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DevOps Coach
DevOps Coach
Apr 24, 2026 · Cloud Native

After Years Using Kubernetes, I Finally Grasped CRDs – Build One from Scratch

The article reveals why most Kubernetes engineers use Custom Resource Definitions without truly understanding them, explains how CRDs act as the language that extends the Kubernetes API, and provides a step‑by‑step walkthrough to create a production‑ready DatabaseCluster CRD, interact with it via kubectl and the Python client, and avoid common pitfalls.

API extensionCRDCustomResourceDefinition
0 likes · 17 min read
After Years Using Kubernetes, I Finally Grasped CRDs – Build One from Scratch
Code Wrench
Code Wrench
Nov 17, 2025 · Cloud Native

Unlock Kubernetes Secrets: A Go Source Dive into Its Core Architecture

This article walks readers through Kubernetes’s fundamental architecture by dissecting its Go source code, explaining key concepts such as the API server, controllers, informers, the control loop, Kubelet, and extensibility mechanisms like CRDs and admission webhooks, complete with illustrative diagrams and code snippets.

CRDCloud NativeController
0 likes · 11 min read
Unlock Kubernetes Secrets: A Go Source Dive into Its Core Architecture
php Courses
php Courses
Jun 24, 2025 · Cloud Native

Mastering Kubernetes Operators with Go: A Step‑by‑Step Guide

This comprehensive tutorial walks you through the fundamentals of Kubernetes Operator development using Go, covering core concepts, environment setup, project structure, controller implementation, advanced features, testing, deployment, and performance best practices for cloud‑native applications.

CRDCloud NativeGo
0 likes · 9 min read
Mastering Kubernetes Operators with Go: A Step‑by‑Step Guide
Alibaba Cloud Infrastructure
Alibaba Cloud Infrastructure
Oct 30, 2024 · Cloud Native

Effortlessly Distribute Apps Across Multiple ACK One Clusters

This guide explains how ACK One enables fast, Git‑free distribution of Kubernetes application resources from a single fleet cluster to multiple target clusters, covering the required CRDs, policy definitions, step‑by‑step YAML examples, and migration from single‑cluster to high‑availability multi‑cluster deployments.

ACK OneApplication DistributionCRD
0 likes · 9 min read
Effortlessly Distribute Apps Across Multiple ACK One Clusters
Sohu Tech Products
Sohu Tech Products
Jul 24, 2024 · Cloud Native

Understanding Helm and Kubernetes Operators

The article explains how Helm simplifies deploying complex Kubernetes applications with a single YAML chart but cannot manage runtime operations, while Kubernetes Operators—built on custom resource definitions and webhook logic—automate tasks such as scaling, upgrades, and side‑car injection, offering higher‑level lifecycle management.

Application DeploymentCRDKubernetes
0 likes · 9 min read
Understanding Helm and Kubernetes Operators
Alibaba Cloud Observability
Alibaba Cloud Observability
Jul 4, 2024 · Cloud Native

Mastering AliyunPipelineConfig: A Complete Guide to Modern Log Collection in Cloud Native Environments

This article explains the design, advantages, and detailed configuration of the new AliyunPipelineConfig CRD for Alibaba Cloud Log Service, covering its structure, field specifications, migration from AliyunLogConfig, validation, error handling, and practical examples for Kubernetes log collection.

Alibaba CloudCRDCloud Native
0 likes · 24 min read
Mastering AliyunPipelineConfig: A Complete Guide to Modern Log Collection in Cloud Native Environments
Yang Money Pot Technology Team
Yang Money Pot Technology Team
Feb 27, 2024 · Cloud Native

Implementing SwimLane Isolation with Service Mesh and Kubernetes: Architecture, WASM Filters, and CRD Controllers

This article describes how to use Istio Service Mesh, Kubernetes CRDs, and custom WASM Envoy filters to create isolated swim‑lane call chains that prevent branch conflicts, enable full‑link header propagation, and support features such as Java remote debugging, middleware deployment, and hot code reload.

CRDIstioService Mesh
0 likes · 26 min read
Implementing SwimLane Isolation with Service Mesh and Kubernetes: Architecture, WASM Filters, and CRD Controllers
JD Retail Technology
JD Retail Technology
Feb 20, 2024 · Operations

Measuring Operations Automation Rate and Building a Self‑Coding Automation Platform

This article explains the challenges of manual operations, defines an automation‑rate metric, introduces the Tai‑Shan Kirin platform for self‑coded operational automation, provides step‑by‑step implementation guidance with code examples, and shares a case study demonstrating significant efficiency and stability gains.

