Host redirect
Redirect requests to a different host.
For more information, see the Kubernetes Gateway API documentation.
Before you begin
-
Follow the Get started guide to install K8sGateway, set up a gateway resource, and deploy the httpbin sample app.
-
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 $INGRESS_GW_ADDRESS
kubectl port-forward deployment/gloo-proxy-http -n gloo-system 8080:8080
Set up host redirects
-
Create an HTTP route for the httpbin app that you created as part of the Get started guide. In the following example, requests for the
host.redirect.example
domain are redirected to thewww.example.com
hostname, and a 302 HTTP response code is returned to the user.kubectl apply -f- <<EOF apiVersion: gateway.networking.k8s.io/v1 kind: HTTPRoute metadata: name: httpbin-redirect namespace: httpbin spec: parentRefs: - name: http namespace: gloo-system hostnames: - host.redirect.example rules: - filters: - type: RequestRedirect requestRedirect: hostname: "www.example.com" statusCode: 302 EOF
-
Send a request to the httpbin app on the
host.redirect.example
domain and verify that you get back a 302 HTTP response code and the redirect locationwww.example.com/headers
.curl -vik http://$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 remove the resources that you created in this guide.kubectl delete httproute httpbin-redirect -n httpbin