This guide walks through registering an OpenAI account, configuring API access, and deploying supporting services such as Docker containers, a Jenkins server, and a Kubernetes cluster, including detailed steps, screenshots, and tips for handling phone verification and activation codes.
While Docker remains popular, a growing ecosystem of container runtimes—such as Podman, LXD, containerd, Buildah, BuildKit, and Kaniko—offers distinct features, security models, and integration options that make them viable replacements for various development and deployment scenarios.
This article explains what Spring Native is, how to set up the required environment, the two main ways to build a native Spring Boot image using either Buildpacks or the GraalVM native-image Maven plugin, and demonstrates container deployment and performance comparison with traditional JVM execution.
This article explains Docker's built‑in container networking, describing the three default networks, the four network modes (bridge, container, host, none), how to inspect and configure them with commands, use veth pairs and network namespaces, and perform common container operations such as port mapping and custom bridge creation.
This guide details Docker's built‑in network drivers, explains the four primary network modes—bridge, host, container, and none—covers creating and managing network namespaces, veth pairs, custom bridges, and common container operations such as port mapping, DNS configuration, and hostname handling.
This article details the architecture, evolution, and technical solutions of the Berserker big‑data platform—including component design, state‑management problems, release strategies, two‑phase commit, RPC handling, routing, message queuing, containerized execution, dependency model redesign, and future roadmap—demonstrating how the system achieved high availability, low latency, and scalable operations.
This article introduces Jumpserver, an open‑source bastion host built with Python/Django, outlines its key features and advantages, and provides detailed online and offline deployment procedures on Linux, including environment prerequisites, Docker setup, configuration files, and essential command‑line operations.
This guide explains why traditional star‑topology VPNs suffer from bandwidth bottlenecks, introduces NAT‑traversal mesh networking, and provides step‑by‑step instructions for deploying a self‑hosted Headscale control server, configuring TLS, setting up DERP relays, installing Tailscale clients on Linux, macOS and Windows, and troubleshooting connectivity.
This article explores the unique challenges of front‑end operations, outlines typical build failures caused by dependency, environment, and permission mismatches, and proposes Docker‑based DevOps solutions to streamline development, testing, and production workflows for full‑stack teams.
Docker, an open‑source platform for lightweight, portable containers, offers numerous practical applications—from deploying software and running minimal Linux distributions to hosting servers, creating custom images, and streamlining development environments—making it a versatile tool that reshapes DevOps and IT workflows.
This article analyzes a Kubernetes‑Docker environment where Java pods encounter “fork: Resource temporarily unavailable” errors, tracing the issue through kernel event logs, ulimit settings, PID limits, and related sysctl parameters, and provides detailed recommendations for kernel and user‑level configuration to prevent such failures.
The Berserker big‑data platform provides a one‑stop data development and governance solution built on over 40 micro‑services, featuring the Archer scheduler with CN and EN nodes, Raft‑based state management, Docker‑isolated task execution, smart routing, and plans to make EN stateless, migrate to Kubernetes, and unify batch and streaming services.
This tutorial provides a complete, step‑by‑step guide to automatically deploy a Spring Boot project on CentOS 7 by installing Docker and Jenkins, configuring Maven and required plugins, creating a Jenkins pipeline, building the Docker image, and running the container, while avoiding common pitfalls.
This guide explains the limitations of traditional star‑topology VPNs, introduces NAT‑traversal and mesh networking, and provides step‑by‑step instructions for installing and configuring the open‑source Headscale control server, setting up clients on Linux, macOS and Windows, deploying DERP relays, using Docker Compose, and debugging network issues.
This article explains Docker's default networks, the four network modes (bridge, host, none, container), how to configure each mode, create custom bridges, use veth pairs, and perform common container networking operations such as port mapping and DNS settings.
This article introduces MinIO as a high‑performance, cloud‑native object storage solution, explains its key features and use cases, provides step‑by‑step Docker installation commands, and demonstrates how to integrate MinIO with Spring Boot through Maven dependencies, configuration, utility classes, service, and controller code.
