./simple_playbooks/newuser.yml - Used to create a new user on a remote server and enable passwordless authentication.
./simple_playbooks/time_and_upgrade.yml - Used to set the time on the remote server, then upgrade the packages on the remote server (||| to yum update).
./simple_playbooks/change_single_hostname.yml - Change the hostname permanently on a remote server.
./simple_playbooks/install_apache.yml - Install Apache (httpd) webserver on a remote server.
./simple_playbooks/install_mysql.yml - Install MariaDB on a remote server.
./simple_playbooks/mysql_secure_installation - To simulate mysql_secure_installation on a remote server.