Linux ops automation, cloud-native, Kubernetes, SRE, DevOps, Python, Golang and related tech discussions.
This guide walks ops newcomers through the ten most common pitfalls—from accidental rm‑rf deletions and mis‑configured firewalls to unsafe chmod usage—and provides concrete remediation steps, ready‑to‑run shell scripts, best‑practice checklists, and monitoring setups to keep production environments stable and secure.
This guide explains the NFS protocol, common mount failures, five root‑cause categories, step‑by‑step installation, configuration, verification, detailed error analysis, real‑world case studies, performance tuning, automation scripts, best‑practice recommendations and monitoring techniques for reliable NFS deployments on Ubuntu 24.04 and Rocky Linux 9.5.
This guide walks you through building a production‑grade monitoring solution for large language model inference services using a three‑layer metric hierarchy, Prometheus, Grafana, DCGM Exporter, and custom Python metrics, with step‑by‑step deployment, alerting policies, and real‑world troubleshooting examples.
This comprehensive guide walks you through Linux system hardening by outlining default settings, common pitfalls, and a step‑by‑step checklist of 20 critical configurations covering account policies, SSH, firewall, kernel parameters, file permissions, and audit logging, complete with verification commands, rollback procedures, and real‑world case studies.
When a thumbnail service experienced sudden latency spikes and OOM kills shortly after a new release, the author walks through a systematic investigation using free, smem, pmap, and perf to distinguish true memory leaks from page‑cache or shared‑page artifacts, pinpoint the native decoder buffer issue, and outline remediation steps.
This article explains why code‑quality issues are a major source of technical debt, introduces SonarQube’s multi‑language static analysis, describes its core features such as multi‑dimensional analysis, incremental scans and Quality Gates, and provides step‑by‑step deployment, configuration, CI/CD integration, best‑practice recommendations, troubleshooting tips and monitoring scripts to ensure reliable, secure and scalable code‑quality management in production environments.
This guide walks through a systematic, four‑layer analysis of Nginx 502, 504 and connection‑timeout failures, showing how to split the request path, collect logs and metrics, verify upstream health, adjust timeouts, and apply best‑practice configurations to quickly locate and resolve production issues.
This guide walks through the fundamentals of KVM virtualization, compares full and para‑virtualization, details hardware and software requirements, and provides step‑by‑step commands for preparing the host, configuring storage, networking, libvirt, creating and managing VMs, implementing best practices, troubleshooting, monitoring, and backup for a production‑ready private cloud.
The article explains why large‑model inference services frequently hit GPU memory limits, breaks down static vs. dynamic memory consumption, shows how KV‑Cache, request length, and concurrency amplify usage, and provides a step‑by‑step troubleshooting and mitigation workflow for production environments.
This guide walks through a complete MySQL master‑slave lag diagnosis process, explaining why relying solely on Seconds_Behind_Master is insufficient and showing how to separate IO and SQL thread issues, examine relay logs, detect long transactions, DDL locks, and apply best‑practice configurations and monitoring.
