Challenge - CRD

Write a CRD YAML for a custom resource.

Challenge: a Yedek CRD

In this challenge you'll define a custom resource type called Yedek for the platform team. Developers will request a database backup by writing this object:

apiVersion: platform.sirket.com/v1
kind: Yedek
metadata:
  name: magaza-db
  namespace: magaza
spec:
  veritabani: veri-db
  zamanlama: "0 2 * * *"
  saklamaGun: 30

The CRD's group will be platform.sirket.com, its plural name yedekler, its short name yd; the objects are namespaced.

Exercise CRD header and names

Write the first part of the CRD YAML: apiextensions.k8s.io/v1, CustomResourceDefinition; name yedekler.platform.sirket.com; under spec, group: platform.sirket.com, scope: Namespaced and under names, kind: Yedek, plural: yedekler, singular: yedek, shortNames: [yd].

Show example solution

apiVersion: apiextensions.k8s.io/v1
kind: CustomResourceDefinition
metadata:
  name: yedekler.platform.sirket.com
spec:
  group: platform.sirket.com
  scope: Namespaced
  names:
    kind: Yedek
    plural: yedekler
    singular: yedek
    shortNames: [yd]

Exercise Use the CRD

Write four commands: apply crd.yaml; see the CRD's record (kubectl get crd yedekler.platform.sirket.com); apply yedek.yaml; list the backups in magaza by the short name (kubectl get yd -n magaza).

Show example solution

kubectl apply -f crd.yaml
kubectl get crd yedekler.platform.sirket.com
kubectl apply -f yedek.yaml
kubectl get yd -n magaza

Test yourself

What must this CRD's metadata.name be?
- yedekler.platform.sirket.com
- yedek
- Yedek.platform.sirket.com
- platform.sirket.com
Show answer

yedekler.platform.sirket.com — The CRD name is the plural name joined with the group.
Make the objects namespaced.
```
  scope: ____
```
Show answer
```
  scope: Namespaced
```
Match.

group

platform.sirket.com
plural

yedekler
shortNames

yd
kind

Yedek

Next lesson: Challenge - Operator

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