官方简介

Amoeba的中文意思是变型虫
主要解决:

• 降低 数据切分带来的复杂多数据库结构
• 提供切分规则并降低 数据切分规则 给应用带来的影响
• 降低db 与客户端的连接数

• 读写分离
 
个人简单描述
可能你还没明白Amoebla这鬼东西主要干麻的呢!比方说PHP环境众所周知,PHP没有数据连接池,如果PHP环境下MYSQL访问量大时会蹦掉,除非配置Cluster集群,而Amoeba就是在PHP程序和MYSQL之间,充当一个缓冲的作用。
 
准备工作
  • Server:192.168.1.208 #Amoeba
  • Server:192.168.1.11  #NDBD1(主)
  • Server:1921.68.1.13  #NDBD2(从)
  • 注:11和13两台服务器上,事先请安装好MYSQL单向步,不会配置访问http://skyson.blog.51cto.com/2497647/556600
  • 另请安装MYSQL版本必须5.1以上,因为新版的Amoeba2.10对5.1以下版本不稳定。
 

 
结构图
 
 
 
 
Step 1:配置Amoeba192.168.2.8读写分离  
  1. 1:解压安装包
  2. [root@Management down]# mkdir /usr/local/amoeba 
    [root@Management down]# tar -zxf amoeba-mysql-binary-2.1.0-RC5.tar.gz -C /usr/local/amoeba/
  3.  
  1. 2:进入配置目录,浏览文件
  2. [root@Management down]# cd /usr/local/amoeba/ 
    [root@Management amoeba]# ll 
    total 88 
    drwxr-xr-x 2 root root    4096 Jul 26 11:57 benchmark 
    drwxr-xr-x 2 root root    4096 Feb 28 09:25 bin 
    -rw-r--r-- 1 root root    3983 May 18 13:43 changelogs.txt 
    drwxr-xr-x 2 root root    4096 Jul 26 11:57 conf 
    drwxr-xr-x 3 root root    4096 Jul 26 11:57 lib 
    -rw-r--r-- 1 root root 34520 May 18 13:43 LICENSE.txt 
    -rw-r--r-- 1 root root    2031 May 18 13:43 README.html
  3. 3:进入主配置文件目录
  4. [root@Management amoeba]# cd conf/ 
    [root@Management conf]# ls 
    access_list.conf    amoeba.xml        dbServers.xml    functionMap.xml    log4j.xml    ruleFunctionMap.xml 
    amoeba.dtd                dbserver.dtd    function.dtd     log4j.dtd                rule.dtd     rule.xml
  1. 在这里我主要介绍配置  amoeba.xml、    dbServers.xml、 log4j.xml 三个主要的配置文件,其它文件没有特殊需要默认就可以了夺
  2. 4:vi amoeba.xml 修改主配置文件
  • 4.1)把默认端口8066改成3306
  • <property name="port">3066</property>
  • 4.2)把默认连接用户名和密码改成自己的
  • <property name="user">sky</property> 

                                                                                    <property name="password">123456</property>
  • 4.3)把默认的客户端线程数,请求数及服务端回应数改成200,300,300
  • <property name="readThreadPoolSize">200</property> 

                                                    <!-- proxy server client process thread size --> 
                                                    <property name="clientSideThreadPoolSize">300</property> 

                                                    <!-- mysql server data packet process thread size --> 
                                                    <property name="serverSideThreadPoolSize">300</property
  • 4.4)把默认注释掉的读写分离选项,把注释去掉并readpool修改成server2
  • <!-- 
                                    --> 
                                    <property name="writePool">server1</property> 
                                    <property name="readPool">server2</property>

                                         
  1.  5:vi dbServers.xml 增加SEVER2模块,里面的连接用户名密码及地址都表示两台MYSQL的物理机器,192.168.1.11和192.168.1.13 另SERVER1是写,SERVER是读
  2.  
  3. 需要手动增加SERVER2代码如下:
  4.   <dbServer name="abstractServer" abstractive="true"> 

