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At 3:07 AM on August 15 2025 a critical alert indicated the entire site was inaccessible, leading to a 2‑hour, 500 k‑user outage caused by an expired domain that entered serverHold status, and this postmortem details the detection, root‑cause analysis, emergency recovery steps, and long‑term remediation measures.
After years of using Jenkins, the author explains why moving to a GitOps workflow with GitHub Actions for CI and ArgoCD for CD offers lower maintenance, tighter integration with Kubernetes, declarative configurations, and automated deployments, and provides a step‑by‑step guide covering environment requirements, repository layout, CI pipeline, ArgoCD application setup, multi‑environment strategies, secret management, RBAC, monitoring, troubleshooting, and migration best practices.
This guide explains how to restore lost MySQL data after accidental DELETE operations by using binary log replay, logical and physical backups, third‑party recovery utilities, and preventive measures such as proper binlog configuration, backup strategies, and permission controls.
This guide walks through the complete process of deploying a high‑throughput large language model inference service using vLLM, covering environment preparation, installation, configuration tuning, performance testing, real‑world case studies, monitoring, troubleshooting, and backup strategies for production‑grade deployments.
This article walks you through the full journey of transforming a traditional DevOps workflow into a modern internal developer platform, covering the why, architecture, step‑by‑step migration phases, reusable templates, automation scripts, security hardening, monitoring, and best‑practice recommendations for scalable, self‑service cloud‑native development.
This guide walks through a real incident where a Linux server was hijacked by a mining virus, detailing step‑by‑step emergency response, systematic forensic investigation, cleanup procedures, and hardening measures to prevent future breaches, complete with scripts and best‑practice recommendations.
This guide explains the shortcomings of Jenkins, outlines the core GitOps principles, details the selection of Tekton, ArgoCD, Harbor, and Kyverno, and provides step‑by‑step configurations, pipelines, and best‑practice recommendations for a production‑grade migration to a cloud‑native CI/CD platform.
This guide explains why accurate time synchronization is critical for distributed infrastructures, introduces Chrony as a modern NTP replacement, and provides step‑by‑step preparation, configuration, deployment, monitoring, and troubleshooting procedures—including real‑world case studies and best‑practice recommendations.
This guide walks through a real‑world Ceph cluster expansion from 500 TB to 1.2 PB, explaining the risks of automatic rebalancing, presenting a step‑by‑step, batch‑wise expansion plan with weight‑adjustment tricks, configuration tuning, monitoring, troubleshooting, and rollback procedures to keep business latency under control.
This guide explains why Docker image size matters for deployment speed, storage cost, and security, and walks through seven practical techniques—including multi‑stage builds, Alpine and Distroless bases, layer merging, dependency trimming, static compilation, and automated tools—to reduce a 1GB+ image to under 50 MB while preserving functionality.
