Deploy the kafka-topics-ui helm chart on Azure Kubernetes Service (AKS)

Question

Pulumi · Accepted Answer

To deploy the `kafka-topics-ui` Helm chart on an Azure Kubernetes Service (AKS) cluster, you will need to follow these steps:

1. **Create an AKS Cluster**: Define an AKS cluster resource where your Kafka Topics UI application will be deployed.
2. **Install the Helm Chart**: Once you have your Kubernetes cluster, you will install the `kafka-topics-ui` Helm chart onto the cluster.

Below, I will provide a Pulumi program that creates an AKS cluster and deploys the `kafka-topics-ui` Helm chart on it.

The program is written in TypeScript, and I will give an explanation for each step:

- Define the AKS cluster using the `azure-native.hybridcontainerservice.ProvisionedCluster` class from the Pulumi Azure Native package.
  
- Deploy the `kafka-topics-ui` Helm chart using the `kubernetes.helm.v3.Chart` class from the Pulumi Kubernetes package.

Note that this program assumes you have already set up Pulumi and have the appropriate permissions to create resources in Azure. Additionally, you need to have the Azure Kubernetes Service configured.

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

// Step 1: Create the AKS cluster.
const resourceGroup = new azure_native.resources.ResourceGroup("kafkaRG");

const aksCluster = new azure_native.hybridcontainerservice.ProvisionedCluster("kafkaCluster", {
    resourceGroupName: resourceGroup.name,
    location: resourceGroup.location,
    properties: {
        // Define the properties needed for AKS cluster creation
        // such as the size of the cluster, the Kubernetes version, etc.
    },
});

// Export the kubeconfig.
export const kubeconfig = aksCluster.kubeConfig;

// Step 2: Deploy kafka-topics-ui Helm chart.
const kafkaTopicsUI = new k8s.helm.v3.Chart("kafka-topics-ui", {
    chart: "kafka-topics-ui",
    version: "Your Chart Version", // specify the version of the Helm chart you wish to deploy
    fetchOpts: {
        repo: "Your Helm Chart Repository", // specify the Helm repository that contains the chart
    },
    // You can define custom values for the Helm chart by providing them here.
    // Value overrides would typically include the Kafka broker endpoint and any required configurations.
    values: {
        // Your configuration values go here.
    },
}, { provider: new k8s.Provider("k8sProvider", { kubeconfig: kubeconfig }) });

// Export the Helm chart deployment status.
export const kafkaTopicsUIStatus = kafkaTopicsUI.status;
```

This Pulumi program performs the following actions:

- It provisions a new resource group and an AKS cluster within this group. You need to define the properties for your AKS cluster, such as node size, the number of nodes, and the Kubernetes version you wish to use.
  
- It installs the `kafka-topics-ui` Helm chart onto the AKS cluster. This step assumes you have specified the correct Helm chart version and the repository where the Helm chart is located. You will also need to provide custom configuration values necessary for the Helm chart, like Kafka connection details.

Once the program is ready, you can deploy it using the Pulumi CLI:

```bash
pulumi up
```

The `pulumi up` command will show you a preview of the resources that Pulumi is about to create. Review the changes and select 'yes' to proceed with the resource creation.

After the deployment is successful, you can use the exported `kubeconfig` to interact with your AKS cluster using `kubectl`, and the status of the Kafka Topics UI can also be checked with the exported status.