Deploy the kafdrop helm chart on Azure Managed Openshift Service

Question

Pulumi · Accepted Answer

To deploy the Kafdrop Helm chart on Azure Managed OpenShift Service using Pulumi, you will follow multiple steps:

1. **Set up an Azure Managed OpenShift cluster**: You'll be using the `azure-native.containerservice.OpenShiftManagedCluster` resource to create an Azure Red Hat OpenShift cluster.

2. **Deploy a Helm Chart**: After setting up the cluster, you'll deploy your Helm chart using the `kubernetes.helm.v3.Chart` resource, which is a Pulumi resource for deploying Helm charts to a Kubernetes cluster.

In the code below, I'll demonstrate how to accomplish both steps in a single Pulumi program.

### Detailed Explanation:
- **Create an Azure Managed OpenShift Cluster**: We define an OpenShift managed cluster in a specific location with the necessary profiles for authentication, networking, and agent pool configurations.
- **Install Kafdrop using a Helm Chart**: We declare a Helm chart as a resource, specifying the chart name - in this case, `kafdrop` (ensure the correct chart name and repository URL). The Helm chart resource will be deployed into the OpenShift cluster we created. Kafdrop is a web UI for viewing Kafka topics and browsing consumer groups, so we will be specifying Kafka-related configurations in the values.

**Note**: Before running the Pulumi program, ensure you have the Pulumi CLI installed and configured with Azure credentials, Helm CLI installed locally, `kubectl` configured to access the Azure Managed OpenShift Service, and that the Openshift CLI (`oc`) is installed which might be needed for some Openshift specific configurations.

Now, let's write the Pulumi program in TypeScript:

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

// Replace these variables with the actual values you want to use
const location = "East US"; // Azure region
const resourceGroupName = "kafdropResourceGroup"; // Azure resource group
const openshiftClusterName = "kafdropOpenShiftCluster"; // Name for the OpenShift Cluster
const openShiftVersion = "4.3.0"; // Specify the OpenShift version
// Add other configurations such as networking, authentication, etc., as needed.

// Create an Azure resource group
const resourceGroup = new azureNative.resources.ResourceGroup(resourceGroupName, {
    location: location,
});

// Create the Azure Managed OpenShift cluster
const openshiftCluster = new azureNative.containerservice.OpenShiftManagedCluster(openshiftClusterName, {
    resourceGroupName: resourceGroup.name,
    location: resourceGroup.location,
    // Defining other properties like network profile, master and agent pools, etc.
    openShiftVersion: openShiftVersion,  // Ensure you specify the right OpenShift version you want to deploy
    // Specify other properties as needed
});

// Kubernetes Provider to interact with the OpenShift cluster
const k8sProvider = new k8s.Provider("k8sProvider", {
    // Assuming 'kubeconfig' is obtained from the Openshift cluster after creation
    kubeconfig: openshiftCluster.kubeconfig.apply(kubeconfig => kubeconfig),
});

// Now deploying the Kafdrop Helm chart to the OpenShift cluster
const kafdropChart = new k8s.helm.v3.Chart("kafdrop", {
    chart: "kafdrop",
    // Replace with the specific version you need and repository if not using the stable channel
    version: "latest", // Specify the version of the Kafdrop chart
    fetchOpts: {
        repo: "https://some-helm-repo-url/", // Specify the correct Helm repo URL where Kafdrop chart is hosted
    },
    values: {
        // Specify your values for the Kafdrop chart as needed
    },
}, { provider: k8sProvider });

// Export the OpenShift cluster's kubeconfig and Kafdrop service endpoint
export const kubeconfig = openshiftCluster.kubeconfig;
export const kafdropServiceEndpoint = kafdropChart.getResourceProperty("v1/Service", "kafdrop", "status")
    .apply(status => status.loadBalancer.ingress[0].ip);

```

### How to Run the Program:
- **Step 1**: Save the above code in a file named `index.ts`.
- **Step 2**: Run `pulumi up` to preview and deploy the resources described in the program.

### What Happens When You Run the Program:
- Pulumi will prompt you to confirm the actions before making changes to your cloud infrastructure.
- Upon confirmation, Pulumi will provision an Azure Red Hat OpenShift cluster.
- After the cluster is provisioned, Pulumi will deploy the Kafdrop Helm chart to the OpenShift cluster.
- The `kubeconfig` and the service endpoint to access Kafdrop will be exported as output.

After the Pulumi deployment is complete, you can use the `kubeconfig` to configure `kubectl` or the Openshift client `oc` to interact with your cluster, and use the service endpoint to access the Kafdrop UI in a web browser.