The cluster is broken. Fix the plumbing to bring the app to life (you'll know it's working when Rawkode taps his watch at you), then ship the v2 image to unlock his victory dance.

1/4 Secret management is a critical yet often overlooked aspect of DevOps. (Raise your hand if you've ever intentionally committed secrets to a Git repository.) This is why I've begun creating a series of educational content on the subject.

In this brief tutorial we'll explore the idea that Docker containers are just processes, from the perspective of the operating system. Based on this Securitylabs blog post https://securitylabs.datadog...

SSH port forwarding explained in a clean and visual way. How to use local and remote port forwarding. What sshd settings may need to be adjusted. How to memorize the right flags.

This exercise tests your ability to safely upgrade a multi-node Kubernetes cluster from version 1.30 to 1.31 following the standard upgrade procedure.

Start a Linux process and limit its CPU and memory usage with cgroups.

What are these distroless images, really? Why are they needed? What's the difference between a container image built from a distroless base and a container image built from scratch? Let's take a deepe...

While "FROM scratch" containers may seem functional, they often lack essential components that programs expect to find in their execution environment. Discover the most common pitfalls of building con...

Practical DevOps problems for all skill levels and interests

Learn how to build a secure, lightweight, and production-ready Node.js application image in this hands-on challenge.

Learn how to build smaller, more secure Docker container images using Multi-Stage Builds. This guide explains common sources of image bloat, best practices for slimming down production images, and pra...