Mysql讀寫分離-amoeba
轉載自http://www.cnblogs.com/liuyisai/p/6009379.html
Amoeba主配置文件($AMOEBA_HOME/conf/amoeba.xml)，用來配置Amoeba服務的基本參數，如Amoeba主機地址、端口、認證方式、用於連接的用戶名、密碼、線程數、超時時間、其他配置文件的位置等。
數據庫服務器配置文件($AMOEBA_HOME/conf/dbServers.xml)，用來存儲和配置Amoeba所代理的數據庫服務器的信息，如:主機IP、端口、用戶名、密碼等。
切分規則配置文件($AMOEBA_HOME/conf/rule.xml)，用來配置切分規則。
數據庫函數配置文件($AMOEBA_HOME/conf/functionMap.xml)，用來配置數據庫函數的處理方法，Amoeba將使用該配置文件中的方法解析數據庫函數。
切分規則函數配置文件($AMOEBA_HOME/conf/ruleFunctionMap.xml)，用來配置切分規則中使用的用戶自定義函數的處理方法。
訪問規則配置文件($AMOEBA_HOME/conf/access_list.conf)，用來授權或禁止某些服務器IP訪問Amoeba。
日誌規格配置文件($AMOEBA_HOME/conf/log4j.xml)，用來配置Amoeba輸出日誌的級別和方式。
環境：
主： SQL-Master 192.168.200.101/24
從： SQL-Slave 192.168.200.102/24,192.168.200.103/24
mysql-amoeba 192.168.200.106/24
JAVA環境配置：http://liang-yao.cnblogs.com/p/8448739.html
Amoeba下載地址：https://sourceforge.net/projects/amoeba/files/
Amoeba解壓即安裝
[root@local6 amoeba]# ll
總用量 8
drwxrwxrwx 2 root root 63 7月 5 2013 benchmark
drwxrwxrwx 2 root root 166 7月 5 2013 bin
drwxrwxrwx 2 root root 243 7月 5 2013 conf
-rwxrwxrwx 1 root root 728 7月 5 2013 jvm.properties
drwxrwxrwx 2 root root 4096 7月 5 2013 lib
[root@local6 amoeba]# pwd
/usr/local/amoeba
配置讀寫分離僅需配置dbServers.xml和amoeba.xml
vim conf/dbServers.xml
<?xml version="1.0" encoding="gbk"?>
<!DOCTYPE amoeba:dbServers SYSTEM "dbserver.dtd">
<amoeba:dbServers xmlns:amoeba="http://amoeba.meidusa.com/">
<!--
Each dbServer needs to be configured into a Pool,
If you need to configure multiple dbServer with load balancing that can be simplified by the following configuration:
add attribute with name virtual = "true" in dbServer, but the configuration does not allow the element with name factoryConfig
such as ‘multiPool‘ dbServer
-->
<dbServer name="abstractServer" abstractive="true">
<factoryConfig class="com.meidusa.amoeba.mysql.net.MysqlServerConnectionFactory">
<property name="connectionManager">${defaultManager}</property>
<property name="sendBufferSize">64</property>
<property name="receiveBufferSize">128</property>
<!-- mysql port -->
<property name="port">3306</property>
#Amoeba要連接的mysql數據庫端口
<!-- mysql schema -->
<property name="schema">test</property>
#設置缺省的數據庫，當連接amoeba時，操作表必須顯式的指定數據庫名，即采用dbname.tablename的方式，不支持 use dbname指定缺省庫，因為操作會調度到各個後端dbserver
<!-- mysql user -->
<property name="user">test</property>
#設置amoeba連接後端數據庫服務器的賬號和密碼，因此需要在所有後端數據庫上創建該用戶，並授權amoeba服務器可連接
<property name="password">123456</property>
</factoryConfig>
<poolConfig class="com.meidusa.toolkit.common.poolable.PoolableObjectPool">
<property name="maxActive">500</property> #最大連接數
<property name="maxIdle">500</property>#最大空閑連接數
<property name="minIdle">1</property>#最小空閑連接
<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>
#定義一個後端可寫的dbserver名稱
<dbServer name="writedb" parent="abstractServer">
<factoryConfig>
<!-- mysql ip -->
<property name="ipAddress">192.168.200.101</property>
</factoryConfig># 後端可寫dbserver
</dbServer>
#定義後端可讀dbserver
<dbServer name="slave1" parent="abstractServer">
<factoryConfig>
<!-- mysql ip -->
<property name="ipAddress">192.168.200.102</property>
</factoryConfig>
</dbServer>
<dbServer name="slave2" parent="abstractServer">
<factoryConfig>
<!-- mysql ip -->
<property name="ipAddress">192.168.200.103</property>
</factoryConfig>
</dbServer>
#定義一個虛擬dbserver，將只讀dbserver加入此組
<dbServer name="slaves" 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 -->#調度算法，1表示復制均衡，2表示權重，3表示HA
<property name="poolNames">slave1,slave2</property>
</poolConfig>#slaves組成員
</dbServer>
</amoeba:dbServers>
vim conf/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">8066</property>
#監聽端口
<!-- bind ipAddress -->
<property name="ipAddress">192.168.200.106</property>
#監聽地址
<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">user123</property>
#客戶端連接amoeba所需賬號密碼
<property name="password">123456</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">writedb</property>
#amoeba默認池
<property name="writePool">writedb</property>#取消註釋，定義讀寫池
<property name="readPool">slaves</property>
<property name="needParse">true</property>
</queryRouter>
</amoeba:configuration>
vim jvm.properties
32 JVM_OPTIONS="-server -Xms256m -Xmx1024m -Xss256k -XX:PermSize=16m -XX:MaxPermSize=96m" #Xss256K 小於256K無法正常啟動
主從數據庫配置
mysql -u root -p123456
創建用戶test設置密碼123456
MariaDB [(none)]> grant all on *.* to buck@‘127.0.0.1‘ identified by "hello";
MariaDB [(none)]> use mysql;
修改host權限
MariaDB [(none)]> update user set host = ‘%‘ where user = ‘test‘;
MariaDB [mysql]> select user, host from user;
+------+---------------+
| user | host |
+------+---------------+
| test | % |
刷新數據庫
MariaDB [mysql]> flush privileges;
啟動：
chmod 777 logs
./bin/launcher
ss -ntlu
測試
mysql -uuser123 -p123456 -h192.168.200.106 -P8066
斷開mysql-master網絡，發現不能寫入，僅能查詢
MySQL [test]> use test;
MySQL [test]> select * from test2
斷開mysql-slave1、2網絡，發現不能查詢，僅能寫入
Mysql讀寫分離-amoeba