mycat 安装和简单应用
一、mycat 概述
mycat用于数据库的分库分表，本文以数据库mysql-8.0.31为例。mycat主要用“逻辑库、逻辑表”来管理各个物理节点主机的数据库和表。mycat需要配置“逻辑库、逻辑表（需要配置分库分表规则rule，核心内容）、逻辑节点、逻辑主机、登录mycat的用户名和密码”。schema.xml，主要配置了“逻辑库、逻辑表、逻辑节点、逻辑主机（关联逻辑节点和真实主机，以及真实主机登录mysql的用户名和密码）”。sever.xml，主要配置mycat登录的用户名和密码。rule.xml， 主要配置了分库分表的规则，注意在function中关联的文件。
二、mycat的安装和使用
mycat的安装和使用（mycat1.6.7.3）
== mycat 安装 ==
--、安装说明：
-- mycat 节点：
-- 我配置2个节点。需要2台主机，一台真机windows11， 一台虚拟机Linux_rockylinux8.5。
-- windows11: ip=10.10.10.12
-- 需要安装jdk： 我安装jdk11（mycat使用）;
-- mysql 版本： mysql-8.0.31-winx64.zip;
-- mycat 信息；
-- mycat 版本: Mycat-server-1.6.7.3-release-20190923113828-win.tar;
-- mycat 主机ip： 10.10.10.12
-- mycat 登录: mysql -h 10.10.10.12 -P 8066 -uadmin -p
-- linux_rockylinux: ip=10.10.10.15
-- 安装mysql： mysql-8.0.31
-- 需要开放端口： 3306
-- 需要关闭SElinux
-- mycat 前置条件：
-- 必须安装jdk（mycat使用）；
-- 可以用版本: jdk11、jdk8
-- mycat：
-- 安装目录： ../mycat_install;
-- 版本：Mycat-server-1.6.7.3-release-20190923113828-win.tar
-- mysql 版本： 8.0.31
-- jdk 版本：
-- jdk_download:
-- https://www.oracle.com/java/technologies/downloads/
-- https://www.oracle.com/java/technologies/downloads/#java8
-- jdk 版本： jdk-11.0.17_windows-x64_bin.zip（选用）; jdk-8u351-windows-x64.exe
-- jdk11_install = D:\tools\web\java\jdk\jdk11\bin\java
-- 下载连接：
-- mycat_download: http://www.mycat.org.cn/mycat1.html
-- mysql_download: https://dev.mysql.com/downloads/mysql/
-- mysql_connector_j_download： https://dev.mysql.com/downloads/connector/j/
-- 说明： 由于mycat 的jdbc版本比较旧，所以需要用新版本替换旧版本； mycat 安装跟目录为 ../mycat_install
-- select operating system: platform independent
-- version: mysql-connector-j-8.0.31.tar.gz; mysql-connector-j-8.0.31.zip
-- 替换位置： ../mycat_install/lib/mysql-connector-java-5.1.35.jar;
-- 删除： mysql-connector-java-5.1.35.jar
-- 改名： mysql-connector-j-8.0.31.jar ==> mysql-connector-java-8.0.31.jar;
-- 复制： mysql-connector-java-8.0.31.jar ==> ../mycat_install/lib/
-- mycat安装（解压式安装）
-- 解压文件：
-- Mycat-server-1.6.7.3-release-20190923113828-win.tar；
-- 安装目录为 mycat_install = D:\tools\web\db\mysql\plugins\mycat1673
-- 配置mycat的系统环境变量：
-- mycat_install=D:\tools\web\db\mysql\plugins\mycat1673
-- path=%mycat_install%\bin；
-- 配置文件wrapper.conf: ../mycat_install/conf/wrapper.conf
# wrapper.java.command=java
# wrapper.java.command=jdk_install\bin\java
# wrapper.java.command=C:\Program Files\Java\jdk1.8.0_351\bin\java
wrapper.java.command=D:\tools\web\java\jdk\jdk11\bin\java
== mycat 使用 ==
-- 一些说明：
-- 在mycat和数据库中， 英文大小写敏感；
-- mycat的用户名和密码： admin 123456
-- 配置文件: plugins\mycat\mycat1600\win\mycat_config_examples\mycat1673\conf\server.xml
<user name="admin">
<property name="password">123456</property>
<property name="schemas">MYCAT</property>
</user>
-- 表和数据
CREATE TABLE IF NOT EXISTS TBL_INFO(
`id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
