Deploy the ibm-mq-operator helm chart on Azure Kubernetes Service (AKS)

Question

Pulumi · Accepted Answer

To deploy the `ibm-mq-operator` Helm chart on Azure Kubernetes Service (AKS), you will need to perform the following steps:

1. **Create an AKS cluster**: You'll need an AKS cluster where the Helm chart will be deployed.
2. **Install the Helm chart**: Using Pulumi's Helm chart support, you can deploy the `ibm-mq-operator` chart to your AKS cluster.

Below is a TypeScript program using Pulumi which accomplishes these steps.

### Detailed Explanation

#### Prerequisites
Before you get started with Pulumi, you should have the following prerequisites:

- An Azure subscription.
- The Azure CLI installed and configured.
- Pulumi CLI installed.
- Node.js installed, as we're using TypeScript.

#### Creating the AKS Cluster
First, we are going to set up an AKS cluster using the `azure-native:containerservice:KubernetesCluster` resource. This is an azure-native Pulumi resource, which is the direct way to create resources with Pulumi using ARM templates as the provision method.

#### Installing the Helm Chart
After we have a running AKS cluster, we leverage Pulumi’s `kubernetes.helm.v3.Chart` resource to deploy the `ibm-mq-operator` chart. The Helm chart will be sourced from the Helm repository where `ibm-mq-operator` is hosted.

The `kubernetes.helm.v3.Chart` resource allows us to install Helm charts in a Kubernetes cluster. We need to provide the repository URL where the Helm chart is located, and Pulumi will handle the fetching and installation.

#### Pulumi Program

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

// Create a new AKS cluster.
const cluster = new azure.containerservice.KubernetesCluster("aksCluster", {
    // Other required properties, such as resource group, etc., will be determined by your specific setup
    resourceGroupName: "yourResourceGroup",
    location: "West US",
    // Define your cluster configuration here
    identity: {
        type: "SystemAssigned"
    },
    defaultNodePool: {
        name: "aksagentpool",
        count: 3,
        vmSize: "Standard_DS2_v2"
    },
    dnsPrefix: "aksSample",
});

// Export the kubeconfig to access the AKS cluster
export const kubeConfig = pulumi.all([cluster.name, resourceGroup.name]).apply(([clusterName, rgName]) => {
    return azure.containerservice.listManagedClusterUserCredentials({
        resourceName: clusterName,
        resourceGroupName: rgName,
    });
}).apply(credentials => {
    const encoded = credentials.kubeconfigs[0].value;
    return Buffer.from(encoded, 'base64').toString();
});

// Deploy the ibm-mq-operator Helm chart into the AKS cluster
const mqOperatorChart = new k8s.helm.v3.Chart("ibm-mq-operator-chart", {
    chart: "ibm-mq-operator",
    version: "1.0.0", // specify the version you want to deploy
    fetchOpts: {
        repo: "https://charts.your-repo.com/", // replace this with the Helm repo URL for ibm-mq-operator
    },
    // Values to override in the Helm chart
    values: {
        // place your values overrides here, for example
        replicaCount: 2,
    },
}, { provider: new k8s.Provider("k8s-provider", { kubeconfig: kubeConfig }) });

// Export the resources
export const aksClusterName = cluster.name;
export const mqOperatorChartName = mqOperatorChart.getResource("v1/Secret", "ibm-mq-operator-chart");

```

### How to Use the Program

To use the TypeScript program above:

- Save the code in a file named `index.ts`.
- Run `npm install` to install the necessary Pulumi libraries.
- Use `pulumi up` to create the resources in Azure.

This program will:

- Provision an AKS cluster in the provided resource group.
- Use the output of the AKS creation, namely the kubeconfig, as input for setting up the Helm provider.
- Deploy the `ibm-mq-operator` Helm chart to the AKS cluster with the specified version and values.

Remember to replace placeholder values such as `yourResourceGroup` and `https://charts.your-repo.com/` with actual values for your setup. Also, you need to ensure the Helm chart values and version are appropriate for your deployment needs.