Linux for Beginners

Linux Control Groups (cgroups V2): Limiting CPU And Memory For Production Workloads

If you're running production workloads without cgroup constraints, you're one runaway process away from a bad day. Here's everything you need to configure...

Alpine Linux apk Reference: Package Management, Repositories, and System Administration

A complete reference for Alpine Linux's apk package manager — adding packages, managing repositories, pinning versions, building custom packages, and running Alpine as a minimal server OS.

Alpine Linux for Docker: Building Minimal, Secure Container Images

How to use Alpine Linux as a Docker base image effectively — understanding musl libc compatibility, multi-stage builds, layer optimization, and the security trade-offs versus glibc-based distributions.

Kubernetes

Container Orchestration

Open-source container orchestration platform for automating deployment, scaling, and management of containerized applications. The de facto standard for running production workloads at scale.

Docker

Containers

Platform for building, shipping, and running applications in containers. Docker pioneered the container revolution and remains the most popular container toolchain for development workflows.

Terraform

Infrastructure as Code

Infrastructure as Code tool by HashiCorp that lets you define cloud and on-premises resources in human-readable configuration files. Supports 3,000+ providers across every major cloud.

How fast can you type real DevOps commands? Race against the clock in a terminal-themed typing challenge with kubectl, Docker, Terraform, and more.

Guess the DevOps tool from progressive clues. Prometheus, Terraform, ArgoCD, and 30+ more. Fewer clues needed = higher score.

Do you know what CIDR, RBAC, SRE, and MTTR stand for? 50+ acronyms across networking, security, cloud, containers, and more with fun facts.