This guide introduces thirteen practical Linux operations tools—from network bandwidth monitors like Nethogs to security scanners such as NMap—providing concise descriptions, installation commands, and usage tips to help system administrators efficiently manage and secure their servers.
This article details InnoLive's migration from Open‑Falcon to the Nightingale monitoring platform, describing the pain points of their previous system, the selection process, deployment architecture, collection practices, and the substantial cost and performance benefits achieved.
This article explains the background, benefits, and measurement criteria of Kubernetes Horizontal‑Pod‑Autoscaler (HPA), describes the creation of metric tables and SQL queries for collecting scaling events and CPU usage, and presents a Python‑based workflow that aggregates the data, stores daily reports, validates results, and sends automated email summaries.
The article explains how integrating the four "持" principles from the book "Continuous Delivery 2.0" into daily software development can prevent the recurring problem of late‑night releases by emphasizing minimal work, continuous decomposition, feedback, and ongoing improvement.
This article outlines how the Industrial and Commercial Bank of China's software development center redesigned its development‑testing environment operations—highlighting key characteristics, practical governance measures, current challenges, and strategic improvements to boost efficiency, automation, and resource utilization.
This document presents a comprehensive overview of the traffic domain in a data warehouse, covering its concepts, objectives, guiding principles, core and extension models, data quality, monitoring, scheduling, and operational practices to achieve a complete, accurate, efficient, low‑cost, and high‑value traffic data system while addressing massive data volume, consistency, and SLA challenges.
This article details how Industrial and Commercial Bank of China (ICBC) tackled rapid product demand and limited R&D resources by designing a unified, enterprise‑level DevOps platform that streamlines continuous integration, delivery, and deployment, improves collaboration, and supports future digital transformation initiatives.
This article provides a step‑by‑step tutorial on installing Nginx, explains core directives such as listen, server_name, and location, and covers advanced topics like rate limiting, various load‑balancing algorithms, reverse proxy setup, keepalive tuning, gzip compression, CORS, anti‑leech, and integration with LVS and keepalived for high‑availability deployments.
This article recounts a three‑day image‑upload outage in a mini‑program, analyzes the multi‑layer causes, and shows how combining Metrics‑Driven Development with SRE and a custom observability platform dramatically reduces diagnosis time and improves reliability.
This article explains the concept of data governance, outlines ByteDance's four‑mission platform goals, details the end‑to‑end governance workflow, and describes the one‑stop, full‑link, and rule‑based architecture that powers their data governance solution.
This article details Qunar Travel's mature chaos engineering platform built on chaosblade, covering value analysis, system architecture, shutdown and dependency drills, automated closed‑loop testing, attack‑defense exercises, and the measurable reliability improvements achieved across thousands of services.
Alibaba and North China Electric Power University conducted a pioneering cross‑regional “computing‑power–electricity” optimization pilot, shifting workloads from a Jiangsu data center to a Hebei renewable‑powered site, demonstrating millisecond‑level coordinated scheduling that reduces power demand, cuts CO₂ emissions, and aligns with national green‑energy policies.
This article outlines a comprehensive approach to handling call‑center incidents, covering fault boundary definition, emergency recovery actions, rapid root‑cause localization, enhanced monitoring strategies, clear alerting, proactive automation, and the creation of concise, regularly exercised emergency response plans.
This article examines the design principles, challenges, and implementation details of a multi‑active architecture for hybrid cloud environments, covering stability, cost, efficiency, network topology, container orchestration, service discovery, traffic scheduling, and data storage, and outlines practical solutions used by the Zuoyebang platform.
The LNMP one‑click installation package V1.9 adds support for Rocky Linux, AlmaLinux, CentOS Stream 9 and several Chinese Linux distributions, introduces PHP 8.1, new PHP extensions, MySQL 5.7/8.0 binaries, IPv6 and ZeroSSL options, and provides detailed management commands for deploying and maintaining Nginx, MySQL, PHP and related services.
This article summarizes Professor Niu Xiaoling’s GNSEC 2022 keynote, outlining the XOps framework and its five pillars—XOps, DevOps research and operational efficiency metrics, AIOps, BizDevOps, and FinOps—while detailing their drivers, maturity models, implementation examples, and the role of standards in guiding enterprises toward intelligent, cost‑effective, and business‑value‑focused software delivery.
