mycat 编辑schema.xml

<schema name="user" checkSQLschema="false" sqlMaxLimit="100" dataNode="user" />
<schema name="pay"  checkSQLschema="false" sqlMaxLimit="100" dataNode="pay" >
   <table name="order" dataNode="pay1,pay2" rule="rule1"/>
</schema>

<dataNode name="user" dataHost="host" database="user" />
<dataNode name="pay1" dataHost="host" database="pay1" />
<dataNode name="pay2" dataHost="host" database="pay2" />

<dataHost name="host" maxCon="1000" minCon="10" balance="0"
   writeType="0" dbType="mysql" dbDriver="native">
   <heartbeat>select 1</heartbeat>
   <!-- can have multi write hosts -->
   <writeHost host="hostM1" url="192.168.0.2:3306" user="root" password="root" />
   <writeHost host="hostM2" url="192.168.0.3:3306" user="root" password="root" />
</dataHost>