This article outlines comprehensive production‑grade Kubernetes best practices—including health probes, RBAC, resource management, network policies, monitoring, autoscaling, image security, and zero‑downtime strategies—to help teams run secure, efficient, and highly available workloads.
This tutorial walks through preparing three Kubernetes nodes, extracting and distributing Zookeeper, configuring its zoo.cfg and myid files, starting and verifying the Zookeeper ensemble, then installing Kafka, adjusting its server.properties, and finally launching Kafka across the cluster.
The Windows‑only baulk package manager version 2.0 adds experimental untar and unzip sub‑commands, detailing untar's support for various tar formats and unzip's robust baulk::archive::zip implementation that handles many compression methods, filename encoding detection, SIMD‑accelerated decompression, and strict path security.
This article shares practical insights from a technical leader on designing robust system architecture, implementing comprehensive capacity planning, establishing reliable operations processes, strengthening security, and cultivating team awareness to achieve long‑term stability for large‑scale internet services.
StackStorm is an open‑source automation platform that connects existing infrastructure and applications, enabling event‑driven actions, workflow orchestration, and rule‑based operations across services such as monitoring, deployment, and incident response.
This article explains the concept, purpose, design principles, core features, authentication methods, deployment options, and popular open‑source and commercial solutions of bastion hosts, highlighting how they centralize access control, audit operations, and improve overall IT security and compliance.
This article defines DevOps, outlines its benefits and drawbacks, and explains key concepts such as automation, CI/CD, multi‑environment deployments, early failure detection, rollback, policy enforcement, and observability, showing how they collectively improve software delivery and organizational collaboration.
This tutorial walks through installing the open‑source Nightingale monitoring system using Docker, configuring its components, adding node agents, integrating with Grafana, and setting up alerting, providing all commands, configuration files, and screenshots needed for a production‑ready deployment.
This guide explains how to use Ansible to automatically install and configure Zabbix‑agent on a large number of Linux servers, covering inventory setup, a deployment script, a playbook, execution commands, and verification of the agent listening on port 10050.
This article details a systematic full‑link performance testing workflow—including background, timing, scenario design, data preparation, capacity planning, monitoring, issue analysis, and post‑test cleanup—aimed at reliably evaluating and scaling e‑commerce services during major promotional events.
This article explains the definitions, calculations, and practical importance of MTTR, MTBF, and MTTF for reliability engineering, showing how accurate data and proper metric use enable SRE teams to improve system availability, plan maintenance, and reduce downtime.
This article clarifies the distinction between stress testing and load testing, describing their respective models—fixed‑thread and fixed‑QPS—along with key metrics, formulas, and practical benefits for evaluating system performance under varying workloads.
Learn how to securely copy files between local and remote machines using the scp command, covering basic syntax, authentication options, copying to and from remote hosts, recursive directory transfers, and transferring between two remote servers, all illustrated with practical examples.
This article details iQIYI's end‑to‑end load‑testing methodology for its payment platform, covering problem identification, core‑link mapping, environment setup, realistic traffic modeling, execution safeguards, results from capacity verification and stress testing, and future plans for a unified testing solution.
This article examines iQIYI's low-code Quqiao platform for data synchronization, detailing the software engineering background, business data flow, development challenges, research of existing solutions, platform architecture, key features, and future improvement directions.
This guide explains how to delete inconsistent Kubernetes rc, deployment, and service objects, reset etcd data, address apiserver start failures caused by missing ServiceAccount certificates, disable SELinux for fluentd logs, generate ServiceAccount keys, recover from etcd startup errors, configure host trust, change hostnames, enable VirtualBox copy‑paste, force‑delete pods and namespaces, and avoid resource‑request‑only containers causing contention.
This guide walks through installing MariaDB, creating a Gogs database and user, setting up Git, extracting and launching Gogs, and configuring the application—including disabling registration—to complete a simple self‑hosted Git server on Linux.
This article explains the concept, purpose, design principles, functional modules, authentication methods, deployment options, and open‑source implementations of bastion hosts, highlighting how they centralize control, audit, and protect privileged access to servers and network devices.
