昨天把mycat的環(huán)境搭建差不多了放棒，今天直接上配置文件：
主要需要修改三個配置文件：
rule.xml
schema.xml
server.xml
rule.xml配置如圖:
<?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><!-- 默認是0 -->
<property name="count">2</property><!-- 要分片的數據庫節(jié)點數量虐沥，必須指定，否則沒法分片 -->
<property name="virtualBucketTimes">160</property><!-- 一個實際的數據庫節(jié)點被映射為這么多虛擬節(jié)點浩淘，默認是160倍贩耐，也就是虛擬節(jié)點數是物理節(jié)點數的160倍 -->
<!-- <property name="weightMapFile">weightMapFile</property> 節(jié)點的權重，沒有指定權重的節(jié)點默認是1本辐。以properties文件的格式填寫，以從0開始到count-1的整數值也就是節(jié)點索引為key蘸拔，以節(jié)點權重值為值师郑。所有權重值必須是正整數，否則以1代替 -->
<!-- <property name="bucketMapPath">/etc/mycat/bucketMapPath</property>
用于測試時觀察各物理節(jié)點與虛擬節(jié)點的分布情況调窍，如果指定了這個屬性宝冕，會把虛擬節(jié)點的murmur hash值與物理節(jié)點的映射按行輸出到這個文件，沒有默認值邓萨，如果不指定地梨，就不會輸出任何東西 -->
</function>
<function name="crc32slot"
? class="io.mycat.route.function.PartitionByCRC32PreSlot">
<property name="count">2</property><!-- 要分片的數據庫節(jié)點數量，必須指定缔恳，否則沒法分片 -->
</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">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>
其中最重要的兩段：列舉使用id分片宝剖，分多少片：
schema.xml：數據庫關系配置，分庫分表配置
<?xml version="1.0"?>
<!DOCTYPE mycat:schema SYSTEM "schema.dtd">
<mycat:schema xmlns:mycat="http://io.mycat/">
<schema name="cuijiale" checkSQLschema="false" sqlMaxLimit="100">
<!-- auto sharding by id (long) -->
<table name="tb_user" dataNode="dn1,dn2" rule="sharding-by-murmur">
</table>
<!-- <table name="oc_call" primaryKey="ID" dataNode="dn1$0-743" rule="latest-month-calldate"
/> -->
</schema>
<!-- <dataNode name="dn1$0-743" dataHost="localhost1" database="db$0-743"
/> -->
<dataNode name="dn1" dataHost="192.168.30.134" database="cuijiale" />
<dataNode name="dn2" dataHost="192.168.30.135" database="cuijiale" />
<!-- <dataNode name="dn3" dataHost="localhost1" database="db3" /> -->
<!--<dataNode name="dn4" dataHost="sequoiadb1" database="SAMPLE" />
<dataNode name="jdbc_dn1" dataHost="jdbchost" database="db1" />
<dataNode name="jdbc_dn2" dataHost="jdbchost" database="db2" />
<dataNode name="jdbc_dn3" dataHost="jdbchost" database="db3" /> -->
<dataHost name="192.168.30.134" maxCon="1000" minCon="10" balance="0"
? writeType="0" dbType="mysql" dbDriver="native" switchType="1"? slaveThreshold="100">
<heartbeat>select user()</heartbeat>
<!-- can have multi write hosts -->
<writeHost host="192.168.30.134" url="192.168.30.134:3306" user="cuijiale" password="2153577">?
? ? ? ? </writeHost>
<!-- <writeHost host="hostM2" url="localhost:3316" user="root" password="123456"/> -->
</dataHost>
<dataHost name="192.168.30.135" maxCon="1000" minCon="10" balance="0"
? writeType="0" dbType="mysql" dbDriver="native" switchType="1"? slaveThreshold="100">
<heartbeat>select user()</heartbeat>
<!-- can have multi write hosts -->
<writeHost host="192.168.30.135" url="192.168.30.135:3306" user="cuijiale" password="2153577">?
? ? ? ? </writeHost>
<!-- <writeHost host="hostM2" url="localhost:3316" user="root" password="123456"/> -->
</dataHost>
</mycat:schema>
我這里準備了兩臺寫庫虛擬機歉甚，只為驗證分庫分表是否成功與否万细；
server.xml:配置用戶信息
<?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="useSqlStat">0</property>? <!-- 1為開啟實時統(tǒng)計、0為關閉 -->
<property name="useGlobleTableCheck">0</property>? <!-- 1為開啟全加班一致性檢測纸泄、0為關閉 -->
<property name="sequnceHandlerType">2</property>
? ? ? <!--? <property name="useCompression">1</property>--> <!--1為開啟mysql壓縮協(xié)議-->
? ? ? ? <!--? <property name="fakeMySQLVersion">5.6.20</property>--> <!--設置模擬的MySQL版本號-->
<!-- <property name="processorBufferChunk">40960</property> -->
<!--
<property name="processors">1</property>
<property name="processorExecutor">32</property>
-->
<!--默認為type 0: DirectByteBufferPool | type 1 ByteBufferArena-->
<property name="processorBufferPoolType">0</property>
<!--默認是65535 64K 用于sql解析時最大文本長度 -->
<!--<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> -->
<!--分布式事務開關赖钞，0為不過濾分布式事務腰素，1為過濾分布式事務（如果分布式事務內只涉及全局表，則不過濾）雪营，2為不過濾分布式事務,但是記錄分布式事務日志-->
<property name="handleDistributedTransactions">0</property>
<!--
off heap for merge/order/group/limit? ? ? 1開啟? 0關閉
-->
<property name="useOffHeapForMerge">1</property>
<!--
單位為m
-->
<property name="memoryPageSize">1m</property>
<!--
單位為k
-->
<property name="spillsFileBufferSize">1k</property>
<property name="useStreamOutput">0</property>
<!--
單位為m
-->
<property name="systemReserveMemorySize">384m</property>
<!--是否采用zookeeper協(xié)調切換? -->
<property name="useZKSwitch">true</property>
</system>
<!-- 全局SQL防火墻設置 -->
<!--
<firewall>
? <whitehost>
? ? ? <host host="127.0.0.1" user="mycat"/>
? ? ? <host host="127.0.0.2" user="mycat"/>
? </whitehost>
? ? ? <blacklist check="false">
? ? ? </blacklist>
</firewall>
-->
<user name="cuijiale">
<property name="password">2153577</property>
<property name="schemas">cuijiale</property>
<!-- 表級 DML 權限設置 -->
<!--
<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> -->
</mycat:server>
替換mycat服務配置文件后弓千，啟動服務：
在mycat安裝目錄bin文件夾下輸入如下命令：
有時linux虛擬機訪問mysql會失敗，一般情況會有防火墻献起，關掉防火墻在訪問即可洋访；
全部啟動好后，兩個庫分別新建表tb_user:
CREATE TABLE `tb_user` ( `id` int(10) NOT NULL , `name` varchar(255) NULL , `sex` varchar(255) NULL , PRIMARY KEY (`id`) );
我是靠id分片的谴餐，這里要注意下：
全部搞定后姻政，可以insert幾條數據驗證下：
經驗證，mycat服務查詢結果來自兩臺不同mysql服務器总寒，至此分庫分表切片都已成功扶歪！
