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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
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
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
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
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