MySQL on RHEL9 Configuration File Directory: Main configuration file: /etc/my.cnf Initial Login: The default root password is stored in /root/readme. To view the password: cat /root/readme Example login command: mysql -uroot -p Service Management: Start MySQL: systemctl start mysqld Stop MySQL: systemctl stop mysqld Restart MySQL: systemctl restart mysqld Check service status: systemctl status mysqld Required Ports: Default MySQL port: TCP-3306 Security & Remote Access: By default, MySQL binds to 127.0.0.1 (localhost). To allow remote connections, modify /etc/my.cnf,Add or update: 'bind-address = 0.0.0.0',Then restart MySQL: systemctl restart mysqld Data Directory: Default location: /usr/local/mysqldata Logs & Error Files: Error logs: /usr/local/mysqldata/localhost.localdomain.err MySQL is an open-source relational database that efficiently stores, retrieves, and manages structured data. It supports transactions, ACID compliance, and high availability, making it suitable for applications like e-commerce, content management systems (CMS), and data analytics.