How To
Best Kubernetes Books for 2026
Kubernetes moves fast. The book you bought 18 months ago might still cover the fundamentals, but it probably…
Category
Linux Tutorials
Ubuntu
Switch Default Java Version on Ubuntu / Debian
When multiple Java versions are installed on the same system, only one can be the default. The wrong…
Rocky Linux
Install Java 25 (JDK 25) on Rocky Linux 10 / AlmaLinux 10
Rocky Linux 10 and AlmaLinux 10 ship OpenJDK 25 and OpenJDK 21 in their default AppStream repository. Both…
Databases
PostgreSQL vs MySQL vs MariaDB: Performance Benchmark (2026)
PostgreSQL, MySQL, and MariaDB handle the same SQL, but their storage engines, query optimizers, and concurrency models produce…
Ubuntu
Install Java 25 (JDK 25) on Ubuntu 24.04 / 22.04
JDK 25 landed as the next long-term support release with eight years of patches ahead of it (through…
How To
Nginx vs Apache vs Caddy vs HAProxy: Performance Benchmark (2026)
Picking a web server or reverse proxy used to be a two-horse race between Nginx and Apache. Caddy…
AlmaLinux
Install Podman and Buildah on Rocky Linux 10 / AlmaLinux 10
If you manage Rocky Linux or AlmaLinux servers, Podman is already waiting for you in the default repos.…
Docker
Run Docker and Podman Containers as systemd Services
Containers are stateless by design. Kill one, and it stays dead until something brings it back. That “something”…
Debian
Install Java 25 (JDK 25) on Debian 13 / Debian 12
JDK 25 is the new long-term support release, which means it gets security patches and bug fixes until…
How To
Filter Systemd Logs with journalctl (Practical Examples)
When something breaks at 3 AM, journalctl is the first command you reach for. It queries the systemd…
Linux Tutorials
Install PowerDNS and PowerDNS-Admin on Ubuntu 24.04
PowerDNS Authoritative Server is one of the more capable open-source DNS servers available, particularly when you need database-backed…
Arch Linux
Pacman and Yay Cheat Sheet for Arch Linux
Every Arch Linux user lives in the terminal, and pacman is the command you type most. This cheat…