This article explains Nginx’s core concepts—including reverse proxy, load balancing, static‑dynamic separation, common commands, configuration blocks, and high‑availability setup with Keepalived—providing step‑by‑step guidance and practical examples for building robust web infrastructure.
This guide walks through the complete process of adding a new disk to a Linux server running on VMware, including disk addition, partitioning, formatting, mounting, and handling disks larger than 2 TB with detailed command examples.
This article describes how NetEase built a real‑time log intelligent classification system using Flink and AI algorithms, detailing the challenges of massive log volumes, the Drain template‑extraction method, algorithm workflow, performance results, and a practical case study that demonstrates reduced alert storms and faster issue diagnosis.
This article explains the background, technical architecture, real‑world case, and key takeaways of implementing gray‑scale monitoring across web, Weex, mini‑programs, and other cross‑platform front‑end solutions to improve issue detection and reduce mean time to recovery.
This article details ICBC's extensive MySQL deployment—nearly ten thousand nodes supporting core A‑level applications—and outlines the bank's governance framework, including current challenges, standardized operational procedures, automation, containerization, and future self‑healing strategies to ensure reliable, high‑performance database services.
The article explains Microsoft’s Test‑In‑Production (TIP) approach, describing why production is the only true environment, how they use gradual releases, feature flags, telemetry, fault injection, circuit‑breaker testing, and chaos engineering to improve reliability, micro‑service compatibility, and business continuity.
This article explains what data centers are, outlines their core components—compute, storage, and networking—covers architectural decisions, industry standards, and emerging technologies such as edge computing, micro‑data centers, cloud integration, SDN, HCI, containers, NVMe, and GPU acceleration, highlighting their impact on modern enterprise operations.
The article explains the importance of microservice monitoring and presents a five‑level monitoring hierarchy—from infrastructure to end‑user experience—along with five essential monitoring aspects and a typical architecture using agents, message queues, ELK, and time‑series databases to ensure reliable, observable services.
This article explains the concept of gray release, outlines a simple architecture with essential components, describes common strategies such as header, cookie, and parameter based routing, and provides detailed implementation guidance for Nginx, gateway, and complex multi‑service scenarios.
This guide explains how to set up Jenkins email notifications, covering both the basic system‑wide configuration via System Settings and the advanced per‑project setup using Editable Email Notification, with step‑by‑step instructions and screenshots.
This guide shows Linux commands for quickly identifying the ten processes that consume the most CPU, memory, or virtual memory, explains the key ps fields, and provides alternative sorting options for system monitoring.
This article explains what DevOps is, outlines its key benefits such as faster feedback loops, higher quality and reduced costs, compares it with traditional IT operations, and provides practical guidance on mindset shifts, infrastructure as code, automation, and tool selection for successful adoption.
This article presents a comprehensive overview of Site Reliability Engineering (SRE) as shared by Google SRE expert Ramón Medrano Llamas, covering SRE fundamentals, a typical day’s workflow, design principles for massive scale, fault‑tolerant architecture, monitoring, SLI/SLO metrics, redundancy strategies, disaster recovery, and operational best practices.
This article explains the layered architecture of microservice monitoring, detailing five monitoring levels—from infrastructure to end-user experience—along with essential monitoring points such as logs, metrics, tracing, alerts, and health checks, and presents a typical monitoring stack using agents, Kafka, ELK, and InfluxDB.
This article describes how 58.com introduced ClickHouse to handle massive daily user‑behavior logs, detailing its features, multi‑layer architecture, configuration management, monitoring, performance optimizations, and operational automation to build a high‑availability, low‑cost analytics platform.
Youzan’s log‑governance guide uses a car‑dashboard analogy to show why precise ERROR logs and sensible alerts matter, defines INFO/WARN/ERROR levels, sets daily reduction targets, leverages top‑error analysis and water‑level monitoring, and ultimately cut daily ERROR entries from thousands to about one hundred while catching issues before incidents.
This tutorial walks you through downloading Jenkins, setting up JDK 1.8, installing and configuring Supervisord, creating the Jenkins directory, configuring supervisord to manage Jenkins, retrieving the initial admin password, and completing the web UI setup, all with clear command examples and screenshots.
