Deploy the strimzi-drain-cleaner helm chart on Azure Managed Openshift Service

Question

Pulumi · Accepted Answer

Deploying the Strimzi Drain Cleaner Helm chart on an Azure Red Hat OpenShift (ARO) cluster involves several steps:

1. **Create an ARO Cluster**: We'll need an Azure Red Hat OpenShift cluster to which we'll deploy the Helm chart. We'll use the `azure-native.redhatopenshift.OpenShiftCluster` resource for this.
2. **Install Helm Chart**: Once we have the OpenShift cluster, we will install the Strimzi Drain Cleaner using the `kubernetes.helm.v3.Chart` resource from the Pulumi Kubernetes provider.

### Creating an ARO Cluster

Before we deploy the Helm chart, we need an OpenShift cluster. The `azure-native.redhatopenshift.OpenShiftCluster` resource allows us to provision an ARO cluster. We specify details such as the location, resource group name, cluster properties including network profiles, and so on.

### Installing the Strimzi Drain Cleaner Helm Chart

After provisioning the OpenShift cluster, we use the Pulumi Kubernetes provider to deploy applications using Helm charts. In your case, we want to deploy the Strimzi Drain Cleaner, which assists with node maintenance and preventing message loss in Apache Kafka running on Kubernetes.

### TypeScript Program

Here's the complete TypeScript program that accomplishes the deployment:

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

// Create an Azure Resource Group
const resourceGroup = new azure_native.resources.ResourceGroup("myResourceGroup");

// Provision an Azure Red Hat OpenShift (ARO) cluster
const openshiftCluster = new azure_native.redhatopenshift.OpenShiftCluster("myOpenShiftCluster", {
    resourceGroupName: resourceGroup.name,
    resourceName: "myCluster",
    location: "eastus", // Specify the location where you want to create the cluster
    // Other required properties like master and worker profiles should be specified here
    // For detailed configuration refer to the Pulumi documentation:
    // https://www.pulumi.com/registry/packages/azure-native/api-docs/redhatopenshift/openshiftcluster/
});

// Use Kubeconfig from the provisioned ARO cluster to interact with the Kubernetes API
const kubeconfig = openshiftCluster.kubeconfig.apply(JSON.parse);

// Create a Kubernetes Provider referencing the kubeconfig
const k8sProvider = new k8s.Provider("k8sProvider", {
    kubeconfig: kubeconfig.kubeconfig,
});

// Deploy the Strimzi Drain Cleaner Helm Chart 
const strimziDrainCleanerChart = new k8s.helm.v3.Chart("strimzi-drain-cleaner", {
    chart: "strimzi-drain-cleaner",
    version: "0.1.0", // Use the appropriate chart version
    repositoryOpts: {
        repo: "https://strimzi.io/charts/",
    },
}, { provider: k8sProvider });

// Export the URL to access the deployed Strimzi Drain Cleaner (if applicable)
export const drainCleanerUrl = strimziDrainCleanerChart.getResourceProperty("v1/Service", "my-drain-cleaner", "status").apply(status => status.loadBalancer.ingress[0].ip);
```

This program starts by importing the required modules from Pulumi. Afterward, it creates a resource group where the OpenShift cluster will be deployed. The OpenShift cluster is deployed with minimal configuration for brevity, but you would typically include more configuration details about node sizes, quantities, network profiles, etc.

Following the cluster creation, we extract the kubeconfig, which is used to set up a Kubernetes provider. This provider allows us to interact with the Kubernetes API to deploy Kubernetes resources, such as the Helm chart for the Strimzi Drain Cleaner.

Finally, the `helm.v3.Chart` resource is used to deploy the Strimzi Drain Cleaner Helm chart. The `export` statement at the end makes it easy to get the IP address of the deployed service, although this part is optional and depending on your Helm chart.

Keep in mind that Helm chart deployment properties such as `version`, repository URL, and `chart` name, must be set according to the Strimzi Drain Cleaner chart details that you wish to deploy, and can vary over time. You can typically find these details on the Helm repository that hosts the Strimzi-related charts or the official Strimzi website.