This guide provides a comprehensive overview of common Linux commands for directory navigation, file manipulation, permission management, searching, compression, and system shutdown, complete with usage syntax, options, and practical examples to help users efficiently manage their Unix-like environments.
This article details a small‑to‑mid‑size e‑commerce platform’s journey from a few thousand daily page views to ten million, covering business challenges, three architecture evolution stages, key technical solutions, performance optimizations, cost‑control strategies, and practical automation tips.
This article explains why supplier tiering is essential, outlines three common classification models, describes a DMAIC‑based six‑stage supplier lifecycle, and shows how a digital procurement system can automate information management, quoting, execution, and settlement to improve operational efficiency.
This guide explains how to install and use the kubectl tail plugin—a krew‑based tool that streams logs from multiple Kubernetes Pods and containers in real time, covering prerequisites, offline manifest download, installation steps, and practical command examples for various selectors.
This article details a P0 production incident where a Kubernetes cluster became completely unresponsive due to 100% etcd database fragmentation, describing the step‑by‑step diagnosis, emergency recovery actions, root‑cause analysis, and long‑term preventive measures for reliable cluster operation.
This comprehensive guide explains what a settlement system is, outlines ten critical design steps—from data source identification to bill provision—and illustrates their application across diverse scenarios such as corporate welfare platforms, government services, promotion platforms, bank acquiring, points e‑commerce, ETC, and consumer finance, while highlighting key rules, workflows, and interface considerations.
This guide explains the common pain points of manual procurement inquiries and quotations, then walks through a five‑step approach to create an online, automated system that streamlines demand collection, supplier notification, price entry, real‑time comparison, and final price confirmation, improving accuracy and efficiency for both buyers and suppliers.
This article explains the challenges of managing rapidly growing server fleets, outlines a systematic classification of hardware and software faults, and details an end‑to‑end automated solution that combines in‑band and out‑of‑band data collection, rule‑based detection, and fully automated repair workflows to improve fault coverage, accuracy, and recovery speed.
This article explains how dynamic, data‑driven shelving strategies in a Warehouse Management System can dramatically improve space utilization, reduce picker travel, and streamline inventory handling by outlining key objectives, common tactics, detailed workflow steps, constraint checks, exception handling, and result processing.
This comprehensive guide walks operations engineers through essential Kubernetes commands, covering cluster inspection, pod lifecycle, service and network handling, storage configuration, troubleshooting, performance monitoring, scaling, security, and automation, enabling efficient and expert management of containerized clusters.
Discover the ten most widely used operations engineering tools—including Shell scripts, Git, Ansible, Prometheus, Grafana, Docker, Kubernetes, Nginx, ELK Stack, and Zabbix—detailing each tool's functions, ideal scenarios, advantages, and real‑world examples, plus sample code and configuration snippets.
This article explores the four‑layer load‑balancing architecture, five common algorithms (including Round Robin, Weighted RR, Least Connections, Consistent Hashing, and AI‑driven adaptive load), high‑availability design, deep pitfalls, and a self‑built load balancer implementation, providing practical code examples and best‑practice guidelines.
Modern software operations have shifted from a post‑launch checklist to an ongoing, automated discipline, and this article outlines the six core phases—requirement planning, CI/CD automation, comprehensive monitoring, incident response, performance tuning, and security compliance—providing concrete examples and practical advice for building a resilient DevOps culture.
This article presents a comprehensive list of 22 key performance indicators across planning, procurement, inventory, logistics, customer service, and overall operational efficiency, explaining how each metric can be measured, analyzed, and used to improve a company's supply chain performance.
This guide walks you through installing and configuring Nginx on CentOS, Docker, and macOS, explains core concepts like event‑driven architecture, compares Nginx with Tomcat, and clarifies the roles of traffic gateways, API gateways, and service registries, providing practical commands and Q&A for developers.
This guide reviews a comprehensive set of operations tools—including LDAP, JumpServer, Fabric, Ansible, dnsmasq, pdnsd, ApacheBench, TCPcopy, PortSentry, fail2ban, knockd, Vagrant, Docker, ELK, and Smokeping—detailing their features, advantages, and typical use cases for modern infrastructure management.