A field investigation of the North‑Pavilion village in Guangzhou’s university town reveals hotel room rates, occupancy patterns, and cost structures, culminating in a detailed profit calculation that shows a 15‑room hostel can generate roughly 100,000 RMB annually.
Netflix built the in‑house Telltale system to consolidate monitoring data, reduce alert fatigue, and provide intelligent, multi‑dimensional health assessments for over a hundred production applications, enabling faster incident resolution and more reliable streaming for its 200 million users.
The article outlines essential DevOps metrics—such as deployment frequency, deployment time, automated test pass rate, code commit volume, defect escape rate, cost, failure rates, detection time, unplanned work, MTTF, application performance, MTTD, MTTR, delivery time, change quality, and customer feedback—to help teams monitor and improve software delivery speed, quality, and reliability.
The article details WeChat’s three‑in‑one strategy of precise product, agile projects, and robust technical support, explaining how the team achieves massive scalability, high availability, extensible protocols, resilient disaster recovery, and embedded monitoring through practices like small‑system‑big‑scale, gray‑release, and foundational components.
This article analyses the shortcomings of traditional log‑collection agents, compares Flume and Filebeat based on low‑cost, stability, efficiency and lightweight criteria, and presents practical solutions for file discovery, offset tracking, multi‑line handling and performance tuning in modern logging pipelines.
Xianyu’s new Message Quality Platform links client, API, and server logs by a unique messageId, cleans and clusters real‑time telemetry, correlates user behavior, and visualizes abnormal nodes, giving end‑to‑end traceability that cuts incident investigation time by over 90 % and can be applied to other pipelines.
This article summarizes Tao Hui's 2020 GOPS Global Operations Conference talk, covering practical techniques for optimizing basic resources, improving network efficiency, reducing request latency, and scaling system concurrency to achieve higher throughput and lower latency in modern distributed services.
This article presents a ready‑to‑use ELK‑based solution for private‑deployment environments, detailing design principles, rapid one‑click deployment via Jenkins, log and metric collection with Filebeat and Metricbeat, alerting using ElastAlert, and visualization in Kibana, while emphasizing simplicity, robustness, and minimal operational overhead.
The article explains how Home Depot (THD) adopted the VALET model—a five‑dimensional SLO language covering Volume, Availability, Latency, Error, and Ticket—to unify communication, automate data collection, and improve reliability across its massive retail and e‑commerce infrastructure.
JD Logistics architect Chen Haolong detailed the design, scalability strategies, and operational practices behind the billion‑level asynchronous messaging system that powered JD.com’s massive 11.11 shopping festival, revealing how the platform handled unprecedented traffic and ensured reliability.
The article presents six practical guidelines for designing scalable software architectures, covering cost‑scalability trade‑offs, bottleneck identification, the dangers of slow services, database scaling challenges, the importance of caching, and the role of comprehensive monitoring to ensure reliable growth under heavy load.
This guide explains how to use Prometheus' irate function and Grafana to calculate and visualize CPU, memory, and disk usage percentages for each host, including the necessary PromQL queries and formulas in a monitoring setup.
This article details Youzan's end‑to‑end construction of a unified data‑center cost billing system, covering background goals, multi‑type cost support, SDK‑based information collection, cost quantification for offline, real‑time and platform tools, full‑business coverage, multi‑dimensional analysis models, operational rollout, and future plans.
This article examines the critical role of stability governance in evolving systems, outlines a three‑stage framework—usability, monitoring alerts, and online emergency—illustrated with a case study of an electronic waybill service, and shares concrete strategies for prevention, detection, response, and post‑mortem to achieve predictable, observable, and fast‑acting reliability.
This tutorial walks through installing Alertmanager on a Kubernetes node, configuring its SMTP settings, integrating it with Prometheus for alerting, defining alert rules, and verifying that email notifications are correctly sent when a monitored node fails.
This article analyzes the concept of stability governance, outlines its five fault‑management sub‑domains, examines the pain points of an electronic waybill service, and presents a comprehensive three‑phase strategy—prevention, perception, reach, mitigation, and post‑mortem—backed by concrete implementation steps in availability, monitoring, and online emergency handling.
