This guide walks you through installing Docker and Jenkins on CentOS 7, configuring Jenkins plugins, creating a freestyle job that builds a Spring Boot application with Maven, and deploying it via a Dockerfile for fully automated one‑click deployment.
This guide introduces a lightweight Redis graphical management tool that offers full CRUD support for all Redis data types, outlines its Spring Boot backend and Vue frontend stack, provides step‑by‑step installation and Docker deployment instructions, and details current features, UI screenshots, and future development plans.
This article explains how to set up Docker on Windows, integrate it with IntelliJ IDEA, build and run a Spring Boot application inside a container, and connect the containerized service to a Redis instance, including configuration, Maven plugin setup, and troubleshooting steps.
This tutorial walks you through a complete one‑click Jenkins, Docker, and SpringBoot automated deployment on CentOS, covering environment preparation, Docker and Jenkins installation, plugin configuration, job creation, build testing, and running the packaged application in a Docker container.
Understanding container exit codes—from 0 for normal termination to 255 for unknown errors—helps diagnose pod failures in Docker and Kubernetes, covering each code’s meaning, typical causes, and step‑by‑step troubleshooting actions to resolve issues such as command errors, permission problems, signals, and resource limits.
This article traces the evolution of operating‑system level virtualization from the early UNIX chroot to modern Docker containers, explaining the roles of chroot, control groups, various Linux namespaces, their implementation details, and how Docker leverages these mechanisms for isolation and resource management.
This article provides a step‑by‑step guide to deploying a Nacos cluster on Linux, covering environment preparation, installation, MySQL configuration, application.properties settings, and cluster.conf setup, startup commands, and explains the Raft‑based leader election and data synchronization mechanisms for reliable microservice registration.
This guide walks through setting up MySQL master‑slave replication in Docker, configuring the instances, testing synchronization, then deploying Canal and integrating it with a Spring Boot 2.7.8 application to capture database changes and push them into Redis.
This technical guide details a real‑world Kubernetes deployment, covering a 10‑node cluster specification, master‑worker architecture, containerized frontend and backend services, MySQL persistence, load‑balancing, step‑by‑step deployment procedures, and monitoring setup.
This article investigates why a Go‑based service health‑check system experiences high latency, examines differences from Nginx checks, runs experiments on physical machines and Docker, and explores goroutine scheduling, GOMAXPROCS, and garbage‑collection tuning to reduce average response time from 40 ms to under 10 ms.
This guide walks you through installing Jenkins and Nexus via Docker, configuring a Maven hosted repository in Nexus, adding necessary Jenkins plugins and credentials, and creating a Jenkins pipeline that builds a Java project and publishes its artifacts to Nexus, enabling automated CI/CD for your applications.
This guide explains why smaller Docker images improve security, transfer and deployment speed, and provides ten practical methods—including layer minimization, Docker‑squash, slim base images, multi‑stage builds, apt flags, .dockerignore, and optimization tools—to significantly reduce image size.
Spring Boot 3.1.0 introduces automatic configuration for Spring Authorization Server, upgraded HttpClient 5 support, enhanced Testcontainers management, Mockito 5 integration, Docker Compose integration, SSL configuration improvements, and numerous dependency upgrades such as Hibernate 6.2 and Jackson 2.15, all aimed at simplifying modern Java backend development.
This article explains how Docker can create isolated, reproducible local development environments, outlines its advantages, guides through installation pitfalls like WSL2 kernel updates and BIOS virtualization settings, and demonstrates running an Nginx container while highlighting further challenges such as file mapping and custom Dockerfile creation.
This guide explains why Nginx proxying to an HTTP backend causes the browser URL to change, how to fix the redirect by using HTTPS, and how to achieve session consistency across multiple Tomcat instances by integrating Memcached for shared session storage.
The article reviews DataEase, a Chinese open‑source business‑intelligence platform that offers a low‑learning‑curve interface, extensive data‑source support, built‑in template marketplace, and Docker‑based one‑command installation, making data visualization and dashboard creation accessible to a broad range of users.
This article provides a detailed tutorial on designing CI/CD pipelines using Jenkins, GitLab webhooks, and GitOps practices, covering single- and multi-application workflow designs, Jenkinsfile configurations for build, test, SonarQube scanning, Docker image creation, and Kubernetes deployment with Helm.
