The very basics of MariaDB (the MySQL fork used in RedHat certification exams). 99% of this also applies to 'regular' MySQL and non-RHEL Linux distributions. 0:30 Quick 3-minute intro to MySQL and MariaDB 2:50 Install MariaDB Package with yum 3:05 MariaDB service management under systemd 3:55 (usually not required) mysql_install_db script to initialize the database 4:50 secure your MySQL installation with the mysql_secure_installation script - ABSOLUTELY CRITICAL! 7:09 The main MariaDB logfile 7:38 The MariaDB unit file (for systemd service management) 9:10 The MySQL service TCP port 9:39 The main MySQL configuration file (/etc/my.cnf) 10:51 MySQL client basics (connecting to the MySQL service) 12:15 Basic MySQL shell commands (show databases, use a database, show mysql tables in a database) 13:27 Super-basic SELECT query, slow query log RHCE Exam Extras: 14:27 - running mysql on a nonstandard port 15:46 - add a permanent firewall rule to allow the custom port 16:33 - update SELinux to allow mysqld_port_t to use that custom port (restart mysql when you're done) Notes on MySQL/MariaDB compatibility: https://mariadb.com/kb/en/library/mariadb-vs-mysql-compatibility/ (it's a drop-in replacment). ########################## Step-by-step, project-based Linux course for beginners: https://www.udemy.com/course/hands-on-linux-self-hosted-wordpress-for-linux-beginners/?referralCode=19C0A7DEE2FD53C9C09D Free Linux Sysadmin Course Playlist:    • The Linux Basics Course: Beginner to ...   DigitalOcean referral link: https://m.do.co/c/0380a1db56a6 Patreon: https://www.patreon.com/tutorialinux Official Site & e-mail list: https://tutorialinux.com/ Twitter: https://twitter.com/tutorialinux Facebook: https://www.facebook.com/tutorialinux Podcast: http://kernelpanicpodcast.com/