Automation MetricsCRDKubernetes
0 likes · 19 min read
Measuring Operations Automation Rate and Building a Self‑Coding Automation Platform
MaGe Linux Operations
MaGe Linux Operations
Dec 13, 2023 · Cloud Native

Demystifying Kubernetes CRDs: Extending the Platform with Custom Resources

This article clarifies common misconceptions about Kubernetes CustomResourceDefinitions, explains the controller pattern, and demonstrates how CRDs enable custom controllers, versioned micro‑services, blue‑green deployments, and standardized management of application concepts within a Kubernetes cluster.

CRDCloud NativeControllers
0 likes · 7 min read
Demystifying Kubernetes CRDs: Extending the Platform with Custom Resources
Cloud Native Technology Community
Cloud Native Technology Community
Dec 11, 2023 · Cloud Native

Key New Features in Kubernetes v1.29: CEL‑based CRD Validation, NodePort Allocation, Sidecar Containers, PreStop Hook, Service Account Token Binding, and More

Kubernetes v1.29 introduces 49 major updates including GA of CEL‑based CRD validation, a stable static‑dynamic NodePort range, default‑enabled SidecarContainers, an Alpha PreStop sleep hook, tighter ServiceAccount token binding, GA resource metrics, component health SLIs, and several other GA features, all of which simplify cluster operation and improve security.

CELCRDKubernetes
0 likes · 17 min read
Key New Features in Kubernetes v1.29: CEL‑based CRD Validation, NodePort Allocation, Sidecar Containers, PreStop Hook, Service Account Token Binding, and More
Efficient Ops
Efficient Ops
Aug 13, 2023 · Cloud Native

Mastering Kubernetes CRDs: How to Define and Use Custom Resources

This article explains what Kubernetes CustomResourceDefinitions (CRDs) are, how they extend the platform without modifying core code, and provides step‑by‑step examples for creating CRDs and custom objects using YAML manifests and kubectl commands.

CRDCustomResourceDefinitionKubernetes
0 likes · 7 min read
Mastering Kubernetes CRDs: How to Define and Use Custom Resources
MaGe Linux Operations
MaGe Linux Operations
Apr 18, 2023 · Cloud Native

Mastering Kubernetes Operators: Best Practices for Reliable Cloud‑Native Applications

This article translates and expands Red Hat's guide on Kubernetes Operators, explaining how operators watch resources, handle reconcile cycles, implement watches, validate and initialize custom resources, manage finalizers, ownership, status, and error handling, and provides practical code examples for building production‑ready operators.

CRDCloud NativeOperator
0 likes · 21 min read
Mastering Kubernetes Operators: Best Practices for Reliable Cloud‑Native Applications
AsiaInfo Technology: New Tech Exploration
AsiaInfo Technology: New Tech Exploration
Nov 21, 2022 · Cloud Native

Zero‑Touch Kubernetes Deployment: A Minimalist, Automated Solution

This article analyzes the challenges of traditional Kubernetes cluster installation, proposes a fully automated, zero‑touch deployment framework that abstracts and packages all required resources, and explores its architecture, implementation using Go, cloud‑edge collaboration with KubeEdge, and future extensions toward CRD‑based operators.

CRDCloud NativeDeployment
0 likes · 22 min read
Zero‑Touch Kubernetes Deployment: A Minimalist, Automated Solution
Alibaba Cloud Native
Alibaba Cloud Native
Oct 13, 2022 · Cloud Native

How OpenSergo Enables Unified Traffic Routing for Cloud‑Native Microservices

This article explains the concept of traffic routing in microservice governance, outlines the challenges of heterogeneous environments, introduces the OpenSergo project as a unified, multi‑language solution, and provides detailed CRD examples and demo steps for implementing tag, canary, and full‑link gray routing in Kubernetes.

CRDKubernetesMicroservices
0 likes · 16 min read
How OpenSergo Enables Unified Traffic Routing for Cloud‑Native Microservices
Alibaba Cloud Native
Alibaba Cloud Native
Oct 9, 2022 · Cloud Computing

OpenKruise v1.3 Highlights: Custom Probes, SidecarSet Upgrades, and Faster Scaling

OpenKruise v1.3 introduces the PodProbeMarker CRD for custom probes, adds new features to CloneSet, WorkloadSpread, Advanced DaemonSet, and SidecarSet—including historical version injection and pod annotation policies—while delivering significant performance gains for large‑scale clusters through queue optimizations and reduced CPU/memory usage.