`i_name` VARCHAR(20),
PRIMARY KEY(`id`)
)ENGINE=INNODB;
INSERT INTO TBL_INFO(id, i_name) VALUES(88, "laohu");
INSERT INTO TBL_INFO(id, i_name) VALUES(188, "tuzi");
-- mycat 配置
-- mycat配置内容： 逻辑库/逻辑表/逻辑节点/逻辑主机；
-- 位置： plugins\mycat\mycat1600\win\mycat_config_examples\mycat1673\conf\schema.xml
-- 逻辑库： 在mycat中，显示的虚拟库名；
-- 逻辑表： 在mycat中，显示的虚拟库中的虚拟表名；
-- 逻辑节点： 将“逻辑节点”和“逻辑主机”关联；
-- 逻辑主机： 将“逻辑主机”和“真实主机”关联； 并配置在“真实主机”登录mysql的用户名和密码；
-- mycat配置内容： mycat登录用户和密码；
-- 位置： plugins\mycat\mycat1600\win\mycat_config_examples\mycat1673\conf\server.xml
<user name="admin">
<property name="password">123456</property>
<property name="schemas">MYCAT</property>
</user>
-- mycat配置内容： 分库分表规则；
-- 分片规则，重点研究，认真研读
-- 位置： plugins\mycat\mycat1600\win\mycat_config_examples\mycat1673\conf\rule.xml
-- 关联关系：
-- (1)
(schema.xml)<table rule="auto-sharding-long" /> ==> rule.xml的
<tableRule name="auto-sharding-long">
<rule>
<columns>id</columns> ==> rule.xml的
<algorithm>rang-long</algorithm>
</rule>
</tableRule>
-- (2)
<function name="rang-long"
class="io.mycat.route.function.AutoPartitionByLong">
<property name="mapFile">autopartition-long.txt</property> ==> autopartition-long.txt
</function>
-- (3)
autopartition-long.txt 位置：
= plugins\mycat\mycat1600\win\mycat_config_examples\mycat1673\conf\autopartition-long.txt
-- mycat 服务：
-- 安装服务：
G:\tmpWorkspaces>mycat install
wrapper | Mycat-server installed.
-- 开启服务：
G:\tmpWorkspaces>mycat start
wrapper | Starting the Mycat-server service...
wrapper | Waiting to start...
wrapper | Mycat-server started.
-- 关闭服务：
G:\tmpWorkspaces>mycat stop
wrapper | Stopping the Mycat-server service...
wrapper | Mycat-server stopped.
-- 卸载服务：
G:\tmpWorkspaces>mycat remove
wrapper | Mycat-server removed.
-- 登录和退出 mycat：
-- 登录mycat： mysql -h mycat_install_host_ip -P 8066 -uadmin -p
G:\tmpWorkspaces>mysql -h 10.10.10.12 -P 8066 -uadmin -p
Enter password: ********
-- 退出mycat：
mysql> \q
Bye
-- mycat中操作数据库：
mysql>
mysql> show databases;
+----------+
| DATABASE |
+----------+
| MYCAT |
+----------+
1 row in set (0.01 sec)
mysql>
mysql> use MYCAT;
Database changed
mysql>
mysql> CREATE TABLE IF NOT EXISTS TBL_INFO(
-> `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
-> `i_name` VARCHAR(20),
-> PRIMARY KEY(`id`)
-> )ENGINE=INNODB;
Query OK, 0 rows affected (0.32 sec)
OK!
mysql>
mysql> INSERT INTO TBL_INFO(id, i_name) VALUES(88, "laohu");
Query OK, 1 row affected (0.34 sec)
OK!
mysql> INSERT INTO TBL_INFO(id, i_name) VALUES(188, "tuzi");
Query OK, 1 row affected (0.01 sec)
OK!
mysql> select * from TBL_INFO;
+------+--------+
| id | i_name |
+------+--------+
| 88 | laohu |
| 188 | tuzi |
+------+--------+
2 rows in set (0.11 sec)
-- mycat 完整操作流程：
-- mycat服务安装：
G:\tmpWorkspaces>mycat install
wrapper | Mycat-server installed.
