Updated October 2026. I rebuilt every example in this post from scratch and ran it on Debian 13 (clang 19, libbpf 1.5, bpftool 7.5, iproute2…
Linux cheat sheet
Tag: security
FreeBSD jails are a lightweight, secure way to isolate processes and services, similar to Linux containers but older and natively integrated into the FreeBSD kernel. With jails,…
Valkey is a high-performance in-memory data store that serves as a drop-in alternative to Redis. Deploying Valkey in Kubernetes ensures scalability and easy management of…
Kubernetes has revolutionized container orchestration, enabling developers and operations teams to manage applications at scale efficiently. However, as powerful as Kubernetes is, poor implementation and…
In this guide, we’ll walk through the steps to create a Kubernetes user with restricted permissions. We will also include instructions on creating a Linux…
Full disk encryption (FDE) ensures that all data on your disk is encrypted, requiring a passphrase or key file to unlock at boot. In this…
Immutable systems, such as Fedora CoreOS, are designed for minimal changes and higher reliability. Fedora CoreOS is a Linux distribution optimized for containerized workloads, providing…
In the evolving landscape of containerization, Docker has emerged as an essential tool for developers seeking streamlined application deployment. Among the recent advancements in this…
Debugging applications running in Kubernetes can be challenging, but enabling SSH access to your containers can significantly simplify the process. This guide walks you through…
In modern DevOps practices, securing sensitive information like API tokens, passwords, and other credentials is paramount. Vault, an open-source tool developed by HashiCorp, provides a…