This article compares Elasticsearch and ClickHouse for log analytics by detailing their architectures, setting up Docker‑Compose stacks, ingesting synthetic syslog data with Vector, running equivalent queries, and measuring performance, revealing ClickHouse’s superior speed in most scenarios.
This tutorial explains what a PHP container is, why containers are useful for modern DevOps, and provides step‑by‑step instructions—including Dockerfile creation, image building, and container execution—to package a PHP 7.4 application with Nginx using Docker.
This article explains the risks of using default JVM thread and memory parameters in containers, presents experimental data on ParallelGCThreads, and provides concrete recommendations for heap, off‑heap, and Metaspace settings across different container CPU and memory sizes.
This guide walks you through registering for Alibaba Cloud, enabling Function Compute and NAS, creating a Stable Diffusion application from a template, configuring the admin console, uploading the model, optionally building a custom Docker image, and troubleshooting common issues, all with step‑by‑step instructions and code examples.
This article explains the fundamentals of Linux network namespaces and bridge devices, showing how they isolate resources, form hierarchical PID trees, and enable inter‑namespace communication for container platforms like Docker and Kubernetes.
This article explains why microservice architecture is preferred over monolithic applications, outlines a clear learning roadmap, and details essential components such as Docker, container orchestration, API gateways, load balancing, service discovery, event buses, logging, monitoring, distributed tracing, persistence, caching, and cloud providers.
The article traces the evolution from manual, error‑prone deployments to fully automated DevOps practices, explaining how code‑centric approaches such as Infrastructure as Code, Environment as Code, Orchestration as Code, Document as Code and Pipeline as Code improve productivity, reliability, consistency and platform scalability across cloud‑native environments.
This guide demonstrates how to decouple data change logging from business logic in a SpringBoot application by leveraging MySQL binlog monitoring with Canal, forwarding change events through RabbitMQ, and persisting both new and old record states using Docker‑compose, configuration files, and Java client code.
The article traces the evolution from cumbersome manual deployments to modern automated, code‑driven practices such as Infrastructure as Code, Environment as Code, Orchestration as Code, and Pipeline as Code, highlighting tools like Ansible, Terraform, Docker, Kubernetes, and Jenkins to improve productivity, reliability, and scalability in DevOps operations.
This tutorial walks through setting up a CentOS 7 environment, installing Docker CE, deploying Jenkins in a Docker container, configuring Maven and required plugins, creating a Jenkins pipeline that builds a SpringBoot project, packages it into a Docker image via a Dockerfile, and runs the container automatically, providing full end‑to‑end CI/CD automation.
This article explains why a UDP service listening on 0.0.0.0 inside a Docker bridge network becomes unreachable, analyzes packet captures and kernel routing behavior, and provides practical solutions such as using TCP, binding to a specific interface, or enabling IP_PKTINFO on the socket.
This article compares Elasticsearch and ClickHouse as log‑analytics solutions, detailing their architectures, node roles, data ingestion pipelines, query capabilities, and benchmark results, ultimately showing ClickHouse’s superior performance in most tested scenarios.
Apache OpenWhisk is an open‑source, distributed serverless platform that runs functions in Docker containers, supports multiple programming languages, can be deployed on various cloud or on‑premise environments such as Kubernetes, and offers seamless integration with popular services, scalable execution, and resource‑efficient operation.
This guide explains how Docker simplifies local development by providing isolated, reproducible environments, outlines the key advantages, walks through installing Docker Desktop (including WSL2 kernel and BIOS virtualization fixes), and demonstrates running an Nginx container while highlighting remaining challenges such as command availability and service networking.
This article walks you through downloading the MySQL 5.7 Docker image, configuring IPv4 networking, launching the container with proper volume mounts, troubleshooting common startup errors, verifying the setup, and discussing production‑grade considerations such as data persistence, memory isolation, and scaling.
This tutorial explains how to use Jenkins shared libraries to consolidate repetitive pipeline code, set up Jenkins with Docker Compose, define reusable Groovy methods, create Docker build files, and configure pipeline jobs for maintainable, version‑controlled CI/CD workflows.
