Mysql Scalability(3)Amoeba - Proxy - Reads and Writes
Oh, seem that the Amoeba is working with version 2.2.0. I will try this version with source codes.
Find the start script file bin/amoeba, find the line which configure the JAVA_OPTS, change it as follow:
DEFAULT_OPTS="-server -Xms256m -Xmx256m -Xss256k"
Then we can run
>bin/amoeba start
One Machine Proxy
Check the configuration files for db connection information
>vi dbServers.xml
<dbServer name="server1" parent="abstractServer"> <factoryConfig> <property name="ipAddress">ubuntu-master</property> </factoryConfig> </dbServer> <!-- <dbServer name="server2" parent="abstractServer"> <factoryConfig> <property name="ipAddress">ubuntu-client1</property> </factoryConfig> </dbServer> --> <dbServer name="multiPool"virtual="true"> <poolConfig class="com.meidusa.amoeba.server.MultipleServerPool"> <!-- Load balancing strategy: 1=ROUNDROBIN , 2=WEIGHTBASED , 3=HA--> <property name="loadbalance">1</property> <!-- Separated by commas,such as: server1,server2,server1 --> <property name="poolNames">server1</property> </poolConfig> </dbServer>
Check the Proxy Connection Configuration
>vi amoeba.xml
<service
name="Amoeba Monitor Server"
class="com.meidusa.amoeba.monitor.MonitorServer">
<!-- port -->
<!-- default value: random number
<property name="port">9066</property>
-->
<!-- bind ipAddress -->
<property name="ipAddress">0.0.0.0</property>
<property name="daemon">true</property>
<property name="manager">${clientConnectioneManager}</property> <property name="connectionFactory">
<bean class="com.meidusa.amoeba.monitor.net.MonitorClientConnectionFactory"></bean>
</property>
</service>
After star the amoeba, we can use this proxy to connect to the DB.
>mysql -h ubuntu-master -u root -P 8066 -p
Multiple Machine - Separating Writes and Reads
Grant the Privileges
>use mysql;
>grant all privileges on test.* to root@"%" identified by 'kaishi';
>flush privileges;
Show the SQL
>use mysql
>show variables like "%general_log%";
+------------------+----------------------------------+ | Variable_name | Value | +------------------+----------------------------------+ | general_log | OFF | | general_log_file | /var/lib/mysql/ubuntu-master.log | +------------------+----------------------------------+ 2 rows in set (0.00 sec)
>set global general_log = true;
>sudo tail -f /var/lib/mysql/ubuntu-master.log
Prepare the Configurations
<dbServer name="master1" parent="abstractServer"]]> <factoryConfig> <property name="ipAddress"]]>ubuntu-master</property> </factoryConfig> </dbServer> <dbServer name="slave11" parent="abstractServer"]]> <factoryConfig> <property name="ipAddress"]]>ubuntu-client1</property> </factoryConfig> </dbServer> <dbServer name="slavePool1"virtual="true"]]> <poolConfig class="com.meidusa.amoeba.server.MultipleServerPool"]]> <!-- Load balancing strategy: 1=ROUNDROBIN , 2=WEIGHTBASED , 3=HA--> <property name="loadbalance"]]>1</property> <!-- Separated by commas,such as: server1,server2,server1 --> <property name="poolNames"]]>slave11</property> </poolConfig> </dbServer>
<queryRouter class="com.meidusa.amoeba.mysql.parser.MysqlQueryRouter"]]> <property name="ruleLoader"]]> <bean class="com.meidusa.amoeba.route.TableRuleFileLoader"]]> <property name="ruleFile"]]>${amoeba.home}/conf/rule.xml</property> <property name="functionFile"]]>${amoeba.home}/conf/ruleFunctionMap.xml</property> </bean> </property> <property name="sqlFunctionFile"]]>${amoeba.home}/conf/functionMap.xml</property> <property name="LRUMapSize"]]>1500</property> <property name="defaultPool"]]>master1</property> <property name="writePool"]]>master1</property> <property name="readPool"]]>slavePool1</property> <property name="needParse"]]>true</property> </queryRouter>
Execute these SQLs to Verify
>insert into branduser(id,username,age) values (2, "kiko", 28);
>select * from branduser;
Here is the slave machines
140729 11:14:15 44 Queryselect * from branduser 140729 11:16:13 1 QueryBEGIN 1 Queryinsert into branduser(id,username,age) values (2, "kiko", 28) 1 QueryCOMMIT /* implicit, from Xid_log_event */ 140729 11:16:53 44 Queryselect * from branduser
Here is the master machines
140729 11:16:13 43 Queryinsert into branduser(id,username,age) values (2, "kiko", 28)
That works well to separate the reads and writes.
References:
Download the mysql-proxy all versions
https://downloads.skysql.com/archive/index/p/mysql-proxy/v/0.8
http://askubuntu.com/questions/477873/how-do-i-work-around-a-stack-size-specified-is-too-small-error-in-java-on-powe
http://boke.25k5.com/kan16489.html
http://www.cnblogs.com/taven/archive/2012/09/11/2680282.html
http://www.aslibra.com/blog/post/amoeba_mysql_proxy_rw_split.php
https://www.centos.bz/2012/05/amoeba-for-mysql/
http://pengranxiang.iteye.com/blog/1145342
http://sillycat.iteye.com/blog/2070163 mysql logging