Expose a route on multiple hosts.

For more information, see the Kubernetes Gateway API documentation.

Before you begin link

1. Follow the Get started guide to install Gloo Gateway.

2. Follow the Sample app guide to create a gateway proxy with an HTTP listener and deploy the httpbin sample app.

3. Get the external address of the gateway and save it in an environment variable.

     export INGRESS_GW_ADDRESS=$(kubectl get svc -n gloo-system http -o jsonpath="{.status.loadBalancer.ingress[0]['hostname','ip']}")
   echo $INGRESS_GW_ADDRESS  
     

     kubectl port-forward deployment/http -n gloo-system 8080:8080
     

Set up host matching link

1. Create an HTTPRoute that is exposed on two domains, host1.example and host2.example.

     kubectl apply -f- <<EOF
   apiVersion: gateway.networking.k8s.io/v1
   kind: HTTPRoute
   metadata:
     name: httpbin-match
     namespace: httpbin
   spec:
     parentRefs:
       - name: http
         namespace: gloo-system
     hostnames:
       - host1.example
       - host2.example
     rules:
       - backendRefs:
           - name: httpbin
             port: 8000
   EOF
     

2. Send a request to the /status/200 path of the httpbin app on the host1.example domain. Verify that you get back a 200 HTTP response code.
   

     curl -vi http://$INGRESS_GW_ADDRESS:8080/status/200 -H "host: host1.example:8080"
     

     curl -vi localhost:8080/status/200 -H "host: host1.example"
     

   Example output:

     * Mark bundle as not supporting multiuse
   < HTTP/1.1 200 OK
   HTTP/1.1 200 OK
   < access-control-allow-credentials: true
   access-control-allow-credentials: true
   < access-control-allow-origin: *
   access-control-allow-origin: *
   < content-length: 0
   content-length: 0
   < x-envoy-upstream-service-time: 1
   x-envoy-upstream-service-time: 1
   < server: envoy
   server: envoy
     

3. Send another request to the httpbin app. This time, you send it along the host2.example domain. Verify that the request succeeds and that you also get back a 200 HTTP response code.

     curl -vi http://$INGRESS_GW_ADDRESS:8080/status/200 -H "host: host2.example:8080"
     

     curl -vi localhost:8080/status/200 -H "host: host2.example"
     

   Example output:

     * Mark bundle as not supporting multiuse
   < HTTP/1.1 200 OK
   HTTP/1.1 200 OK
   < access-control-allow-credentials: true
   access-control-allow-credentials: true
   < access-control-allow-origin: *
   access-control-allow-origin: *
   < content-length: 0
   content-length: 0
   < x-envoy-upstream-service-time: 1
   x-envoy-upstream-service-time: 1
   < server: envoy
   server: envoy
     

Cleanup link

  kubectl delete httproute httpbin-match -n httpbin
  

link