Learn step‑by‑step how to expose new ports or modify existing ones for Docker containers on macOS, including using the -p flag during container creation, editing hostconfig.json and config files inside the Docker VM, and restarting Docker to apply changes.
Learn practical Dockerfile optimization techniques—including clean build contexts, selecting minimal base images, configuring domestic package mirrors, setting correct timezones, using virtual build environments, minimizing image layers, and consolidating file additions—to dramatically reduce image size, improve build speed, and avoid common pitfalls.
This step‑by‑step guide walks you through deploying the ELK stack—Elasticsearch, Logstash, Kibana, and Filebeat—using Docker on an Ubuntu VM, covering configuration, code examples, common pitfalls, and troubleshooting to enable efficient log collection and analysis.
This guide walks through deploying Hadoop 3.x on a Kubernetes cluster using Helm, covering repository addition, Docker image creation, Helm chart configuration, service adjustments, installation, verification commands, and clean uninstallation, complete with code snippets and screenshots.
Docker containers run from images composed of stacked read‑only layers topped by a writable layer, enabling isolated processes and efficient storage, while commands such as create, run, commit, build, and prune manage lifecycle, and Dockerfiles generate new layers for versioned, portable deployments.
This guide walks through selecting Alpine or Debian base images, deciding between JDK and JRE, picking Oracle or OpenJDK, choosing the appropriate JVM, handling graceful shutdown signals, configuring memory limits across JDK versions, managing DNS cache, and leveraging GraalVM native compilation for Java containers.
This article chronicles Bilibili Live's eight‑year journey from a simple LAMP monolith to a sophisticated microservice architecture, detailing the migration to Swoole‑based services, Docker containerization, Golang adoption, hot‑key handling, request amplification mitigation, and the creation of a high‑performance Envoy‑based gateway.
The article examines Turbopack's claimed performance advantages over Vite, critiques marketing-driven comparisons in open-source tools, and emphasizes the need for transparent, peer-reviewed evaluations in frontend development.
Docker has released a technical preview of Docker+Wasm, partnering with the Bytecode Alliance and WasmEdge to add a containerd shim that runs WebAssembly modules, providing faster startup, smaller binaries, and a new runtime flag, while offering example commands and download links for early adopters.
This comprehensive tutorial walks through preparing hosts, installing Docker and containerd, setting up Kubernetes components, initializing a HA master cluster, configuring networking, deploying the Kubernetes dashboard, NFS storage, Harbor registry, and an Nginx/Keepalived load balancer, all with detailed commands and configuration files.
This guide walks you through creating a complete observability stack—exporting metrics, traces, and logs from a Go web service, collecting them with OpenTelemetry Collector, and storing them in Grafana Mimir, Loki, and Tempo, then visualizing everything on a unified Grafana dashboard.
This article traces the evolution of local debugging from simple Tomcat setups to Kubernetes, compares proxy tools like port‑forwarding, VPN, Telepresence and kt‑connect, and explains kt‑connect's four operation modes with practical command examples for developers.
This guide walks through setting up a one‑click automated deployment pipeline for a Spring Boot application using Docker and Jenkins on CentOS 7, covering Docker installation, Jenkins container setup, required plugins, job configuration, building, testing, and running the project.
This article outlines ten indispensable cloud‑native tools—from Docker and Kubernetes to Serverless, Helm, Ansible, and Wireshark—explaining how each supports modern agile development, improves infrastructure stability, and accelerates digital transformation in post‑pandemic enterprises.
Docker unveils a technical preview of Docker+Wasm, integrating WebAssembly into its container engine via a new containerd shim, offering faster startup, smaller binaries, and a seamless workflow for building and running Wasm applications, while joining the Bytecode Alliance to advance WASI standards.
This tutorial explains how to deploy a MinIO object‑storage service using Docker on Linux/macOS and Windows, configure a Spring Boot backend with MinIO client libraries, and build a Vue + Element‑UI front‑end for various file‑upload methods, providing complete code examples and deployment steps.
Docker announced a technical preview of WebAssembly support that swaps its runC runtime for WasmEdge, promising faster startup and smaller binaries, while investors pour money into Wasm PaaS platforms and the ecosystem expands through initiatives like the Bytecode Alliance.
