MySQL主从+amoeba实现读写分离

准备工作 准备3台虚拟机
10.0.0.41 （MySQL主）
10.0.0.42 （MySQL从）
10.0.0.43 amoeba 服务器
用脚本实现MySQL主从 就是有一个不好的缺点就是使用的服务器必须是干净的 只能使用一次
提前做好免密登录

#!/bin/bash
mysql_start() {
        ss -ntlp|grep -w mysqld
        if [ $? -eq 0 ]; then
                echo "MySQL服务已经开启"
        else
                systemctl restart mariadb
                if [ $? -eq 0 ]; then
                        echo "成功开启MySQL服务器"
                else
                        exit
                fi
        fi
}
install_mariadb() {
        rpm -q mariadb && rpm -q mariadb-server
        if [ $? -ne 0 ]; then
                yum -y install mariadb mariadb-server
                if [ $? -eq 0 ]; then
                        echo "安装好mysql服务"
                else
                        echo "安装MySQL服务出错"
                        exit
                fi
        fi
}
install_mariadb
mysql_start
sed -i '10a server-id=1\nlog-bin=mysql-bin\n' /etc/my.cnf
systemctl restart mariadb
mysql -e "grant all on *.* to 'tom'@'10.0.0.%' identified by '123';"
mysql -e "flush privileges;"
log_file=`mysql -e "show master status;"|awk 'NR==2{print $1}'`
log_pos=`mysql -e "show master status;"|awk 'NR==2{print $2}'`
echo "$log_file"
echo "$log_pos"
read -p "请输入master的IP地址" master_ip
read -p "请输入slave的IP地址"  slave_ip
ssh root@$slave_ip > /dev/null <<eof
yum -y install mariadb mariadb-server
sed -i '10a server-id=2\nrelay-log=mysql-relay\n' /etc/my.cnf
systemctl stop mariadb 
systemctl start mariadb
mysql -e "stop slave;"
mysql -e "change master to master_user='tom',master_password='123',master_host='$master_ip',master_log_file='$log_file',master_log_pos=$log_pos;"
mysql -e "start slave;"
mysql -e "show slave status \G;"
eof

在amoeba(10.0.0.43)的操作 提前做好免密登录
首先在MySQL主从的服务器上 给ameoba服务器授权一个可以操作读写的用户

#!/bin/bash
read -p "请输入MySQL主的IP地址" master_ip
read -p "请输入MySQL从的IP地址" slave_ip
ssh root@$master_ip > /dev/null <<eof
mysql -e "grant all on *.* to 'amoeba'@'10.0.0.%' identified by '123';"
mysql -e "flush privileges;"
eof
ssh root@$slave_ip > /dev/null <<eof
mysql -e "grant all on *.* to 'amoeba'@'10.0.0.%' identified by '123';"
mysql -e "flush privileges;"
eof

在Amoeba的服务器上安装Amoeba
1.安装jdk 版本要求1.6 提前分发过去jdk的安装包 这里是二进制包

#!/bin/bash
echo "给予权限"
cd /usr/local && chmod +x jdk-6u14-linux-x64.bin && ./jdk-6u14-linux-x64.bin
ls /usr/local/ | grep jdk1.6.0_14
if [ $? -eq 0 ]; then
        ls /usr/local/ | grep jdk1.6
        if [ $? -eq 0 ]; then
                cd /usr/local && mv jdk1.6.0_14 jdk1.6
                echo "修改成功"
        fi
fi
echo "修改环境变量"
sed -i '80a export export AMOEBA=/usr/local/amoeba\nexport JAVA_HOME=/usr/local/jdk1.6\nexport PATH=$PATH:$JAVA_HOME/bin:$AMOEBA/bin
' /etc/profile
echo "使增加的变量生效"
source /etc/profile
echo "版本"
java -version
echo "已经分发好ameoba的安装包"
ls /usr/local/ | grep amoeba
if [ $? -eq 0 ]; then
        echo "已存在"
        cd /usr/local/amoeba && tar -zxf amoeba-mysql-binary-2.1.0-RC5.tar.gz
else
        mkdir /usr/local/amoeba
        cd /usr/local/amoeba && tar -zxf amoeba-mysql-binary-2.1.0-RC5.tar.gz
fi

修改配置文件 dbServers.xml

cd /usr/local/amoeba/conf
vim dbServer.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">123456</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">10.0.0.41</property>  //MySQL主的IP地址
                </factoryConfig>
        </dbServer>
 
        <dbServer name="server2"  parent="abstractServer">
                <factoryConfig>
                        <!-- mysql ip -->
                        <property name="ipAddress">10.0.0.42</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amoeba.xml的配置文件

cd /usr/local/amoeba/conf
vim amoeba.xml

……
<property name="authenticator">
                                <bean class="com.meidusa.amoeba.mysql.server.MysqlClientAuthenticator">
 
                                        <property name="user">java</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 -ujava -p123 -h10.0.0.43 -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