HTTP listeners
ℹ️
If you followed the Get started guide, you already have a gateway named
http
in the gloo-system
namespace of your cluster. This gateway can be used as the main ingress for the apps in your cluster. HTTPRoutes can refer to this gateway independent of the namespace they are in. To create more gateways, use the instructions in this guide.
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Create a gateway resource with an HTTP listener.
kubectl apply -f- <<EOF apiVersion: gateway.networking.k8s.io/v1 kind: Gateway metadata: name: my-http-gateway namespace: gloo-system labels: example: httpbin-mydomain spec: gatewayClassName: gloo-gateway listeners: - protocol: HTTP port: 8080 hostname: mydomain.com name: http allowedRoutes: namespaces: from: All EOF
Setting Description spec.gatewayClassName
The name of the Kubernetes gateway class that you want to use to configure the gateway. When you set up K8sGateway, a default gateway class is set up for you. spec.listeners
Configure the listeners for this gateway. In this example, you configure an HTTP gateway that listens for incoming traffic for the mydomain.com
domain on port 8080. The gateway can serve HTTP routes from any namespace. -
Check the status of the gateway to make sure that your configuration is accepted and no conflicts exist in your cluster.
kubectl get gateway my-http-gateway -n gloo-system -o yaml
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Create an HTTPRoute resource for the httpbin app that is served by the gateway that you created.
kubectl apply -f- <<EOF apiVersion: gateway.networking.k8s.io/v1beta1 kind: HTTPRoute metadata: name: httpbin-mydomain namespace: httpbin labels: example: httpbin-mydomain spec: parentRefs: - name: my-http-gateway namespace: gloo-system rules: - backendRefs: - name: httpbin port: 8000 EOF
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Verify that the HTTPRoute is applied successfully.
kubectl get httproute/httpbin-mydomain -n httpbin -o yaml
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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-my-http-gateway -o jsonpath="{.status.loadBalancer.ingress[0]['hostname','ip']}") echo $INGRESS_GW_ADDRESS
kubectl port-forward deployment/gloo-proxy-my-http-gateway -n gloo-system 8080:8080
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Send a request to the httpbin app and verify that you get back a 200 HTTP response code.
curl -vik http://$INGRESS_GW_ADDRESS:8080/status/200 -H "host: mydomain.com:8080"
curl -vik localhost:8080/status/200 -H "host: mydomain.com"
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: * < date: Fri, 03 Nov 2023 20:02:48 GMT date: Fri, 03 Nov 2023 20:02:48 GMT < content-length: 0 content-length: 0 < x-envoy-upstream-service-time: 1 x-envoy-upstream-service-time: 1 < server: envoy server: envoy
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Optional: If you no longer need the HTTP listener, clean up the resources that you created.
kubectl delete -A gateways,httproutes -l example=httpbin-mydomain