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Install on Pivotal Container Service
This guide walks you through the installation of the latest version of Knative using pre-built images.
You can find guides for other platforms here.
Before you begin
Knative requires a Kubernetes cluster v1.15 or newer, as well as a compatible
kubectl. This guide walks you through creating a cluster with the correct
specifications for Knative on Pivotal Container Service.
This guide assumes you are using bash in a Mac or Linux environment; some commands will need to be adjusted for use in a Windows environment.
Installing Pivotal Container Service
To install Pivotal Container Service (PKS), follow the documentation at https://docs.pivotal.io/runtimes/pks/1-1/installing-pks.html.
Creating a Kubernetes cluster
NOTE: Knative uses Istio sidecar injection and requires privileged mode for your init containers.
To enable privileged mode and create a cluster:
- Enable privileged mode:
- Open the Pivotal Container Service tile in PCF Ops Manager.
- In the plan configuration that you want to use, enable both of the
- Enable Privileged Containers - Use with caution
- Disable DenyEscalatingExec
- Save your changes.
- In the PCF Ops Manager, review and then apply your changes.
- Create a cluster.
Access the cluster
To retrieve your cluster credentials, follow the documentation at https://docs.pivotal.io/runtimes/pks/1-1/cluster-credentials.html.
Knative depends on Istio. If your cloud platform offers a managed Istio
installation, we recommend installing Istio that way, unless you need the
ability to customize your installation. For example, the
GKE Install Guide includes the instructions for
installing Istio on your cluster using
If you prefer to install Istio manually, if your cloud provider doesn't offer a managed Istio installation, or if you're installing Knative locally using Minkube or similar, see the Installing Istio for Knative guide.
You must install Istio on your Kubernetes cluster before continuing with these instructions to install Knative.
cluster-local-gateway for serving cluster-internal traffic
If you installed Istio, you can install a
cluster-local-gateway within your Knative cluster so that you can serve cluster-internal traffic. If you want to configure your revisions to use routes that are visible only within your cluster, install and use the
The following commands install all available Knative components as well as the standard set of observability plugins. To customize your Knative installation, see Performing a Custom Knative Installation.
If you are upgrading from Knative 0.3.x: Update your domain and static IP address to be associated with the LoadBalancer
knative-ingressgateway. Then run the following to clean up leftover resources:
kubectl delete svc knative-ingressgateway -n istio-system kubectl delete deploy knative-ingressgateway -n istio-system
If you have the Knative Eventing Sources component installed, you will also need to delete the following resource before upgrading:
kubectl delete statefulset/controller-manager -n knative-sources
While the deletion of this resource during the upgrade process will not prevent modifications to Eventing Source resources, those changes will not be completed until the upgrade process finishes.
To install Knative, first install the CRDs by running the
kubectl applycommand once with the
-l knative.dev/crd-install=trueflag. This prevents race conditions during the install, which cause intermittent errors:
kubectl apply --selector knative.dev/crd-install=true \ --filename https://github.com/knative/serving/releases/download/v0.12.0/serving.yaml \ --filename https://github.com/knative/eventing/releases/download/v0.12.0/eventing.yaml \ --filename https://github.com/knative/serving/releases/download/v0.12.0/monitoring.yaml
To complete the install of Knative and its dependencies, run the
kubectl applycommand again, this time without the
--selectorflag, to complete the install of Knative and its dependencies:
kubectl apply --filename https://github.com/knative/serving/releases/download/v0.12.0/serving.yaml \ --filename https://github.com/knative/eventing/releases/download/v0.12.0/eventing.yaml \ --filename https://github.com/knative/serving/releases/download/v0.12.0/monitoring.yaml
Monitor the Knative components until all of the components show a
kubectl get pods --namespace knative-serving kubectl get pods --namespace knative-eventing kubectl get pods --namespace knative-monitoring
Now that your cluster has Knative installed, you can see what Knative has to offer.
To deploy your first app with the Getting Started with Knative App Deployment guide.
Get started with Knative Eventing by walking through one of the Eventing Samples.
To delete the cluster, follow the documentation at https://docs.pivotal.io/runtimes/pks/1-1/delete-cluster.html.
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