mysql slave,master配置
			
          
 			Posted on 2011-01-21 11:09 李春生 閱讀(2939) 評論(0)  編輯  收藏  所屬分類: linux 、mysql 
			
			


		
          
		
          一個完整的mysql讀寫分離環(huán)境包括以下幾個部分：
          

          應(yīng)用程序client 
          
database proxy 
          
database集群 
          
在本次實戰(zhàn)中，應(yīng)用程序client基于c3p0連接后端的database proxy。database proxy負責管理client實際訪問database的路由策略，采用開源框架amoeba。database集群采用mysql的master-slave的replication方案。整個環(huán)境的結(jié)構(gòu)圖如下所示：
          

           
          

          實戰(zhàn)步驟與詳解
          

          一.搭建mysql的master-slave環(huán)境 
          

          1）分別在host1（10.20.147.110）和host2（10.20.147.111）上安裝mysql（5.0.45），具體安裝方法可見官方文檔
          

          2）配置master
          

          首先編輯/etc/my.cnf，添加以下配置：
          

          log-bin=mysql-bin #slave會基于此log-bin來做replication
          
server-id=1 #master的標示
          
binlog-do-db = amoeba_study #用于master-slave的具體數(shù)據(jù)庫
          

          然后添加專門用于replication的用戶：
          

          mysql> GRANT REPLICATION SLAVE ON *.* TO repl@10.20.147.111 IDENTIFIED BY '111111';
          

          重啟mysql，使得配置生效：
          

          /etc/init.d/mysqld restart
          

          最后查看master狀態(tài)：
          

           
          

          3）配置slave
          

          首先編輯/etc/my.cnf，添加以下配置：
          

          server-id=2 #slave的標示
          

          配置生效后，配置與master的連接：
          

          mysql> CHANGE MASTER TO
          
    -> MASTER_HOST='10.20.147.110',
          
    -> MASTER_USER='repl',
          
    -> MASTER_PASSWORD='111111',
          
    -> MASTER_LOG_FILE='mysql-bin.000003',
          
    -> MASTER_LOG_POS=161261;
          

          其中MASTER_HOST是master機的ip，MASTER_USER和MASTER_PASSWORD就是我們剛才在master上添加的用戶，MASTER_LOG_FILE和MASTER_LOG_POS對應(yīng)與master status里的信息
          

          最后啟動slave：
          

          mysql> start slave;
          

          4）驗證master-slave搭建生效
          

          通過查看slave機的log（/var/log/mysqld.log）：
          

          100703 10:51:42 [Note] Slave I/O thread: connected to master 'repl@10.20.147.110:3306',  replication started in log 'mysql-bin.000003' at position 161261
          

          如看到以上信息則證明搭建成功，如果有問題也可通過此log找原因
          

          二.搭建database proxy 
          

          此次實戰(zhàn)中database proxy采用amoeba ，它的相關(guān)信息可以查閱官方文檔，不在此詳述
          

          1）安裝amoeba
          

          下載amoeba（1.2.0-GA）后解壓到本地（D:\openSource\amoeba-mysql-1.2.0-GA），即完成安裝
          

          2）配置amoeba
          

          先配置proxy連接和與各后端mysql服務(wù)器連接信息（D:\openSource\amoeba-mysql-1.2.0-GA\conf\amoeba.xml）：
          

          <server>  
          
    <!-- proxy server綁定的端口 -->  
          
    <property name="port">8066</property>  
          
       
          
    <!-- proxy server綁定的IP -->  
          
    <!--   
          
    <property name="ipAddress">127.0.0.1</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>  
          
       
          
    <!-- 對外驗證的用戶名 -->  
          
    <property name="user">root</property>  
          
       
          
    <!-- 對外驗證的密碼 -->  
          
    <property name="password">root</property>  
          
</server>  
          
<server>
          
 <!-- proxy server綁定的端口 -->
          
 <property name="port">8066</property>
          
 
          
 <!-- proxy server綁定的IP -->
          
 <!-- 
          
 <property name="ipAddress">127.0.0.1</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>
          
 
          
 <!-- 對外驗證的用戶名 -->
          
 <property name="user">root</property>
          
 
          
 <!-- 對外驗證的密碼 -->
          
 <property name="password">root</property>
          
</server> 
          

          以上是proxy提供給client的連接配置
          

          <dbServerList>  
          
    <dbServer name="server1">            
          
        <!-- PoolableObjectFactory實現(xiàn)類 -->  
          
        <factoryConfig class="com.meidusa.amoeba.mysql.net.MysqlServerConnectionFactory">  
          
            <property name="manager">defaultManager</property>  
          
               
          
            <!-- 真實mysql數(shù)據(jù)庫端口 -->  
          
            <property name="port">3306</property>  
          
               
          
            <!-- 真實mysql數(shù)據(jù)庫IP -->  
          
            <property name="ipAddress">10.20.147.110</property>  
          
            <property name="schema">amoeba_study</property>  
          
               
          
