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"}