CKAD — Custom Resource Definitions & Operators
Custom Resource Definitions & Operators
Kubernetes is extensible by design. You can define new resource types beyond the built-in Pods, Services, and Deployments. This lets teams model their own objects — databases, certificates, message queues — as native Kubernetes resources.
This chapter covers Custom Resource Definitions (CRDs) and the Operator pattern from the Application Environment, Configuration & Security domain.
| Topic | What You’ll Learn |
|---|---|
| Kubernetes API | API groups, versions, how kubectl discovers resources |
| Creating CRDs | CRD structure, schema validation, printer columns |
| Custom Resources | Creating, listing, managing instances of custom resources |
| Operator Pattern | How operators work, real-world examples, finding CRDs |
| CRD vs ConfigMap | When to use CRDs vs ConfigMaps |
| Hands-On Lab | Create a CRD, custom resources, 5 practice questions |