-- mycat服务开启：
G:\tmpWorkspaces>mycat start
wrapper | Starting the Mycat-server service...
wrapper | Waiting to start...
wrapper | Mycat-server started.
-- mycat登录：
G:\tmpWorkspaces>mysql -h 10.10.10.12 -P 8066 -uadmin -p
Enter password: ********
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.29-mycat-1.6.7.3-release-20190923113828 MyCat Server (OpenCloudDB)
Copyright (c) 2000, 2022, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
-- mycat操作数据库：
mysql>
mysql> show databases;
+----------+
| DATABASE |
+----------+
| MYCAT |
+----------+
1 row in set (0.01 sec)
mysql>
mysql> use MYCAT;
Database changed
mysql>
mysql> CREATE TABLE IF NOT EXISTS TBL_INFO(
-> `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
-> `i_name` VARCHAR(20),
-> PRIMARY KEY(`id`)
-> )ENGINE=INNODB;
Query OK, 0 rows affected (0.32 sec)
OK!
mysql>
mysql> INSERT INTO TBL_INFO(id, i_name) VALUES(88, "laohu");
Query OK, 1 row affected (0.34 sec)
OK!
mysql> INSERT INTO TBL_INFO(id, i_name) VALUES(188, "tuzi");
Query OK, 1 row affected (0.01 sec)
OK!
mysql> select * from TBL_INFO;
+------+--------+
| id | i_name |
+------+--------+
| 88 | laohu |
| 188 | tuzi |
+------+--------+
2 rows in set (0.11 sec)
-- mycat退出：
mysql>
mysql> \q
Bye
-- mycat服务关闭：
G:\tmpWorkspaces>
G:\tmpWorkspaces>mycat stop
wrapper | Stopping the Mycat-server service...
wrapper | Mycat-server stopped.
-- mycat服务卸载：
G:\tmpWorkspaces>
G:\tmpWorkspaces>
G:\tmpWorkspaces>mycat remove
wrapper | Mycat-server removed.
G:\tmpWorkspaces>
G:\tmpWorkspaces>
三、主要配置文件：
1、配置文件： schema.xml
<?xml version="1.0"?>
<!DOCTYPE mycat:schema SYSTEM "schema.dtd">
<mycat:schema xmlns:mycat="http://io.mycat/">
<!-- 配置：逻辑库， 库名：MYCAT-->
<schema name="MYCAT" checkSQLschema="true" sqlMaxLimit="100">
<!-- 配置：逻辑表， 表名：TBL_INFO -->
<table name="TBL_INFO" dataNode="dn1,dn2" rule="auto-sharding-long" />
</schema>
<!-- 配置节点： 将‘逻辑节点’和‘逻辑主机’关联； database="真实节点的数据库" -->
<dataNode name="dn1" dataHost="dh1" database="MYCAT" />
<dataNode name="dn2" dataHost="dh2" database="MYCAT" />
<!-- 配置逻辑主机： 将“逻辑主机”和“实际主机”关联； “user，password”，在“真实主机”登录mysql时的用户名和密码； -->
<dataHost name="dh1" maxCon="1000" minCon="10" balance="0"
writeType="0" dbType="mysql" dbDriver="jdbc" switchType="1" slaveThreshold="100">
<heartbeat>select user()</heartbeat>
<writeHost host="master1" url="jdbc:mysql://10.10.10.12:3306" user="admin"
password="123456" />
<!-- <writeHost host="hostM2" url="localhost:3316" user="root" password="123456"/> -->
</dataHost>
<dataHost name="dh2" maxCon="1000" minCon="10" balance="0"
writeType="0" dbType="mysql" dbDriver="jdbc" switchType="1" slaveThreshold="100">
<heartbeat>select user()</heartbeat>
<writeHost host="slave1" url="jdbc:mysql://10.10.10.15:3306" user="admin"
password="123456" />
<!-- <writeHost host="hostM2" url="localhost:3316" user="root" password="123456"/> -->
</dataHost>
<!--
<dataHost name="sequoiadb1" maxCon="1000" minCon="1" balance="0" dbType="sequoiadb" dbDriver="jdbc">
<heartbeat> </heartbeat>
<writeHost host="hostM1" url="sequoiadb://1426587161.dbaas.sequoialab.net:11920/SAMPLE" user="jifeng" password="jifeng"></writeHost>
</dataHost>
<dataHost name="oracle1" maxCon="1000" minCon="1" balance="0" writeType="0" dbType="oracle" dbDriver="jdbc"> <heartbeat>select 1 from dual</heartbeat>
