MySQL5.7服务器IP是192.168.31.209及192.168.31.210
vi /usr/local/mycat/conf/schema.xml
<?xml version="1.0"?>
<!DOCTYPE mycat:schema SYSTEM "schema.dtd">
<mycat:schema xmlns:mycat="http://io.mycat/"><schema name="TESTDB" checkSQLschema="false" sqlMaxLimit="100" dataNode="dn1"><table name="t3" dataNode="dn1,dn2" rule="auto-sharding-long"/></schema><dataNode name="dn1" dataHost="localhost1" database="test" /><dataNode name="dn2" dataHost="localhost2" database="test" /><dataHost name="localhost1" maxCon="1000" minCon="10" balance="1" writeType="0" dbType="mysql" dbDriver="native" switchType="1"><heartbeat>select user()</heartbeat><writeHost host="db1" url="192.168.31.209:3306" user="root" password="123456"><readHost host="db2" url="192.168.31.209:3308" user="root" password="123456" /></writeHost><writeHost host="db3" url="192.168.31.210:3306" user="root" password="123456"><readHost host="db4" url="192.168.31.210:3308" user="root" password="123456" /></writeHost></dataHost><dataHost name="localhost2" maxCon="1000" minCon="10" balance="1" writeType="0" dbType="mysql" dbDriver="native" switchType="1"><heartbeat>select user()</heartbeat><writeHost host="db1" url="192.168.31.210:3307" user="root" password="123456"><readHost host="db2" url="192.168.31.210:3309" user="root" password="123456" /></writeHost><writeHost host="db3" url="192.168.31.209:3307" user="root" password="123456"><readHost host="db4" url="192.168.31.209:3309" user="root" password="123456" /></writeHost></dataHost>
</mycat:schema>
vi /usr/local/mycat/conf/rule.xml
<tableRule name="auto-sharding-long"><rule><columns>id</columns> #将id改成你表中字段<algorithm>rang-long</algorithm> #根据rang-long函数查找到指定的规则文件autopartition-long.txt</rule>
</tableRule>
vi /usr/local/mycat/conf/autopartition-long.txt
#默认采取的是安装兆(M)进行分配的，我们测试就采用自增数来控制
