Host redirect

For more information, see the Kubernetes Gateway API documentation.

Before you begin link

1. Follow the Get started guide to install Gloo Gateway, set up a gateway resource, and deploy the httpbin sample app.

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

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

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

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

Set up host redirects link

1. Create an HTTP route for the httpbin app that you created as part of the Get started guide. In the following example, requests for the host.redirect.example domain are redirected to the www.example.com hostname, and a 302 HTTP response code is returned to the user.

     kubectl apply -f- <<EOF
   apiVersion: gateway.networking.k8s.io/v1beta1
   kind: HTTPRoute
   metadata:
     name: httpbin-redirect
     namespace: httpbin
   spec:
     parentRefs:
       - name: http
         namespace: gloo-system
     hostnames:
       - host.redirect.example
     rules:
       - filters:
         - type: RequestRedirect
           requestRedirect:
             hostname: "www.example.com"
             statusCode: 302
   EOF
     

2. Send a request to the httpbin app on the host.redirect.example domain and verify that you get back a 302 HTTP response code and the redirect location www.example.com/headers.

     curl -vik http://$INGRESS_GW_ADDRESS:8080/headers -H "host: host.redirect.example:8080"
     

     curl -vik localhost:8080/headers -H "host: host.redirect.example"
     

   Example output:

     * Mark bundle as not supporting multiuse
   < HTTP/1.1 302 Found
   HTTP/1.1 302 Found
   < location: http://www.example.com/headers
   location: http://www.example.com/headers
   < date: Sat, 04 Nov 2023 01:40:06 GMT
   date: Sat, 04 Nov 2023 01:40:06 GMT
   < server: envoy
   server: envoy
   < content-length: 0
   content-length: 0
     

Cleanup link

You can optionally delete the HTTP route that you created as part of this guide.

  kubectl delete httproute httpbin-redirect -n httpbin