MySQL is a popular open-source relational database management system that is widely used for web applications. In this article, we will provide a step-by-step guide on how to install MySQL on CentOS 7.
Introduction to MySQL
MySQL is a popular open-source relational database management system that is used to manage and store data in a relational format. It is commonly used for web applications, and it is compatible with many different operating systems.
Prerequisites
Before we begin with the installation, ensure that you have the following:
A CentOS 7 server with root access.
A non-root user with sudo privileges.
A stable internet connection.
Step 1: Update the System
The first step is to update the system to ensure that you have the latest packages and security updates. Use the following command to update the system:
sudo yum update -y
Step 2: Install the MySQL Repository
Next, you need to install the MySQL repository to get the latest version of MySQL. Use the following command to download and install the MySQL repository:
sudo yum install https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm
Step 3: Install MySQL Server
After installing the repository, you can proceed to install the MySQL server. Use the following command to install MySQL:
sudo yum install mysql-server
Step 4: Start and Enable MySQL
Once the installation is complete, start the MySQL service and enable it to start automatically on boot using the following commands:
sudo systemctl start mysqld sudo systemctl enable mysqld
Step 5: Secure MySQL Installation
By default, MySQL installation is not secure, and anyone can log in to the MySQL server without a password. To secure the installation, run the following command:
sudo mysql_secure_installation
You will be prompted to set a root password, remove anonymous users, disallow remote root login, and remove test databases.
Step 6: Verify MySQL Installation
To verify that MySQL is installed correctly, use the following command to check the MySQL service status:
sudo systemctl status mysqld
If the service is running, you can also check the MySQL version using the following command:
mysql --version
Conclusion
In conclusion, MySQL is a popular open-source relational database management system that is widely used for web applications. Installing MySQL on CentOS 7 is a straightforward process that involves updating the system, installing the MySQL repository, installing the MySQL server, starting and enabling the MySQL service, securing the installation, and verifying the installation.
FAQs
Q: How do I uninstall MySQL on CentOS 7?
To uninstall MySQL on CentOS 7, use the following command: sudo yum remove mysql-server.
Q: How do I start and stop MySQL on CentOS 7?
To start MySQL on CentOS 7, use the following command: sudo systemctl start mysqld. To stop MySQL, use the following command: sudo systemctl stop mysqld.
Q: How do I configure MySQL on CentOS 7?
To configure MySQL on CentOS 7, edit the /etc/my.cnf configuration file using a text editor, such as vi or nano.
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