yum CentOS package management linux system administration
A quick reference for Yum - the CentOS package manager.
MySQL MariaDB RDBMS system administration
Quick notes on how to enable root / admin user privileges from remote hosts.
Ubuntu Ubuntu 16.04 SSH SFTP system administration config files
How to grant users SFTP access via the /etc/ssh/sshd_config file in Ubuntu 16.04
Debian 10 Apache 2.4 Apache system administration linux PHP PHP-FPM
How to switch from Apache2 mpm_prefork to mpm_event module and setup php-fpm in Debian 10.
Apache 2.4 Apache 2 Apache mod_access_compat Apache modules system administration Apache performance tuning
Yes, in Apache2.4 the `mod_access_compat` module can safely be disabled, as long as you remove all the deprecated 'Order', 'Allow', and 'Deny' directives from your apache and vhost configs.