This article provides a comprehensive, step‑by‑step tutorial on what XXL‑JOB is, why a distributed scheduling platform is needed, how to install it with Docker, integrate it into a Spring Boot project, configure executors, implement sharding, ensure idempotency, and run a real‑world video transcoding use case.
This article provides a comprehensive guide to installing GitLab Runner on various platforms, explains version and Docker requirements, details registration types and token retrieval, and presents both interactive and non‑interactive registration commands along with common runner commands and a sample pipeline configuration.
Learn how to set up a complete CI/CD pipeline on CentOS 7 by installing Docker and Jenkins, configuring Maven, creating a Jenkins job, and using a Dockerfile to automatically build and run a Spring Boot application with a single click.
This guide walks you through installing Nginx Proxy Manager via Docker, configuring its web UI, setting up a reverse proxy for the admin panel, and securing it with a Let's Encrypt SSL certificate, all without needing deep Nginx knowledge.
This step‑by‑step guide shows how to install Docker and Jenkins on CentOS, configure Jenkins plugins and Maven, create a freestyle job that pulls a Spring Boot project from Git, builds it with Maven, packages it into a Docker image, and runs the container automatically.
The author shares a personal journey of using ChatGPT as a knowledge engine, illustrating six key benefits—answering complex questions, applying Occam's razor, simplifying concepts for beginners, enabling generative learning, fostering T‑shaped expertise, and mastering effective prompting—through concrete examples ranging from metadata explanations to Docker deployment steps.
This guide introduces RabbitMQ, explains how to install it with Docker, covers basic and advanced producer/consumer usage including acknowledgments, durability, QoS, bindings, and exchange types, and discusses a typical Python reconnection problem, providing a practical overview for backend developers.
This tutorial introduces Nginx Proxy Manager, a visual reverse‑proxy management interface, and provides step‑by‑step instructions for installing it via Docker‑Compose, configuring domains, setting up SSL with Let’s Encrypt, and managing proxy hosts through its web UI.
This tutorial walks through enabling Docker remote connections on Linux and Windows, installing and configuring the IntelliJ IDEA Docker plugin, adding a docker‑maven‑plugin to a Spring Boot Eureka project, building Docker images, creating containers with port mapping, and setting up one‑click deployment for rapid backend development.
This article explains how to configure Nginx to split access logs by day using the $time_iso8601 variable, align log timestamps with the local timezone via Docker‑Compose or Dockerfile settings, and introduces the GoAccess tool for visual log analysis.
This article describes how to identify abnormal Nginx requests caused by bots like AhrefsBot and Scrapy, and provides a step‑by‑step Docker‑based solution that includes a custom Nginx configuration, agent‑deny rules, and optional Alibaba Cloud security‑group IP blocking to prevent memory spikes.
Earthly is an advanced Docker image build tool that replaces Dockerfiles with Earthfiles, combining Makefile and Dockerfile concepts, offering multi‑stage, multi‑platform builds, syntax highlighting, extended commands like SAVE, GIT CLONE, and UDCs, and seamless CI integration for faster, more reusable container workflows.
This guide walks you through installing Nginx Proxy Manager via Docker, configuring reverse proxy hosts, obtaining Let’s Encrypt SSL certificates, and securing access with HTTPS, all using a user‑friendly web interface suitable for beginners.
This article explains how to design and implement a real‑time, multi‑tenant site search system by migrating data from MySQL to Elasticsearch using Kafka and MySQL binlog, covering architecture decisions, data schema, Docker deployment, and core SpringBoot/Kotlin code for event collection and indexing.
This article explains how the team streamlined Dagster Cloud's serverless deployment pipeline by replacing slow Docker‑image builds with a fast‑path using PEX files, S3 storage, and optimized GitHub Actions, reducing end‑to‑end deployment time from over three minutes to just forty seconds.
While containers and Docker dominate modern infrastructure, this article critically examines whether MySQL should be containerized, highlighting data safety, performance, statefulness, and resource isolation concerns, and offering practical strategies such as separating data from the program, using lightweight or distributed databases, and appropriate deployment choices.
This guide explains step‑by‑step how to add, change, or remove port mappings for Docker containers by stopping the container, editing hostconfig.json (and optionally config.v2.json), and restarting the container, with commands for both Linux and Docker Desktop for Mac.
