For more information, see the Kubernetes Gateway API documentation.

Before you begin

  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]['hostname','ip']}")
echo $INGRESS_GW_ADDRESS
    kubectl port-forward deployment/gloo-proxy-http -n gloo-system 8080:8080

Set up host redirects

  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/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 -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

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

kubectl delete httproute httpbin-redirect -n httpbin