[mysqld] Ubuntu 18 - Shell-Bash

Introduction

In this tutorial, we will be discussing the configuration of the MySQL server daemon (mysqld) in Ubuntu 18 using the Shell-Bash scripting language. We will explore various options and settings that can be customized to optimize the performance and security of your MySQL server. This guide aims to provide a comprehensive overview of the configuration options available in the mysqld section of the MySQL configuration file.

Prerequisites

Before we begin, please ensure that you have a working installation of MySQL server on an Ubuntu 18 machine. If you haven't installed MySQL yet, you can easily do so by running the following commands in your terminal:

sudo apt update
sudo apt install mysql-server

Configuration Options

The mysqld section in the MySQL configuration file (/etc/mysql/mysql.conf.d/mysqld.cnf) consists of several configuration options that allow you to fine-tune your MySQL server's behavior. Here are some commonly used options:

bind-address

The bind-address option specifies the IP address on which the MySQL server should listen for incoming connections. By default, it is set to 127.0.0.1, which means the server only listens on the loopback interface. If you want your server to accept connections from other machines on the network, you can change this value to the server's IP address.

bind-address = 0.0.0.0

port

The port option defines the TCP/IP port number on which the MySQL server listens for incoming connections. The default port is 3306. If you need to use a different port, you can set it as follows:

port = 3307

socket

The socket option specifies the Unix socket path used for local connections. By default, it is set to /var/run/mysqld/mysqld.sock. If you want to change the socket path, you can modify this option accordingly.

socket = /tmp/mysql.sock

max_connections

The max_connections option determines the maximum number of simultaneous connections allowed to the MySQL server. Depending on your server's resources, you can adjust this value to ensure optimal performance under heavy load.

max_connections = 500

skip_networking

The skip_networking option disables network access to the MySQL server. If you only want to allow local connections, you can enable this option and set it to 1:

skip_networking = 1

Other Options

There are many more configuration options available in the mysqld section, such as innodb_buffer_pool_size, query_cache_size, and log_error. You can refer to the MySQL documentation for a detailed explanation of each option and its possible values.

Conclusion

By customizing the [mysqld] section of the MySQL configuration file, you can optimize your MySQL server to meet your specific requirements. We have covered several commonly used options, but there are many more options available for further customization. Experimenting with different settings and monitoring the server's performance can help you fine-tune your MySQL server to achieve optimal performance and security.