Bilibili’s SRE team ensures flawless large‑scale online events by meticulously gathering activity details, provisioning DNS, CDN, networking and compute resources, conducting multi‑stage performance tests and chaos‑engineering drills, applying layered traffic controls, maintaining historical checklists, executing predefined contingency responses, and iterating post‑mortems to drive continuous automation and reliability.
This tutorial explains how to use Jenkins, the Git Parameter plugin, and parameterized builds to fetch and display Git branch information within a pipeline, including installation steps, configuration details, and common troubleshooting tips.
Architects should treat system capacity like a pre‑flight checklist, using this comprehensive guide to monitor resource usage across services, databases, and queues, and to define business metrics and state‑machine indicators that reveal bottlenecks and guide scaling decisions.
This guide explains how to plan an application by defining the problem it solves, understanding users and goals, then outlines systematic steps to analyze, improve, and automate business workflows, including practical questions, optimization methods, and a detailed expense‑report case study.
This guide details a call‑center system fault scenario and provides a step‑by‑step approach for operations teams to identify symptoms, assess impact, implement rapid recovery actions, improve monitoring, and maintain an effective emergency response plan, ensuring faster resolution and long‑term fault self‑healing.
With CentOS 8 discontinued and CentOS 7 reaching end‑of‑life in 2024, this guide reviews the leading domestic Linux replacements—including OpenEuler, Anolis OS, Alibaba Cloud Linux, TencentOS, KylinOS, deepin, and Red Flag Linux—detailing their features, compatibility, and suitability for cloud and on‑premise deployments.
This article explains the importance of tool platforms for DevOps, outlines the DevOps Capability Maturity Model's system and tool technical requirements—covering project management, work item management, planning, documentation, knowledge, team collaboration, metrics, and portfolio management—and provides guidance on selecting suitable tools.
The article examines how TikTok’s publicly cheerful brand masks a demanding, high‑intensity work environment in its U.S. offices, detailing long hours, relentless meetings, health impacts on staff, opaque compensation policies, and recent attempts by management to address employee burnout.
This article explains a two‑stage streaming log classification system that uses a prefix‑tree and longest‑common‑subsequence matching to generate log templates, handles traceback logs and cold‑start issues, and combines statistical unsupervised methods to detect anomalies while reducing false alarms.
This article describes how a team tackled stability and performance problems in a SolrCloud‑based search and recommendation stack serving 150,000 requests per minute, detailing root‑cause analysis, memory and GC tuning, replica configuration changes, and the resulting reductions in latency, resource usage, and operational complexity.
This article explains why Kafka suffers from broker‑side load imbalance, walks through manual replica migration examples, and then details how Cruise Control automates load balancing, supports resource‑group targeting, leader‑replica dispersion, and provides step‑by‑step deployment instructions.
This article compiles frequently asked questions and detailed solutions covering Apache Doris operational problems, data handling errors, and SQL query issues, providing step‑by‑step guidance, configuration tips, and command examples to help administrators troubleshoot and maintain a stable Doris cluster.
The article outlines a comprehensive approach to diagnosing, responding to, and preventing call‑center system failures by describing typical fault scenarios, step‑by‑step recovery actions, monitoring enhancements, emergency plan components, and continuous improvement strategies for operations teams.
From ancient barter and metal coins to paper money and today’s electronic payments, this article traces the four stages of currency evolution, explains the significance of payment licenses, and details the architectural progression of payment systems—from monolithic designs to microservice‑based, high‑availability infrastructures.
A concise collection of 14 practical Linux shell commands and scripts—ranging from file searching and batch extraction to log cleanup, directory checks, sed replacements, network capture, and firewall rules—helps operations engineers work faster and solve common problems without constantly searching online.
This article details a practical, semi‑automated monitoring solution for environments with fewer than 500 nodes, covering active monitoring concepts, Prometheus data modeling, service‑framework instrumentation, data scraping and visualization with Grafana, and alert handling via AlertManager.
A comprehensive reference of essential Linux commands covering file management, system monitoring, user administration, networking, compression, and process control, providing concise descriptions to help users navigate and operate Linux systems efficiently.
This article details how Ctrip transformed its technical support team into a public TS organization, describing the evolution of its support models, the architecture of its operation system, AI‑driven service accounts, wiki automation, crawler tools, tagging strategies, monitoring dashboards, and future plans to enhance efficiency and user satisfaction.