In this interview, Microsoft Visual Studio Cloud Services Program Management Director Lori Lamkin shares the evolution of their DevOps journey, covering rhythm changes, team autonomy, continuous delivery, trunk‑based development, dogfooding, frequent deployments, testing, security, telemetry, metrics, and the cultural shift toward operational responsibility.
This guide explains how to install Prometheus on a Linux server using both the binary method and a Docker container, covering downloading, extracting, configuring the prometheus.yml file, running the service, and verifying the installation.
This article explains how large‑screen data visualizations turn raw numbers into intuitive graphics, outlines key design principles such as focusing on an overview first, limiting metrics to 8‑12, balancing ratio and numeric indicators, and using maps for regional insights, and showcases JD Cloud’s 11.11 monitoring dashboards as practical examples.
This article introduces Xrkmonitor, a Chinese open‑source monitoring platform that combines point monitoring, log collection, data visualization, and alerting, and provides detailed advantages, featured functions, online and offline deployment guides, and the underlying technology stack.
The article analyzes the after‑sales process of international hotel bookings, defines key metrics such as defect rate and SPO, describes operational improvements, and presents a LightGBM‑based risk‑prediction model to reduce on‑site defects and enhance overall service efficiency.
A practical guide warns developers and operators to stay vigilant when executing risky Linux commands, offering step‑by‑step precautions, backup strategies, and safe aliases to prevent accidental data loss or system damage.
This article explains how Redis Sentinel provides high‑availability for Redis clusters by monitoring masters and slaves, automatically failing over to a new master, and offering three methods for receiving failover notifications, while recommending an indirect‑service approach for scalable integration.
This article chronicles a senior Alibaba technologist’s decade‑long journey through operations, monitoring, resource management, and product development, sharing practical insights on system automation, team leadership, career promotion, and the mindset needed to evolve from a junior engineer to a cloud‑native solutions architect.
This article details how Tencent's IEG Value‑Added Services team migrated a massive game data‑marketing platform to a cloud‑native architecture, outlining the business scenario, the cloud‑native developer platform, operational transformation challenges, technical practices such as asset management, orchestration, dynamic scheduling, monitoring, tracing, chaos engineering, CI/CD, and the resulting cost, stability, efficiency, and business empowerment benefits.
This tutorial explains how Jenkins can be used to run simple shell commands such as retrieving host information and how to automate bulk host‑key distribution with a custom script, illustrating the CI platform’s integration with version control and its ability to execute OS‑level operations.
After a Fusion Computer CNA node crashed and the VRM platform became unavailable, the author recovered lost virtual machines by locating disk images, fixing OVS flow tables, using an scp command with strict host‑key checking disabled, and recreating VMs, sharing key lessons for reliable operations.
This article explains what a data center is, its core components of compute, storage, and networking, the operational and architectural considerations for reliability and security, and reviews industry standards and emerging technologies such as edge computing, cloud integration, SDN, HCI, containers, NVMe, and GPU acceleration.
This article explains how to design a Redis high‑availability solution using the official Sentinel, covering its core features, configuration steps, three methods for receiving failover notifications, overall architecture diagrams, and practical recommendations for deployment and scaling.
This article provides a concise reference of essential Docker command‑line operations, including searching, pulling, listing, running, inspecting, managing containers and images, and additional utilities, helping developers, testers, and operations engineers efficiently work with Docker without a graphical interface.
Quantifying DevOps is challenging but possible, requiring baseline measurement of technical, financial, and cultural metrics, understanding bottlenecks, adopting appropriate tools, and continuously tracking progress to improve delivery speed, quality, and team satisfaction while avoiding blame culture.
This guide compiles practical Linux shell commands and scripts for tasks such as locating and moving files, batch extraction, text manipulation with sed, directory checks, disk‑space monitoring with email alerts, log analysis, firewall rules, SNMP queries, and more, helping sysadmins automate routine operations efficiently.
