这篇文章主要介绍“MyCat分库分表实例教程”，在日常操作中，相信很多人在MyCat分库分表实例教程问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”MyCat分库分表实例教程”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！
项目环境：
192.168.8.30 mycat
192.168.8.31 node1
192.168.8.32 node2
192.168.8.33 node3
三个节点MySQL均为单实例
一、创建测试库
node1
create database testdb01;create database testdb02;create database testdb03;create database testdb04;create database testdb05;create database testdb06;create database testdb07;create database testdb08;create database testdb09;create database testdb10;create database testdb11;create database testdb12;node2
create database testdb13;create database testdb14;create database testdb15;create database testdb16;create database testdb17;create database testdb18;create database testdb19;create database testdb20;create database testdb21;create database testdb22;create database testdb23;create database testdb24;node3
create database testdb25;create database testdb26;create database testdb27;create database testdb28;create database testdb29;create database testdb30;create database testdb31;create database testdb32;create database testdb33;create database testdb34;create database testdb35;create database testdb36;二、配置schema.xml
<?xml version="1.0"?><!DOCTYPE mycat:schema SYSTEM "schema.dtd"><mycat:schema xmlns:mycat="http://io.mycat/"> <schema name="mycatdb" checkSQLschema="false" sqlMaxLimit="100"> <table name="user06" dataNode="dn$1-36" rule="sharding-by-month-adddate"></table> </schema><!-- <dataNode name="dn1$0-743" dataHost="localhost1" database="db$0-743"/> --> <dataNode name="dn1" dataHost="node1" database="testdb01" /> <dataNode name="dn2" dataHost="node1" database="testdb02" /> <dataNode name="dn3" dataHost="node1" database="testdb03" /> <dataNode name="dn4" dataHost="node1" database="testdb04" /> <dataNode name="dn5" dataHost="node1" database="testdb05" /> <dataNode name="dn6" dataHost="node1" database="testdb06" /> <dataNode name="dn7" dataHost="node1" database="testdb07" /> <dataNode name="dn8" dataHost="node1" database="testdb08" /> <dataNode name="dn9" dataHost="node1" database="testdb09" /> <dataNode name="dn10" dataHost="node1" database="testdb10" /> <dataNode name="dn11" dataHost="node1" database="testdb11" /> <dataNode name="dn12" dataHost="node1" database="testdb12" /> <dataNode name="dn13" dataHost="node2" database="testdb13" /> <dataNode name="dn14" dataHost="node2" database="testdb14" /> <dataNode name="dn15" dataHost="node2" database="testdb15" /> <dataNode name="dn16" dataHost="node2" database="testdb16" /> <dataNode name="dn17" dataHost="node2" database="testdb17" /> <dataNode name="dn18" dataHost="node2" database="testdb18" /> <dataNode name="dn19" dataHost="node2" database="testdb19" /> <dataNode name="dn20" dataHost="node2" database="testdb20" /> <dataNode name="dn21" dataHost="node2" database="testdb21" /> <dataNode name="dn22" dataHost="node2" database="testdb22" /> <dataNode name="dn23" dataHost="node2" database="testdb23" /> <dataNode name="dn24" dataHost="node2" database="testdb24" /> <dataNode name="dn25" dataHost="node3" database="testdb25" /> <dataNode name="dn26" dataHost="node3" database="testdb26" /> <dataNode name="dn27" dataHost="node3" database="testdb27" /> <dataNode name="dn28" dataHost="node3" database="testdb28" /> <dataNode name="dn29" dataHost="node3" database="testdb29" /> <dataNode name="dn30" dataHost="node3" database="testdb30" /> <dataNode name="dn31" dataHost="node3" database="testdb31" /> <dataNode name="dn32" dataHost="node3" database="testdb32" /> <dataNode name="dn33" dataHost="node3" database="testdb33" /> <dataNode name="dn34" dataHost="node3" database="testdb34" /> <dataNode name="dn35" dataHost="node3" database="testdb35" /> <dataNode name="dn36" dataHost="node3" database="testdb36" /> <!