If you want to configure multiple domain names for a Knative service, you can specify the custom domain names and paths in the knative.aliyun.com/serving-ingress annotation. After you modify the annotation, you can use the custom domain names and paths to access the Knative service. This topic describes how to add a custom domain name and a path for a Knative service and use the custom domain name and path to access the Knative service.

Background information

Knative has a default primary domain name. Each Knative service has a unique domain name that is generated based on the primary domain name of Knative, the namespace, and the service name. The format of a domain name is {ksvc-name}.{namespace}.{knative-default-domain}. The default primary domain name of Knative is example.com. If a Knative service named coffee is deployed in the default namespace, the default domain name of the Knative service is coffee.default.example.com. You can modify the default domain name of Knative. For more information, see Use a custom domain name in Knative.

If you want to configure multiple domain names for a Knative service, set the knative.aliyun.com/serving-ingress annotation to the custom domain names and paths. For example, knative.aliyun.com/serving-ingress: cafe.mydomain.com/coffee specifies the domain name cafe.mydomain.com and the path /coffee.
Note After you specify custom domain names and paths, the default domain name is still available.

Procedure

  1. Copy the following content to ingress-domain.yaml.
    apiVersion: serving.knative.dev/v1
kind: Service
metadata:
  name: coffee-mydomain
  annotations:
    knative.aliyun.com/serving-ingress: cafe.mydomain.com/coffee
spec:
  template:
    metadata:
    spec:
      containers:
        - image: registry.cn-hangzhou.aliyuncs.com/knative-sample/helloworld-go:160e4dc8
  2. Create a Knative service.
    kubectl apply -f ingress-domain.yaml
  3. View the information of the Knative service.

    The command output shows that coffee-mydomain.default.example.com is the default domain name of the Knative service. 

    kubectl get ksvc
    NAME              URL                                          LATESTCREATED           LATESTREADY             READY   REASON
coffee-mydomain   http://coffee-mydomain.default.example.com   coffee-mydomain-sbwhz   coffee-mydomain-sbwhz   True
  4. Use the default domain name to access the Knative service.
    curl -H "Host: coffee-mydomain.default.example.com" http://106.15.2**. **
    Hello World!
  5. Use the custom domain name and path to access the Knative service.
    curl -H "Host: cafe.mydomain.com" http://106.15.2**.**/coffee
    Hello World!