This guide explains how the Linux locate and find commands work, covering their performance characteristics, key features, common options, search criteria, combining conditions, actions, and how to use xargs for parameter passing, helping users choose the right tool for efficient file searching.
This guide shows how to create Bash scripts that mark an Nginx upstream server as down or up by editing the upstream configuration via SSH and then hot‑reload Nginx, providing a repeatable automation workflow for service deployment and rollback.
This article examines the four Linux Virtual Server (LVS) clustering modes—NAT, Direct Routing, Tunneling, and FULLNAT—detailing their architectures, data flows, configuration steps, advantages, disadvantages, and ideal use cases, helping operations engineers select the most suitable load‑balancing solution for high‑performance, scalable web services.
This guide explains why procurement price analysis goes beyond picking the lowest quote, outlines the components of a price, identifies six key influencing factors, and provides a five‑step process using a procurement system to record, compare, attribute, track trends, and act on price data.
This article recounts a disastrous production server data loss caused by an accidental rm -rf command, details the step‑by‑step recovery using ext3grep, extundelete and MySQL binlog, and shares hard‑earned lessons to prevent similar incidents.
After eight years of ops experience, this article shares three open‑source tools—SSL certificate management, SMS verification, and website monitoring—that automate routine tasks, cut costs, and prevent midnight outages, offering practical solutions for individual developers, small teams, and SMEs.
This article explains why suppliers often seem uncooperative, identifies the three core concerns that drive their behavior, and outlines five practical SRM system features—real‑time reconciliation, payment visibility, production planning, inventory alerts, and transparent performance—that transform supplier relationships into mutually beneficial collaborations.
This guide shows how to create two Python scripts that use the Eureka REST API to set a service instance's status to OUT_OF_SERVICE for taking it offline and to UP for bringing it back online, handling command‑line arguments, constructing URLs, sending PUT requests, and checking responses.
This guide introduces four essential Linux commands—lsmod, lsof, lspci, and lsscsi—detailing their purpose, syntax, useful options, and practical output examples, helping system administrators quickly diagnose kernel modules, open files, PCI devices, and SCSI devices.
Learn two practical Nginx configurations to prevent browsers from caching HTML files by setting appropriate Cache-Control, Pragma, and Expires headers, with examples for both standard location blocks and conditional directives, ensuring fresh content delivery for your web applications.
This article details China International Aviation's successful DevOps assessment—earning a Level‑2 Continuous Delivery rating—by aligning its refund system with both ITU international standards and domestic Chinese standards, and includes an in‑depth interview on implementation, benefits, challenges, and future plans.
This article presents a complete collection of shell scripts for initializing a wide range of Linux distributions—including Rocky, AlmaLinux, CentOS, Ubuntu, Debian, openEuler, AnolisOS, OpenCloudOS, openSUSE, Kylin Server, and Uos Server—detailing supported features, version‑specific updates, and step‑by‑step usage instructions.
This guide walks through installing Supervisor on Linux, explains its role as a Python‑based process manager, shows how to create a Webman daemon using 1Panel, and provides detailed configuration and management steps for supervising the daemon.
This article provides a complete Filebeat configuration example, covering input settings for log files, field definitions, multiline handling, module loading, Elasticsearch output parameters, index naming, authentication, and processors for field cleanup, enabling efficient log collection and indexing in Elastic Stack environments.
This article introduces Dish, a Go‑based command‑line utility for real‑time socket connection monitoring, explains its core features, technical principles, installation and usage examples, compares it with tools like netcat, nmap and telnet, and discusses its advantages and limitations for operations teams.
Infrastructure architecture, the often‑overlooked foundation of IT, defines how compute, storage, networking, and security are designed, integrated, and automated—linking software, ops, and cloud strategies—through processes like requirement analysis, technology selection, IaC implementation, and continuous optimization for reliability, performance, cost, and operational excellence.
From manual server provisioning nightmares to automated, version‑controlled infrastructure, this article explains what IaC is, why it matters, and how to adopt it using Terraform and Ansible, offering practical steps, best‑practice tips, and real‑world benefits for operations teams.