This article shares practical experiences with Prometheus in Kubernetes, covering core principles, limitations, common exporters, metric selection, capacity planning, high‑availability strategies, query optimization, and integration with Grafana, offering actionable guidance for building reliable, scalable monitoring solutions.
This guide walks through preparing four servers, installing and configuring Nginx as a load balancer, setting up Keepalived for virtual IP failover, and verifying that traffic seamlessly switches between the master and backup nodes.
This guide compiles the most frequently used Linux commands for file navigation, content viewing, searching, permission handling, text processing, compression, system shutdown, and process management, providing clear syntax examples and practical tips to boost operational efficiency for system administrators.
Managing hundreds or thousands of tightly coupled services inevitably creates diverse operational challenges, so effective service governance—covering definition, lifecycle, versioning, registration, monitoring, ownership, testing, and security—is essential, and can be realized through a unified DevOps‑driven platform.
This guide explains the complete load‑testing workflow—from defining objectives and selecting targets to monitoring key performance indicators, analyzing results, and calculating the backend QPS needed to meet service‑level expectations.
At the 2020 GOPS Global Operations Conference, Tencent’s senior operations engineer Xie Hailin detailed the design and implementation of the Panshi platform—a comprehensive, high‑availability solution that unifies change management, fault handling, continuous operation, and disaster recovery to ensure uninterrupted payment services for billions of daily transactions.
This guide presents a collection of essential Linux command-line techniques, covering file searching and moving, batch unzipping, powerful sed one‑liners, directory checks, disk usage monitoring with email alerts, log analysis, SNMP queries, firewall rules, and various scripting shortcuts for efficient system administration.
This article provides a detailed overview of Nginx, covering its high‑performance architecture, reverse‑proxy concepts, load‑balancing strategies, static‑dynamic separation techniques, common command‑line operations, configuration file structure, practical reverse‑proxy and load‑balancing examples, and a high‑availability solution using Keepalived.
This article details how a performance testing team at a major e‑commerce company designed and evolved full‑link load testing from zero to a mature, repeatable process, covering its definition, historical milestones, challenges during major sales events, and future optimization plans.
This article explains how to use Zabbix Agent2 to monitor Redis, covering the plugin's architecture, configuration priority, methods for retrieving INFO, CONFIG, health status, and slow‑query logs, as well as practical steps to set up the Redis template in Zabbix.
This article compares microservices and monolithic architectures across eight operational dimensions—network latency, complexity, reliability, resource usage, scaling precision, throughput, deployment time, and communication—showing where each approach excels and concluding which wins overall.
This guide demonstrates how to automate the quarterly rotation of root passwords across multiple Linux servers by configuring password‑less SSH, creating an Ansible playbook, testing it, and executing it with or without inventory‑based credentials.
This article compiles extensive architecture skill maps, categorizes DevOps tools across development, deployment, and maintenance phases, and discusses related technologies such as cloud computing, big data, and security, providing a detailed reference for architects and engineers seeking a holistic view of modern software delivery ecosystems.
This article explains how the JSTracker platform was used to build a comprehensive end‑to‑end front‑end monitoring and data analysis solution that meets the 1‑5‑10 safety production goal—detecting issues within one minute, locating them in five, and fixing them in ten—by improving coverage, subscription, metrics, and gray‑release monitoring for Alibaba’s Double‑11 promotion.
This article explains the concept of graceful shutdown for Java services, demonstrates how to register shutdown hooks with Runtime.getRuntime().addShutdownHook, provides a complete code example using thread pools, shows the execution results, and discusses best practices for safely terminating applications.
This article outlines how a city‑commercial bank redesigned its monitoring architecture using a closed‑loop “monitor‑manage‑control” strategy, detailing the current challenges, the three‑tier solution, its advantages, and future directions for automated, AI‑enhanced operations.
UiPath’s server platform is organized into three logical layers—Presentation, Web Service, and Persistence—each providing specific components such as REST APIs, web applications, Elasticsearch, and SQL Server, and follows a VCS‑managed deployment workflow that moves projects from development through QA to production.
