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。
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';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:
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;
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;
登录admin查看
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;
出现该state;分离成功;
本文出自 “Coffee_蓝山” 博客,请务必保留此出处
,虚拟主机
Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

MySQL is an open source relational database management system, mainly used to store and retrieve data quickly and reliably. Its working principle includes client requests, query resolution, execution of queries and return results. Examples of usage include creating tables, inserting and querying data, and advanced features such as JOIN operations. Common errors involve SQL syntax, data types, and permissions, and optimization suggestions include the use of indexes, optimized queries, and partitioning of tables.

MySQL's position in databases and programming is very important. It is an open source relational database management system that is widely used in various application scenarios. 1) MySQL provides efficient data storage, organization and retrieval functions, supporting Web, mobile and enterprise-level systems. 2) It uses a client-server architecture, supports multiple storage engines and index optimization. 3) Basic usages include creating tables and inserting data, and advanced usages involve multi-table JOINs and complex queries. 4) Frequently asked questions such as SQL syntax errors and performance issues can be debugged through the EXPLAIN command and slow query log. 5) Performance optimization methods include rational use of indexes, optimized query and use of caches. Best practices include using transactions and PreparedStatemen

Apache connects to a database requires the following steps: Install the database driver. Configure the web.xml file to create a connection pool. Create a JDBC data source and specify the connection settings. Use the JDBC API to access the database from Java code, including getting connections, creating statements, binding parameters, executing queries or updates, and processing results.

MySQL is chosen for its performance, reliability, ease of use, and community support. 1.MySQL provides efficient data storage and retrieval functions, supporting multiple data types and advanced query operations. 2. Adopt client-server architecture and multiple storage engines to support transaction and query optimization. 3. Easy to use, supports a variety of operating systems and programming languages. 4. Have strong community support and provide rich resources and solutions.

The process of starting MySQL in Docker consists of the following steps: Pull the MySQL image to create and start the container, set the root user password, and map the port verification connection Create the database and the user grants all permissions to the database

The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.

Laravel is a PHP framework for easy building of web applications. It provides a range of powerful features including: Installation: Install the Laravel CLI globally with Composer and create applications in the project directory. Routing: Define the relationship between the URL and the handler in routes/web.php. View: Create a view in resources/views to render the application's interface. Database Integration: Provides out-of-the-box integration with databases such as MySQL and uses migration to create and modify tables. Model and Controller: The model represents the database entity and the controller processes HTTP requests.

The key to installing MySQL elegantly is to add the official MySQL repository. The specific steps are as follows: Download the MySQL official GPG key to prevent phishing attacks. Add MySQL repository file: rpm -Uvh https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm Update yum repository cache: yum update installation MySQL: yum install mysql-server startup MySQL service: systemctl start mysqld set up booting