This guide walks through the background of MySQL read/write splitting, records troubleshooting steps for an unexpected slave crash, explains the two splitting models, and provides detailed commands and configuration examples for using Keepalived to ensure high availability of the slave node.
RunnerGo is an Apache‑2.0 licensed full‑stack testing platform built with Go and React that provides API testing, scenario automation, performance testing, and rich reporting, and the article details its features, technology stack, architecture, installation steps, configuration files, and open‑source repositories.
This guide walks through setting up a Windows development environment, enabling Hyper‑V, installing Docker Desktop, building a SpringBoot JAR with Maven, creating Dockerfiles, running containers via IDEA and the command line, and finally deploying the image to a Linux server with proper volume and port mappings.
nginxWebUI provides a graphical interface for configuring and managing Nginx, supporting HTTP/TCP forwarding, reverse proxy, load balancing, SSL automation, multi‑server clustering, Docker deployment, systemd startup, and detailed usage instructions, enabling administrators to generate and control nginx.conf without manual coding.
This tutorial walks through setting up a CentOS 7 environment, installing Docker and Jenkins, configuring Jenkins plugins and Maven, creating a freestyle job that pulls a Spring Boot project from Gitee, builds it with Maven, packages it into a Docker image via a Dockerfile, runs the container, and verifies the deployment, providing all commands and screenshots for a complete CI/CD pipeline.
This article provides a step‑by‑step guide to Docker, covering its core concepts, differences between virtual machines and containers, installation methods, Dockerfile syntax, building and running images, and best‑practice recommendations for containerized deployments.
Spug is a lightweight, agentless automation platform for small and medium enterprises that integrates host management, batch execution, online terminal, deployment, scheduling, configuration, monitoring and alerting, and the article provides step‑by‑step Docker and docker‑compose installation instructions to set up the system.
The article reviews the latest AI breakthroughs—including Baidu’s Wenxin Yiyan launch, OpenAI’s multimodal GPT‑4, Google’s PaLM API, Microsoft’s super‑computer investment—and also covers Docker’s paid‑plan warning, the US demand for TikTok’s sale, and a Stack Overflow technology survey.
This article demonstrates how to package a NestJS-based microservice architecture into Docker images, build and run them individually, and orchestrate multiple services using Docker Compose, covering Dockerfile multi-stage builds, port mapping, IP binding, and practical deployment steps for Node.js backend services.
The article examines why running MySQL in Docker containers often leads to data‑security, performance, state, and resource‑isolation problems, outlines practical mitigation strategies, and identifies scenarios where containerizing MySQL can still be viable.
This article introduces K3s, the CNCF‑certified lightweight Kubernetes distribution, explains its core features, walks through installing a local cluster, adding nodes, deploying an Nginx service with ingress, and compares K3s to full‑size K8s to help decide when to use it.
This article provides a step‑by‑step guide to creating a CI/CD pipeline for a MERN stack application using Jenkins on Azure, covering prerequisites, Azure VM provisioning, Jenkins installation, pipeline configuration with a Jenkinsfile, Docker image building, and deployment to Docker Hub.
This article explains how to set up Docker on Windows, create a Dockerfile for a Spring Boot microservice, build the image with Maven and IDEA, test the container, and finally export, transfer, and run the image on a Linux server with proper volume and port mappings.
This tutorial walks you through building a complete automated deployment pipeline from scratch, covering project setup on GitHub, Dockerized Tomcat and Jenkins containers, GitLab CI vs Jenkins comparison, Jenkins job configuration, webhook triggers, and shell scripting for continuous integration and delivery.
This article examines why running MySQL in Docker containers often leads to data‑security risks, performance bottlenecks, state management issues, and resource‑isolation problems, while also outlining scenarios where containerization can still be viable and offering practical mitigation strategies.
This guide explains how to decouple business logic in a SpringBoot application by using Canal to listen to MySQL binlog changes, forwarding those events through RabbitMQ, and processing them with a Java client to record both new and old data for insert, update, and delete operations.
This article introduces the php‑ext‑xlswriter C extension for PHP, outlines its features, shows how to install it (including Docker commands), compares its speed with PHPSpreadsheet and PHP_XLSXWriter, and provides complete sample code for generating large Excel files efficiently.