In this talk, Yun Jin explains how HBase’s petabyte‑scale, horizontally‑scalable architecture—built on Hadoop, HMaster, RegionServers, and Zookeeper—enables e‑commerce platforms to handle extreme promotion‑day traffic by supporting high‑throughput reads/writes, time‑series monitoring, massive order storage, and robust HA, while covering essential table operations, monitoring, and troubleshooting techniques.
The team migrated a large, multi‑service microservice publishing platform—including Xianyu, Taobao, Alipay, and Tmall—from a centralized environment to a department‑built infrastructure in ten working days by cloning the repo, updating configurations, separating databases, rigorously verifying functionality across dev, pre‑release, and production, and ensuring isolation and monitoring for stability.
JD.com's intelligent supply‑chain team combined AI‑driven forecasting, S&OP planning, real‑time inventory response, smart fulfillment, anti‑arbitrage detection, price governance, and precise C2M delivery to dramatically cut costs, improve inventory turnover, and deliver a seamless 11.11 shopping experience.
The article explains how enterprises can achieve business agility by adopting lean‑agile DevOps practices, using the DevOps Evolution Model and CI/CD pipeline modeling, and leveraging a Software Factory approach together with SAFe to improve delivery speed, quality, and operational efficiency.
This guide explains how to set up a simple two‑node Elasticsearch cluster in a cloud environment, covering prerequisite checks, installation, configuration of master and slave nodes, certificate handling, password setup, and verification of the cluster’s health.
Alibaba's Double 11 set a new record with 498.2 billion yuan in sales and a peak of 583,000 orders per second, prompting the Taobao tech team to confront unprecedented concurrency, live‑streaming spikes, and evolving consumer behavior through advanced cloud‑native architectures and real‑time content integration.
iQIYI’s Consul‑based service registry, tightly integrated with its QAE container platform and API gateway, suffered a multi‑DC outage caused by network jitter and a metrics‑library lock‑contention bug, which was resolved by upgrading Go, go‑metrics, and Raft, adding extensive monitoring, redundant DC registration, and dedicated per‑gateway Consul clusters to ensure continued stability and scalability.
This article introduces essential Ansible terminology such as control node, managed nodes, inventory, host files, modules, tasks, playbooks, and roles, and demonstrates basic commands for user creation, directory management, file deletion, and package handling on Linux hosts.
This article introduces Ansible as an open‑source automation framework, explains its key features, shows how to install it, configure the main settings and inventory, and demonstrates basic command‑line operations such as running modules and copying files across servers.
This guide consolidates practical Elasticsearch tuning techniques—from configuration file settings and system‑level adjustments to usage‑level optimizations—covering memory locking, discovery, fault detection, queue sizing, JVM heap, file descriptors, translog handling, bulk indexing, shard management, and best practices to achieve a stable, high‑performance cluster.
This article reveals how JD's Zhilian Cloud prepares for the massive 11.11 shopping festival by rapidly mobilizing teams, defining protection scopes, estimating resources, implementing high‑availability across regions and AZs, applying business degradation and elastic scaling, and establishing comprehensive monitoring and rehearsal practices to ensure a smooth, resilient promotion.
The article explains how a company can achieve a process‑oriented organization by defining business flow, aligning processes, leveraging IT to solidify data handling, integrating quality standards, and establishing continuous operations, emphasizing the need for clear concepts and roles across the enterprise.
This guide presents six practical kubectl commands—including get, events, logs, yaml output, scaling, and port‑forwarding—along with detailed usage tips to help you quickly diagnose and resolve common issues in Kubernetes deployments.
This guide walks through entering the BIOS, selecting system settings, configuring the storage controller, creating RAID 0/1/5 volumes with specific capacities, and verifying the status of each logical volume using step‑by‑step screenshots.
The article explores the consequences of destroying Alipay’s storage servers, detailing typical financial data center architectures, backup strategies, power redundancy, fire suppression systems, and the practical challenges of crippling such facilities, while highlighting regulatory and physical security measures.
China Agricultural Bank’s nine experts showcased how six major projects passed the third‑level DevOps continuous‑delivery assessment, demonstrating a domestic leading capability in reliable, repeatable, and efficient value delivery across large‑scale financial operations.