This guide explains how Zabbix agent monitors Linux and Windows systems, compares active and passive modes, and provides detailed optimization tips for OS metrics, CPU, memory, filesystem, Windows services, performance counters, and event logs, including alarm suppression and macro usage.
The article explains how Facebook engineered a scalable, automated public peering management system—replacing manual, error‑prone processes with a workflow that uses a dedicated peering portal, PeeringDB OAuth authentication, and automated BGP session provisioning to improve reliability and save hours each week.
Facing high manual costs, steep data‑creation barriers, and a lack of test‑data support, Xianyu designed a configurable, multi‑endpoint platform that automates product, order, and discount data generation, dramatically speeding up testing and enabling left‑shift testing across PC, app, and DingTalk.
Ubuntu 22.04 LTS introduces a default Wayland display server, a lighter Yaru theme, a more compact GNOME desktop, enhanced desktop icons, horizontal workspaces, revamped app launcher, dock refinements, new accent colours, touch‑pad gestures, password‑protected zip handling, microphone mute alerts, calendar events in the notification area, expanded power‑management modes, visible restart option, improved keyboard shortcuts, extensive multitasking settings, a new interactive screenshot tool, proper dark mode, and Firefox distributed as a Snap package.
This article explains how limited resources shape product requirement prioritization, test‑bug grading, product‑module classification, online bug severity, and incident response levels, offering practical frameworks and concrete grading tables to help teams make objective, value‑driven decisions throughout a product’s lifecycle.
This article provides a comprehensive, step‑by‑step tutorial for installing and configuring the phpIPAM IP address management web application on a Linux server, covering environment preparation, disabling SELinux, installing dependencies, setting up Apache and MariaDB, cloning the source, adjusting permissions, and completing the web‑based setup.
This article reviews how leading Chinese enterprises such as Tencent, Quark, and Baoxin Software applied the CAICT DevOps Capability Maturity Model, detailing their assessment results, continuous delivery improvements, and security‑risk achievements to enhance IT performance and support digital transformation.
This article reviews how leading Chinese securities companies adopted the CAICT‑led DevOps Capability Maturity Model, detailing assessment results across dozens of projects, the improvements in delivery speed, test coverage and security, and the broader impact on digital transformation in the financial sector.
To tackle growing production complexity and past incident delays, the consumer trading platform introduced a three‑tier NOC‑SLA with intelligent baselines powered by Facebook Prophet, streamlined alert rules, and an SOS‑linked workflow, boosting detection frequency, cutting critical response times to under five minutes, and improving overall system reliability while emphasizing ongoing baseline and rule maintenance.
This article explains how ByteDance’s self‑built SLA assurance platform addresses data pipeline communication costs, unclear responsibilities, and operational pressure by introducing roles, a streamlined signing workflow, checkpoint and recommendation calculations, and real‑time monitoring to achieve a 99.1% SLA compliance rate.
This article reviews how leading Chinese banks have adopted the CAICT DevOps Capability Maturity Model to improve IT efficiency, detailing assessment statistics, specific project implementations across continuous delivery, technical operation, security, and tooling, and highlighting the overall impact on digital transformation.
This article reviews how major Chinese joint‑stock banks have adopted the CAICT DevOps Capability Maturity Model, detailing the number of evaluated projects, each bank’s implementation experiences across continuous delivery, security, and toolchain standards, and the overall impact on IT efficiency and business agility.
This article explores the philosophy and practical techniques of failure‑oriented design, covering why anticipating failures is crucial for developers, the organizational and process changes needed, core design principles, and concrete implementations such as multi‑level Redis distributed locks with code examples.
This article introduces the open‑source visual tool NginxConfig, walks through installing Node.js and NginxConfig, shows how to configure documentation, front‑end, and API sites, generate the Nginx configuration, and deploy it on a Linux server.
This guide compares three ELK deployment architectures—Logstash‑only, Filebeat‑assisted, and cache‑queue‑enhanced—explains their trade‑offs, and provides concrete Logstash/Filebeat multiline, timestamp, and module‑filtering configurations to address typical logging problems.
