1.mycat二进制包安装 前提：先安装jdk。 下载地址：http://dl.mycat.io/ tar -xvf Mycat-server-1.6.5-release-20180122220033-linux.tar.gz mv mycat /opt/ useradd mycat chown -R mycat:mycat mycat 2.mysql操作 创建数据库 CREATE DATABASE `scott` DEFAULT CHARACTER SET utf8 ; CREATE DATABASE `integration01` DEFAULT CHARACTER SET utf8 ; 其中，scott 不做分库，integration01做分库 创建物理表 use integration01; CREATE TABLE `user1` ( `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '主键', `borrow_nid` varchar(50) DEFAULT NULL COMMENT '借款单号', `create_user` varchar(30) DEFAULT 'admin' COMMENT '创建人', `create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间', `update_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间', PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='合同后签署数据记录表'; 以此类推，从 user1，user2，user3一直创建到user10。 3.修改配置文件 [root@testdb1 conf]# cat schema.xml <?xml version="1.0"?> <!DOCTYPE mycat:schema SYSTEM "schema.dtd"> <mycat:schema xmlns:mycat="http://io.mycat/"> <schema name="scott" checkSQLschema="false" sqlMaxLimit="100" dataNode="dnscott"/> <schema name="integration01" checkSQLschema="false" sqlMaxLimit="100" dataNode="dnintegration01"> <table name="user" primaryKey="id" autoIncrement="true" subTables="user$1-10" dataNode="dnintegration01" rule="mod-long"></table> </schema> <dataNode name="dnscott" dataHost="testdb1" database="scott"/> <dataNode name="dnintegration01" dataHost="testdb1" database="integration01"/> <dataHost name="testdb1" maxCon="1000" minCon="50" balance="0" writeType="1" dbType="mysql" dbDriver="native" switchType="0" slaveThreshold="100"> <heartbeat>select user()</heartbeat> <writeHost host="testdb3306" url="192.168.119.130:3306" user="root" password="chengce243"> </writeHost> </dataHost> </mycat:schema> [root@testdb1 conf]# cat 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="sequnceHandlerType">2</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="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">1</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>--> </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">chengce243</property> <property name="schemas">integration01</property> <!-- 表级 DML 权限设置 --> </user> <user name="user"> <property name="password">user</property> <property name="schemas">scott,integration01</property> <property name="readOnly">false</property> </user> </mycat:server> [root@testdb1 conf]# cat 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"> <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 --> </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">10</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.启动mycat cd /opt/mycat/bin ./mycat start & 查看mycat状态： ./mycat status Mycat-server is running (1656). 如果是running则是正常，若不是runing状态，则需要看log日志排查原因，一般都是配置文件配置错误导致。 5.查询分表 [root@testdb1 ~]# mysql -uuser -puser -h192.168.190.18 -P8066 integration01 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 1 Server version: 5.6.29-mycat-1.6.5-release-20180122220033 MyCat Server (OpenCloundDB) Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. 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. mysql> show tables; +-------------------------+ | Tables in integration01 | +-------------------------+ | user | +-------------------------+ 1 row in set (0.00 sec) insert into user (id,borrow_nid,create_user,create_time,update_time) values(10,'201802051008610','dba',now(),now()); insert into user (id,borrow_nid,create_user,create_time,update_time) values(11,'201802051008611','dba',now(),now()); insert into user (id,borrow_nid,create_user,create_time,update_time) values(12,'201802051008612','dba',now(),now()); insert into user (id,borrow_nid,create_user,create_time,update_time) values(13,'201802051008613','dba',now(),now()); insert into user (id,borrow_nid,create_user,create_time,update_time) values(14,'201802051008614','dba',now(),now()); insert into user (id,borrow_nid,create_user,create_time,update_time) values(15,'201802051008615','dba',now(),now()); insert into user (id,borrow_nid,create_user,create_time,update_time) values(16,'201802051008616','dba',now(),now()); insert into user (id,borrow_nid,create_user,create_time,update_time) values(17,'201802051008617','dba',now(),now()); insert into user (id,borrow_nid,create_user,create_time,update_time) values(18,'201802051008618','dba',now(),now()); insert into user (id,borrow_nid,create_user,create_time,update_time) values(19,'201802051008619','dba',now(),now()); insert into user (id,borrow_nid,create_user,create_time,update_time) values(20,'201802051008620','dba',now(),now()); insert into user (id,borrow_nid,create_user,create_time,update_time) values(21,'201802051008621','dba',now(),now()); insert into user (id,borrow_nid,create_user,create_time,update_time) values(22,'201802051008622','dba',now(),now()); insert into user (id,borrow_nid,create_user,create_time,update_time) values(23,'201802051008623','dba',now(),now()); mysql> explain select * from user; +-----------+--------------------------------+ | DATA_NODE | SQL | +-----------+--------------------------------+ | dn1 | SELECT * FROM user1 LIMIT 100 | | dn1 | SELECT * FROM user10 LIMIT 100 | | dn1 | SELECT * FROM user2 LIMIT 100 | | dn1 | SELECT * FROM user3 LIMIT 100 | | dn1 | SELECT * FROM user4 LIMIT 100 | | dn1 | SELECT * FROM user5 LIMIT 100 | | dn1 | SELECT * FROM user6 LIMIT 100 | | dn1 | SELECT * FROM user7 LIMIT 100 | | dn1 | SELECT * FROM user8 LIMIT 100 | | dn1 | SELECT * FROM user9 LIMIT 100 | +-----------+--------------------------------+