Introducing D.NIX – DNS and Domain Intelligence, Straight From the Source
Most DNS lookup tools on the internet today are wrappers. They pull data from the same handful of upstream APIs, slap a UI on top,…
CGNAT (Carrier-Grade NAT): The Definitive, Example-Driven Guide for Sysadmins & Network Engineers
Introduction Carrier-Grade NAT (CGNAT) is one of those technologies that quietly rewrote how the internet works, without most users realizing it. For sysadmins and network…
How to Run Different php.ini Files for Multiple Websites on Windows IIS (Complements Multi-PHP Guide)
If you’ve followed our earlier guide on running multiple PHP versions on IIS 10 with FastCGI (PHP 8.1 through 8.4), you already know how powerful…
Linux Boot Drops to Emergency Mode Because of /etc/fstab
(Rocky Linux 9/10, RHEL-family, and most systemd-based distros — vendor neutral guide) If you’ve ever rebooted a Linux server and landed on a black screen…
How to handle kdump on low-memory Linux systems
Summary On systems with low RAM (for example 1 GB), the automatic kdump configuration may reserve memory for crashkernel that your system simply does not…
Safely Move MariaDB Data Directory to /home on RHEL / Rocky / AlmaLinux 8+ (With SELinux Support)
If you’re running MariaDB on RHEL, Rocky Linux, AlmaLinux, or any other EL8+ distribution, you may eventually want to move your MariaDB data directory from…