This article introduces Docker, explains its benefits, and walks through step‑by‑step optimizations—including using lightweight Alpine base images and multi‑stage builds—to reduce a React app’s Docker image size from over a gigabyte to just a few megabytes.
The article introduces Just, a command‑line tool that automatically reloads source changes, builds native or Docker images for Spring Boot applications, supports Maven/Gradle, offers run, build, format, and kill sub‑commands, and provides installation instructions for macOS, Windows, and Linux.
This article explains the trade‑off between throughput and pause time in JVM garbage collection, details how the ParallelGCThreads, ConcGCThreads, and CICompilerCount parameters are calculated and affect performance, presents experimental results, and provides concrete configuration recommendations for both on‑heap and off‑heap memory in containerized Java applications.
This article describes how to dramatically reduce Jenkins‑based Docker build times for a BI project by analyzing the build pipeline, enabling Docker layer and application‑level caches, persisting node_modules with BuildKit, and applying minimal configuration changes that cut build duration from over 20 minutes to around four minutes.
This article explains why an Nginx reverse‑proxy configuration that proxies HTTPS requests to a backend server causes the browser URL to change, how to fix the redirect by using HTTPS in the proxy, and how to achieve session consistency across multiple Tomcat instances by deploying Memcached with Docker and adjusting Tomcat’s session manager.
This article provides a comprehensive guide to Docker container networking, covering the default networks, the four network modes (bridge, container, host, none), Linux network namespaces, veth pair creation, and practical container operations such as hostname configuration, DNS settings, port mapping, and custom bridge setup.
This article presents the architecture, technology choices, and practical implementation details of FairPushy—a Dart‑driven backend and Flutter dynamic‑update platform—covering server development, concurrency handling, ORM integration, automated build pipelines, and deployment strategies for seamless hot‑reloading of mobile applications.
This article details how Zhuanzhuan transformed its testing infrastructure from a handful of monolithic servers to a Docker‑driven, tag‑routed dynamic and stable environment, addressing resource shortages, waste, and stability issues while achieving significant reductions in deployment time, resource consumption, and user‑reported problems.
This article walks through setting up a local MySQL cluster, configuring Ngrok, deploying Bytebase via Docker, enabling GitOps integration with GitHub, and managing SQL schema changes through automated pull‑request workflows, providing code snippets and detailed screenshots for each step.
This guide walks through setting up a Jenkins container to build and deploy a Spring Boot application, creating Docker and Docker‑Compose configurations, integrating Nginx as a reverse proxy, and automating the CI/CD workflow with detailed scripts and best‑practice recommendations.
This article details how Zhuanzhuan’s testing environment progressed from a handful of static machines to a Docker‑driven dynamic‑and‑stable architecture, addressing resource shortages, stability issues, and operational inefficiencies through IP routing, tag routing, and extensive automation, ultimately achieving significant reductions in resource usage, deployment time, and user‑reported problems.
iQIYI’s video transcoding team cut its Docker image size from 18 GB to 9 GB and build time from 30 minutes to under five by layering differential builds, on‑demand downloads, library deduplication, node pre‑warming with gray releases, and P2P distribution via Dragonfly, all without requiring developer changes.
This article provides a comprehensive, hands‑on tutorial for configuring Alibaba Canal and its client‑adapter to capture MySQL binlog changes and synchronize them into Elasticsearch, covering environment setup, Docker commands, YAML configuration files, index mapping, adapter startup, and common troubleshooting scenarios.
This guide shows how to decouple change‑recording logic in a SpringBoot application by using Alibaba Canal to listen to MySQL binlog events, forwarding them through RabbitMQ, and persisting both new and old row data for insert and update operations.
This article details how the Omega platform reduced compilation time by up to 60% by adding Maven -am -pl flags, leveraging GoTemplate custom functions, and adjusting GitLab‑CI variables, providing a step‑by‑step verification of each attempt and the final solution.
This article explains how to select the proper base image (Alpine or Debian), decide between JDK and JRE, choose Oracle or OpenJDK, handle graceful shutdown signals in Docker, configure memory limits across JDK versions, manage DNS caching, and optionally compile Java applications to native binaries with GraalVM.
