The RHCSA (EX200) is the most recognized Linux certification in enterprise environments. It validates that you can perform…
CompTIA Security+ (SY0-701) is the entry-level security certification that most IT departments recognize. The exam was overhauled with…
Kubernetes moves fast. The book you bought 18 months ago might still cover the fundamentals, but it probably…
When multiple Java versions are installed on the same system, only one can be the default. The wrong…
PostgreSQL, MySQL, and MariaDB handle the same SQL, but their storage engines, query optimizers, and concurrency models produce…
Picking a web server or reverse proxy used to be a two-horse race between Nginx and Apache. Caddy…
If you manage Rocky Linux or AlmaLinux servers, Podman is already waiting for you in the default repos.…
PowerDNS Authoritative Server is one of the more capable open-source DNS servers available, particularly when you need database-backed…
Every Arch Linux user lives in the terminal, and pacman is the command you type most. This cheat…
Running a full Kubernetes cluster just to test a deployment is overkill for most development workflows. Minikube spins…
Systemd journal collects logs from the kernel, services, and applications into a structured binary format. By default on…
DNS is one of those services that works perfectly until it doesn’t, and when it breaks, everything breaks.…