            <!-- 用于登陸mysql的用戶名 -->  
          
            <property name="user">root</property>  
          
               
          
            <!-- 用于登陸mysql的密碼 -->  
          
            <property name="password"></property>  
          
               
          
        </factoryConfig>  
          
           
          
        <!-- ObjectPool實現(xiàn)類 -->  
          
        <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實現(xiàn)類 -->  
          
        <factoryConfig class="com.meidusa.amoeba.mysql.net.MysqlServerConnectionFactory">  
          
            <property name="manager">defaultManager</property>  
          
               
          
            <!-- 真實mysql數(shù)據(jù)庫端口 -->  
          
            <property name="port">3306</property>  
          
               
          
            <!-- 真實mysql數(shù)據(jù)庫IP -->  
          
            <property name="ipAddress">10.20.147.111</property>  
          
            <property name="schema">amoeba_study</property>  
          
               
          
            <!-- 用于登陸mysql的用戶名 -->  
          
            <property name="user">root</property>  
          
               
          
            <!-- 用于登陸mysql的密碼 -->  
          
            <property name="password"></property>  
          
               
          
        </factoryConfig>  
          
           
          
        <!-- ObjectPool實現(xiàn)類 -->  
          
        <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>          
          
</dbServerList>  
          
<dbServerList>
          
 <dbServer name="server1">   
          
  <!-- PoolableObjectFactory實現(xiàn)類 -->
          
  <factoryConfig class="com.meidusa.amoeba.mysql.net.MysqlServerConnectionFactory">
          
   <property name="manager">defaultManager</property>
          
   
          
   <!-- 真實mysql數(shù)據(jù)庫端口 -->
          
   <property name="port">3306</property>
          
   
          
   <!-- 真實mysql數(shù)據(jù)庫IP -->
          
   <property name="ipAddress">10.20.147.110</property>
          
   <property name="schema">amoeba_study</property>
          
   
          
   <!-- 用于登陸mysql的用戶名 -->
          
   <property name="user">root</property>
          
   
          
   <!-- 用于登陸mysql的密碼 -->
          
   <property name="password"></property>
          
   
          
  </factoryConfig>
          
  
          
  <!-- ObjectPool實現(xiàn)類 -->
          
  <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實現(xiàn)類 -->
          
  <factoryConfig class="com.meidusa.amoeba.mysql.net.MysqlServerConnectionFactory">
          
   <property name="manager">defaultManager</property>
          
   
          
   <!-- 真實mysql數(shù)據(jù)庫端口 -->
          
   <property name="port">3306</property>
          
   
          
   <!-- 真實mysql數(shù)據(jù)庫IP -->
          
   <property name="ipAddress">10.20.147.111</property>
          
   <property name="schema">amoeba_study</property>
          
   
          
   <!-- 用于登陸mysql的用戶名 -->
          
   <property name="user">root</property>
          
   
          
   <!-- 用于登陸mysql的密碼 -->
          
   <property name="password"></property>
          
   
          
  </factoryConfig>
          
  
          
  <!-- ObjectPool實現(xiàn)類 -->
          
  <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>  
          
</dbServerList> 
          

          以上是proxy與后端各mysql數(shù)據(jù)庫服務(wù)器配置信息，具體配置見注釋很明白了
          

          最后配置讀寫分離策略：
          

          <queryRouter class="com.meidusa.amoeba.mysql.parser.MysqlQueryRouter">  
          
    <property name="LRUMapSize">1500</property>  
          
    <property name="defaultPool">server1</property>  
          
    <property name="writePool">server1</property>  
          
    <property name="readPool">server2</property>  
          
    <property name="needParse">true</property>  
          
</queryRouter>  
          
<queryRouter class="com.meidusa.amoeba.mysql.parser.MysqlQueryRouter">
          
 <property name="LRUMapSize">1500</property>
          
 <property name="defaultPool">server1</property>
          
 <property name="writePool">server1</property>
          
 <property name="readPool">server2</property>
          
 <property name="needParse">true</property>
          
</queryRouter> 
          

          從以上配置不然發(fā)現(xiàn)，寫操作路由到server1（master），讀操作路由到server2（slave）
          

          3）啟動amoeba
          

          在命令行里運行D:\openSource\amoeba-mysql-1.2.0-GA\amoeba.bat即可：
          

          log4j:WARN log4j config load completed from file:D:\openSource\amoeba-mysql-1.2.0-GA\conf\log4j.xml
          
log4j:WARN ip access config load completed from file:D:\openSource\amoeba-mysql-1.2.0-GA/conf/access_list.conf
          
2010-07-03 09:55:33,821 INFO  net.ServerableConnectionManager - Server listening on 0.0.0.0/0.0.0.0:8066.
          