CRDCustom ProbeKubernetes
0 likes · 12 min read
OpenKruise v1.3 Highlights: Custom Probes, SidecarSet Upgrades, and Faster Scaling
Alibaba Cloud Native
Alibaba Cloud Native
Oct 3, 2022 · Cloud Native

Can AHPA Predict Kubernetes Scaling Before Load Spikes?

This article introduces the Advanced Horizontal Pod Autoscaler (AHPA), explains its three‑stage architecture of data collection, prediction, and scaling, details the RobustScaler forecasting algorithm and CRD‑based deployment, and evaluates its ability to proactively and reactively adjust pod counts with high robustness.

CRDCloud NativeKubernetes
0 likes · 13 min read
Can AHPA Predict Kubernetes Scaling Before Load Spikes?
Efficient Ops
Efficient Ops
Sep 12, 2022 · Cloud Native

Mastering Kubernetes CRDs and Operators: From Basics to Advanced Design

This article explains what Kubernetes CustomResourceDefinitions (CRDs) and Operators are, shows how they enable custom resources and automated lifecycle management, and presents practical YAML examples and a generic big‑data Operator design for cloud‑native environments.

CRDCloud NativeDevOps
0 likes · 12 min read
Mastering Kubernetes CRDs and Operators: From Basics to Advanced Design
MaGe Linux Operations
MaGe Linux Operations
Sep 6, 2022 · Cloud Native

Mastering Kubernetes CRDs: Define and Use Custom Resources

This article explains what Kubernetes CustomResourceDefinitions (CRDs) are, how they extend the platform with user‑defined resources, and provides step‑by‑step examples for creating CRDs, custom objects, and interacting with them via kubectl commands.

CRDCloud NativeCustomResourceDefinition
0 likes · 6 min read
Mastering Kubernetes CRDs: Define and Use Custom Resources
Architect
Architect
Aug 13, 2022 · Cloud Native

Kubernetes Is About APIs, Not Containers: Understanding the API Framework and CRDs

This article explains why Kubernetes’s true value lies in its extensible, declarative API framework rather than containers, illustrates the API types, shows how Custom Resource Definitions act like database tables, and provides practical examples of creating, querying, and managing CRDs with kubectl.

APICRDCloud Native
0 likes · 17 min read
Kubernetes Is About APIs, Not Containers: Understanding the API Framework and CRDs
MaGe Linux Operations
MaGe Linux Operations
Jun 21, 2022 · Cloud Native

How Multus CNI Enables Multi‑Network Pods in Kubernetes

Multus CNI extends Kubernetes by allowing Pods to attach multiple network interfaces through custom resource definitions, detailing its architecture, installation via DaemonSet, CNI configuration, and step‑by‑step examples for creating additional interfaces and verifying network status.

CNICRDKubernetes
0 likes · 13 min read
How Multus CNI Enables Multi‑Network Pods in Kubernetes
IT Architects Alliance
IT Architects Alliance
Jun 12, 2022 · Cloud Native

Why Kubernetes’ Real Power Lies in Its API, Not Just Containers

The article explains that Kubernetes’ core value is its universal, extensible declarative API framework rather than containers, walks through API types, CRD extensions, and uses a fruit‑CRD example to show how CRUD operations map to database concepts, concluding that the API is the true engine of Kubernetes.

APICRDCloud Native
0 likes · 16 min read
Why Kubernetes’ Real Power Lies in Its API, Not Just Containers
21CTO
21CTO
Jun 10, 2022 · Cloud Native

Why Kubernetes’ Real Power Lies in Its API, Not Just Containers

The article explains that Kubernetes’ true value comes from its universal, declarative API framework rather than containers, demonstrates this with a hands‑on CRD example, and uses a database analogy to show how CRDs act like tables while the API behaves like SQL, highlighting extensibility and RBAC.

APICRDCloud Native
0 likes · 16 min read
Why Kubernetes’ Real Power Lies in Its API, Not Just Containers
Alibaba Cloud Native
Alibaba Cloud Native
Mar 14, 2022 · Cloud Native

How OpenKruise Extends Kubernetes Container Runtime Operations

This article explains how OpenKruise, a CNCF sandbox project, overcomes native Kubernetes container‑runtime limitations by integrating with Kubelet and CRI, offering features such as in‑place upgrades, container restarts, image pre‑heating, and a modular architecture that enhances workload management and runtime control.

