Labels and Annotations

List Traits

The label and annotations traits allows you to append labels and annotations to the component.

# myapp.yaml
apiVersion: core.oam.dev/v1beta1
kind: Application
metadata:
  name: myapp
spec:
  components:
    - name: express-server
      type: webservice
      properties:
        image: crccheck/hello-world
        port: 8000
      traits:
        - type: labels
          properties:
            "release": "stable"
        - type: annotations
          properties:
            "description": "web application"

Deploy this application.

kubectl apply -f myapp.yaml

On runtime cluster, check the workload has been created successfully.

$ kubectl get deployments
NAME             READY   UP-TO-DATE   AVAILABLE   AGE
express-server   1/1     1            1           15s

Check the labels.

$ kubectl get deployments express-server -o jsonpath='{.spec.template.metadata.labels}'
{"app.oam.dev/component":"express-server","release": "stable"}

Check the annotations.

$ kubectl get deployments express-server -o jsonpath='{.spec.template.metadata.annotations}'
{"description":"web application"}