This article presents a two‑stage streaming log classification system using an improved prefix‑tree and longest‑common‑subsequence algorithms, along with a statistical unsupervised anomaly detection method that leverages chi‑square aggregation and box‑plot scoring to reduce false alarms and accelerate template convergence.
This article outlines the evolution of Meituan’s Database Autonomy Service (DAS), describing the growing scale‑vs‑operations imbalance, the strategic roadmap for self‑service and AI‑driven diagnostics, detailed architectural designs across data collection, compute/storage, and analysis layers, and the measurable outcomes and future plans for full database autonomy.
This guide explains how to retrieve and change the temporary GitLab root password generated during a Terraform deployment, outlines two recovery methods—including using the password‑reset feature and directly updating the password through the GitLab Rails console with example code.
This article introduces the ELK stack components, compares three typical deployment architectures—Logstash as collector, Filebeat as collector, and a cache‑queue‑enhanced design—then discusses common logging issues such as multiline merging, timestamp handling, and module filtering, providing concrete configuration examples and solutions.
This article provides a comprehensive guide on configuring and optimizing Zabbix agent monitoring for Linux and Windows, covering agent types, passive and active modes, macro variables, LLD macros, CPU/memory/file‑system metrics, and Windows service, performance counter, and event‑log monitoring.
This article explains the concept of chaos engineering, its six key benefits, the design of a full‑lifecycle chaos platform, fault‑atom categories, experiment orchestration, risk control, automation, red‑blue war games, and practical experiments that helped Tencent Games improve system reliability while cutting operational costs.
This article provides a step‑by‑step tutorial on setting up Prometheus and Grafana for 24/7 monitoring of Linux servers and MySQL databases, covering installation, configuration, data visualization, alerting with onealert, and common troubleshooting tips for reliable operations.
This article examines how 58 Home Service identified service gaps through user research, built a detailed user‑experience map, created a comprehensive SOP handbook covering image, etiquette, and behavior, and implemented training, assessment, and incentives to dramatically improve customer satisfaction and reduce complaints.
This article analyzes the performance challenges of Taobao Mini Programs, defines a multi‑dimensional experience metric, builds a standardized ops data pipeline, introduces the T2 first‑screen algorithm and a three‑stage performance model, and shares concrete optimization practices that reduced T2 from 2.7 s to 1.9 s while improving business metrics.
This article explains the core principles of DevOps, its historical development, the advantages it brings to software delivery, and practical steps for organizations to adopt a collaborative DevOps culture between development and operations teams.
Bilibili’s SRE team combines stability theory, detailed fault‑stage and operational metrics, and a unified emergency‑response platform—including on‑call scheduling, fault‑command incident commanders, automated fault portraits, and rapid post‑mortems—to transform frequent incidents into data‑driven, collaborative recoveries and lay groundwork for AI‑assisted self‑healing.
Beijing Gas’s Tongzhou Call Center project passed the Level 2 DevOps continuous‑delivery assessment, showcasing how standardized processes, a cloud‑native tool platform, and agile practices dramatically improved delivery speed, quality, and digital transformation across the organization.
The CAICT’s fourth‑batch DevOps assessment reveals that China Zhongjin Wealth’s platform passed the Excellent level, showcasing how standardized pipelines, tool empowerment, and the DevOps Capability Maturity Model dramatically boost delivery speed, quality, and competitiveness across major enterprises.
In this interview series, three industry experts explain how monitoring differs from observability, the shifts required for ops, developers, and architects, the core methodologies and technologies behind metrics, traces, and logs, and practical guidance for selecting and integrating observability tools in cloud‑native environments.
This article explains how adopting a DevOps culture—by forming true functional teams, shortening release cycles, and aligning shared goals—can resolve the conflicting objectives of developers and operations, enhance communication, and enable more frequent, higher‑quality software deliveries.
The article examines Alibaba Cloud's DNS operation platform, detailing its three‑stage evolution—standardization, automation, and intelligent automation—and how these practices achieve sub‑10 ms latency stability, zero‑downtime fault isolation, and scalable reliability for billions of daily queries.
The article presents two 2018 incidents where improper Java thread‑pool settings caused service degradation and unavailability, analyzes the root causes such as insufficient core size, unbounded queues, and missing rejection handlers, and offers practical recommendations for dynamic sizing, alerting, degradation strategies, isolation, and auto‑scaling to prevent similar faults.
