README
¶
Knative Networking with Gloo Edge Cluster Ingress
Warning: Knative support is deprecated in Gloo Edge 1.10 and will not be available in Gloo Edge 1.11
With Knative support enabled, Gloo Edge 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
- Kubernetes v1.11.3. We recommend using minikube or Kubernetes-in-Docker to get a local cluster up quickly.
kubectlinstalled on your local machine.
Install
1. Install glooctl
If this is your first time running Gloo Edge, you’ll need to download the command-line interface (CLI) onto your local machine. You’ll use this CLI to interact with Gloo Edge, including installing it onto your Kubernetes cluster.
To install the CLI, run:
curl -sL https://run.solo.io/gloo/install | sh
(New-Object System.Net.WebClient).DownloadString("https://run.solo.io/gloo/windows/install") | iex
Alternatively, you can download the CLI directly via the github releases page.
Next, add Gloo Edge to your path with:
export PATH=$HOME/.gloo/bin:$PATH
$env:Path += ";$env:userprofile/.gloo/bin/"
Verify the CLI is installed and running correctly with:
glooctl version
2. Install Knative and Gloo Edge 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 Edge to the gloo-system namespace:
glooctl install knative
Check that the Gloo Edge 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 Edge 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
Directories