Configuring MySQL
Let’s look at some important things for setting up MySQL after you get it on your computer. You can change the settings to match what you need.
MySQL has many settings you can change. Some are really important. Others are just to make small changes. The main settings are about user permissions. You decide who gets access.
Accessing the MySQL Configuration File:
The primary configuration file for MySQL is typically located at /etc/mysql/my.cnf. You’ll need administrative privileges (sudo) to edit this file. It’s recommended to make a backup of the original configuration file before any modifications. Here’s how to access and backup the file:
mysql -u root -p
Creating a User (Optional):
Setting up a special user account is better than using the main user. The main user should not do daily tasks. You can make a new user with certain rights for your apps. Here’s an example:
CREATE USER 'myusername'@'localhost' IDENTIFIED BY 'strong_password';
Replace ‘myusername‘ with your desired username and ‘strong_password‘ with a secure password.
Granting Privileges (Optional):
Now, give them the right to do stuff with the database. Here’s how you can let them do everything for a database called ‘mydatabase‘.
GRANT ALL PRIVILEGES ON mydatabase.* TO 'myusername'@'localhost';
Replace ‘myusername‘ with your desired username
Flushing Privileges:
After making changes to user permissions, it’s essential to flush the privileges table for the changes to take effect. Flushing the privileges table is a vital process that ensures the changes you have made are properly implemented and activated.
FLUSH PRIVILEGES;
You can create databases to organize your data.
REATE DATABASE mydatabase;
By following these steps and consulting the provided resources, you can configure MySQL in Ubuntu 20.04 to suit your specific requirements. Remember to prioritize security by using strong passwords and appropriate user permissions.
Security Considerations
- Make passwords different for each user. Even the main user must have a tough password.
- Only give users the powers they need to do their job. Giving full control is bad unless it’s really needed.
- Remote access is off by default to keep things safe. Turning it on makes hacking easier. If needed, only allow remote access through firewalls. And only give limited user powers.
Testing MySQL
There are many ways to check if MySQL works well. Here are some simple methods: Create a table. Put some data in it. View that data. Delete that table. Create a new table.
Using the MySQL command line
1. Make a new database:
CREATE DATABASE test_db;
2. Pick a database to work with:
USE test_db;
3. Create a table to store data:
You can create rows and columns using a command like:
CREATE TABLE users (
id INT PRIMARY KEY AUTO_INCREMENT,
username VARCHAR(255) NOT NULL,
email VARCHAR(255) UNIQUE
);
This creates a table named “users” to store user information.
You can use easy ways first to check MySQL. Then, you can try harder ways when you get used to it.
Installing MySQL on Ubuntu 20.04
MySQL is a database system used to store and manage information. It is free for anyone to use and can be easily installed on Ubuntu 20.04, which is a popular operating system for computers. Installing MySQL on Ubuntu 20.04 is a straightforward process that allows you to set up a powerful relational database management system (RDBMS) on your Linux server, and this guide will walk you through the steps to get your MySQL database up and running smoothly. Having a MySQL database can be incredibly useful for many different types of applications and websites. MySQL is one of the most popular open-source database systems, known for its reliability, scalability, and ease of use.
Concepts related to the topic
- MySQL: MySQL is a widely used open-source relational database management system.
- Ubuntu 20.04: Ubuntu 20.04 is a Linux OS. It has an easy interface and good software tools. Version 20.04 is long-term supported. This means it’s stable for many years.
- MySQL Server: MySQL Server is the part that keeps and manages databases. It listens for people connecting and works through queries as per SQL standards. MySQL Server stores data in databases. It waits for connections from people. When someone connects, they can ask queries about data. MySQL Server follows SQL to answer those queries.