--<dataNode name="dn4" dataHost="sequoiadb1" database="SAMPLE" /> <dataNode name="jdbc_dn1" dataHost="jdbchost" database="db1" /><dataNodename="jdbc_dn2" dataHost="jdbchost" database="db2" /><dataNode name="jdbc_dn3" dataHost="jdbchost" database="db3" /> --><dataHost name="node1" maxCon="1000" minCon="10" balance="1" writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100"> <heartbeat>select user()</heartbeat> <!-- can have multi write hosts --> <writeHost host="192.168.8.31" url="192.168.8.31:3306" user="root" password="mysql"></writeHost> </dataHost> <dataHost name="node2" maxCon="1000" minCon="10" balance="1" writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100"> <heartbeat>select user()</heartbeat> <!-- can have multi write hosts --> <writeHost host="192.168.8.32" url="192.168.8.32:3306" user="root" password="mysql"></writeHost> </dataHost> <dataHost name="node3" maxCon="1000" minCon="10" balance="1" writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100"> <heartbeat>select user()</heartbeat> <!-- can have multi write hosts --> <writeHost host="192.168.8.33" url="192.168.8.33:3306" user="root" password="mysql"></writeHost> </dataHost></mycat:schema>三、配置rule.xml
<tableRule name="sharding-by-month-adddate"> <rule> <columns>adddate</columns> <algorithm>partbymonth</algorithm> </rule></tableRule><function name="partbymonth" class="io.mycat.route.function.PartitionByMonth"> <property name="dateFormat">yyyy-MM-dd</property> <!-- 日期格式--> <property name="sBeginDate">2016-01-01</property> <!-- 开始日期--></function>四、启动mycat
/usr/local/mycat/bin/mycat start查看mycat日志
STATUS | wrapper | 2018/11/22 19:52:42 | --> Wrapper Started as DaemonSTATUS | wrapper | 2018/11/22 19:52:42 | Launching a JVM...INFO | jvm 1 | 2018/11/22 19:52:42 | OpenJDK 64-Bit Server VM warning: ignoring option MaxPermSize=64M; support was removed in 8.0INFO | jvm 1 | 2018/11/22 19:52:44 | Wrapper (Version 3.2.3) http://wrapper.tanukisoftware.orgINFO | jvm 1 | 2018/11/22 19:52:44 | Copyright 1999-2006 Tanuki Software, Inc. All Rights Reserved.INFO | jvm 1 | 2018/11/22 19:52:44 | INFO | jvm 1 | 2018/11/22 19:52:49 | MyCAT Server startup successfully. see logs in logs/mycat.log五、登录MySQL查看逻辑表
mysql -uroot -pmysql -P8066 -h292.168.8.30mysql> show databases;+----------+| DATABASE |+----------+| mycatdb |+----------+1 row in set (0.03 sec)mysql> use mycatdb;Reading table information for completion of table and column namesYou can turn off this feature to get a quicker startup with -ADatabase changedmysql> show tables;+-------------------+| Tables in mycatdb |+-------------------+| user04 || user05 || user06 |+-------------------+3 rows in set (0.01 sec)mysql> select * from user06;ERROR 1105 (HY000): Table 'testdb36.user06' doesn't existmysql> drop table if exists user06;Query OK, 0 rows affected, 1 warning (0.38 sec)mysql> create table user06( -> id int not null auto_increment, -> name varchar(64), -> adddate datetime, -> primary key(id) -> );Query OK, 0 rows affected (1.73 sec)六、插入测试数据
insert into user06(id,name,adddate) values(1,'steven','2016-05-09 12:32:12');insert into user06(id,name,adddate) values(2,'steven','2016-09-09 12:32:12');insert into user06(id,name,adddate) values(3,'steven','2016-12-09 12:32:12');insert into user06(id,name,adddate) values(4,'steven','2017-05-09 12:32:12');insert into user06(id,name,adddate) values(5,'steven','2017-06-09 12:32:12');insert into user06(id,name,adddate) values(6,'steven','2017-07-09 12:32:12');insert into user06(id,name,adddate) values(7,'steven','2018-05-09 12:32:12');insert into user06(id,name,adddate) values(8,'steven','2018-05-09 12:32:12');insert into user06(id,name,adddate) values(9,'steven','2018-08-09 12:32:12');insert into user06(id,name,adddate) values(10,'steven','2018-12-09 12:32:12');七、验证数据
node1
