Amoeba For MySQL读写分离

Amoeba安装,参考http://hi.baidu.com/itfenqing/item/79fe989838e1e8ad83d2959c

Amoeba版本为:amoeba-mysql-1.3.1-BETA.zip

更改amoeba.xml配置文件,配置如下:

<?xml version="1.0" encoding="gbk"?>

<!DOCTYPE amoeba:configuration SYSTEM "amoeba.dtd">
<amoeba:configuration xmlns:amoeba="http://amoeba.meidusa.com/">

<server>
<!-- proxy server绑定的端口 -->
<property name="port">8066</property>

<!-- proxy server绑定的IP -->
<property name="ipAddress">192.168.1.110</property>
<!-- proxy server net IO Read thread size -->
<property name="readThreadPoolSize">20</property>

<!-- proxy server client process thread size -->
<property name="clientSideThreadPoolSize">30</property>

<!-- mysql server data packet process thread size -->
<property name="serverSideThreadPoolSize">30</property>

<!-- socket Send and receive BufferSize(unit:K) -->
<property name="netBufferSize">128</property>

<!-- Enable/disable TCP_NODELAY (disable/enable Nagle's algorithm). -->
<property name="tcpNoDelay">true</property>

<!-- 对外验证的用户名 -->
<property name="user">root</property>

<!-- 对外验证的密码 -->
<property name="password">password</property>

<!-- query timeout( default: 60 second , TimeUnit:second) -->
<property name="queryTimeout">60</property>
</server>

<!--
每个ConnectionManager都将作为一个线程启动。
manager负责Connection IO读写/死亡检测
-->
<connectionManagerList>
<connectionManager name="defaultManager" class="com.meidusa.amoeba.net.MultiConnectionManagerWrapper">
<property name="subManagerClassName">com.meidusa.amoeba.net.AuthingableConnectionManager</property>

<!--
default value is avaliable Processors
<property name="processors">5</property>
-->
</connectionManager>
</connectionManagerList>

<dbServerList>
<!--
一台mysqlServer 需要配置一个pool，
如果多台 平等的mysql需要进行loadBalance，
平台已经提供一个具有负载均衡能力的objectPool：com.meidusa.amoeba.mysql.server.MultipleServerPool
简单的配置是属性加上 virtual="true",该Pool 不允许配置factoryConfig
或者自己写一个ObjectPool。
-->
<dbServer name="server1">

<!-- PoolableObjectFactory实现类 -->
<factoryConfig class="com.meidusa.amoeba.mysql.net.MysqlServerConnectionFactory">
<property name="manager">defaultManager</property>

<!-- 真实mysql数据库端口 -->
<property name="port">3306</property>

<!-- 真实mysql数据库IP -->
<property name="ipAddress">192.168.1.121</property>
<property name="schema">test</property>

<!-- 用于登陆mysql的用户名 -->
<property name="user">zhang</property>

<!-- 用于登陆mysql的密码 -->

<property name="password">zhang123</property>

</factoryConfig>

<!-- ObjectPool实现类 -->
<poolConfig class="com.meidusa.amoeba.net.poolable.PoolableObjectPool">
<property name="maxActive">200</property>
<property name="maxIdle">200</property>
<property name="minIdle">10</property>
<property name="minEvictableIdleTimeMillis">600000</property>
<property name="timeBetweenEvictionRunsMillis">600000</property>
<property name="testOnBorrow">true</property>
<property name="testWhileIdle">true</property>
</poolConfig>
</dbServer>

<dbServer name="server2">

<!-- PoolableObjectFactory实现类 -->
<factoryConfig class="com.meidusa.amoeba.mysql.net.MysqlServerConnectionFactory">
<property name="manager">defaultManager</property>

<!-- 真实mysql数据库端口 -->
<property name="port">3306</property>

<!-- 真实mysql数据库IP -->
<property name="ipAddress">192.168.1.108</property>
<property name="schema">test</property>

<!-- 用于登陆mysql的用户名 -->
<property name="user">zhang</property>

<!-- 用于登陆mysql的密码 -->

<property name="password">zhang123</property>

</factoryConfig>

<!-- ObjectPool实现类 -->
<poolConfig class="com.meidusa.amoeba.net.poolable.PoolableObjectPool">
<property name="maxActive">200</property>
<property name="maxIdle">200</property>
<property name="minIdle">10</property>
<property name="minEvictableIdleTimeMillis">600000</property>
<property name="timeBetweenEvictionRunsMillis">600000</property>
<property name="testOnBorrow">true</property>
<property name="testWhileIdle">true</property>
</poolConfig>
</dbServer>

<dbServer name="master" virtual="true">
<poolConfig class="com.meidusa.amoeba.server.MultipleServerPool">
<!-- 负载均衡参数 1=ROUNDROBIN , 2=WEIGHTBASED , 3=HA-->
<property name="loadbalance">1</property>

<!-- 参与该pool负载均衡的poolName列表以逗号分割 -->
<property name="poolNames">server1</property>
</poolConfig>
</dbServer>

<dbServer name="slave" virtual="true">
<poolConfig class="com.meidusa.amoeba.server.MultipleServerPool">
<!-- 负载均衡参数 1=ROUNDROBIN , 2=WEIGHTBASED , 3=HA-->
<property name="loadbalance">1</property>

<!-- 参与该pool负载均衡的poolName列表以逗号分割 -->
<property name="poolNames">server1,server2</property>
</poolConfig>
</dbServer>

</dbServerList>

<queryRouter class="com.meidusa.amoeba.mysql.parser.MysqlQueryRouter">
<property name="ruleConfig">${amoeba.home}/conf/rule.xml</property>
<property name="functionConfig">${amoeba.home}/conf/functionMap.xml</property>
<property name="ruleFunctionConfig">${amoeba.home}/conf/ruleFunctionMap.xml</property>
<property name="LRUMapSize">1500</property>
<property name="defaultPool">master</property>

<property name="writePool">master</property>
<property name="readPool">slave</property>
<property name="needParse">true</property>
</queryRouter>
</amoeba:configuration>

本配置文件来源于:http://blog.chinaunix.net/uid-20639775-id-154600.html

启动amoeba:

/PATH/amoeba &

如果出现以下错误:

The stack size specified is too small, Specify at least 160k
Error: Could not create the Java Virtual Machine.

Error: A fatal exception has occurred. Program will exit.

解决方法：

打开bin目录下 的amoeba启动文件

# vim amoeba

修改58行的Xss参数：

DEFAULT_OPTS="-server -Xms1024m -Xmx1024m -Xss128k"

修改为：
DEFAULT_OPTS="-server -Xms1024m -Xmx1024m -Xss256k"