Separation based on the read mycat implemented mysql

You need to have the following environment

1 mysql master copy from

2 jdk installation and configuration environment variables

Please refer to mysql master-slave replication

Refer to install mysql in linux

The following is my demo Reference:

192.168.142.26 master- mysql includes a main condition from the master copy from

192.168.142.25 slave- mysql includes a master from the master copy condition from

192.168.142.27 slave- mysql includes a master-slave from the master copy condition

192.168.142.28 mycat install mysql

The compressed Mycat-server-1.6.7.3-release-20190828135747-linux.tar.gz copied to the / usr / local unzipped

tar -zvxf Mycat-server-1.6.7.3-release-20190828135747-linux.tar.gz

Check whether the installation and configuration environment variable jdk

jps # or java -version

Please refer to linux (centOS7) installed jdk configuration environment variable

schema.xml file modifications myact / conf follows

    <Schema name = "the TESTDB" checkSQLschema = "to true" sqlMaxLimit = "100" Datanode = "DNl"> 
	</ Schema> 
		
	<Datanode name = "DNl" DataHost = "host1" Database = "Test" /> 

	<! - 
	 writeType = "1", all the write operations are arranged to send a random writeHost 
		. 3 based on the switching mechanism of the MySQL galary cluster (cluster adapted) (1.4.1) 
	-> 
	<DataHost name = "host1" maxCon = "1000" Mincon = "10" = Balance ". 3" 
			  writeType = ". 1" dbType = "MySQL" dbDriver = "Native" switchType = ". 1" slaveThreshold = "100"> 
		<-! check the heartbeat -> 
		<heartbeat> SELECT User ( ) </ Heartbeat> 
		<-! wrote node configuration -> 
		<Host = writeHost "hostM1" url = "192.168.142.26:3306" the User = "root" 
				   password = "123456"> 
			<-! account password from the address database and the database ->
			<readHost host="hostM2" url="192.168.142.25:3306" user="root" password="123456" />
			<readHost host="hostM3" url="192.168.142.27:3306" user="root" password="123456" />
		</writeHost>
	</dataHost>

　　service.xml file modifications myact / conf follows

<user name="test" defaultAccount="true">
		<property name="password">123456</property>
		<!-- 与schema中的名称保持一致 -->
		<property name="schemas">TESTDB</property>
</user>

　rule.xml file modifications myact / conf follows　

	 <tableRule name="rule1">
                <rule>  
						<!-- 主键 -->
                        <columns>id</columns>
						<!-- 分片规则 -->
                        <algorithm>func1</algorithm>
                </rule>
        </tableRule>

        <function name="func1" class="io.mycat.route.function.PartitionByLong">
				<!-- 分片数量 -->
                <property name="partitionCount">8</property>
				<!-- 分片最大长度 -->
                <property name="partitionLength">128</property>
        </function>

修改mycat下的log4j2.xml

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

启动myacat

cd /usr/local/mycat/bin
./mycat start #启动mycat
./mycat status #查看启动状态

登录mycat

mysql -h 192.168.142.28 -P8066  -u test -p

use TESTDB;
create table user(id int primary key,name varchar(100));
insert into user(id,name) values(1,'xiaoming');
select @@hostname; select * from test.user;

查看日志

192.168.142.26 只有写节点进行了写操作

192.168.142.25 192.168.142.27 读节点进行读取数据

简单的mycat环境搭建ok！如果出现无法连接的现象，记得关闭防火墙！

如有问题，欢迎交流

Separation based on the read mycat implemented mysql

Guess you like