This article explains how to achieve high availability in internet systems by designing redundant components and automatic failover mechanisms across layers such as load balancers, reverse proxies, microservices, middleware, databases, and messaging, illustrating concepts with diagrams of architectures, clustering, leader election, and practical tools like keepalived, Zookeeper, Redis Sentinel, and Kafka.
This curated collection gathers the most valuable fault‑testing, Byteman, Chrome Extension, and frontend development articles from 2024‑2025, providing concise titles, direct links, and publication dates to help engineers quickly locate essential technical knowledge.
This article explains how Nginx rate limiting works, why it’s essential for protecting servers from overload and attacks, and details the token bucket algorithm with a step‑by‑step workflow and a practical configuration example.
Facing certificate expiration in isolated, regulated Kubernetes clusters? This guide explains the hidden risks, outlines a four‑step offline rescue toolkit, details automated rotation with Cert‑Manager and Vault, and provides compliance audit and disaster‑recovery strategies, illustrated with real‑world banking case studies.
The article explains how Event‑Driven Architecture (EDA) transforms traditional request‑response systems into decoupled, asynchronous pipelines that boost system resilience, scalability, observability, and agility, and it demonstrates a practical AWS EventBridge image‑processing workflow.
This article outlines the evolution of DevOps standards, organization‑level capability building, AI‑enabled R&D and operations, and the foundational AI‑driven assurance framework, highlighting recent assessments, standards, and industry adoption across finance, telecom, manufacturing, and other sectors.
This guide introduces Grafana, outlines its multi‑source monitoring features, and provides step‑by‑step installation instructions for Linux using systemd and for Docker Compose, including required commands, configuration files, and how to create and save a basic dashboard.
This article breaks down the cloud‑native concept for operations teams, explaining its meaning, the three core pillars—containerization, microservices, and container orchestration—and how adopting them can accelerate delivery, improve resilience, cut costs, and free engineers from repetitive manual tasks.
In modern cloud‑native environments, Prometheus Alertmanager offers powerful grouping, inhibition, and silencing features that reduce alert noise, help pinpoint root causes, and provide scheduled quiet periods, enabling teams to transform chaotic alert storms into manageable, actionable notifications.
This guide walks you through downloading and installing Nginx on CentOS, locating its directories, checking service status, viewing version, managing processes, testing configuration syntax, and restarting the server, all with clear commands and illustrative screenshots.
Inventory turnover rate, not delivery time or fulfillment rate, is the key metric for evaluating supply chain efficiency; this article explains its definitions, business-specific calculations, common pitfalls, data requirements, and practical steps to set, monitor, and leverage the metric for better operational performance.
This article provides a comprehensive comparison of popular log management solutions—including Filebeat, Graylog, the Elastic (ELK) stack, Grafana Loki, LogDNA, Datadog, Logstash, Fluentd, and Splunk—detailing their main features, pricing models, advantages, and drawbacks to help you choose the right tool for your needs.
This article dissects the core principles and architectural patterns behind Chinese super‑payment platforms' settlement systems, covering transaction‑clear‑settlement flow, settlement modes, account models, system components, processing steps, and key performance indicators for handling trillions of yuan each day.
This comprehensive guide lists 100 practical Windows command‑line utilities, organized into categories such as system management, network diagnostics, file handling, process control, and advanced operational tasks, while highlighting high‑risk commands and best‑practice rules for safe administration.
This guide reveals how companies can dramatically cut procurement expenses by first mapping their spending flow, then tightening demand control, approval boundaries, pricing comparisons, payment accuracy, and leveraging a digital system to create a closed‑loop, data‑driven purchasing process.
This guide explains why long‑lived IAM user keys are risky, introduces IAM roles and temporary security credentials, details trust and permissions policies, and provides step‑by‑step commands and profile configurations for safely using AWS STS assume‑role in production environments.
This guide walks through configuring rsync and inotify on multiple Linux hosts to achieve real‑time backup of NFS static resources, covering host preparation, rsync daemon setup, password handling, daemon activation, inotify‑driven monitoring scripts, and verification of successful synchronization.
This article explains the concept, architecture, core modules, decision process, and practical strategies of intelligent order routing in e‑commerce, showing how real‑time data and rule‑based optimization can reduce costs, shorten delivery times, balance inventory, and enhance customer experience.
