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Install on Azure Kubernetes Service (AKS)
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 Azure Kubernetes Service (AKS).
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 the Azure CLI
- If you already have
2.0.41or later installed, you can skip to the next section and install
az by following the instructions for your operating system. See the
full installation instructions
if yours isn't listed below. You will need az cli version 2.0.37 or greater.
brew install azure-cli
- Add the azure-cli repo to your sources:
echo "deb [arch=amd64] https://packages.microsoft.com/repos/azure-cli/ wheezy main" | \ sudo tee /etc/apt/sources.list.d/azure-cli.list
- Run the following commands to install the Azure CLI and its dependencies:
sudo apt-key adv --keyserver packages.microsoft.com --recv-keys 52E16F86FEE04B979B07E28DB02C46DF417A0893 sudo apt-get install apt-transport-https sudo apt-get update && sudo apt-get install azure-cli
- If you already have
kubectl versionto check your client version. If the client is within a minor version of the master, then you can skip to the next section and create an AKS cluster
az aks install-cli
Now that we have all the tools, we need a Kubernetes cluster to install Knative.
Configure your Azure account
First let's identify your Azure subscription and save it for use later.
az loginand follow the instructions in the command output to authorize
azto use your account
- List your Azure subscriptions:
az account list -o table
Create a Resource Group for AKS
To simplify the command lines for this walkthrough, we need to define a few environment variables. First determine which region you'd like to run AKS in, along with the resource group you'd like to use.
export LOCATION=eastus export RESOURCE_GROUP=knative-group export CLUSTER_NAME=knative-cluster
Create a resource group with the az cli using the following command if you are using a new resource group.
az group create --name $RESOURCE_GROUP --location $LOCATION
Create a Kubernetes cluster using AKS
Next we will create a managed Kubernetes cluster using AKS. To make sure the cluster is large enough to host all the Knative and Istio components, the recommended configuration for a cluster is:
- Kubernetes version 1.15 or later
- Three or more nodes
- Standard_DS3_v2 nodes
- RBAC enabled
Enable AKS in your subscription, use the following command with the az cli:
bash az provider register -n Microsoft.ContainerServiceYou should also ensure that the
Microsoft.Networkproviders are registered in your subscription. If you need to enable them:
bash az provider register -n Microsoft.Compute az provider register -n Microsoft.Network
Create the AKS cluster!
az aks create --resource-group $RESOURCE_GROUP \ --name $CLUSTER_NAME \ --generate-ssh-keys \ --kubernetes-version 1.15.5 \ --enable-rbac \ --node-vm-size Standard_DS3_v2
Configure kubectl to use the new cluster.
az aks get-credentials --resource-group $RESOURCE_GROUP --name $CLUSTER_NAME --admin
Verify your cluster is up and running
kubectl get nodes
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.
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.
Note: Ambassador, Contour, and Gloo are available as an alternative to Istio. Click here to install Knative with Ambassador. Click here to install Knative with Contour. Click here to install Knative with Gloo.
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. To customize your Knative installation, see Performing a Custom Knative Installation.
To install Knative, first install the CRDs by running the
kubectl applycommand once with the
--selector 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
--selector knative.dev/crd-install=trueflag, 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.
Running a cluster costs money, so you might want to delete the cluster when you're done if you're not using it. Deleting the cluster will also remove Knative, Istio, and any apps you've deployed.
To delete the cluster, enter the following command:
az aks delete --resource-group $RESOURCE_GROUP --name $CLUSTER_NAME --yes --no-wait
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