amoeba 实现读写分离(借鉴)

1.准备三台服务器我的是centos7版本的

做MySQL的主从状态可以参考

https://www.cnblogs.com/chenxiaodou/articles/11993283.html

在MySQL的主从的服务器上给amoeba服务器授权一个可以操作读写的用户

grant all on *.* to \'amoeba\'@\'192.168.18.%\' identified by \'123\';
flush privileges;　　

在Amoeba的服务器上安装Amoeba

1.安装jdk版本要安装1.6的版本

将JDK的二进制包安装在此路径下cd /usr/local
给予权限

chmod +x  jdk-6u14-linux-x64.bin
在当前路径下开始执行
./ jdk-6u14-linux-x64.bin

一直按回车 直到遇见让你输入yes or no  输入yes即可回车
更改jdk安装目录的名字
 

mv  jdk1.6.0_14   jdk1.6
 
修改环境变量  在末尾加入以下内容

vim /etc/profile
------------------------------------------------------------

export AMOEBA=/usr/local/amoeba

export JAVA_HOME=/usr/local/jdk1.6

export PATH=$PATH:$JAVA_HOME/bin:$AMOEBA/bin
------------------------------------------------------------
使增加的变量生效

source /etc/profile　

　下载Ameoba的安装包

cd /usr/local

wget http://nchc.dl.sourceforge.net/project/amoeba/Amoeba%20for%20mysql/2.x/amoeba-mysql-binary-2.1.0-RC5.tar.gz　

为Amoeba创建安装目录

mkdir /usr/local/amoeba

cd /usr/local/amoeba
在当前路径下下载amoeba

wget http://nchc.dl.sourceforge.net/project/amoeba/Amoeba%20for%20mysql/2.x/amoeba-mysql-binary-2.1.0-RC5.tar.gz
解压Ameoba的安装包

tar -zxf amoeba-mysql-binary-2.1.0-RC5.tar.gz

配置文件dbServers.xml

cd /usr/local/ameoba/conf
vim dbServers.xml
-----------------------------------------------------------------------------------------
……

    <!-- mysql port -->

    <property name="port">3306</property>
 
     <!-- mysql schema -->

    <property name="schema">test</property>
 
     <!-- mysql user -->

     <property name="user">amoeba</property>  //MySQL主从中给予权限的用户
 
     <!--  mysql password-->

     <property name="password">123</property>  //MySQL主从中给予权限的用户的密码

            ……

    <dbServer name="server1"  parent="abstractServer">

                <factoryConfig>

                        <!-- mysql ip -->

                        <property name="ipAddress">192.168.18.141</property>  //MySQL主的IP地址

                </factoryConfig>

        </dbServer>
 
        <dbServer name="server2"  parent="abstractServer">

                <factoryConfig>

                        <!-- mysql ip -->

                        <property name="ipAddress">192.168.18.142</property>   //MySQL从的IP地址

                </factoryConfig>

        </dbServer>

        <dbServer name="slave" 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">server2</property>

                </poolConfig>

        </dbServer>

　编辑ameoba,.xml文件

cd /usr/local/ameoba/conf
vim ameoba.xml
----------------------------------------------------------------------------------
……

<property name="authenticator">

                                <bean class="com.meidusa.amoeba.mysql.server.MysqlClientAuthenticator">
 
                                        <property name="user">jave</property>
 
                                        <property name="password">123</property>
 
                                        <property name="filter">

                                                <bean class="com.meidusa.amoeba.server.IPAccessController">

                                                        <property name="ipFile">${amoeba.home}/conf/access_list.conf</property>

                                                </bean>

                                        </property>

                                </bean>

                        </property>
……

<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">server1</property>
 
                <property name="writePool">server1</property>

                <property name="readPool">slave</property>

                <property name="needParse">true</property>

        </queryRouter>
 
--------------------------------------------------------------------------------

　　启动amoeba

cd /usr/local/amoeba/bin

./amoeba start  出现以下字样

　表示启动成功　

把Amoeba的终端再开启一台

关闭防火墙 SELinux 安装数据库

systemctl stop firewalld
setenforce 0

yum -y install mariadb mariadb-server

登录amoeba测试读写分离效果

mysql -ujave -p123 -h192.168.189.167 -P8066
create database ceshi charset utf8;
可以在MySQL主从数据库中查看是否存在这个数据库
在从的MySQL数据库中停掉从的同步
stop slave;
在amoeba的服务器上再创建一个数据库
这时再分别去主从数据库上查看 只有主的可以看到刚刚创建的数据库 而从上看不到 这样就实现了读写分离