Real-World DevOps Guides

Site Reliability Engineering (SRE) may sound like a fancy job title, but it’s actually one of the most practical and important roles in modern infrastructure and software teams. What is an SRE? SRE stands for Site Reliability Engineer. In simple terms, an SRE ensures that systems are reliable, scalable, and efficient. The concept was born at Google, where software engineers were tasked with running production systems using software engineering principles. ...

Who is a DevOps Engineer? If you’ve spent any time in the world of software development or operations, you’ve probably heard the term DevOps thrown around. But what does it actually mean to be a DevOps engineer? Let’s break it down in simple terms. Dev + Ops = Collaboration At its core, DevOps is a cultural and technical movement that aims to bridge the gap between development (Dev) and operations (Ops). Traditionally, developers wrote code and handed it off to system administrators to deploy and maintain it. This often led to misunderstandings, delays, and finger-pointing when something broke. ...

Site Reliability Engineering (SRE) is not just about “keeping things up” — it’s about building systems that are reliable and understandable. At the heart of this idea lies a simple but powerful toolset: the four golden signals. Let’s break them down in human terms — no jargon, just practical insights. 🚨 What Are the Golden Signals? Golden signals are the four key metrics that Google’s SRE team recommends tracking for any user-facing service: ...

SRE vs DevOps: What’s the Difference? In the world of modern infrastructure and operations, SRE (Site Reliability Engineering) and DevOps are often mentioned together. While they aim for similar goals — delivering reliable, scalable, and efficient systems — they approach these goals differently. What is DevOps? DevOps is a culture and set of practices that promotes collaboration between developers and operations teams. The goal is to automate and streamline software delivery and infrastructure changes. ...

K3s vs MicroK8s: Lightweight Kubernetes Showdown Need Kubernetes but without the heavy machinery? That’s where K3s and MicroK8s shine. Let’s break them down in a simple and friendly way. What Are They? K3s – A lightweight Kubernetes distribution by Rancher, designed for IoT, edge, and low-resource environments. MicroK8s – A snap-based Kubernetes distro from Canonical (Ubuntu), easy to install and manage. Why Use Them? Feature K3s MicroK8s Size <100MB ~200MB Install Single binary snap install microk8s Resource usage Very low Low High availability Yes (with some config) Yes (built-in clustering) OS compatibility Linux (only) Linux, Windows (some support) Add-ons Helm, Traefik (default), etc. Built-in add-ons (microk8s enable) Installation K3s: curl -sfL https://get.k3s.io | sh - MicroK8s: sudo snap install microk8s --classic Use Cases K3s: Great for edge computing, Raspberry Pi clusters, or minimal VMs. MicroK8s: Ideal for local development, CI/CD pipelines, and Ubuntu-based systems. Pros and Cons K3s Pros: ...