        <factoryConfig class="com.meidusa.amoeba.mysql.net.MysqlServerConnectionFactory"> 

          <property name="manager">${defaultManager}</property> 

          <property name="sendBufferSize">64</property> 

          <property name="receiveBufferSize">128</property> 

             

          <!-- mysql port --> 

          <property name="port">3306</property> 

            

          <!-- mysql schema --> 

          <property name="schema">test</property> 

            

          <!-- mysql user --> 

          <property name="user">root</property> 

            

          <!--    mysql password 

          
    --> 

          <property name="password">123456</property> 

        </factoryConfig> 



        <poolConfig class="com.meidusa.amoeba.net.poolable.PoolableObjectPool"> 

          <property name="maxActive">500</property> 

          <property name="maxIdle">500</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="server1"    parent="abstractServer"> 

        <factoryConfig> 

          <!-- mysql ip --> 

          <property name="ipAddress">192.168.2.11</property> 

        </factoryConfig> 

      </dbServer>


  1. 最终改变成如下:
  2.  
  1. <?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="manager">${defaultManager}</property> 

          <property name="sendBufferSize">64</property> 

          <property name="receiveBufferSize">128</property> 

             

          <!-- mysql port --> 

          <property name="port">3306</property> 

            

          <!-- mysql schema --> 

          <property name="schema">test</property> 

            

          <!-- mysql user --> 

          <property name="user">root</property> 

            

          <!--    mysql password 

          
    --> 

          <property name="password">123456</property> 

        </factoryConfig> 



        <poolConfig class="com.meidusa.amoeba.net.poolable.PoolableObjectPool"> 

          <property name="maxActive">500</property> 

          <property name="maxIdle">500</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="server1"    parent="abstractServer"> 

        <factoryConfig> 

          <!-- mysql ip --> 

          <property name="ipAddress">192.168.2.11</property> 

        </factoryConfig> 

      </dbServer> 





          <!-- ########################把如上的内容复制到下面,来增加SERVER2############################ --> 





      <dbServer name="abstractServer" abstractive="true"> 

        <factoryConfig class="com.meidusa.amoeba.mysql.net.MysqlServerConnectionFactory"> 

          <property name="manager">${defaultManager}</property> 

          <property name="sendBufferSize">64</property> 

          <property name="receiveBufferSize">128</property> 

             

          <!-- mysql port --> 

          <property name="port">3306</property> 

            

          <!-- mysql schema --> 

          <property name="schema">test</property> 

            

          <!-- mysql user --> 

          <property name="user">root</property> 

            

          <property name="password">123456</property> 

        </factoryConfig> 



        <poolConfig class="com.meidusa.amoeba.net.poolable.PoolableObjectPool"> 

          <property name="maxActive">500</property> 

          <property name="maxIdle">500</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"    parent="abstractServer"> 

        <factoryConfig> 

          <!-- mysql ip --> 

          <property name="ipAddress">192.168.2.13</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> 

         

    </amoeba:dbServers> 
     
 
 
  • 6:修改log4j.xml 取消日志文件生成(太大了,磁盘很容易满)
  • <param name="file" value="${amoeba.home}/logs/project.log"/> 
    改成 
    <param name="file" value="<![CDATA[${amoeba.home}/logs/project.log>/dev/null]]>"/>
  • 7:性能优化,打开bin/amoeba

  • DEFAULT_OPTS="-server -Xms256m -Xmx256m -Xss128k" 
    改成 
    DEFAULT_OPTS="-server -Xms512m -Xmx512m -Xmn100m -Xss1204k"
  • 8:启动amoeba
  • nohup /usr/local/amoeba/bin/amoeba start 2>&1 >/dev/null &
 
 
 
 

本文出自 “Newbie's World” 博客,请务必保留此出处http://skyson.blog.51cto.com/2497647/623449