This article surveys seven Docker alternatives—Podman, LXD, Containerd, Buildah, BuildKit, Kaniko, and RunC—detailing their architectures, key features, security models, and how they differ from Docker for container creation, management, and orchestration.
This article introduces Debezium, an open‑source low‑latency change data capture platform that streams database row changes via Kafka, explains its architecture and common scenarios such as cache invalidation and CQRS, and provides step‑by‑step Docker commands to install ZooKeeper, Kafka, MySQL and the Debezium connector.
This article explains why Kubernetes, the leading container orchestration platform, faces numerous security challenges—from misconfigurations and RBAC pitfalls to malicious Docker images and insecure cluster communication—and offers practical mitigation strategies and best‑practice recommendations.
This step‑by‑step tutorial walks through setting up a multi‑node Kubernetes cluster, configuring high availability with Nginx and Keepalived, installing Docker and containerd, deploying an NFS provisioner, configuring Ingress, and installing a secure Harbor registry using Helm and custom TLS certificates.
This article explains why Docker containers often stop right after starting by examining the Linux PID 1 init process, the behavior of foreground versus daemonized commands in Dockerfiles, and how container runtimes like containerd‑shim and runc manage the container’s main process.
This article provides a comprehensive overview of Docker's client‑server architecture, detailing the roles of Docker Client, Daemon, Engine, jobs, Registry, Graph database, drivers, libcontainer library, and how they collectively enable container creation, image management, networking, and resource control.
This document outlines the background, objectives, scenarios, strategies, TPS estimations, metric definitions, step‑by‑step testing process, component selection, script examples, various execution modes (GUI, CLI, distributed, Docker), and the monitoring architecture built with JMeter, InfluxDB, Prometheus, and Grafana for a large‑scale long‑connection service.
This guide compares the leading container registries—Amazon ECR, Azure Container Registry, Docker Hub, Google Cloud Container Registry, and Harbor—highlighting their features, management capabilities, security scanning, and integration with cloud‑native workflows.
This article introduces Application Performance Management (APM), explains the features of Apache SkyWalking for micro‑service and cloud‑native monitoring, and provides step‑by‑step Docker‑compose installation, agent configuration, and a detailed walkthrough of the SkyWalking UI components.
This article explains what containers are, outlines their advantages such as scalability, portability and DevOps integration, describes popular container images and tools like Docker and Kubernetes, and concludes with a summary of why containerization is essential for agile cloud‑native development.
This article provides a detailed overview of Docker, covering its definition, core components, advantages over virtual machines, common use cases, installation steps, storage configuration, image management commands, network modes, data volumes, private registry setup, backup procedures, and MySQL deployment, all illustrated with practical command examples.
This article explains APM concepts, compares traditional monitoring tools, introduces Apache SkyWalking as a cloud‑native APM solution, details its architecture and core modules, provides step‑by‑step Docker‑based installation of the server and agent, and walks through the SkyWalking UI features for monitoring microservice systems.
This tutorial explains how to set up Graylog for centralized log aggregation using Docker Compose, configure its inputs, and integrate a Spring Boot application with Graylog via Logback GELF, including search syntax examples for effective log analysis.
This step‑by‑step guide walks you through deploying a production‑grade Kubernetes environment, covering node preparation, Docker and containerd setup, kubeadm initialization, high‑availability configuration with Nginx and Keepalived, installing the dashboard, and setting up a private Harbor registry with NFS storage, all using cloud‑native best practices.
This article explains the technical reasons behind Kubernetes' decision to deprecate Docker, covering the introduction of the CRI shim, the rise of containerd, the phased removal of dockershim, and why Docker remains relevant in the cloud‑native ecosystem.
This guide walks you through deploying Apache Flink on Kubernetes, covering runtime modes, building Docker images, creating ConfigMaps and Services, launching session and application clusters, submitting jobs, monitoring the Web UI, and cleaning up resources, all with practical code snippets and commands.
This article walks through diagnosing memory pressure in a multi‑service Spring Cloud Alibaba project, applying JVM tuning, installing GraalVM and Spring Native, configuring Maven and Docker Buildpacks, and finally building and running a native Spring Boot image that starts in milliseconds and consumes only a few dozen megabytes of RAM.