<connectionInitSql>alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss'</connectionInitSql>
<writeHost host="hostM1" url="jdbc:oracle:thin:@127.0.0.1:1521:nange" user="base" password="123456" > </writeHost> </dataHost>
<dataHost name="jdbchost" maxCon="1000" minCon="1" balance="0" writeType="0" dbType="mongodb" dbDriver="jdbc">
<heartbeat>select user()</heartbeat>
<writeHost host="hostM" url="mongodb://192.168.0.99/test" user="admin" password="123456" ></writeHost> </dataHost>
<dataHost name="sparksql" maxCon="1000" minCon="1" balance="0" dbType="spark" dbDriver="jdbc">
<heartbeat> </heartbeat>
<writeHost host="hostM1" url="jdbc:hive2://feng01:10000" user="jifeng" password="jifeng"></writeHost> </dataHost> -->
<!-- <dataHost name="jdbchost" maxCon="1000" minCon="10" balance="0" dbType="mysql"
dbDriver="jdbc"> <heartbeat>select user()</heartbeat> <writeHost host="hostM1"
url="jdbc:mysql://localhost:3306" user="root" password="123456"> </writeHost>
</dataHost> -->
</mycat:schema>
2、配置文件：server.xml
<?xml version="1.0" encoding="UTF-8"?>
<!-- - - Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License. - You
may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0
- - Unless required by applicable law or agreed to in writing, software -
distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the
License for the specific language governing permissions and - limitations
under the License. -->
<!DOCTYPE mycat:server SYSTEM "server.dtd">
<mycat:server xmlns:mycat="http://io.mycat/">
<system>
<property name="nonePasswordLogin">0</property> <!-- 0为需要密码登陆、1为不需要密码登陆 ,默认为0，设置为1则需要指定默认账户-->
<property name="useHandshakeV10">1</property>
<property name="useSqlStat">0</property> <!-- 1为开启实时统计、0为关闭 -->
<property name="useGlobleTableCheck">0</property> <!-- 1为开启全加班一致性检测、0为关闭 -->
<property name="sqlExecuteTimeout">300</property> <!-- SQL 执行超时 单位:秒-->
<property name="sequnceHandlerType">2</property>
<!--<property name="sequnceHandlerPattern">(?:(\s*next\s+value\s+for\s*MYCATSEQ_(\w+))(,|\)|\s)*)+</property>-->
<!--必须带有MYCATSEQ_或者 mycatseq_进入序列匹配流程 注意MYCATSEQ_有空格的情况-->
<property name="sequnceHandlerPattern">(?:(\s*next\s+value\s+for\s*MYCATSEQ_(\w+))(,|\)|\s)*)+</property>
<property name="subqueryRelationshipCheck">false</property> <!-- 子查询中存在关联查询的情况下,检查关联字段中是否有分片字段 .默认 false -->
<!-- <property name="useCompression">1</property>--> <!--1为开启mysql压缩协议-->
<!-- <property name="fakeMySQLVersion">5.6.20</property>--> <!--设置模拟的MySQL版本号-->
<!-- <property name="processorBufferChunk">40960</property> -->
<!--
<property name="processors">1</property>
<property name="processorExecutor">32</property>
-->
<!--默认为type 0: DirectByteBufferPool | type 1 ByteBufferArena | type 2 NettyBufferPool -->
<property name="processorBufferPoolType">0</property>
<!--默认是65535 64K 用于sql解析时最大文本长度 -->
<!--<property name="maxStringLiteralLength">65535</property>-->
<!--<property name="sequnceHandlerType">0</property>-->
<!--<property name="backSocketNoDelay">1</property>-->
<!--<property name="frontSocketNoDelay">1</property>-->
<!--<property name="processorExecutor">16</property>-->
<!--
<property name="serverPort">8066</property> <property name="managerPort">9066</property>
<property name="idleTimeout">300000</property> <property name="bindIp">0.0.0.0</property>
