knative/

README

Knative Networking with Gloo Cluster Ingress

With Knative support enabled, Gloo will configure Envoy using Knative's Cluster Ingress Resource.

The installation process detailed in this document provides a way of using Knative-Serving without needing to install Istio.

What you'll need

1. Kubernetes v1.11.3. We recommend using minikube or Kubernetes-in-Docker to get a local cluster up quickly.
2. kubectl installed on your local machine.

Install

1. Install Glooctl

If this is your first time running Gloo, you’ll need to download the command-line interface (CLI) onto your local machine. You’ll use this CLI to interact with Gloo, including installing it onto your Kubernetes cluster.

To install the CLI, run:

curl -sL https://run.solo.io/gloo/install | sh

Alternatively, you can download the CLI directly via the github releases page.

Next, add Gloo to your path with:

export PATH=$HOME/.gloo/bin:$PATH

Verify the CLI is installed and running correctly with:

glooctl --version

2. Install Knative and Gloo to your Kubernetes Cluster using Glooctl

Once your Kubernetes cluster is up and running, run the following command to deploy Knative-Serving components to the knative-serving namespace and Gloo to the gloo-system namespace:

glooctl install knative

Check that the Gloo and Knative pods and services have been created:

kubectl get all -n gloo-system

NAME                                        READY     STATUS    RESTARTS   AGE
pod/knative-proxy-65485cd8f4-gg9qq   1/1       Running   0          10m
pod/discovery-5cf7c45fb7-ndj29              1/1       Running   0          10m
pod/gateway-7b48fdfbd8-trwvg                1/1       Running   1          10m
pod/gateway-proxy-984bcf497-29jl8           1/1       Running   0          10m
pod/gloo-5fc9f5c558-n6nlr                   1/1       Running   1          10m
pod/ingress-6d8d8f595c-smql8                1/1       Running   0          10m
pod/ingress-proxy-5fc45b8f6d-cckw4          1/1       Running   0          10m

NAME                           TYPE           CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE
service/knative-proxy   LoadBalancer   10.96.196.217    <pending>     80:31639/TCP,443:31025/TCP   14m
service/gateway-proxy          LoadBalancer   10.109.135.176   <pending>     8080:32722/TCP               14m
service/gloo                   ClusterIP      10.103.179.64    <none>        9977/TCP                     14m
service/ingress-proxy          LoadBalancer   10.110.100.99    <pending>     80:31738/TCP,443:31769/TCP   14m

NAME                                   DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/knative-proxy   1         1         1            1           14m
deployment.apps/discovery              1         1         1            1           14m
deployment.apps/gateway                1         1         1            1           14m
deployment.apps/gateway-proxy          1         1         1            1           14m
deployment.apps/gloo                   1         1         1            1           14m
deployment.apps/ingress                1         1         1            1           14m
deployment.apps/ingress-proxy          1         1         1            1           14m

kubectl get all -n knative-serving

NAME                              READY     STATUS    RESTARTS   AGE
pod/activator-5c4755585c-5wv26    1/1       Running   0          15m
pod/autoscaler-78cd88f869-dvsfr   1/1       Running   0          15m
pod/controller-8d5b85958-tcqn5    1/1       Running   0          15m
pod/webhook-7585d7488c-zk9wz      1/1       Running   0          15m

NAME                        TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)             AGE
service/activator-service   ClusterIP   10.109.189.12   <none>        80/TCP,9090/TCP     15m
service/autoscaler          ClusterIP   10.98.6.4       <none>        8080/TCP,9090/TCP   15m
service/controller          ClusterIP   10.108.42.33    <none>        9090/TCP            15m
service/webhook             ClusterIP   10.99.201.163   <none>        443/TCP             15m

NAME                         DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/activator    1         1         1            1           15m
deployment.apps/autoscaler   1         1         1            1           15m
deployment.apps/controller   1         1         1            1           15m
deployment.apps/webhook      1         1         1            1           15m

NAME                                    DESIRED   CURRENT   READY     AGE
replicaset.apps/activator-5c4755585c    1         1         1         15m
replicaset.apps/autoscaler-78cd88f869   1         1         1         15m
replicaset.apps/controller-8d5b85958    1         1         1         15m
replicaset.apps/webhook-7585d7488c      1         1         1         15m

NAME                                                 AGE
image.caching.internal.knative.dev/fluentd-sidecar   15m
image.caching.internal.knative.dev/queue-proxy       15m

3. Send Requests to a Knative App

Create a Knative App:

# deploy a basic helloworld-go service
kubectl apply -f https://raw.githubusercontent.com/solo-io/gloo/master/test/kube2e/artifacts/knative-hello-service.yaml

Get the URL of the Gloo-Knative Ingress:

export INGRESS=$(glooctl proxy url --name knative-proxy)
echo $INGRESS

http://172.17.0.2:31345

Note: if your cluster is running in minishift, you'll need to run the following command to get an externally accessible url:

export INGRESS=$(glooctl proxy url --name knative-proxy --local-cluster)
echo $INGRESS

http://192.168.99.163:32220

Send a request to the app using curl:

curl -H "Host: helloworld-go.default.example.com" $INGRESS

Hello Go Sample v1!

Everything should be up and running. If this process does not work, please open an issue. We are happy to answer questions on our diligently staffed Slack channel.

Uninstall

To tear down the installation at any point, you can simply run

kubectl delete namespace gloo-system
kubectl delete namespace knative-serving