This article explains Docker's built‑in networking, details the four network modes (bridge, host, container, none), shows how to inspect and configure networks with commands like docker network, ip netns and veth pairs, and provides practical examples for port mapping, DNS, and custom bridge creation.
This tutorial explains how to address memory constraints when deploying multiple Spring Boot microservices on a single 2‑CPU, 4‑GB server by applying JVM tuning, installing GraalVM, configuring Spring Native 0.11.1 with Maven plugins, building native images, and deploying them via Docker, achieving startup times in milliseconds and memory consumption around 28 MB.
This article presents a comprehensive microservice architecture roadmap, explaining core concepts, why to adopt microservices, and recommending tools such as Docker, Kubernetes, API gateways, service discovery, logging, monitoring, tracing, data persistence, caching, and cloud providers for building scalable, resilient applications.
A whimsical tale explains how Docker solves application deployment pain by using chroot/pivot_root for filesystem isolation, Linux namespaces to hide host resources, and cgroups to limit CPU, memory, and I/O, illustrating core container technologies with practical code snippets.
The article traces Docker’s evolution from a solution for app packaging and PaaS challenges to a developer‑centric platform that introduced Swarm, highlighting how its container technology reshaped cloud‑native computing and sparked a new ecosystem.
This article examines seven Docker alternatives—Podman, LXD, containerd, Buildah, BuildKit, Kaniko, and RunC—detailing their architectures, key differences, security features, and use‑cases to help DevOps teams choose the right container runtime for their workloads.
This tutorial walks through installing MinIO with Docker on Linux/macOS and Windows, configuring a Spring Boot backend with MinIO Java client, creating a reusable component for file upload, and implementing three Vue/Element‑UI front‑end upload methods, complete with code snippets and screenshots.
This article introduces Spring Native, explains how native images built with GraalVM can reduce Spring Boot startup time to under 100 ms, walks through environment setup, project initialization, Docker image creation, performance testing, and provides troubleshooting tips for common issues.
This article explains the challenges of SaaS private‑cloud deployment, compares source‑code and container deployment, introduces Kubernetes and KubeSphere, outlines required infrastructure, provides Docker and Harbor installation steps, and shows how to use KubeKey to configure and manage a full‑stack private cloud platform.
This article explores how Kubernetes Pods differ from simple containers by examining their underlying implementation, shared network and IPC namespaces, cgroup hierarchies, and the role of the pause sandbox, while also demonstrating how similar pod-like behavior can be achieved using Docker and cgroup tools.
This tutorial walks you through deploying Hadoop 3.x on a Kubernetes cluster using Helm, covering repository setup, Docker image creation, Helm chart customization, service configuration, installation, verification, and clean‑up, with all necessary commands and YAML snippets.
This article provides a detailed tutorial on installing and configuring RocketMQ on a Mac M1 using Docker, covering source‑code and Docker deployments, container setup, broker configuration, dashboard launch, message testing, and common troubleshooting tips.
This article presents a comprehensive roadmap for adopting microservice architecture, explaining its benefits, core concepts, and the essential tools such as Docker, container orchestration, API gateways, load balancing, service discovery, event buses, logging, monitoring, distributed tracing, data persistence, caching, and cloud providers.
This guide explains how to reduce Spring Boot jar size by separating third‑party dependencies from business code, configure Maven for dependency splitting, use Jenkins to detect changes via MD5 checks, and deploy the resulting packages through SSH or Docker‑based pipelines.
This article explains how to transition containerized applications from Docker Compose to Kubernetes using the Kompose tool, covering code examples, generated manifests, volume handling, ingress considerations, and best‑practice recommendations for production deployments.
This tutorial walks you through setting up a complete CI/CD pipeline on CentOS 7 using Docker, Jenkins, and Spring Boot, covering Docker installation, Jenkins container deployment, plugin and Maven configuration, job creation, Dockerfile setup, and automated project build and run.