<property name="dataNodeIdleCheckPeriod">300000</property> 5 * 60 * 1000L; //连接空闲检查
<property name="frontWriteQueueSize">4096</property> <property name="processors">32</property> -->
<!--分布式事务开关，0为不过滤分布式事务，1为过滤分布式事务（如果分布式事务内只涉及全局表，则不过滤），2为不过滤分布式事务,但是记录分布式事务日志-->
<property name="handleDistributedTransactions">0</property>
<!--
off heap for merge/order/group/limit 1开启 0关闭
-->
<property name="useOffHeapForMerge">0</property>
<!--
单位为m
-->
<property name="memoryPageSize">64k</property>
<!--
单位为k
-->
<property name="spillsFileBufferSize">1k</property>
<property name="useStreamOutput">0</property>
<!--
单位为m
-->
<property name="systemReserveMemorySize">384m</property>
<!--是否采用zookeeper协调切换 -->
<property name="useZKSwitch">false</property>
<!-- XA Recovery Log日志路径 -->
<!--<property name="XARecoveryLogBaseDir">./</property>-->
<!-- XA Recovery Log日志名称 -->
<!--<property name="XARecoveryLogBaseName">tmlog</property>-->
<!--如果为 true的话 严格遵守隔离级别,不会在仅仅只有select语句的时候在事务中切换连接-->
<property name="strictTxIsolation">false</property>
<property name="useZKSwitch">true</property>
</system>
<!-- 全局SQL防火墙设置 -->
<!--白名单可以使用通配符%或着*-->
<!--例如<host host="127.0.0.*" user="root"/>-->
<!--例如<host host="127.0.*" user="root"/>-->
<!--例如<host host="127.*" user="root"/>-->
<!--例如<host host="1*7.*" user="root"/>-->
<!--这些配置情况下对于127.0.0.1都能以root账户登录-->
<!--
<firewall>
<whitehost>
<host host="1*7.0.0.*" user="root"/>
</whitehost>
<blacklist check="false">
</blacklist>
</firewall>
-->
<!--
<user name="root" defaultAccount="true">
<property name="password">123456</property>
<property name="schemas">TESTDB</property>
<privileges check="false">
<schema name="TESTDB" dml="0110" >
<table name="tb01" dml="0000"></table>
<table name="tb02" dml="1111"></table>
</schema>
</privileges>
</user>
<user name="user">
<property name="password">user</property>
<property name="schemas">TESTDB</property>
<property name="readOnly">true</property>
</user>
-->
<!-- 配置日期： 2022-10-27； david -->
<!-- 配置mycat账户; 用户名：admin 密码:123456 -->
<!-- 登录mycat: mysql -h 10.10.10.12(mycat安装的主机地址) -P 8066(mycat服务端口) -u admin -p211224ln -->
<user name="admin">
<property name="password">123456</property>
<property name="schemas">MYCAT</property>
</user>
</mycat:server>
3、配置文件: rule.xml
<?xml version="1.0" encoding="UTF-8"?>
<!-- - - Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License. - You
may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0
- - Unless required by applicable law or agreed to in writing, software -
distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the
License for the specific language governing permissions and - limitations
under the License. -->
<!DOCTYPE mycat:rule SYSTEM "rule.dtd">
<mycat:rule xmlns:mycat="http://io.mycat/">
<tableRule name="rule1">
<rule>
<columns>id</columns>
<algorithm>func1</algorithm>
</rule>
</tableRule>
<tableRule name="rule2">
<rule>
<columns>user_id</columns>
<algorithm>func1</algorithm>
</rule>
</tableRule>
<tableRule name="sharding-by-intfile">
<rule>
<columns>sharding_id</columns>
<algorithm>hash-int</algorithm>
</rule>
</tableRule>
<tableRule name="auto-sharding-long">
<rule>
<columns>id</columns>
<algorithm>rang-long</algorithm>
</rule>
</tableRule>
<tableRule name="mod-long">
