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：解压安装包
-
[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/
- 2：进入配置目录，浏览文件
-
[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：进入主配置文件目录
-
[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
- 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
- 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>
- 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
- 需要手动增加SERVER2代码如下：
-
< dbServer name ="abstractServer" abstractive ="true" >
< factoryConfig class ="com.meidusa.amoeba.mysql.net.MysqlServerConnectionFactory" >
< property name ="manager" >${defaultManager} </ property >
< property name ="sendBufferSize" >64 </ property >
< property name ="receiveBufferSize" >128 </ property >
<!-- mysql port -->
< property name ="port" >3306 </ property >
<!-- mysql schema -->
< property name ="schema" >test </ property >
<!-- mysql user -->
< property name ="user" >root </ property >
<!-- mysql password
-->
< property name ="password" >123456 </ property >
</ factoryConfig >
< poolConfig class ="com.meidusa.amoeba.net.poolable.PoolableObjectPool" >
< property name ="maxActive" >500 </ property >
< property name ="maxIdle" >500 </ property >
< property name ="minIdle" >10 </ property >
< property name ="minEvictableIdleTimeMillis" >600000 </ property >
< property name ="timeBetweenEvictionRunsMillis" >600000 </ property >
< property name ="testOnBorrow" >true </ property >
< property name ="testWhileIdle" >true </ property >
</ poolConfig >
</ dbServer >
< dbServer name ="server1" parent ="abstractServer" >
< factoryConfig >
<!-- mysql ip -->
< property name ="ipAddress" >192.168.2.11 </ property >
</ factoryConfig >
</ dbServer >
- 最终改变成如下：
-
<? xml version ="1.0" encoding ="gbk" ?>
<!DOCTYPE amoeba:dbServers SYSTEM "dbserver.dtd">
< amoeba:dbServers xmlns:amoeba ="http://amoeba.meidusa.com/" >
<!--
Each dbServer needs to be configured into a Pool,
If you need to configure multiple dbServer with load balancing that can be simplified by the following configuration:
add attribute with name virtual = "true" in dbServer, but the configuration does not allow the element with name factoryConfig
such as 'multiPool' dbServer
-->
< dbServer name ="abstractServer" abstractive ="true" >
< factoryConfig class ="com.meidusa.amoeba.mysql.net.MysqlServerConnectionFactory" >
< property name ="manager" >${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 &
本文转自 ibelieveme 51CTO博客，原文链接：http://blog.51cto.com/skyson/623449，如需转载请自行联系原作者
