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HomeDatabaseMysql Tutorial mysql主从复制之mysql-proxy实现读写分离

本文系统Centos6.0MySQL代理是一个介于MySQL客户端和MySQL服务器之间的简单程序,可用来监视、分析或者传输他们之间的通讯。他的灵活性允许你最大限度的使用它,

本文系统Centos6.0

MySQL代理是一个介于MySQL客户端和MySQL服务器之间的简单程序,可用来监视、分析或者传输他们之间的通讯。他的灵活性允许你最大限度的使用它,香港服务器,虚拟主机,这些包括负载平衡、容错 、分析查询和修正等等。

 mysql主从复制之mysql-proxy实现读写分离

master : 192.168.182.128

slave   :192.168.182.129

mysql-proxy:192.168.182.130

1、主从服务器安装数据库;

master、slave操作:

[root@master ~]# yum install mysql mysql-devel -y

配置主从复制;

master:

vim /etc/my.cnf log-bin=mysql-bin #新增 server-id=1 #新增

slave:

vim /etc/my.cnf log-bin=mysql-bin #新增 server-id=2 #新增

master:  添加授权用户;

mysql> grant replication slave on *.* to 'leo'@'%' identified by 'leo123';

 mysql主从复制之mysql-proxy实现读写分离

slave:

mysql> change master to master_host='192.168.182.128',master_user='leo',master_password='leo123',master_log_file='mysql-bin.000001',master_log_pos=247; mysql> start slave;

查看状态:

 mysql主从复制之mysql-proxy实现读写分离

主从复制ok;

下面在mysql-proxy上配置读写分离;

[root@mysql-proxy ~]# wget [root@mysql-proxy ~]# useradd -r mysql-proxy [root@mysql-proxy ~]# tar zxvf mysql-proxy-0.8.3-linux-glibc2.3-x86-32bit.tar.gz -C /usr/local [root@mysql-proxy ~]# mv /usr/local/mysql-proxy-0.8.3-linux-glibc2.3-x86-32bit /usr/local/mysql-proxy [root@mysql-proxy ~]# export PATH=$PATH:/usr/local/mysql-proxy/bin/ [root@mysql-proxy ~]# echo "PATH=$PATH:/usr/local/mysql-proxy/bin" >> /etc/profile

这里先来介绍下mysql-proxy的相关参数;

 mysql主从复制之mysql-proxy实现读写分离

 mysql主从复制之mysql-proxy实现读写分离

--help-all :获取全部帮助信息; --proxy-address=host:port :代理服务监听的地址和端口; --admin-address=host:port :管理模块监听的地址和端口; --proxy-backend-addresses=host:port :后端mysql服务器的地址和端口; --proxy-read-only-backend-addresses=host:port :后端只读mysql服务器的地址和端口; --proxy-lua-script=file_name :完成mysql代理功能的Lua脚本; --daemon :以守护进程模式启动mysql-proxy; --keepalive :在mysql-proxy崩溃时尝试重启之; --log-file=/path/to/log_file_name :日志文件名称; --log-level=level :日志级别; --log-use-syslog :基于syslog记录日志; --plugins=plugin:在mysql-proxy启动时加载的插件; --user=user_name :运行mysql-proxy进程的用户; --defaults-file=/path/to/conf_file_name : 默认使用的配置文件路径;其配置段使用[mysql-proxy]标识; --proxy-skip-profiling : 禁用profile; --pid-file=/path/to/pid_file_name :进程文件名;

下面我们启动下:

首先在master\slave上创建用来远程的测试用户

master:

mysql> grant all on *.* to root@'%' identified by 'root123';

slave上就不操作了;我配置mysql库也同步;所以无需多余操作;

开始启动:

[root@mysql-proxy ~]# mysql-proxy --daemon --log-level=debug --user=mysql-proxy --keepalive --log-file=/var/log/mysql-proxy.log --plugins="proxy" --proxy-backend-addresses="192.168.182.128:3306" --proxy-read-only-backend-addresses="192.168.182.129:3306" --proxy-lua-script="/usr/local/mysql-proxy/share/doc/mysql-proxy/rw-splitting.lua" --plugins=admin --admin-username="admin" --admin-password="admin" --admin-lua-script="/usr/local/mysql-proxy/lib/mysql-proxy/lua/admin.lua"

查看相关信息:


495进程是mysql-proxy启动该进程

root是keepalive在起作用;进程崩溃时尝试重启;这也是mysql-proxy新的特性;


4040是proxy端口;4041是admin端口;也就是管理

下面进行测试了;

开几个终端;

 mysql主从复制之mysql-proxy实现读写分离

登录admin查看

 mysql主从复制之mysql-proxy实现读写分离

因为rw-splitting.lua脚本默认有4个链接才启用分离;所以多开启几个终端;多测试几下;你也可以去修改里面的相关值;

 mysql主从复制之mysql-proxy实现读写分离

出现该state;分离成功;


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