This article introduces the DevOps culture and systematically categorizes a wide range of DevOps tools—including source‑code management, CI/CD, containers, cloud providers, automation, monitoring, project management, and secret management—to help teams improve productivity and collaboration.
This article describes how TAL Education Group evaluated, selected, and customized the open‑source Orchestrator tool to build a highly available, secure, and extensible MySQL HA solution that meets 99.99% uptime, data‑integrity, cross‑datacenter, and operational automation requirements.
When a Linux server raises a disk‑space alarm, this guide shows step‑by‑step how to locate the offending directories or files using df, du, find, lsof and tune2fs, and explains why reported usage may differ from summed directory sizes.
This article explains what Site Reliability Engineering (SRE) is, why it was created, the challenges in hiring SREs, and breaks the role into three layers—Infrastructure, Platform, and Business—detailing their duties, deployment processes, on‑call practices, SLI/SLO management, incident post‑mortems, capacity planning, user support, and career advice.
This article explains what SRE is, why it was created, how its responsibilities differ across companies, and breaks the work into Infrastructure, Platform, and Business SRE while covering deployment, on‑call, SLI/SLO, incident post‑mortems, capacity planning, user support, and career advice.
This article explains common configuration challenges in microservice applications and introduces Alibaba Cloud's AHAS feature switch as a lightweight, dynamic configuration framework that offers zero‑code integration, strong type validation, persistent storage, and non‑intrusive deployment for real‑time business control.
The document outlines the background, vision, current status, technical research, value, product and technical architecture, and functional design of a cloud‑native monitoring platform that integrates SkyWalking and Prometheus to provide comprehensive APM, resource utilization, alerting, and rapid fault localization for business and technical middle‑platform services.
This article explains Site Reliability Engineering (SRE), covering its origins, core responsibilities, key concepts such as SLI/SLO/SLA and error budgets, the four golden monitoring metrics, risk analysis, and practical guidance on building reliable services using tools like Prometheus and Grafana.
This guide compiles a comprehensive set of Linux commands—using awk, grep, netstat, and other tools—to help you count unique IPs, rank page visits, filter bots, monitor connection states, calculate bandwidth, and identify high‑traffic or error‑prone resources from Apache or Nginx logs.
The article presents a comprehensive analysis of marketing‑related financial loss cases, outlines the design and implementation of a non‑intrusive, event‑driven Marketing Guard system with dual‑layer ES‑HBase storage, and discusses its operational safeguards, achievements, shortcomings, and future development plans.
The article explains that many organizations fail to achieve the promised business value of DevOps because they overlook four critical factors—leadership, organizational structure, value‑stream mapping, and regular pulse checks—and provides concrete recommendations to address each area.
This guide explains how to enable the nginx‑status module, configure Nginx to expose metrics, collect them with Telegraf, store them in InfluxDB, and visualize the data in Grafana, providing a complete end‑to‑end monitoring solution for Nginx servers.
This article walks through a real call‑center outage scenario, outlines systematic fault‑identification steps, practical emergency recovery actions, monitoring enhancements, concise emergency‑plan design, and introduces intelligent event‑handling to help operations teams resolve incidents faster and more reliably.
The article argues that launching a brand‑new project using microservices often incurs excessive infrastructure, cultural, and operational costs that outweigh the touted benefits, and suggests that a well‑designed modular monolith can be a more pragmatic alternative for many teams.
The article explains why, despite cloud services, enterprises still need to develop their own database middleware to ensure multi‑cloud compatibility, vendor neutrality, high availability, and scalable performance, detailing the challenges, design principles, core features, technical metrics, and operational benefits of such a solution.
This article examines TAL Education's hybrid‑cloud journey, explaining what hybrid cloud is, presenting industry adoption statistics, detailing the company's initial network chaos, outlining governance difficulties, describing the first‑phase remediation measures, and outlining the objectives and methods for the second‑phase transformation.
This article systematically presents thirty architectural patterns—covering management, monitoring, performance, scalability, data handling, design, messaging, resilience, and security—to help engineers design, implement, and operate robust, high‑performance distributed systems.
GitHub experienced multiple service outages over recent weeks due to resource contention in its MySQL1 cluster, leading to prolonged downtimes, and the company disclosed detailed timelines, root causes, and ongoing mitigation measures such as load audits, traffic shifting, and infrastructure scaling to prevent future incidents.