Cube.js is an open‑source, headless business intelligence platform that provides fast, scalable analytics via REST, SQL, and GraphQL APIs; the article explains its key features, why to choose it, Docker‑based deployment steps, and integration options with various front‑end visualization tools.
This comprehensive guide explains how to create and customize Docker images using Dockerfile, covering base image selection, RUN, COPY, ADD, CMD, ENTRYPOINT, ENV, VOLUME, EXPOSE, and WORKDIR instructions, along with best practices for layer optimization and context handling.
This tutorial walks through using QingCloud Load Balancer to create a fault‑tolerant Kubernetes cluster, covering host inventory, OS preparation, kernel upgrades, Docker and kubeadm installation, master initialization, node expansion, Calico networking, and metrics‑server setup.
This guide walks you through ten practical Docker best‑practice steps—from using deterministic image tags and minimal base images to multi‑stage builds, non‑root users, PID‑1 handling, graceful shutdown, .dockerignore usage, container‑aware JVM settings, and cautious adoption of automation tools—ensuring your Java applications run securely and efficiently in production containers.
This article walks you through the fundamentals of data governance, explains metadata management concepts, compares traditional tools with DataHub, and provides a step‑by‑step tutorial for installing Docker, Python, and DataHub 0.8.20 on CentOS 7, ingesting MySQL metadata, and exploring the UI.
This article provides a comprehensive overview of Docker's evolution, its modern architecture involving containerd, runc, and CRI, explains how containers are created and managed, and offers step‑by‑step instructions for installing, configuring, and operating containerd with the ctr command‑line tool on Linux.
This article demonstrates how to build a lightweight, plug‑and‑play flow‑orchestration system for microservices by installing Nacos with Docker, configuring SpringBoot services with Kafka and Nacos, and using dynamic Nacos listeners to adjust Kafka topics at runtime without redeployment.
This article explains the common frustrations of setting up local development environments—dependency conflicts, environment variables, port clashes, and differing production setups—and shows how Docker, Docker‑Compose, and Laradock can provide a unified, fast, and reproducible solution for PHP/Laravel projects.
This comprehensive guide explains what a Dockerfile is, its four-part structure, common instructions such as ARG, FROM, RUN, COPY, and ENTRYPOINT, and provides detailed examples of building images, running containers, and testing CMD, ENTRYPOINT, command, and args interactions in Kubernetes.
This guide shows how to use iptables to allow only a designated IP address to access a host's port 80, how to apply the same restriction to Docker containers by adding rules to the DOCKER-USER chain, and how to make the settings persistent across reboots.
This guide walks you through using Docker‑Compose to orchestrate a React front‑end, an Express back‑end, and a MariaDB database, covering environment setup, Dockerfile creation, Nginx configuration, container building, and common pitfalls for seamless full‑stack deployment.
This guide introduces MinIO, an open‑source, S3‑compatible object storage written in Go, outlines its key features and deployment via Docker, and demonstrates step‑by‑step integration with Spring Boot to upload files through the MinIO SDK, including configuration, controller code, and testing.
This article outlines a detailed cloud‑native curriculum covering why to learn cloud‑native technologies, the importance of Kubernetes, and a step‑by‑step series of lessons on Go language features, Docker core concepts, Kubernetes architecture, lifecycle management, Istio traffic control, multi‑cluster federation, security guarantees, and a microservices deployment case study.
This guide walks through using Docker Compose to package and launch a complete full‑stack application—including a React front‑end, an Express back‑end, and a MariaDB database—with a single command, covering prerequisites, Dockerfiles, Nginx configuration, and runtime management.
This article explains the common frustrations of setting up local development environments, introduces Docker as a portable container solution, and provides step‑by‑step instructions for installing Docker, Docker‑Compose, cloning Laradock, configuring environment files, Nginx, hosts, and running the containers for a Laravel project.
This comprehensive tutorial walks you through deploying a production‑grade Kubernetes cluster on multiple nodes, configuring Docker and containerd, setting up kubeadm, enabling IPVS, installing a high‑availability Nginx + Keepalived load balancer, deploying the Kubernetes dashboard, and installing a secure Harbor image registry with NFS storage.