<rule>
<columns>id</columns>
<algorithm>mod-long</algorithm>
</rule>
</tableRule>
<tableRule name="sharding-by-murmur">
<rule>
<columns>id</columns>
<algorithm>murmur</algorithm>
</rule>
</tableRule>
<tableRule name="crc32slot">
<rule>
<columns>id</columns>
<algorithm>crc32slot</algorithm>
</rule>
</tableRule>
<tableRule name="sharding-by-month">
<rule>
<columns>create_time</columns>
<algorithm>partbymonth</algorithm>
</rule>
</tableRule>
<tableRule name="latest-month-calldate">
<rule>
<columns>calldate</columns>
<algorithm>latestMonth</algorithm>
</rule>
</tableRule>
<tableRule name="auto-sharding-rang-mod">
<rule>
<columns>id</columns>
<algorithm>rang-mod</algorithm>
</rule>
</tableRule>
<tableRule name="jch">
<rule>
<columns>id</columns>
<algorithm>jump-consistent-hash</algorithm>
</rule>
</tableRule>
<function name="murmur"
class="io.mycat.route.function.PartitionByMurmurHash">
<property name="seed">0</property><!-- 默认是0 -->
<property name="count">2</property><!-- 要分片的数据库节点数量，必须指定，否则没法分片 -->
<property name="virtualBucketTimes">160</property><!-- 一个实际的数据库节点被映射为这么多虚拟节点，默认是160倍，也就是虚拟节点数是物理节点数的160倍 -->
<!-- <property name="weightMapFile">weightMapFile</property> 节点的权重，没有指定权重的节点默认是1。以properties文件的格式填写，以从0开始到count-1的整数值也就是节点索引为key，以节点权重值为值。所有权重值必须是正整数，否则以1代替 -->
<!-- <property name="bucketMapPath">/etc/mycat/bucketMapPath</property>
用于测试时观察各物理节点与虚拟节点的分布情况，如果指定了这个属性，会把虚拟节点的murmur hash值与物理节点的映射按行输出到这个文件，没有默认值，如果不指定，就不会输出任何东西 -->
</function>
<function name="crc32slot"
class="io.mycat.route.function.PartitionByCRC32PreSlot">
</function>
<function name="hash-int"
class="io.mycat.route.function.PartitionByFileMap">
<property name="mapFile">partition-hash-int.txt</property>
</function>
<function name="rang-long"
class="io.mycat.route.function.AutoPartitionByLong">
<property name="mapFile">autopartition-long.txt</property>
</function>
<function name="mod-long" class="io.mycat.route.function.PartitionByMod">
<!-- how many data nodes -->
<property name="count">3</property>
</function>
<function name="func1" class="io.mycat.route.function.PartitionByLong">
<property name="partitionCount">8</property>
<property name="partitionLength">128</property>
</function>
<function name="latestMonth"
class="io.mycat.route.function.LatestMonthPartion">
<property name="splitOneDay">24</property>
</function>
<function name="partbymonth"
class="io.mycat.route.function.PartitionByMonth">
<property name="dateFormat">yyyy-MM-dd</property>
<property name="sBeginDate">2015-01-01</property>
</function>
<function name="rang-mod" class="io.mycat.route.function.PartitionByRangeMod">
<property name="mapFile">partition-range-mod.txt</property>
</function>
<function name="jump-consistent-hash" class="io.mycat.route.function.PartitionByJumpConsistentHash">
<property name="totalBuckets">3</property>
</function>
</mycat:rule>
4、相关文件（autopartition-long.txt）： rule.xml (auto-sharding-long) -- > autopartition-long.txt
# range start-end ,data node index
# K=1000,M=10000.
# 0-500M=0
# 500M-1000M=1
# 1000M-1500M=2
1-100=0
101-200=1
四、图片实例
1、mycat服务的安装和开启、登录mycat
2、mycat操作数据库1：创建表
3、mycat 数据库操作2：插入数据和查询
4、mycat退出登录、关闭服务、卸载服务
本文由 lnlidawei 原创、整理、转载，本文来自于【博客园】； 整理和转载的文章的版权归属于【原创作者】； 转载或引用时请【保留文章的来源信息】：https://www.cnblogs.com/lnlidawei/p/16832688.html