CRDCloud NativeImage Pre‑heat
0 likes · 13 min read
How OpenKruise Extends Kubernetes Container Runtime Operations
Alibaba Cloud Native
Alibaba Cloud Native
Dec 20, 2021 · Cloud Native

What’s New in OpenKruise v1.0? A Deep Dive into Cloud‑Native Automation Features

OpenKruise v1.0 introduces a suite of cloud‑native enhancements for Kubernetes, including in‑place upgrades for env variables, a new ResourceDistribution CRD for cross‑namespace resource syncing, container launch priority controls, an extended kubectl‑kruise plugin, and numerous optimizations across workloads and controllers.

CRDCloud NativeKubernetes
0 likes · 11 min read
What’s New in OpenKruise v1.0? A Deep Dive into Cloud‑Native Automation Features
Top Architect
Top Architect
Nov 15, 2021 · Cloud Native

Deploying Spring Boot Applications on Kubernetes with Spring Boot Operator

This article explains how to package a Spring Boot application into a Docker image using Jib, install the Spring Boot Operator, and manage the application lifecycle on Kubernetes—including deployment, scaling, graceful shutdown, node affinity, and custom operator configuration—through detailed code examples and YAML manifests.

CRDDockerJib
0 likes · 13 min read
Deploying Spring Boot Applications on Kubernetes with Spring Boot Operator
Alibaba Cloud Native
Alibaba Cloud Native
Oct 25, 2021 · Cloud Native

How OpenYurt Enables Kubernetes‑Native Management of Edge Devices

OpenYurt v0.5.0 introduces a Kubernetes‑native, non‑intrusive standard for managing edge devices, leveraging CRDs to integrate platforms like EdgeX Foundry, and provides components such as yurt‑edgex‑manager and yurt‑device‑controller that enable seamless, declarative edge device lifecycle management within Kubernetes clusters.

CRDCloud NativeEdge Computing
0 likes · 6 min read
How OpenYurt Enables Kubernetes‑Native Management of Edge Devices
High Availability Architecture
High Availability Architecture
Oct 15, 2021 · Cloud Native

Overview of Apache APISIX Ingress and Its Features

This article provides a comprehensive overview of Apache APISIX Ingress, explaining its architecture, comparison with Kubernetes Ingress Nginx, detailed feature set, custom resource definitions, practical deployment scenarios such as traffic splitting and authentication, and future roadmap within the cloud‑native ecosystem.

APISIXCRDCloud Native
0 likes · 12 min read
Overview of Apache APISIX Ingress and Its Features
Alibaba Cloud Native
Alibaba Cloud Native
Jul 26, 2021 · Cloud Native

How Triton Enables Seamless Container Deployment on Alibaba Cloud ACK

This article explains how Zhangmen built the Triton platform on Alibaba Cloud ACK and OpenKruise to automate Kubernetes container releases, detailing the design of the DeployFlow CRD, batch‑wise rollout strategies, canary deployments, UI interactions, and the operators that power continuous delivery.

CRDCloud NativeContainer Deployment
0 likes · 20 min read
How Triton Enables Seamless Container Deployment on Alibaba Cloud ACK
Sohu Tech Products
Sohu Tech Products
Jun 23, 2021 · Cloud Native

Containerizing Stateful Services on Kubernetes: Challenges, Solutions, and Best Practices

This article examines the difficulties of running stateful services such as Redis, etcd, and MySQL on Kubernetes and presents practical solutions—including workload selection, CRD/operator extensions, scheduling strategies, high‑availability mechanisms, performance‑optimized networking and storage, and chaos‑engineering validation—to achieve reliable, high‑performance containerized deployments.

CRDKubernetesNetworking
0 likes · 32 min read
Containerizing Stateful Services on Kubernetes: Challenges, Solutions, and Best Practices
360 Tech Engineering
360 Tech Engineering
Feb 5, 2021 · Cloud Native

KubeVirt Technical Guide: Architecture, Components, Storage, Network, SDK, and Platform Integration

This article provides a comprehensive overview of KubeVirt, a Kubernetes plugin that enables virtual machine management alongside containers, covering its background, technical selection, core concepts, CRDs, component architecture, common operations, storage and networking options, SDK usage, and integration into a private cloud platform.

