MyCAT分库分表+读写分离(基于主从配置)安装配置详解

实现功能:

所有的DML操作都写主库,所有的读操作都读从库,一张表被逻辑分到两套主从库里面,每套主从只有整个数据的一部分

已创建两个用户,一个用于DML,一个用于只读

环境:

[root@node80 ~]# uname -a
Linux node80 2.6.32-696.el6.x86_64 #1 SMP Tue Mar 21 19:29:05 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
[root@node80 ~]# cat /etc/redhat-release 
CentOS release 6.9 (Final)

[root@node80 mycat-1.6]# cat version.txt 
BuildTime  2016-10-28 12:47:06
GitVersion   460930bb32b0007597796369bc92daa8428d8787
MavenVersion 1.6-RELEASE
GitUrl https://github.com/MyCATApache/Mycat-Server.git
MyCatSite http://www.mycat.org.cn
QQGroup 106088787


核心配置文件:

vim schema.xml

<?xml version="1.0"?>

<!DOCTYPE mycat:schema SYSTEM "schema.dtd">

<mycat:schema xmlns:mycat="http://io.mycat/">


<schema name="abc" checkSQLschema="false" sqlMaxLimit="10000" >

<!-- auto sharding by id (long) -->

<table name="abc" primaryKey="id" dataNode="dn83,dn87" rule="mod-long" />

</schema>

<dataNode name="dn83" dataHost="node83" database="hexin" />

<dataNode name="dn87" dataHost="node87" database="hexin" />

<dataHost name="node83" maxCon="1000" minCon="10" balance="3"

writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold='100' >

<heartbeat>show user()</heartbeat>

<!-- can have multi write hosts -->

<writeHost host="192.168.66.83" url="192.168.66.83:3306" user="master"

password="123456">

<!-- can have multi read hosts -->

<readHost host="192.168.66.83" url="192.168.66.83:3307" user="slave" password="123456" />

</writeHost>

<!-- <writeHost host="hostM2" url="localhost:3316" user="root" password="123456"/> -->

</dataHost>


<dataHost name="node87" maxCon="1000" minCon="10" balance="3"

writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold='100' >

<heartbeat>show user()</heartbeat>

<!-- can have multi write hosts -->

<writeHost host="192.168.66.87" url="192.168.66.87:3306" user="master"

password="123456">

<!-- can have multi read hosts -->

<readHost host="192.168.66.87" url="192.168.66.87:3307" user="slave" password="123456" />

</writeHost>

<!-- <writeHost host="hostM2" url="localhost:3316" user="root" password="123456"/> -->

</dataHost>

</mycat:schema>


vim 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="order_id">

<rule>

<columns>order_id</columns>

<algorithm>mod-long</algorithm>

</rule>

</tableRule>

<tableRule name="fba_id">

<rule>

<columns>fba_id</columns>

<algorithm>mod-long</algorithm>

</rule>

</tableRule>


<tableRule name="meeting_id">

<rule>

<columns>meeting_id</columns>

<algorithm>mod-long</algorithm>

</rule>

</tableRule>


<tableRule name="parent_type_id">

<rule>

<columns>parent_type_id</columns>

<algorithm>mod-long</algorithm>

</rule>

</tableRule>

<tableRule name="store_id">

<rule>

<columns>store_id</columns>

<algorithm>mod-long</algorithm>

</rule>

</tableRule>





<tableRule name="role_id">

<rule>

<columns>role_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">2</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>



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>-->

<!--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="192.168.66.*" user="root"/>

</whitehost>

<blacklist check="false">

</blacklist>

</firewall>


<user name="root" defaultAccount="true">

<property name="password">123456</property>

<property name="schemas">abc</property>

<property name="readOnly">false</property>

<!-- 表级 DML 权限设置 -->

<!--

<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="slave">

<property name="password">123456</property>

<property name="schemas">abc</property>

<property name="readOnly">true</property>

</user>


</mycat:server>



vim log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>

<Configuration status="WARN">

<Appenders>

<Console name="Console" target="SYSTEM_OUT">

<PatternLayout pattern="%d [%-5p][%t] %m %throwable{full} (%C:%F:%L) %n"/>

</Console>


<RollingFile name="RollingFile" fileName="${sys:MYCAT_HOME}/logs/mycat.log"

filePattern="${sys:MYCAT_HOME}/logs/$${date:yyyy-MM}/mycat-%d{MM-dd}-%i.log.gz">

<PatternLayout>

<Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %5p [%t] (%l) - %m%n</Pattern>

</PatternLayout>

<Policies>

<OnStartupTriggeringPolicy/>

<SizeBasedTriggeringPolicy size="250 MB"/>

<TimeBasedTriggeringPolicy/>

</Policies>

</RollingFile>

</Appenders>


<appender name="FILE2" class="org.apache.log4j.RollingFileAppender">

<param name="file" value="${sys:MYCAT_HOME}/logs/sqlexecutebug.log" />

<param name="Append" value="false"/>

<param name="MaxFileSize" value="1000KB"/>

<param name="MaxBackupIndex" value="10"/>

<param name="encoding" value="UTF-8" />

<layout class="org.apache.log4j.PatternLayout">

<param name="ConversionPattern" value="%d{MM/dd HH:mm:ss.SSS} %5p [%t] (%F:%L) -%m%n" />

</layout>

</appender>


<logger name="org.opencloudb.mysql.nio.MySQLConnection" additivity="false">

<level value="debug" />

<appender-ref ref="FILE2" />

</logger>


<root>

<level value="debug" />

<appender-ref ref="FILE" />

<!--<appender-ref ref="FILE" />-->

</root>





<Loggers>

<!--<AsyncLogger name="io.mycat" level="info" includeLocation="true" additivity="false">-->

<!--<AppenderRef ref="Console"/>-->

<!--<AppenderRef ref="RollingFile"/>-->

<!--</AsyncLogger>-->

<asyncRoot level="debug" includeLocation="true">


<!--<AppenderRef ref="Console" />-->

<AppenderRef ref="RollingFile"/>


</asyncRoot>

</Loggers>

</Configuration>




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