mysql主从复制以及读写分离－－读写分离

MySQL的读写分离目前用得比较多的是mysql官方的mysql-proxy以及amoeba for mysql;

目前社区对amoeba的评价比较高，具体配置如下：

下载安装：

amoeba for mysql的下载地址：http://cznic.dl.sourceforge.net/project/amoeba/Amoeba%20for%20mysql/3.x/amoeba-mysql-3.0.5-RC-distribution.zip

linux下面的安装很简单：

直接unzip即可；

配置：

dbServers.xml

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

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

		<!-- 
			Each dbServer needs to be configured into a Pool,
			If you need to configure multiple dbServer with load balancing that can be simplified by the following configuration:
			 add attribute with name virtual = "true" in dbServer, but the configuration does not allow the element with name factoryConfig
			 such as 'multiPool' dbServer   
		-->
		
	<dbServer name="abstractServer" abstractive="true">
		<factoryConfig class="com.meidusa.amoeba.mysql.net.MysqlServerConnectionFactory">
			<property name="connectionManager">${defaultManager}</property>
			<property name="sendBufferSize">64</property>
			<property name="receiveBufferSize">128</property>
				
			<!-- mysql port -->
			<property name="port">3306</property>
			
			<!-- mysql schema -->
			<property name="schema">tpsFrame</property>
			
			<!-- mysql user -->
			<property name="user">root</property>
			
			<property name="password"></property>
		</factoryConfig>

		<poolConfig class="com.meidusa.toolkit.common.poolable.PoolableObjectPool">
			<property name="maxActive">500</property>
			<property name="maxIdle">500</property>
			<property name="minIdle">1</property>
			<property name="minEvictableIdleTimeMillis">600000</property>
			<property name="timeBetweenEvictionRunsMillis">600000</property>
			<property name="testOnBorrow">true</property>
			<property name="testOnReturn">true</property>
			<property name="testWhileIdle">true</property>
		</poolConfig>
	</dbServer>

	<dbServer name="server1"  parent="abstractServer">
		<factoryConfig>
			<!-- mysql ip -->
			<property name="ipAddress">172.16.3.79</property>
  <!-- mysql user -->
                        <property name="user">andy</property>

                        <property name="password">andy</property>
		</factoryConfig>
	</dbServer>
	
	<dbServer name="server2"  parent="abstractServer">
		<factoryConfig>
			<!-- mysql ip -->
			<property name="ipAddress">172.16.3.105</property>
 <property name="user">andyslave</property>

                        <property name="password">andyslave</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,server2</property>
		</poolConfig>
	</dbServer>
		
</amoeba:dbServers>

写道

这里主要server1与server2两个dbServer节点,这两个节点继承自abstractServer，如果用户名与密码相同，那么你此处不需要填写用户名与密码；否则你可以在这里重写！

amoeba.xml 

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

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

	<proxy>
	
		<!-- service class must implements com.meidusa.amoeba.service.Service -->
		<service name="Amoeba for Mysql" class="com.meidusa.amoeba.mysql.server.MySQLService">
			<!-- port -->
			<property name="port">8888</property>
			
			<!-- bind ipAddress --> 
			<property name="ipAddress">172.16.3.38</property>
			
			<property name="connectionFactory">
				<bean class="com.meidusa.amoeba.mysql.net.MysqlClientConnectionFactory">
					<property name="sendBufferSize">128</property>
					<property name="receiveBufferSize">64</property>
				</bean>
			</property>
			
			<property name="authenticateProvider">
				<bean class="com.meidusa.amoeba.mysql.server.MysqlClientAuthenticator">
					
					<property name="user">root</property>
					
					<property name="password"></property>
					
					<property name="filter">
						<bean class="com.meidusa.toolkit.net.authenticate.server.IPAccessController">
							<property name="ipFile">${amoeba.home}/conf/access_list.conf</property>
						</bean>
					</property>
				</bean>
			</property>
			
		</service>
		
		<runtime class="com.meidusa.amoeba.mysql.context.MysqlRuntimeContext">
			
			<!-- proxy server client process thread size -->
			<property name="executeThreadSize">128</property>
			
			<!-- per connection cache prepared statement size  -->
			<property name="statementCacheSize">500</property>
			
			<!-- default charset -->
			<property name="serverCharset">utf8</property>
			
			<!-- query timeout( default: 60 second , TimeUnit:second) -->
			<property name="queryTimeout">60</property>
		</runtime>
		
	</proxy>
	
	<!-- 
		Each ConnectionManager will start as thread
		manager responsible for the Connection IO read , Death Detection
	-->
	<connectionManagerList>
		<connectionManager name="defaultManager" class="com.meidusa.toolkit.net.MultiConnectionManagerWrapper">
			<property name="subManagerClassName">com.meidusa.toolkit.net.AuthingableConnectionManager</property>
		</connectionManager>
	</connectionManagerList>
	
		<!-- default using file loader -->
	<dbServerLoader class="com.meidusa.amoeba.context.DBServerConfigFileLoader">
		<property name="configFile">${amoeba.home}/conf/dbServers.xml</property>
	</dbServerLoader>
	
	<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">multiPool</property>
		
		<property name="writePool">server1</property>
		<property name="readPool">server2</property>
		
		<property name="needParse">true</property>
	</queryRouter>
</amoeba:configuration>

写道

这个配置文件主要注意以下几点：
<property name="port">8888</property>这是代理公布出去的端口；
<property name="ipAddress">172.16.3.38</property>这是代理公布出去的IP；
<property name="authenticateProvider">
<bean class="com.meidusa.amoeba.mysql.server.MysqlClientAuthenticator">
<property name="user">root</property>
<property name="password"></property>
这是连接该代码的帐号与密码；

 access_list_conf配置

#配置IP访问控制
#
# 优先级别从上往下，前面的优先级别高，每条一行

#192.*.1.236-239:yes 
#比如192.34.1.238则可以访问，否则将不能访问。

#218.85.*.*:no
#127.0.0.1:yes
172.16.50.250:yes

写道

这是对访问该代理的IP权限权限，一般代理需要调用数据库代理的应用服务器IP

写道

附件有配置文件示例，版本为amoeba-proxy-3.0.4-BETA

注意：
要确保你的代理服务器IP能够telnet通读取服务器的3306地址；可tail -f amoeba安装地址/logs/net.log查看网络连接日志；