This article explains DevOps as a cultural, organizational, and technical shift that unifies development, operations, and quality assurance, outlines its benefits such as faster delivery and improved reliability, describes key practices like CI/CD, multi‑environment deployments, early failure detection, rollback, policy enforcement and observability, and discusses its potential drawbacks and considerations.
This guide explains how to adjust node quotas, tune kernel parameters, configure high‑availability etcd clusters, and set optimal Kube‑APIServer and Pod settings for large‑scale Kubernetes deployments, ensuring stability and performance as the cluster grows.
This article reviews several free Docker graphical user interface (GUI) tools—including Portainer, DockStation, Docker Desktop, Lazydocker, and Docui—detailing their platform support, feature sets, Docker version compatibility, and practical usage scenarios for streamlined container administration.
This guide walks through essential Kubernetes operations—from node kernel upgrades and Docker daemon tuning to pod resource limits, scheduling policies, health probes, logging standards, and comprehensive monitoring—providing practical commands and configurations to keep clusters stable and observable.
This article traces the development of open‑source monitoring solutions from early tools like Nagios and Cacti through modern platforms such as Prometheus and Nightingale, comparing their strengths, weaknesses, and typical use cases while also looking ahead to emerging observability trends in cloud‑native environments.
The article reports on the fourth draft discussion of China’s Cloud Computing Intelligent Operations (AIOps) Capability Maturity Model – Part 2, detailing the meeting’s participants, the finalized system and tool technical requirements, and the progress toward a comprehensive AIOps standard that addresses quality, cost, efficiency, and security across multiple functional modules.
After setting up an Nginx cluster, this guide explains how to enable the nginx-status module, collect metrics with Telegraf, store them in InfluxDB, and visualize the data using Grafana, providing a complete solution for real-time Nginx monitoring.
The author explains how they distinguished test automation from automated testing, identified monitoring pain points, built a custom scraper‑driven alert system with three escalation levels, tackled common pitfalls, and achieved faster, more reliable performance testing alerts.
This article explains why the rise of Kubernetes as a cloud‑native standard brings new observability challenges, outlines how eBPF enables non‑intrusive, multi‑language, multi‑protocol data collection, and describes a comprehensive monitoring stack—including golden metrics, service topology, tracing, alerts, and network diagnostics—to achieve end‑to‑end visibility in complex Kubernetes deployments.
This article presents a comprehensive catalog of thirty architectural patterns—including management, monitoring, performance, data management, design, messaging, resilience, and security modes—explaining their purpose, typical use cases, benefits, and implementation considerations to help engineers build robust, high‑performance distributed applications.
The article examines the growing complexity of multi‑cloud and hybrid cloud environments, identifies security, API, and logging challenges, and proposes a flexible, cloud‑neutral automation platform with clear communication, audit, planning, and incremental implementation steps to reduce operational overhead and cost.
The article outlines Ant Group's multi‑stage journey of building large‑scale distributed system stability, describing architectural evolutions, risk‑inspection mechanisms, high‑availability solutions such as LDC and fine‑grained traffic scheduling, and intelligent risk‑defense products that together enable resilient, cost‑effective operations.
This article details the background, overall architecture, iterative improvements, and future directions of JD Daojia's order timeliness system, covering early limitations, business‑driven challenges, solution iterations, order‑control mechanisms, product‑dimension handling, and the final business architecture to enhance fulfillment rates and user experience.
This article presents a curated list of practical Linux operation tools—including Nethogs, IOzone, IOTop, IPtraf, IFTop, HTop, NMON, MultiTail, Fail2ban, Tmux, Agedu, NMap, and Httperf—detailing their purpose, download links, installation commands, and basic usage to help system administrators improve monitoring, performance testing, and security on Linux servers.
This article outlines nine key DevOps metrics and KPIs—including the four DORA indicators and five additional measures—explaining how they help teams monitor performance, improve delivery speed, ensure quality, and maintain reliable, high‑availability applications.
After moving an application to a PaaS platform, intermittent 502 errors occur, seemingly only for POST requests, but the root cause lies in Nginx‑Ingress and uwsgi HTTP version mismatches, connection reuse, and retry behavior, which can be diagnosed through traffic analysis and configuration changes.