三.client端調(diào)用與測試 
          

          1）編寫client調(diào)用程序
          

          具體程序細節(jié)就不詳述了，只是一個最普通的基于mysql driver的jdbc的數(shù)據(jù)庫操作程序
          

          2）配置數(shù)據(jù)庫連接
          

          本client基于c3p0，具體數(shù)據(jù)源配置如下：
          

          <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"  
          
    destroy-method="close">  
          
    <property name="driverClass" value="com.mysql.jdbc.Driver" />  
          
    <property name="jdbcUrl" value="jdbc:mysql://localhost:8066/amoeba_study" />  
          
    <property name="user" value="root" />  
          
    <property name="password" value="root" />  
          
    <property name="minPoolSize" value="1" />  
          
    <property name="maxPoolSize" value="1" />  
          
    <property name="maxIdleTime" value="1800" />  
          
    <property name="acquireIncrement" value="1" />  
          
    <property name="maxStatements" value="0" />  
          
    <property name="initialPoolSize" value="1" />  
          
    <property name="idleConnectionTestPeriod" value="1800" />  
          
    <property name="acquireRetryAttempts" value="6" />  
          
    <property name="acquireRetryDelay" value="1000" />  
          
    <property name="breakAfterAcquireFailure" value="false" />  
          
    <property name="testConnectionOnCheckout" value="true" />  
          
    <property name="testConnectionOnCheckin" value="false" />  
          
</bean>  
          
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
          
 destroy-method="close">
          
 <property name="driverClass" value="com.mysql.jdbc.Driver" />
          
 <property name="jdbcUrl" value="jdbc:mysql://localhost:8066/amoeba_study" />
          
 <property name="user" value="root" />
          
 <property name="password" value="root" />
          
 <property name="minPoolSize" value="1" />
          
 <property name="maxPoolSize" value="1" />
          
 <property name="maxIdleTime" value="1800" />
          
 <property name="acquireIncrement" value="1" />
          
 <property name="maxStatements" value="0" />
          
 <property name="initialPoolSize" value="1" />
          
 <property name="idleConnectionTestPeriod" value="1800" />
          
 <property name="acquireRetryAttempts" value="6" />
          
 <property name="acquireRetryDelay" value="1000" />
          
 <property name="breakAfterAcquireFailure" value="false" />
          
 <property name="testConnectionOnCheckout" value="true" />
          
 <property name="testConnectionOnCheckin" value="false" />
          
</bean> 
          

          值得注意是，client端只需連到proxy，與實際的數(shù)據(jù)庫沒有任何關(guān)系，因此jdbcUrl、user、password配置都對應(yīng)于amoeba暴露出來的配置信息
          

          3）調(diào)用與測試
          

          首先插入一條數(shù)據(jù)：insert into zone_by_id(id,name) values(20003,'name_20003')
          

          通過查看master機上的日志/var/lib/mysql/mysql_log.log：
          

          100703 11:58:42       1 Query       set names latin1
          
                      1 Query       SET NAMES latin1
          
                      1 Query       SET character_set_results = NULL
          
                      1 Query       SHOW VARIABLES
          
                      1 Query       SHOW COLLATION
          
                      1 Query       SET autocommit=1
          
                      1 Query       SET sql_mode='STRICT_TRANS_TABLES'
          
                      1 Query       SHOW VARIABLES LIKE 'tx_isolation'
          
                      1 Query       SHOW FULL TABLES FROM `amoeba_study` LIKE 'PROBABLYNOT'
          
                      1 Prepare     [1] insert into zone_by_id(id,name) values(?,?)
          
                      1 Prepare     [2] insert into zone_by_id(id,name) values(?,?)           
          
                      1 Execute     [2] insert into zone_by_id(id,name) values(20003,'name_20003') 
          

          得知寫操作發(fā)生在master機上
          

          通過查看slave機上的日志/var/lib/mysql/mysql_log.log：
          

          100703 11:58:42       2 Query       insert into zone_by_id(id,name) values(20003,'name_20003') 
          

          得知slave同步執(zhí)行了這條語句
          

          然后查一條數(shù)據(jù)：select t.name from zone_by_id t where t.id = 20003
          

          通過查看slave機上的日志/var/lib/mysql/mysql_log.log：
          

          100703 12:02:00      33 Query       set names latin1
          
                     33 Prepare     [1] select t.name from zone_by_id t where t.id = ?
          
                     33 Prepare     [2] select t.name from zone_by_id t where t.id = ?    
          
                     33 Execute     [2] select t.name from zone_by_id t where t.id = 20003  
          

          得知讀操作發(fā)生在slave機上
          

          并且通過查看slave機上的日志/var/lib/mysql/mysql_log.log發(fā)現(xiàn)這條語句沒在master上執(zhí)行
          

          通過以上驗證得知簡單的master-slave搭建和實戰(zhàn)得以生效
          

           
          

          本文來自CSDN博客，轉(zhuǎn)載請標明出處：http://blog.csdn.net/cutesource/archive/2010/07/03/5710645.aspx
          
 
          
	
          


          
	    
    




          





          


          

	
          
		
          
				
		
	
		
          
		
		
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