mycat小测试
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#测试环境:
# 有3张表 users,item,item_detail (item 的子表) 和 3 个数据库 db01,db02,db03
# 表 users 存储在数据库 db01, 表 item 和 item_detail 分布存储在数据 db01 和 db02
# 现在在3个数据库都创建相同的表
- create database db01;
- create database db02;
- create database db03;
- CREATE TABLE users (
- id INT NOT NULL AUTO_INCREMENT,
- name varchar(50) NOT NULL default '',
- indate DATETIME NOT NULL default '0000-00-00 00:00:00',
- PRIMARY KEY (id)
- )AUTO_INCREMENT= 1 ENGINE=InnoDB DEFAULT CHARSET=utf8;
- CREATE TABLE item (
- id INT NOT NULL AUTO_INCREMENT,
- value INT NOT NULL default 0,
- indate DATETIME NOT NULL default '0000-00-00 00:00:00',
- PRIMARY KEY (id)
- )AUTO_INCREMENT= 1 ENGINE=InnoDB DEFAULT CHARSET=utf8;
- CREATE TABLE item_detail (
- id INT NOT NULL AUTO_INCREMENT,
- value INT NOT NULL default 0,
- name varchar(50) NOT NULL default '',
- item_id INT NOT NULL,
- PRIMARY KEY (id),
- key (item_id)
- )AUTO_INCREMENT= 1 ENGINE=InnoDB DEFAULT CHARSET=utf8;
# 设置 wrapper.java.command 的java 路径
( 同时可设置 -Xmx 和 -Xms ,参考: mycat 启动失败 The specified size exceeds the maximum representable size)
- vi /usr/local/mycat/conf/wrapper.conf
- wrapper.java.command=%JAVA_HOME%/bin/java
#配置 server.xml 和 schema.xml (本案例配置信息在文章底部)
- vi /usr/local/mycat/conf/server.xml
- vi /usr/local/mycat/conf/schema.xml
#启动mycat服务 ./mycat { console | start | stop | restart | status | dump }
- /usr/local/mycat/bin/mycat console
测试:
#访问 mycat (凭据参考 /usr/local/mycat/conf/server.xml)只能控制台上访问,我用workbench不支持router
- mysql -utest -ptest -h127.0.0.1 -P8066 -DTESTDB
- mysql> show databases;
- +----------+
- | DATABASE |
- +----------+
- | TESTDB |
- +----------+
- mysql> show tables;
- +------------------+
- | Tables in TESTDB |
- +------------------+
- | item |
- | item_detail |
- | users |
- +------------------+
#在 mycat 中插入数据并查询:
- insert into users(name,indate) values('kk',now());
- insert into item(id,value,indate) values(1,100,now());
- insert into item_detail(name,value,item_id) values('pad',40,1);
- insert into item_detail(name,value,item_id) values('phone',50,1);
- insert into item(id,value,indate) values(100,100,now());
- insert into item_detail(name,value,item_id) values('pad',40,100);
- insert into item_detail(name,value,item_id) values('phone',50,100);
- mysql> select * from users;
- +----+------+---------------------+
- | id | name | indate |
- +----+------+---------------------+
- | 1 | kk | 2016-04-13 06:28:00 |
- +----+------+---------------------+
- mysql> select * from item;
- +-----+-------+---------------------+
- | id | value | indate |
- +-----+-------+---------------------+
- | 100| 100 | 2016-04-13 06:34:12 |
- | 1 | 100 | 2016-04-13 06:32:58 |
- +-----+-------+---------------------+
- mysql> select * from item_detail;
- +----+-------+------+---------+
- | id | value | name | item_id |
- +----+-------+------+---------+
- | 1 | 0 | 40 | 100|
- | 2 | 0 | 50 | 100|
- | 1 | 0 | 40 | 1 |
- | 2 | 0 | 50 | 1 |
- +----+-------+------+---------+
#打开另一个终端,使用mysql账号登陆访问查看表情况
- mysql -uroot -ptest -p
#具体的表数据存储情况:
- -----------------------------------------
- mysql> select * from db01.users;
- +----+------+---------------------+
- | id | name | indate |
- +----+------+---------------------+
- | 1 | kk | 2016-04-13 06:28:00 |
- +----+------+---------------------+
- mysql> select * from db02.users;
- mysql> select * from db03.users;
- -----------------------------------------
- mysql> select * from db01.item;
- mysql> select * from db02.item;
- +-----+-------+---------------------+
- | id | value | indate |
- +-----+-------+---------------------+