This guide walks through setting up a three‑host Linux environment, using Docker, hping3, sar, tcpdump and iptables to reproduce a SYN‑Flood DDoS attack, analyze its impact with network tools, and apply kernel and firewall tweaks to mitigate the attack.
This article investigates how containers and Kubernetes Pods differ and overlap by examining their underlying Linux namespaces, cgroup hierarchies, and runtime specifications, then demonstrates how to emulate a Pod using only Docker commands and shared resources.
This article explains Docker’s lightweight container engine, its goals, core concepts such as images, containers, and repositories, compares containers to virtual machines, introduces Dockerfile, cgroups, Docker Compose, Docker Machine, and provides an overview of Kubernetes architecture and components, highlighting their role in cloud‑native environments.
This article introduces Uptime Kuma, an open‑source monitoring tool, and provides step‑by‑step instructions for installing it via Docker or manually, configuring monitors, and using its dashboard, highlighting its simplicity, visual appeal, and support for multiple services and notification methods.
This article explains how to combine Spring Boot with Micrometer, Prometheus, and Grafana for metrics collection and visualization, and provides Maven dependencies, configuration snippets, and Docker commands to deploy a fully monitored backend service using Docker containers.
Just is a zero‑configuration command‑line tool that automatically reloads changed source code, rebuilds Spring Boot applications, and can generate native binaries or Docker images, offering developers a streamlined workflow for Java backend projects.
This article introduces Elasticsearch as a scalable distributed search engine, compares it with Solr, walks through local, Docker, and Kubernetes installation, explains its document‑oriented data model, demonstrates CRUD operations via REST API, and shows how to integrate it with Spring Boot using the official Java client.
The article walks readers through building a minimal Docker‑like container runtime entirely in shell, explaining and demoing Linux namespaces, cgroups, and OverlayFS for isolation, resource control, and layered filesystems, and culminates in a concise Bocker script that implements core Docker commands.
This article introduces Rancher as a comprehensive container management platform, explains its API server capabilities, monitoring and alerting features, provides step‑by‑step Docker‑based installation instructions, and demonstrates how to bind a Kubernetes cluster, deploy applications, and view pod logs through the Rancher UI.
This guide walks you through installing K9s on Windows, Linux, and Docker, explains its core features like XRay, Pulse, and Popeye, and provides essential hot‑key shortcuts for efficient Kubernetes cluster management using a terminal UI.
This guide shows how to set up Zipkin with Docker‑Compose, configure Elasticsearch storage, and integrate the zipkin and zipkin‑transport‑http npm packages into a Node.js app—using either ExplicitContext or the simpler Zone‑Context—to collect, send, store, and visualize OpenTracing‑compatible distributed traces.
This article explains Linux signal fundamentals, the role of Dockerfile ENTRYPOINT and CMD directives, and demonstrates with Go and shell examples how using the exec form enables containers to receive termination signals for clean shutdowns instead of being force‑killed.
This article presents a comprehensive course syllabus covering Docker, Jenkins, and Kubernetes fundamentals, advanced operations topics, IT career development, and provides downloadable teaching materials such as Dockerfiles, Helm charts, and deployment scripts for hands‑on practice.
This article details how to dramatically reduce Jenkins‑triggered Docker build times for a BI project by enabling Docker layer and application‑level caches, configuring webpack caching, and leveraging BuildKit mount‑type caches to persist node_modules, achieving an 80% speedup with minimal configuration changes.
This article explains why Java applications running in Kubernetes containers are often terminated with OOMKilled (exit code 137), analyzes the underlying JVM memory‑limit mismatches, and provides practical solutions using cgroup‑aware JVM flags and memory‑tuning techniques.
This article walks beginners through the fundamentals of DevOps by outlining a practical five‑step process for creating a CI/CD pipeline, covering tools for continuous integration, source control, build automation, web server deployment, test coverage, and optional extensions such as containers and middleware automation.
The article reproduces the AttachNotSupportedException when Java runs as PID 1 in a container, explains the JVM attach workflow and LinuxThread model, and provides practical workarounds such as creating .attach_pid files, enabling StartAttachListener, or using newer JDK images.