A missed renewal of a TLS certificate for the domain https://support.content.office.net caused widespread certificate‑expired warnings for Office users on June 24, 2024, affecting all services that rely on several related domains and will likely be resolved once Microsoft updates the certificate during regular working hours.
Facing petabyte‑scale log traffic, the Qunar team identified low compression rates in their Kafka‑Filebeat pipeline as the main bottleneck and, through systematic tuning of batch size, memory queues, and round‑robin settings, achieved a 35% reduction in traffic and a 30‑42% drop in request volume while raising per‑minute throughput by 35%.
This guide explains why backing up GitLab as a pure Git repository is useful, compares the git clone --mirror method with GitLab's built‑in Rake backup, details how to back up critical configuration files, and offers practical automation tips for a robust, multi‑layered backup strategy.
This article examines common log‑management anti‑patterns—such as copy‑truncate rotation, NAS storage, multi‑process writes, file‑hole creation, frequent overwrites, and Vim edits—explains why they cause data loss or duplicate collection, and offers practical best‑practice recommendations for reliable log handling in cloud‑native environments.
This article compiles a comprehensive matrix of 58 mainstream operations tools—covering operating systems, open‑source mirrors, containers, AI‑assisted ops, basic services, databases, monitoring, automation, CI/CD and service mesh—to help engineers quickly locate the right technology stack for efficient infrastructure management.
This article explains what inventory turnover is, why it matters for cash flow and operational efficiency, and provides a three‑step framework—data dashboards, product rhythm management, and supply‑chain coordination—plus three key monitoring practices (trend, product, people) to continuously improve warehouse performance.
When the built‑in elastic user password is lost in Elasticsearch 8.x or 9.x, you can use the official elasticsearch‑reset‑password command‑line tool to generate or set a new password without restarting the service, following a few simple steps and troubleshooting tips.
A collection of startling operational mishaps—from a disastrous database expansion during a sales event to a Kubernetes storage blunder, a misconfigured ESXi host, a company‑wide Excel crash, and a power‑maintenance disaster that fried servers—illustrates the critical importance of proper procedures, backups, and infrastructure monitoring.
This article explains why procurement teams often get blamed when supply chain issues arise and outlines a practical, step‑by‑step framework—including standardized demand entry, automated approvals, consistent pricing comparisons, clear contract delivery nodes, and closed‑loop payment—to create a transparent, efficient procurement system.
Effective log management is crucial for cloud‑native observability, yet common practices like copy‑truncate rotation, NAS storage, multi‑process writes, file‑hole creation, frequent overwrites, and vim edits can cause data loss or duplicate collection; adopting create‑mode rotation, local disks, append‑only writes, and proper tools mitigates these risks.
This article walks through troubleshooting a failed deployment caused by a full disk, showing how to use df -h to check overall disk usage and various du options (including --max-depth and -sh) to pinpoint large directories and resolve the issue.
This comprehensive guide walks you through installing HAProxy via yum, RPM packages, or source compilation, then details every core configuration block—including global, defaults, frontend, backend, and listen sections—while covering load‑balancing algorithms, ACL routing, health checks, SSL termination, statistics, and practical code examples for building a robust, high‑performance load‑balancer.
This article offers ops professionals a comprehensive roadmap to boost technical expertise, embrace AI and big‑data trends, and cultivate personal habits such as health, finance, communication, and hobbies, turning weekend time into a powerful engine for career resilience and lifelong fulfillment.
The 25th GOPS Global Operations Conference in Shenzhen showcased Guoxin Securities' senior manager Lin Ying presenting a four‑stage CMDB development journey, a comprehensive data‑governance solution, real‑world case study, and future outlook, highlighting practical insights for digital transformation in operations.
This article outlines a comprehensive, financial‑grade security blueprint for a three‑person operations team using AWS services such as IAM, Secrets Manager, Session Manager, GuardDuty, and WAF, emphasizing Zero Trust, Least Privilege, and Defense‑in‑Depth to protect against external attacks, internal risks, and to enable clear audit trails for incident investigation.
This article provides a comprehensive, hands‑on guide to installing HAProxy, configuring global, defaults, listen, frontend, and backend sections, setting up ACL‑based load balancing, preparing backend web servers, testing the setup, and accessing the HAProxy statistics page.
