配置示例

mycat 垂直切分和水平切分配置示例

首先是数据库表的分布：
192.168.0.83：db1数据库 test1表；db3数据库 user表 user_detail表
192.168.0.165：db1数据库 test2表；db3数据库 user表 user_detail表
sql：

/*Navicat MySQL Data TransferSource Server         : localhostSource Server Version : 50713Source Host           : localhost:3306Source Database       : db1Target Server Type    : MYSQLTarget Server Version : 50713File Encoding         : 65001Date: 2016-08-26 17:23:56*/SET FOREIGN_KEY_CHECKS=0;-- ------------------------------ Table structure for `test1`-- ----------------------------DROP TABLE IF EXISTS `test1`;CREATE TABLE `test1` (  `id` int(11) NOT NULL,  `name` varchar(255) DEFAULT NULL,  PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8;-- ------------------------------ Records of test1-- ----------------------------/*Navicat MySQL Data TransferSource Server         : localhostSource Server Version : 50713Source Host           : localhost:3306Source Database       : db3Target Server Type    : MYSQLTarget Server Version : 50713File Encoding         : 65001Date: 2016-08-26 17:24:04*/SET FOREIGN_KEY_CHECKS=0;-- ------------------------------ Table structure for `user`-- ----------------------------DROP TABLE IF EXISTS `user`;CREATE TABLE `user` (  `id` int(11) NOT NULL,  `user_id` varchar(255) DEFAULT NULL,  `name` varchar(255) DEFAULT NULL,  PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8;-- ------------------------------ Records of user-- ----------------------------/*Navicat MySQL Data TransferSource Server         : localhostSource Server Version : 50713Source Host           : localhost:3306Source Database       : db3Target Server Type    : MYSQLTarget Server Version : 50713File Encoding         : 65001Date: 2016-08-26 17:24:18*/SET FOREIGN_KEY_CHECKS=0;-- ------------------------------ Table structure for `user_detail`-- ----------------------------DROP TABLE IF EXISTS `user_detail`;CREATE TABLE `user_detail` (  `id` int(11) NOT NULL,  `user_id` varchar(255) DEFAULT NULL,  `detail` varchar(255) DEFAULT NULL,  PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8;-- ------------------------------ Records of user_detail-- ----------------------------/*Navicat MySQL Data TransferSource Server         : songSource Server Version : 50713Source Host           : 192.168.0.165:3306Source Database       : db1Target Server Type    : MYSQLTarget Server Version : 50713File Encoding         : 65001Date: 2016-08-26 17:24:27*/SET FOREIGN_KEY_CHECKS=0;-- ------------------------------ Table structure for `test2`-- ----------------------------DROP TABLE IF EXISTS `test2`;CREATE TABLE `test2` (  `id` int(11) NOT NULL,  `name` varchar(255) DEFAULT NULL,  PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8;-- ------------------------------ Records of test2-- ----------------------------

schema.xml文件：

<?xml version="1.0"?><!DOCTYPE mycat:schema SYSTEM "schema.dtd"><mycat:schema xmlns:mycat="http://org.opencloudb/">         <schema name="qs" checkSQLschema="false" sqlMaxLimit="100">                <!-- 垂直切分 -->                <table name="test1" primaryKey="id" type="global" dataNode="nodeTest1" />                <table name="test2" primaryKey="id" type="global" dataNode="nodeTest2" />                <!-- 全局表的配置如下(比如配置文件的数据，数据不大很少变动的，但是经常用到查询的) -->                <!-- <table name="t_area" primaryKey="id" type="global" dataNode="dn1,dn2" /> -->                <!-- 水平切分 -->                <!-- ER分片表:如user表和user_detail表的关联字段user_id；保证相同user_id的数据在同一块片区上 -->                <table name="user" primaryKey="user_id" dataNode="nodeUser01,nodeUser02" rule="mod-long">                    <childTable name="user_detail" primaryKey="id" joinKey="user_id" parentKey="user_id" />                </table>         </schema>         <dataNode name="nodeUser01" dataHost="dataHost01" database="db3" />         <dataNode name="nodeUser02" dataHost="dataHost02" database="db3" />         <dataNode name="nodeTest1" dataHost="dataHost01" database="db1" />         <dataNode name="nodeTest2" dataHost="dataHost02" database="db1" />        <dataHost name="dataHost01" maxCon="1000" minCon="10" balance="0"                writeType="0" dbType="mysql" dbDriver="native">                <heartbeat>select user()</heartbeat>                <writeHost host="hostM1" url="192.168.0.83:3306" user="root" password="root"/>        </dataHost>        <dataHost name="dataHost02" maxCon="1000" minCon="10" balance="0"                writeType="0" dbType="mysql" dbDriver="native">                <heartbeat>select user()</heartbeat>                <writeHost host="hostM1" url="192.168.0.165:3306" user="root" password="root"/>        </dataHost></mycat:schema>

注： rule=”mod-long” 分片规则是根据分片字段求模运算；
分片规则有：固定分片hash，范围约定，一致性hash，按日期范围等。
详见官网文档 http://www.mycat.org.cn/document/Mycat_V1.6.0.pdf

测试：
C:\Program Files\MySQL\MySQL Server 5.7\bin>mysql -uroot -proot -hlocalhost -P8066 -Dqs
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 7
Server version: 5.5.8-mycat-1.4-release-20151019230038 MyCat Server (OpenCloundDB)

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

mysql> show databases;
+———-+
| DATABASE |
+———-+
| qs |
+———-+
1 row in set (0.00 sec)

mysql> show tables;
+————–+
| Tables in qs |
+————–+
| test1 |
| test2 |
| user |
| user_detail |
+————–+
4 rows in set (0.00 sec)