Learn DevOps, Kubernetes & AWS — Simplified
Practical tutorials, deep dives, and battle-tested guides for engineers who build and ship in the cloud.
By KP | TZoneLabs | DevOps & Cloud Engineering A PodDisruptionBudget doesn’t protect your application — it protects a number. That’s why a routine EKS managed node group upgrade recently stalled on us for 40 minutes and paged on-call at 2am, even though our minAvailable: 2 config was textbook. The PDB was doing exactly what … Read more
By KP | TZoneLabs | DevOps & Cloud Engineering Most engineers size EKS nodes by CPU and memory. We did too — until one day a pod sat in Pending, the node had plenty of compute free, and the events said something about failing to assign an IP. That was our introduction to the quietest … Read more
kubectl debug node replaces SSH, bastions, and open ports for Kubernetes node access. Learn the exact commands, security benefits, debugging profiles, and real-world walkthrough.
Kubernetes pod eviction silently killed 60% of our production pods. Learn how QoS classes work, how to find at-risk pods, and how to fix and enforce resource requests permanently.
By KP | TZoneLabs | DevOps & Cloud Engineering Here is something nobody tells you when you start in DevOps: the error message is almost never the problem. It is just the messenger. A pod crashes — you blame the application. An API times out — you blame the network. A deployment fails — you … Read more
By KP | TZoneLabs | DevOps & Cloud Engineering We were in the middle of a production scaling event when everything went quiet — in the worst way possible. No crash. No alert. No obvious Kubernetes error. Just pods stuck in Pending, GitHub Actions deployment jobs timing out, and the entire team staring at dashboards … Read more
The Kubernetes API is a critical component of the Kubernetes ecosystem, enabling users to interact with the Kubernetes system. It serves as an interface through which different parts of the Kubernetes cluster communicate, making it easier to deploy, manage, and scale applications efficiently. The API is RESTful, meaning it follows the principles of Representational State Transfer (REST), … Read more
Organizations managing sensitive applications must ensure secure communication to maintain data privacy, even within internal services. Achieving end-to-end encryption on Amazon EKS in a Kubernetes environment comes with its own set of challenges:
Ever feel the pain of constantly copying and pasting short-lived AWS credentials? It’s time-consuming, error-prone, and frankly, annoying. But fear not, there’s a better way! This guide will show you how to set up AWS Single Sign-On (SSO), a magical tool that lets you access your AWS accounts with just a single login, saving you … Read more
What is Serverless? To understand what AWS Lambda is, let’s first learn about serverless architecture. Serverless architecture is a way to build and use apps and services without worrying about handling infrastructure. Even though your app still runs on servers, you don’t have to deal with setting up the server’s operating system, fixing issues, or … Read more