Using declarative files in Knative

A good practice when creating environments is to create declarative definitions for your applications. Knative supports this with the --target flag. For example, if you want to change the previous example into a YAML file, you could use this flag. To do this, run the following command:

$ kn service create api --cluster-local \
--image sergioarmgpl/app2demo \
--port 5000 \
--env MESSAGE="Knative demo v1" \
--revision-name=v1 --target=api.yaml

This command outputs a YAML file with the definition of an API function, without a public endpoint. The output in the api.yaml file will look like this:

apiVersion: serving.knative.dev/v1
kind: Service
metadata:
  labels:
    networking.knative.dev/visibility: cluster-local
  name: api
  namespace: default
spec:
  template:
    metadata:
      annotations:
     ...