Mycat配置文件详解

server.xml详解

server.xml主要是配置我们连接时的权限过滤设置;例如我们可以在这里设置读写权限;用户登录验证;访问数据库的权限等等

<!--  配合上面的schema.xml 写的例子   -->
<?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*nexts;values;fors*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*nexts;values;fors*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;>DB01</property>
		
		<!-- 表级 DML 权限设置 -->
		<!-- 		表级别读写权限设置
		<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=;user;>
		<property name=;password;>123456</property>
		<property name=;schemas;>DB01</property>
		<property name=;readOnly;>true</property>
	</user>

</mycat:server>

<!--   默认的规则  根据id进行分片 -->
    <tableRule name=;auto-sharding-long;>
        <rule>
            <columns>id</columns>
<!--       具体的计算方式在rang-long中 这是一个引用  具体的路径在autopartition-long.txt -->
            <algorithm>rang-long</algorithm>
        </rule>
    </tableRule>