This guide walks developers through the evolution from physical and virtual deployments to containerization, explains Kubernetes architecture and core components, demonstrates building a one‑master‑two‑node cluster with kubeadm and Flannel, and details resource management using YAML with imperative and declarative kubectl commands.
An extensive cloud‑native curriculum outlines a systematic learning path that combines foundational theory and hands‑on practice across ten chapters, covering Go language fundamentals, Docker core technologies, Kubernetes architecture, lifecycle management, Istio traffic control, multi‑cluster federation, security, and a microservices deployment case study.
This tutorial explains how to use Docker's build‑time features, layer minimization, multi‑stage builds, and the scratch base to create lightweight, secure, and fast Go container images, demonstrating each step with clear code examples and performance comparisons.
This article introduces the open‑source MinIO object storage system, outlines its high‑performance and cloud‑native features, provides step‑by‑step Docker installation and UI configuration, and demonstrates how to integrate MinIO with Spring Boot for secure file uploads via SDKs.
This comprehensive guide answers common Docker questions, covering its definition, use cases, advantages, differences from virtual machines, core components, installation steps, storage configuration, image management, container creation, networking modes, data volumes, private registry setup, backup, and MySQL deployment.
This guide explains Docker’s built‑in health‑check feature, covering process‑level checks, Dockerfile HEALTHCHECK syntax, runtime options with docker run, and health‑check configuration in docker‑compose, complete with practical examples and troubleshooting tips.
This guide walks through installing Docker and Jenkins on CentOS 7, configuring Jenkins with necessary plugins, setting up Maven, creating a Jenkins pipeline to pull, build, and containerize a Spring Boot project, and finally testing and running the application automatically, providing a complete one‑click CI/CD solution.
This guide explains how to view Docker and Kubernetes container exit codes, lists the most common codes such as 0, 1, 137, 139, and 143, describes what each code means, and shows the commands and scenarios that generate them.
This guide walks through setting up Docker and Jenkins on CentOS, configuring a Spring Boot project, creating a Jenkins pipeline, and automating build, test, and deployment steps to achieve one‑click continuous integration and delivery.
This guide walks through Docker's container networking options, explaining container mode sharing, building and testing overlay networks with Consul, and configuring Macvlan networks for cross‑host communication, complete with step‑by‑step commands and visual diagrams.
This tutorial walks you through creating a simple SpringBoot web application, containerizing it with Docker, and deploying it to a Kubernetes cluster using Pods, Deployments, Services, and Ingress, while highlighting common pitfalls and comparing Java's resource usage to Go.
This tutorial walks through the complete process of configuring MySQL master‑slave replication, preparing Docker containers, configuring MyBatisPlus and ShardingSphereJDBC for read‑write splitting, building a Spring Boot project with the necessary dependencies, generating code, and testing the setup with sample controller endpoints.
This article explains how Kubernetes' kubelet performs container and image garbage collection, details the configurable thresholds and limits, and presents step‑by‑step experiments that demonstrate the impact of different settings on image and container cleanup behavior.
This guide explains Docker's built‑in network types, the four primary network modes (bridge, host, container, none), how the Docker bridge (docker0) works, how to create and manage Linux network namespaces, veth pairs, and custom bridge networks, plus practical commands for inspection and port mapping.
This guide provides step‑by‑step instructions for installing Docker on CentOS and Ubuntu, configuring image accelerators for faster pulls, and using Docker commands to pull, run, list, and clean up images and containers, including tips for handling dangling and intermediate layers.
This article chronicles the evolution of a SaaS product from a simple monolithic SPA through microservice decomposition to containerized deployment, detailing API design, CI/CD pipelines, Spring Cloud and Kubernetes integration, automated tracing, monitoring, and lessons learned for small development teams.
A Docker security flaw allows services bound to the loopback address with -p 127.0.0.1 to be reachable from external hosts due to an iptables rule, and the article explains the issue, demonstrates a proof‑of‑concept, and proposes tightened firewall rules as a fix.
This article explains how Docker containers rely on Linux cgroups and namespaces for resource isolation, details CPU share and quota scheduling, and shows practical commands to inspect cgroup assignments, helping developers optimize container performance on Kubernetes.
