Deploy the zookeeper-helm-chart helm chart on Azure Kubernetes Service (AKS)

To deploy the Zookeeper Helm chart on Azure Kubernetes Service (AKS), you'll need to complete a few high-level steps:

1. Create an AKS Cluster: You need an AKS cluster to deploy your Helm chart onto. If you've already created an AKS cluster, you can skip this step. Otherwise, you'll need to define the AKS cluster resource in Pulumi.

2. Install Helm and the Zookeeper Chart: After you have your Kubernetes cluster, you will install Helm and deploy the Zookeeper chart.

3. Verify the Deployment: Finally, you will want to verify that your Helm chart was deployed successfully to your AKS cluster.

We'll use the azure-native and kubernetes Pulumi providers. The azure-native provider allows us to interact with Azure resources, such as the AKS cluster. The kubernetes provider enables us to work with Kubernetes resources, such as Helm charts.

The following TypeScript program demonstrates these steps:

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

// Step 1: Creating an AKS cluster
// We'll define a resource group and an AKS cluster.
const resourceGroup = new azure.resources.ResourceGroup("myResourceGroup");

const cluster = new azure.containerservice.ManagedCluster("myAksCluster", {
    resourceGroupName: resourceGroup.name,
    agentPoolProfiles: [{
        count: 1,
        vmSize: "Standard_DS2_v2", // This is a relatively small and inexpensive VM for demonstration purposes.
        mode: "System",
    }],
    dnsPrefix: `${pulumi.getStack()}-kube`,
    // Enable RBAC for more secure access policies
    enableRbac: true,
    // Define the Linux profile for the Kubernetes cluster. This is required for AKS.
    linuxProfile: {
        adminUsername: "adminuser",
        ssh: {
            publicKeys: [{
                keyData: "<YOUR_SSH_PUBLIC_KEY>", // Replace with your SSH public key
            }],
        },
    }
});

// Step 2: Installing Helm and the Zookeeper chart
// Once the AKS cluster is set up, we need to obtain the Kubeconfig to interact with it.
const creds = pulumi.all([cluster.name, resourceGroup.name]).apply(([clusterName, rgName]) =>
    azure.containerservice.listManagedClusterUserCredentials({
        resourceName: clusterName,
        resourceGroupName: rgName,
    })
);

// Extract the Kubeconfig from the Azure credentials.
const kubeconfig = creds.kubeconfigs[0].value.apply(c => Buffer.from(c, 'base64').toString());

// Create a Kubernetes provider instance with the Kubeconfig we obtained from Azure.
const k8sProvider = new k8s.Provider("k8sProvider", {
    kubeconfig: kubeconfig,
});

// Deploy the Zookeeper Helm chart using the Kubernetes provider with Helm.
const zookeeperChart = new k8s.helm.v3.Chart("zookeeper", {
    chart: "zookeeper",
    version: "5.15.0", // Use the specific chart version you need
    fetchOpts: {
        repo: "https://charts.bitnami.com/bitnami", // The repository where Zookeeper Helm chart is hosted
    },
}, { provider: k8sProvider });

// Step 3: Verify the deployment
// Here you would typically include tests or just fetch some output from the Helm chart to ensure it was deployed correctly.
// For this example, we're just exporting the AKS cluster name, but in practice, you'd want to verify
// the running Pods, Services, etc.

// Output the cluster name
export const clusterName = cluster.name;

// Running this program with Pulumi will create the AKS cluster and deploy the Zookeeper Helm chart to it.

Make sure to replace <YOUR_SSH_PUBLIC_KEY> with your actual SSH public key to allow secure access to the cluster nodes.

In this program:

• We create an Azure resource group and an AKS cluster inside it.
• We obtain the necessary credentials to interact with the Kubernetes cluster by using listManagedClusterUserCredentials.
• We create a new instance of the Kubernetes provider, which allows Pulumi to communicate with the Kubernetes cluster using the obtained Kubeconfig.
• We then deploy the Zookeeper Helm chart to the Kubernetes cluster using this provider.

To run this Pulumi program:

1. Ensure you have Pulumi and the necessary cloud provider CLI tools installed and configured.
2. Save the program to a file (for example, index.ts).
3. Run pulumi up within the directory containing the file.
4. Follow the command-line prompts to execute the actions described by the program.

After running the program, Pulumi will confirm that the resources were created and the chart was deployed. You can then use kubectl to interact with your AKS cluster and verify the Zookeeper Helm chart deployment.