mycat多逻辑库配置文件

schema.xml文件配置

<?xml version="1.0"?>
<!DOCTYPE mycat:schema SYSTEM "schema.dtd">
<mycat:schema xmlns:mycat="http://io.mycat/">

<!--第一个逻辑库 -->
<schema name="TESTDB" checkSQLschema="false" sqlMaxLimit="100" dataNode="dn1">

</schema>
<!--第二个逻辑库 -->
<schema name="TESTDB1" checkSQLschema="false" sqlMaxLimit="100" dataNode="dn2">

</schema>


<!-- <dataNode name="dn1$0-743" dataHost="localhost1" database="db$0-743"
/> -->

<!--第一个库指定 -->
<dataNode name="dn1" dataHost="localhost1" database="wordpress" />
<!--第二个库指定 -->
<dataNode name="dn2" dataHost="localhost2" database="powerdns" />

<dataHost name="localhost1" maxCon="1000" minCon="10" balance="2"
writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100">
<heartbeat>select user()</heartbeat>
<!-- can have multi write hosts -->
<!--第一个库指定数据库连接配置 -->
<writeHost host="hostM1" url="10.0.0.88:3306" user="wordpress" password="123456">
<!-- can have multi read hosts -->
<readHost host="hostS2" url="10.0.0.98:3306" user="wordpress" password="123456" />

</writeHost>
</dataHost>
<!--第二个库指定数据库连接配置 -->
<dataHost name="localhost2" maxCon="1000" minCon="10" balance="2"
writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100">
<heartbeat>select user()</heartbeat>
<!-- can have multi write hosts -->
<writeHost host="hostM2" url="10.0.0.88:3306" user="powerdns" password="123456">
<!-- can have multi read hosts -->
<readHost host="hostS2" url="10.0.0.98:3306" user="powerdns" password="123456" />
</writeHost>

</dataHost>

</mycat:schema>

要实现多逻辑库且映射到后端库，须在server.xml配置文件中更改以下选项

<user name="root" defaultAccount="true">
<property name="password">123456</property>
<property name="schemas">TESTDB,TESTDB1</property>    #修改此行，将需要映射的库加入此行，用逗号隔开
<property name="defaultSchema">TESTDB</property>
<!--No MyCAT Database selected 错误前会尝试使用该schema作为schema，不设置则为null,报错 -->