Tag: #devops
Writing on GPUs, LLMs, MLOps, Kubernetes — and mindset · 196 posts
[DevOps] Complete Guide to Stub and Mocking Servers: From Concepts to Practice
A comprehensive guide covering the differences between Stub and Mock, comparison of major mocking tools (WireMock, MockServer, json-server, Prism), practical setup, and CI/CD integration.
2026-03-20 · 14 min read #devops#testing#mocking#stub#wiremock[DevOps] Let's Encrypt and Certbot Complete Guide: Free TLS Certificates
A comprehensive guide covering Let's Encrypt ACME protocol mechanics, Certbot installation and certificate issuance, DNS/HTTP challenges, automatic renewal setup, and wildcard certificates.
2026-03-20 · 9 min read #devops#tls#ssl#letsencrypt#certbot[Linux] Complete Guide to cgroups: The Core of Container Resource Control ♪ Listenable
A comprehensive guide to Linux cgroups (Control Groups): concepts, v1 vs v2 differences, CPU/memory/IO/PID limiting, usage in Docker and Kubernetes, and real-world troubleshooting.
2026-03-20 · 22 min read #linux#cgroups#container#kubernetes#devops[DevOps] Nginx TLS Configuration Complete Guide: PEM/Key Setup and Security Optimization
A comprehensive guide to applying PEM/Key files in Nginx, configuring TLS versions and cipher suites, HSTS, OCSP Stapling, HTTP/2 optimization, and mTLS setup.
2026-03-20 · 11 min read #devops#nginx#tls#ssl#security[DevOps] SSO Server Mocking Guide: Building OAuth2/OIDC Test Environments
A comprehensive guide to mocking SSO (Single Sign-On) servers. Covers OIDC Provider simulation with WireMock, Keycloak test containers, and mock-oauth2-server usage.
2026-03-20 · 11 min read #devops#sso#oauth2#oidc#mockingKubernetes CKAD Certification Practice Exam (55 Questions + 10 Practical Simulations) ♪ Listenable
Comprehensive CKAD (Certified Kubernetes Application Developer) practice exam with 55 multiple-choice questions and 10 hands-on practical simulations covering application design, deployment, observability, configuration/
2026-03-17 · 28 min read #kubernetes#ckad#certification#applicationdevelopment#devopsKubernetes CKA Certification Practice Exam (55 Questions + 10 Practical Simulations) ♪ Listenable
Comprehensive CKA (Certified Kubernetes Administrator) practice exam with 55 multiple-choice questions and 10 hands-on practical simulations covering all exam domains: cluster architecture, workloads, networking, storage
2026-03-17 · 26 min read #kubernetes#cka#certification#cloud-native#devopsOperating GitHub Actions ARC: Ephemeral Runners, Scale Sets, and Security Boundaries
A practical ARC guide covering runner scale set boundaries, ephemeral runner strategy, image management, network and secret isolation, and the operational signals that matter in production.
2026-03-17 · 4 min read #devops#github-actions#actions-runner-controller#arc#self-hosted-runnerAWS DevOps Engineer Professional (DOP-C02) Practice Exam: 75 Questions ♪ Listenable
75 practice questions for AWS DevOps Engineer Professional DOP-C02 exam covering CI/CD, CodePipeline, CodeBuild, CodeDeploy, CloudFormation, Systems Manager, and more.
2026-03-17 · 50 min read #aws#dop-c02#devops#certification#practice-examGitHub Branch Protection in Practice: Rulesets, Merge Queue, and CODEOWNERS
A practical guide to GitHub branch protection, rulesets, required checks, CODEOWNERS, merge queue, exceptions, and staged rollout patterns for repository governance.
2026-03-17 · 5 min read #devops#github#branch-protection#rulesets#merge-queueDevOps/SRE Complete Guide: From CI/CD to Kubernetes and MLOps
A comprehensive guide covering DevOps and SRE fundamentals, Kubernetes operations, and AI/ML workflow automation with real-world code examples.
2026-03-17 · 13 min read #devops#sre#kubernetes#ci-cd#mlopsAI Era Survival Guide Part 1: From Developer to DevOps/Platform Engineer — Roadmap and Realistic Strategy
A realistic career transition guide for developers afraid of being replaced by AI. Concrete roadmaps and learning strategies for transitioning to DevOps, platform engineering, and SRE in an era where coding work is incre
2026-03-17 · 18 min read #career#devops#ai-era#career-transition#platform-engineeringSSH Escape Sequences in Practice: Kill Hung Sessions, Add Tunnels Live, and Recover Remote Ops
Based on a GeekNews trend signal and grounded in the official OpenSSH manuals, this guide covers hung-session recovery, live port forwarding, keepalives, and multiplexing patterns for real remote operations.
2026-03-16 · 8 min read #linux#ssh#openssh#devops#remote-opsPlatform Engineering 2026: Boosting Developer Productivity 30% with Internal Developer Portals
Platform Engineering is replacing DevOps. Through Internal Developer Portals like Backstage, development teams follow "Golden Paths" where infrastructure, security, and deployment are fully automated, improving developme
2026-03-16 · 9 min read #platform-engineering#backstage#idp#developer-experience#devopsCybersecurity Threats March 2026: Zero-Day Exploits and Supply Chain Attacks
Critical analysis of March 2026 cybersecurity threats: Microsoft patched 84 flaws, Google released 129 Android security fixes, Cisco SD-WAN authentication bypass (CVSS 10.0), and GlassWorm supply chain attacks through VS
2026-03-16 · 7 min read #security#cybersecurity#zero-day#supply-chain#devopsVite 8.0 and Rolldown Bundler: Innovation in Rust-Based Frontend Build Tools ♪ Listenable
Analyzes the 10-30x build performance improvements achieved by Vite 8.0 integrating esbuild and Rollup into the Rust-based Rolldown bundler. Provides a practical guide covering installation, migration, benchmarks, and tr
2026-03-15 · 20 min read #devops#vite#rolldown#rust#frontendGlassWorm Supply Chain Attack Analysis: Invisible Threats in VS Code Extensions and Development Environment Security Strategy ♪ Listenable
Technical analysis of the March 2026 GlassWorm malware that infected over 72 VS Code extensions. Dissects Unicode variation selector-based concealment, Solana blockchain C2 channels, and self-propagation mechanisms at th
2026-03-15 · 26 min read #devops#security#supply-chain#vscode#glasswormsystemd Service Management, Unit File Configuration, and Troubleshooting
A practical guide to systemd service management, unit file configuration, and troubleshooting techniques for Linux system administrators.
2026-03-14 · 18 min read #systemd#linux#service-management#troubleshooting#devopsWebAssembly Component Model: The Journey to Making Wasm a First-Class Web Citizen
Analyzes how the WebAssembly Component Model proposed by Mozilla makes Wasm a first-class citizen of the web platform, covering practical implications and migration strategies.
2026-03-14 · 16 min read #webassembly#component-model#mozilla#web-platform#devopsGitHub Actions Advanced CI/CD: Matrix Builds, Cache Strategies, and Security Hardening
Covers production-level CI/CD pipeline construction including GitHub Actions matrix build optimization, cache strategies, self-hosted runner configuration, reusable workflows, and security hardening.
2026-03-14 · 18 min read #github-actions#ci-cd#devops#automation#security