mysql> select * from testdb01.user06;Empty set (0.00 sec)mysql> select * from testdb02.user06;Empty set (0.00 sec)mysql> select * from testdb03.user06;Empty set (0.00 sec)mysql> select * from testdb04.user06;Empty set (0.01 sec)mysql> select * from testdb05.user06;+----+--------+---------------------+| id | name | adddate |+----+--------+---------------------+| 1 | steven | 2016-05-09 12:32:12 |+----+--------+---------------------+1 row in set (0.00 sec)mysql> select * from testdb06.user06;Empty set (0.01 sec)mysql> select * from testdb07.user06;Empty set (0.01 sec)mysql> select * from testdb08.user06;Empty set (0.01 sec)mysql> select * from testdb09.user06;+----+--------+---------------------+| id | name | adddate |+----+--------+---------------------+| 2 | steven | 2016-09-09 12:32:12 |+----+--------+---------------------+1 row in set (0.00 sec)mysql> select * from testdb10.user06;Empty set (0.00 sec)mysql> select * from testdb11.user06;Empty set (0.00 sec)mysql> select * from testdb12.user06;+----+--------+---------------------+| id | name | adddate |+----+--------+---------------------+| 3 | steven | 2016-12-09 12:32:12 |+----+--------+---------------------+1 row in set (0.00 sec)node2
mysql> select * from testdb13.user06;Empty set (0.00 sec)mysql> select * from testdb14.user06;Empty set (0.00 sec)mysql> select * from testdb15.user06;Empty set (0.00 sec)mysql> select * from testdb16.user06;Empty set (0.00 sec)mysql> select * from testdb17.user06;+----+--------+---------------------+| id | name | adddate |+----+--------+---------------------+| 4 | steven | 2017-05-09 12:32:12 |+----+--------+---------------------+1 row in set (0.00 sec)mysql> select * from testdb18.user06;+----+--------+---------------------+| id | name | adddate |+----+--------+---------------------+| 5 | steven | 2017-06-09 12:32:12 |+----+--------+---------------------+1 row in set (0.01 sec)mysql> select * from testdb19.user06;+----+--------+---------------------+| id | name | adddate |+----+--------+---------------------+| 6 | steven | 2017-07-09 12:32:12 |+----+--------+---------------------+1 row in set (0.00 sec)mysql> select * from testdb20.user06;Empty set (0.01 sec)mysql> select * from testdb21.user06;Empty set (0.00 sec)mysql> select * from testdb22.user06;Empty set (0.00 sec)mysql> select * from testdb23.user06;Empty set (0.00 sec)mysql> select * from testdb24.user06;Empty set (0.01 sec)node3
mysql> select * from testdb25.user06;Empty set (0.00 sec)mysql> select * from testdb26.user06;Empty set (0.00 sec)mysql> select * from testdb27.user06;Empty set (0.00 sec)mysql> select * from testdb28.user06;Empty set (0.01 sec)mysql> select * from testdb29.user06;+----+--------+---------------------+| id | name | adddate |+----+--------+---------------------+| 7 | steven | 2018-05-09 12:32:12 || 8 | steven | 2018-05-09 12:32:12 |+----+--------+---------------------+2 rows in set (0.00 sec)mysql> select * from testdb30.user06;Empty set (0.01 sec)mysql> select * from testdb31.user06;Empty set (0.01 sec)mysql> select * from testdb32.user06;+----+--------+---------------------+| id | name | adddate |+----+--------+---------------------+| 9 | steven | 2018-08-09 12:32:12 |+----+--------+---------------------+1 row in set (0.00 sec)mysql> select * from testdb33.user06;Empty set (0.00 sec)mysql> select * from testdb34.user06;Empty set (0.01 sec)mysql> select * from testdb35.user06;Empty set (0.01 sec)mysql> select * from testdb36.user06;+----+--------+---------------------+| id | name | adddate |+----+--------+---------------------+| 10 | steven | 2018-12-09 12:32:12 |+----+--------+---------------------+1 row in set (0.00 sec)到此，关于“MyCat分库分表实例教程”的学习就结束了，希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习，快去试试吧！若想继续学习更多相关知识，请继续关注编程网网站，小编会继续努力为大家带来更多实用的文章！