This article dives deep into ServiceMonitor, comparing it with traditional Prometheus configurations, detailing its core fields, and providing hands‑on examples for Harbor and GitLab metrics, enabling you to create stable, flexible, and maintainable monitoring setups for Kubernetes services.
This article explores how the rapid rise of large language models and techniques like Retrieval‑Augmented Generation, Chain‑of‑Thought prompting, and multi‑agent architectures can dramatically improve the speed, accuracy, and automation of fault localization in modern operations environments.
This guide shows how to map a low‑level containerd task ID to the corresponding Kubernetes Pod using ctr, kubectl, and jq commands, then provides step‑by‑step debugging actions such as pod inspection, log retrieval, and resource checks to quickly resolve container issues.
On June 6, 2025 Alibaba Cloud experienced a widespread DNS resolution failure affecting OSS, CDN, container image services and more, which was later linked to a Shadowserver sinkhole, and the article outlines the incident timeline, root‑cause analysis, and practical mitigation steps for operators.
This article explains how Douyin, TikTok, Baidu, Alibaba Cloud and Tencent operate self‑built data centers with terabit‑level outbound bandwidth, details ByteDance's server count growth from tens of thousands to hundreds of thousands, and describes the CDN technologies that enable billions of users to stream smoothly.
HertzBeat is a powerful, agent‑less, open‑source real‑time monitoring and alerting platform that supports custom templates, high‑performance clustering, cloud‑edge collaboration, and a wide range of notification channels, making it ideal for modern cloud‑native operations.
This guide provides Kubernetes operators with a comprehensive, step‑by‑step troubleshooting manual covering pod, node, and cluster‑level issues, common pod states, exit‑code analysis, and practical commands such as kubectl describe, logs, top, and drain, enabling rapid diagnosis and resolution of K8s problems.
This article compiles practical advice from experienced operations engineers on the challenges and strategies for achieving a 300,000 CNY yearly salary, covering skill development, career moves, company size, automation, and the evolving role of SRE/DevOps.
This guide provides a comprehensive, step‑by‑step troubleshooting checklist for Kubernetes operations, covering Pod, Node, and cluster‑level problems, common pod status anomalies, and container exit‑code analysis to help operators quickly locate and resolve issues.
This article introduces Ceph as a leading open‑source distributed storage solution and presents a comprehensive operations manual covering common tasks, fault handling, and advanced topics to help engineers efficiently manage and troubleshoot Ceph clusters.
This article introduces Nginx UI, a graphical tool that simplifies Nginx configuration and monitoring, outlines its core features—including AI Agent support—provides pre‑installation notes, and offers step‑by‑step installation guides for Systemd, Docker, and quick‑install scripts, concluding with its operational benefits.
The article explains why warehouses can be overfilled while customers still face stockouts, analyzing false and structural overstock, flawed demand planning, weak supply chain execution, and offers practical steps such as data‑driven forecasting, ABC inventory classification, transparent collaboration, fast‑response mechanisms, and accountability to resolve the paradox.
This comprehensive guide walks you through designing a highly available Kubernetes cluster, covering multi‑master control‑plane deployment, worker‑node resilience, advanced networking with Cilium, durable storage with Rook/Ceph, monitoring with Thanos, security policies, disaster‑recovery strategies, cost control, and automated rollouts, all illustrated with concrete configuration snippets and real‑world performance results.
This guide explains how to manage systemd journal logs on Linux, covering persistent storage configuration, size limits, various journalctl commands for viewing service, user, command, and boot logs, as well as log rotation, vacuuming, and integrity verification.
This article presents JD's comprehensive methodology for digitally transforming large and medium-sized state-owned enterprises, outlining strategic phases, technology adoption, organizational changes, and implementation steps through a series of illustrative slides.
This article explains the differences between SLA, SLO, and SLI, shows how to express user expectations as concrete service level agreements, and introduces essential high‑availability metrics such as availability percentages, MTBF, MTTR, RPO, RTO, WRT, and MTD for reliable system design.
This article explains how to build a robust offline inventory counting system that prevents data loss, resolves synchronization conflicts, and ensures seamless operation even when network connectivity is interrupted, offering practical design patterns and pitfall‑avoidance tips for warehouse teams.
