Redirect requests to a different host.

For more information, see the Kubernetes Gateway API documentation.

Before you begin

  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 redirects

  1. Create an HTTPRoute for the httpbin app. 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/v1
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 -vi http://$INGRESS_GW_ADDRESS:8080/headers -H "host: host.redirect.example:8080"
  
      curl -vi 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
< server: envoy
server: envoy
< content-length: 0
content-length: 0

Cleanup

You can remove the resources that you created in this guide.
  kubectl delete httproute httpbin-redirect -n httpbin