CRDCloudNativeGo
0 likes · 23 min read
KubeVirt Technical Guide: Architecture, Components, Storage, Network, SDK, and Platform Integration
360 Tech Engineering
360 Tech Engineering
Jan 25, 2021 · Cloud Computing

KubeVirt: Integrating Virtual Machines into Kubernetes – Architecture, Operations, and SDK Usage

This article explains how KubeVirt extends Kubernetes to manage virtual machines, covering the background of OpenStack‑to‑K8s migration, technical selection, KubeVirt architecture, CRDs, components, common operations, storage and networking choices, SDK usage, and practical deployment experiences within a private cloud platform.

CRDCephKubeVirt
0 likes · 23 min read
KubeVirt: Integrating Virtual Machines into Kubernetes – Architecture, Operations, and SDK Usage
Alibaba Cloud Native
Alibaba Cloud Native
Aug 10, 2020 · Cloud Native

How to Build an Application‑Centric Kubernetes Platform with OAM

This article explains how to construct a Kubernetes platform that puts applications first by using the Open Application Model (OAM), covering the required architectural layers, core concepts such as Components, Traits, ApplicationConfiguration, Definition objects, and the practical benefits for platform engineers.

CRDCloud NativeKubernetes
0 likes · 18 min read
How to Build an Application‑Centric Kubernetes Platform with OAM
Manbang Technology Team
Manbang Technology Team
Jun 8, 2020 · Cloud Native

Design and Implementation of a Zookeeper Operator for Kubernetes

This article outlines the design, functional requirements, CRD definition, architecture, deployment, scaling, monitoring, fault‑tolerance, and upgrade strategies of a Zookeeper operator on Kubernetes, including code examples, service configurations, and integration with Prometheus and OAM standards.

CRDCloud NativeKubernetes
0 likes · 18 min read
Design and Implementation of a Zookeeper Operator for Kubernetes
Alibaba Cloud Native
Alibaba Cloud Native
Mar 31, 2020 · Cloud Native

What’s New in OAM v1alpha2? Key Changes and Migration Guide

The OAM v1alpha2 specification, released after three months of iteration, introduces a more Kubernetes‑friendly reference model, replaces ComponentSchematic with Component, embeds full CRDs for workloads and traits, adopts jsonPath for parameter injection, removes variables and consolidates core workloads into a ContainerizedWorkload, while clarifying Scope handling and outlining upcoming enhancements.

Application ConfigurationCRDKubernetes
0 likes · 16 min read
What’s New in OAM v1alpha2? Key Changes and Migration Guide
Alibaba Cloud Native
Alibaba Cloud Native
Sep 24, 2019 · Cloud Native

How Kubebuilder Simplifies Building Custom Kubernetes Controllers and CRDs

This article explains the controller pattern and declarative API in Kubernetes, dives deep into Kubebuilder's architecture—including GVK/GVR, Scheme, Manager, Cache, and Controller components—and provides step‑by‑step guidance with code examples for creating, configuring, and deploying custom resources and their controllers.

CRDControllerGo
0 likes · 24 min read
How Kubebuilder Simplifies Building Custom Kubernetes Controllers and CRDs
Alibaba Cloud Native
Alibaba Cloud Native
Aug 30, 2019 · Cloud Native

Mastering Scheduled Autoscaling in Kubernetes with cronhpa-controller

This guide explains how to install, configure, and verify the open‑source kubernetes‑cronhpa‑controller for periodic pod scaling, demonstrating step‑by‑step commands, CRD definitions, and a demo that reduces resource waste by combining scheduled scaling with cluster‑autoscaler.

CRDKubernetescloud-native
0 likes · 9 min read
Mastering Scheduled Autoscaling in Kubernetes with cronhpa-controller
Cloud Native Technology Community
Cloud Native Technology Community
Jun 25, 2019 · Cloud Native

Kubernetes 1.15 Release Highlights: API Extensions, Admission Webhooks, CSI Improvements, and Cluster Lifecycle Enhancements

The Kubernetes 1.15 release introduces 25 enhancements—including stable, beta, and alpha features—focused on sustainability, API extensibility, admission webhook improvements, cluster lifecycle stability, CSI storage advances, and deprecations, providing a comprehensive overview of the new capabilities and updates.

APIAdmissionWebhookCRD
0 likes · 8 min read
Kubernetes 1.15 Release Highlights: API Extensions, Admission Webhooks, CSI Improvements, and Cluster Lifecycle Enhancements