This article outlines a complete warehouse management SOP—from accurate receiving and scientific storage to efficient shipping, regular inventory checks, safety standards, and 5S principles—showing how to turn the warehouse into a reliable “bank” for the factory while boosting operational efficiency.
This comprehensive guide explains what supplier performance evaluation is, why it matters, and provides a step‑by‑step "3+1" framework—including metric definition, scoring methods, result grading, and system integration—to help organizations build a data‑driven, actionable SRM process that improves supply chain reliability and reduces costs.
The article introduces China’s System Operation Maturity Model (SOMM), detailing its three pillars—AIOps, SRE, and FinOps—along with the underlying standards, assessment results, and how enterprises leverage these frameworks to achieve smarter, more reliable, and cost‑effective IT operations.
This article explains the fundamentals of Layer‑4 and Layer‑7 load balancing, compares their advantages and disadvantages, and describes how a hybrid approach can combine high‑performance traffic handling with flexible application‑level routing for large‑scale systems.
This article presents a comprehensive overview of server fault management at scale, detailing the classification of failures, shortcomings of traditional manual processes, and the design of an automated detection and repair system that combines in‑band and out‑of‑band data collection, rule‑based alerting, and end‑to‑end repair workflows, while also outlining future directions for intelligent monitoring and reliability.
This article presents a comprehensive, source‑code‑derived list of every Elasticsearch configuration option—including hidden and undocumented settings—explains their scopes, default values, and types, and shows how the list can be used for quick lookups, performance tuning, debugging, and automation.
This article explains how AI agents enhance large‑model capabilities for AIOps, detailing single‑agent use cases like knowledge retrieval, tool guidance, and fault diagnosis, as well as multi‑agent collaborations, required skills, and future prospects for autonomous operations.
This guide explains how to use Nginx's HttpLogModule to control log output, defines key directives such as access_log, log_format, and open_log_file_cache, provides example configurations, demonstrates testing with curl, and offers practical tips for per‑location log management to improve troubleshooting and performance.
This guide walks through the required environment, Windows Server rsync installation, configuration of rsyncd.conf and password files, service startup, port verification, and client-side commands to achieve reliable, scheduled file synchronization between Windows machines.
This article explains how to overcome Dify's lack of built‑in scheduling and monitoring by integrating it with external task‑scheduling systems such as GitHub Actions and XXL‑JOB, detailing setup steps, limitations, and the advantages of using XXL‑JOB for precise, enterprise‑grade workflow automation.
This article explains what warehouse management really means, outlines its key goals such as safety, efficiency, supply‑chain coordination and data visualization, and presents six practical methods—including clear objectives, ABC classification, barcode usage, FIFO, space optimization, and digital automation—to dramatically improve warehouse performance.
This article explains how a SaaS company leveraged large language models to automatically ingest, enrich, and analyze stability alerts, turning noisy notifications into actionable insights through configurable pipelines, Feishu integration, and a streamlined AI workflow that boosts incident response speed and reduces manual effort.
This guide presents a curated collection of 20 practical Linux one‑liners—using awk, grep, netstat, and other shell tools—to extract IP counts, page views, bandwidth, error rates, concurrency, and other key metrics from Apache access logs, enabling quick and thorough server traffic analysis.
Six months after abandoning Kubernetes, our DevOps team reduced infrastructure spend by 62%, cut deployment time by 89%, eliminated weekend on‑call duties, and improved overall happiness, demonstrating that simplifying the tech stack can deliver substantial operational and business benefits.
This comprehensive guide covers core WMS terminology—from basic concepts like locations, storage slots, and SKUs to inbound/outbound processes, inventory management techniques such as FIFO and safety stock, strategic approaches including wave and picking methods, essential equipment like PDAs and RFID, and advanced industry jargon, providing product managers with the knowledge to navigate technical discussions, impress stakeholders, and optimize warehouse operations.
This article outlines common challenges in multi‑platform domain and HTTPS certificate management, introduces a unified management platform with features like automated syncing, Let’s Encrypt integration, and multi‑channel alerts, provides a step‑by‑step Docker deployment guide, and shares a curated collection of popular open‑source monitoring tools.
