Deploy the k8s-token-rotate helm chart on Azure Managed Openshift Service

Question

Pulumi · Accepted Answer

To deploy the `k8s-token-rotate` Helm chart on an Azure Managed OpenShift Service with Pulumi, you'll need to follow these steps:

1. Create an instance of Azure Managed OpenShift Service.
2. Use the Pulumi Kubernetes provider to deploy the Helm chart to the OpenShift cluster.

Here's how you can achieve this:

### Azure Managed OpenShift Service Cluster

First, you'll want to set up your Azure Managed OpenShift Service (ARO). This is a fully managed OpenShift service provided by Azure which simplifies the deployment and operations of OpenShift.

The `azure-native.containerservice.OpenShiftManagedCluster` resource is used to create and manage an instance of Azure Red Hat OpenShift. This resource includes properties that specify the location of the resource, the version of OpenShift, the size of the master and agent nodes, and some networking details like the virtual network ID.

### Kubernetes Helm Chart

After you've set up the ARO cluster, you'll use Pulumi's Kubernetes provider to deploy Helm charts into the cluster. Specifically, the `kubernetes.helm.v3.Chart` resource from Pulumi's Kubernetes provider allows you to deploy a Helm Chart within the Kubernetes cluster.

Below is a Pulumi program written in TypeScript. This program assumes that you have your Azure and Kubernetes configuration already set up for Pulumi, with the necessary Azure service principal and Kubernetes configuration files.

```typescript
import * as azure from "@pulumi/azure-native";
import * as k8s from "@pulumi/kubernetes";
import * as pulumi from "@pulumi/pulumi";

// Create an Azure Resource Group
const resourceGroup = new azure.resources.ResourceGroup("openshiftResourceGroup", {
    resourceGroupName: "myResourceGroup",
    location: "EastUS", // Replace with your preferred Azure region
});

// Deploy the Azure Red Hat OpenShift (ARO) cluster
const openshiftCluster = new azure.containerservice.OpenShiftManagedCluster("openshiftCluster", {
    resourceName: "myAROCluster",
    resourceGroupName: resourceGroup.name,
    location: resourceGroup.location,
    openShiftVersion: "v4.3", // Specify the required OpenShift version
    // Define the properties for the cluster, such as network profiles, auth profiles etc.
    // You can customize your cluster according to Azure's OpenShiftManagedCluster documentation
    // See https://www.pulumi.com/registry/packages/azure-native/api-docs/containerservice/openshiftmanagedcluster/
});

// Deploy the k8s-token-rotate Helm chart on the ARO cluster using Pulumi's Kubernetes provider
const helmChart = new k8s.helm.v3.Chart("k8s-token-rotate-chart", {
    // Assuming you have your Kubernetes configuration in a file called `kubeconfig`
    // and it's pointed to the Azure OpenShift cluster you created above
    // See https://www.pulumi.com/registry/packages/kubernetes/api-docs/helm.sh/v3/chart/
    resourcePrefix: "k8s-token-rotate", // Optional prefix for resources created by this chart
    chart: "k8s-token-rotate", // The name of the chart
    values: {
        // Chart values to override default configurations
        // Refer to the specific Helm chart documentation for configurable chart values
    },
    // Replace `repoUrl` with the repository URL where your chart is hosted
    repositoryOpts: { 
        repo: "https://example.com/helm-charts", // Specify the Helm chart repository URL
    },
    namespace: "default", // Specify the namespace where the chart will be installed; adjust if needed
}, { dependsOn: openshiftCluster }); // Ensure the Helm chart is deployed after the cluster is ready

// Export the OpenShift cluster's Kubernetes API server address
export const kubeApiServerAddress = openshiftCluster.properties.controlPlaneProfile.fqdn;
```

This program does the following:
- Creates an Azure resource group to contain our OpenShift cluster.
- Defines an instance of Azure Red Hat OpenShift with a specified location and version.
- Uses the Pulumi Kubernetes provider to deploy the `k8s-token-rotate` Helm chart into the newly created OpenShift cluster.

You need to replace `repoUrl` with the actual Helm chart repository URL where `k8s-token-rotate` is hosted. Additionally, replace any placeholder strings like `myResourceGroup`, `myAROCluster`, or configuration options within the `values` block with appropriate values that are relevant to your use case.

After defining this program, you can deploy it using the Pulumi CLI. Make sure you have Pulumi installed and configured with the correct Azure credentials and Kubernetes configuration before running `pulumi up` to execute the deployment.