Amoeba新版本如何与MYSQL读写分离配置

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，可以参考pdf，因为新版的Amoeba2.10对5.1以下版本不稳定。

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/

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
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：

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，如做pdf时（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 &