MySql configuration management: How to quickly configure the MySQL server

With the development of the Internet, MySQL database has become the database of choice for most website back-end developers. However, as the amount of data increases and traffic increases, many developers will encounter performance problems in the MySQL server. To address this problem, we need to configure and manage the MySQL server to improve the performance of the MySQL server.

This article will introduce some basic MySQL server configuration management knowledge and provide you with tips for quickly configuring the MySQL server.

Step One: Install MySQL

First, we need to install the binary file package of the MySQL server. There are many ways to install MySQL, you can use apt-get, yum, binary file package, etc. Here we use the binary file package to install MySQL as an example:

Download the MySQL binary file package:

wget https://dev.mysql.com/get/mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz

Decompress the MySQL binary file package:

tar -zxvf mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz

will be decompressed Move the MySQL file to the specified directory:

mv mysql-5.7.21-linux-glibc2.12-x86_64 /usr/local/mysql

Configure MySQL environment variables:

export PATH=$PATH:/usr/local/mysql/bin

Start the MySQL service:

/usr/local/mysql/bin/mysqld_safe &

At this point, we have successfully installed MySQL and started it successfully MySQL server.

Step 2: MySQL server configuration file management

The commonly used configuration files of MySQL server are as follows:

/etc/my.cnf             # MySQL的主配置文件
/etc/mysql/my.cnf       # Debian的MySQL配置文件
/var/lib/mysql/my.cnf   # 默认MySQL数据存放目录下的MySQL配置文件

Under normal circumstances, we directly Modify the configuration file /etc/my.cnf.

Can be modified using vi, nano, gedit and other editors. The basic format is as follows:

[mysqld]
port=3306
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock

Here we introduce a technique for modifying the MySQL configuration file, that is, using the mysql_tzinfo_to_sql tool to generate timezone data:

mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root -p mysql

This command will generate a file named mysql_tzinfo_to_sql and import the generated timezone data into the MySQL server. This way we don't need to manually configure the timezone.

Step 3: Optimize MySQL server configuration

The optimization of MySQL server performance is mainly reflected in three aspects, namely hardware optimization, database design optimization and MySQL server configuration optimization.

Here, we mainly introduce some methods of MySQL server configuration optimization.

1. Modify the max_connections parameter: The max_connections parameter refers to the maximum number of client connections that the MySQL server can accept at the same time. If the max_connections parameter is set too small, the MySQL server may not be able to handle peak requests normally. We can optimize the max_connections parameter from the following aspects:

• Use the SHOW PROCESSLIST command to view the current number of connections.
• Adjust the max_connections parameter, such as setting max_connections to 1000, to support more connections.
• If you need higher concurrent processing capabilities, you can use MySQL cluster technology.

2. Modify the innodb_buffer_pool_size parameter: the innodb_buffer_pool_size parameter refers to the buffer pool size used by the InnoDB storage engine. The setting of this parameter has a great impact on the performance of MySQL. If the innodb_buffer_pool_size parameter is set too small, it will cause the MySQL server to frequently perform disk I/O operations, thus affecting the performance of MySQL.

We can optimize the innodb_buffer_pool_size parameter from the following aspects:

• Use the SHOW GLOBAL STATUS command to view the usage of the InnoDB storage engine buffer pool.
• Set a reasonable innodb_buffer_pool_size value based on the server hardware configuration.
• Use MySQL's caching technology to reduce disk I/O operations.

3. Modify the query_cache_size parameter: The query_cache_size parameter refers to the size of the MySQL server cache query result set. The setting of this parameter has a great impact on the query performance of the MySQL server. If the query_cache_size parameter is set too small, the MySQL server will not be able to fully utilize the cache, thus affecting query performance.

We can optimize the query_cache_size parameter from the following aspects:

• Use the SHOW GLOBAL STATUS command to view the usage of the MySQL server cache query result set.
• Set a reasonable query_cache_size value based on the server hardware configuration.
• Use MySQL's query optimization technology to improve query efficiency.

In general, configuration management of the MySQL server is the basis for improving the performance of the MySQL server. By adjusting and optimizing the basic configuration of the MySQL server, we can fundamentally improve the performance of the MySQL server and achieve better database service results.

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