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Tutorials, guides, and insights on DevOps, SRE, and Cloud technologies.

DevOps Is Not a Tool — Culture, CALMS, and the Three Ways

DevOps is a culture shift, not a toolchain. Learn the origin story, CALMS framework, The Three Ways, anti-patterns to avoid, and how DevOps compares to SRE and Platform Engineering.

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Docker Images Explained — Layers, Caching, and Why Size Matters

Understand how Docker images work under the hood — layers, build caching, base image selection, and practical techniques to keep your images lean and fast.

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Kubernetes Pods — Init Containers, Sidecars, and Pod Lifecycle

Go beyond basic pods. Learn multi-container patterns like sidecars and init containers, understand pod lifecycle phases, and master graceful shutdowns with preStop hooks and disruption budgets.

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Linux File Permissions Explained — Who Can Do What?

Master Linux file permissions including chmod, chown, special permissions like SUID/SGID, sticky bit, umask, and ACLs. Practical guide for DevOps engineers.

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Terraform State — Local vs Remote, Locking, and Why It Matters

Understand how Terraform state works, why it matters, and how to manage it properly with remote backends, locking, and best practices.

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Getting Started with AWS - A Complete Beginner's Guide

Learn the fundamentals of Amazon Web Services and deploy your first cloud application with step-by-step instructions.

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