- | 100| 100 | 2016-04-13 06:34:12 |
- +-----+-------+---------------------+
- mysql> select * from db03.item;
- +----+-------+---------------------+
- | id | value | indate |
- +----+-------+---------------------+
- | 1 | 100 | 2016-04-13 06:32:58 |
- +----+-------+---------------------+
- -----------------------------------------
- mysql> select * from db01.item_detail;
- mysql> select * from db02.item_detail;
- +----+-------+------+---------+
- | id | value | name | item_id |
- +----+-------+------+---------+
- | 1 | 0 | 40 | 100|
- | 2 | 0 | 50 | 100|
- +----+-------+------+---------+
- mysql> select * from db03.item_detail;
- +----+-------+------+---------+
- | id | value | name | item_id |
- +----+-------+------+---------+
- | 1 | 0 | 40 | 1 |
- | 2 | 0 | 50 | 1 |
- +----+-------+------+---------+
------------------------------------------------------------------------------------
------------------------------------------------------------------------------------
# server.xml 和 schema.xml 配置情况
- # vi /usr/local/mycat/conf/server.xml
- <?xml version="1.0" encoding="UTF-8"?>
- <!DOCTYPE mycat:server SYSTEM "server.dtd">
- <mycat:server xmlns:mycat="http://org.opencloudb/">
- <system>
- <!--
- <property name="processors">32</property>
- <property name="processorExecutor">32</property>
- <property name="bindIp">0.0.0.0</property>
- <property name="frontWriteQueueSize">4096</property>
- <property name="idleTimeout">300000</property>
- <property name="mutiNodePatchSize">100</property>
- -->
- <property name="defaultSqlParser">druidparser</property>
- <property name="mutiNodeLimitType">1</property>
- <property name="serverPort">8066</property>
- <property name="managerPort">9066</property>
- </system>
- <!-- 任意设置登陆 mycat 的用户名,密码,数据库 -->
- <user name="test">
- <property name="password">test</property>
- <property name="schemas">TESTDB</property>
- </user>
- <user name="user">
- <property name="password">user</property>
- <property name="schemas">TESTDB</property>
- <property name="readOnly">true</property>
- </user>
- <!--
- <quarantine>
- <whitehost>
- <host host="127.0.0.1" user="mycat"/>
- <host host="127.0.0.2" user="mycat"/>
- </whitehost>
- <blacklist check="false"></blacklist>
- </quarantine>
- -->
- </mycat:server>
- # vi /usr/local/mycat/conf/schema.xml
- <?xml version="1.0"?>
- <!DOCTYPE mycat:schema SYSTEM "schema.dtd">
- <mycat:schema xmlns:mycat="http://org.opencloudb/">
- <!-- 设置表的存储方式.schema name="TESTDB" 与 server.xml中的 TESTDB 设置一致 -->
- <schema name="TESTDB" checkSQLschema="false" sqlMaxLimit="100">
- <table name="users" primaryKey="id" type="global" dataNode="node_db01" />
- <table name="item" primaryKey="id" dataNode="node_db02,node_db03" rule="mod-long">
- <childTable name="item_detail" primaryKey="id" joinKey="item_id" parentKey="id" />
- </table>
- </schema>
- <!-- 设置dataNode 对应的数据库,及 mycat 连接的地址dataHost -->
- <dataNode name="node_db01" dataHost="dataHost01" database="db01" />
- <dataNode name="node_db02" dataHost="dataHost01" database="db02" />
- <dataNode name="node_db03" dataHost="dataHost01" database="db03" />
- <!-- mycat 逻辑主机dataHost对应的物理主机.其中也设置对应的mysql登陆信息 -->
- <dataHost name="dataHost01" maxCon="1000" minCon="10" balance="0" writeType="0" dbType="mysql" dbDriver="native">
- <heartbeat>select user()</heartbeat>
- <writeHost host="server1" url="127.0.0.1:3306" user="root" password="root"/>
- </dataHost>
- </mycat:schema>
rule.xml中修改
<function name="mod-long" class="io.mycat.route.function.PartitionByMod">
<!-- how many data nodes -->
<property name="count">2</property> --原本为3
</function>
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