Deploy the pan helm chart on Azure Kubernetes Service (AKS)

Question

Pulumi · Accepted Answer

To deploy the PAN (which I assume stands for Palo Alto Networks) Helm chart on Azure Kubernetes Service (AKS), you'll need to accomplish the following steps:

1. Create an AKS cluster using Pulumi with the `azure-native` provider.
2. Install and configure the Helm chart on the AKS cluster.

Here's how you might write a Pulumi program in TypeScript to do this:

1. **Setting Up Your Project**: Make sure you have Pulumi installed and set up on your local machine. You'll also need to have the Azure CLI installed and logged in to your Azure account where you wish to deploy the AKS cluster.

2. **Choosing the Right Resources**: We would use the `azure-native` provider to create the AKS cluster as it's the Azure-native provider for Pulumi. After the AKS cluster is up and running, we will deploy the PAN Helm chart onto this cluster.

3. **Understanding the Code**:
    - **AKS Cluster**: We'll define a new AKS cluster using the `azure-native:containerservice:ManagedCluster` class.
    - **Helm Chart Deployment**: To deploy the Helm chart, we will leverage the `kubernetes.helm.v3.Chart` class from the `kubernetes` provider.

4. **Pulumi Stack Exports**: The code will include exports for the AKS cluster name and the Kubernetes configuration needed to interact with the AKS cluster using `kubectl` or other Kubernetes tooling.

Here's the full program that puts it all together:

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

const config = new pulumi.Config();
const projectName = pulumi.getProject();

// Step 1: Create an Azure Resource Group
const resourceGroup = new azure_native.resources.ResourceGroup(`${projectName}-rg`);

// Step 2: Create an AKS cluster
const managedCluster = new azure_native.containerservice.ManagedCluster(`${projectName}-aks`, {
    resourceGroupName: resourceGroup.name,
    agentPoolProfiles: [{
        count: 2, // The desired number of agent nodes
        maxPods: 110,
        mode: "System",
        name: "agentpool",
        osType: "Linux",
        vmSize: "Standard_DS2_v2", // The size of the Virtual Machine
    }],
    dnsPrefix: `${projectName}-kube`,
    enableRBAC: true,
    kubernetesVersion: "1.20.9",
    resourceGroupName: resourceGroup.name,
});

// Step 3: Install the Helm Chart onto our AKS cluster
// Note: This assumes that the Helm chart 'pan' is available in a public Helm repository that you have access to
const k8sProvider = new k8s.Provider(`${projectName}-k8s`, {
    kubeconfig: managedCluster.kubeConfigRaw,
});

// Replace 'pan' with the correct chart name, repoistory, and version
const panChart = new k8s.helm.v3.Chart("pan-helm-chart", {
    chart: "pan",
    version: "1.0.0", // Specify the chart version
    fetchOpts: {
        repo: "https://helm-repo-url.com/", // The Helm repository URL where the PAN chart is hosted
    },
}, { provider: k8sProvider });

// Export the AKS cluster name and kubeconfig
export const aksClusterName = managedCluster.name;
export const kubeConfig = managedCluster.kubeConfigRaw;

```

**Explanation**:

- `ResourceGroup`: A resource group is a container that holds related resources for an Azure solution. The `ResourceGroup` class creates a new resource group where all the resources will reside.
- `ManagedCluster`: This class creates a new AKS cluster within the specified resource group.
- `k8s.Provider`: The Pulumi Kubernetes provider uses the kubeconfig from the created AKS cluster to provision resources in it.
- `Chart`: The `Chart` resource is used to deploy a Helm chart named 'pan' onto our AKS cluster.

**Please Note**:
- Ensure the Helm chart version and repository URL are set correctly.
- The AKS version should be supported; check Azure documentation for the latest versions.

With this, your AKS cluster should be provisioned with the desired PAN Helm chart running on top of it. You can see outputs at the end, which will give you access to the AKS cluster name and kubeconfig so you can manage your Kubernetes cluster as needed.