第4章 Getting started with Knative services

重要

You are viewing documentation for a release of Red Hat OpenShift Serverless that is no longer supported. Red Hat OpenShift Serverless is currently supported on OpenShift Container Platform 4.3 and newer.

Knative services are Kubernetes services that a user creates to deploy a serverless application. Each Knative service is defined by a route and a configuration, contained in a .yaml file.

4.1. Creating a Knative service

To create a service, you must create the service.yaml file.

You can copy the sample below. This sample will create a sample golang application called helloworld-go and allows you to specify the image for that application.

apiVersion: serving.knative.dev/v1alpha1 1
kind: Service
metadata:
  name: helloworld-go 2
  namespace: default 3
spec:
  template:
    spec:
      containers:
        - image: gcr.io/knative-samples/helloworld-go 4
          env:
            - name: TARGET 5
              value: "Go Sample v1"
1
Current version of Knative
2
The name of the application
3
The namespace the application will use
4
The URL to the image of the application
5
The environment variable printed out by the sample application