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

Question

Pulumi · Accepted Answer

To deploy the kamaji Helm chart on Azure Kubernetes Service (AKS), we'll go through a series of steps using Pulumi with TypeScript. We'll create an AKS cluster and then use the `kubernetes.helm.v3.Chart` resource from the Pulumi Kubernetes provider to deploy a Helm chart onto the cluster. Below is an outline of the process:

1. We'll create a new AKS cluster using the `azure-native:containerservice:ManagedCluster` resource.
2. Once the AKS cluster is ready, we'll configure our Kubernetes provider to point to the new AKS cluster.
3. We'll deploy the kamaji Helm chart on the AKS cluster using the `kubernetes.helm.v3.Chart` resource.

Here is a detailed TypeScript program that accomplishes the deployment:

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

// Step 1: Create an AKS cluster
const resourceGroup = new azure_native.resources.ResourceGroup("resourceGroup", {
  resourceGroupName: "my-aks-rg", // Specify the name of the resource group
  location: "WestUS", // Specify the location for the resource group
});

const cluster = new azure_native.containerservice.ManagedCluster("aksCluster", {
  resourceGroupName: resourceGroup.name,
  location: resourceGroup.location,
  agentPoolProfiles: [{
    count: 1, // Specify the number of nodes in the node pool
    maxPods: 110,
    mode: "System",
    name: "agentpool",
    osType: "Linux",
    vmSize: "Standard_DS2_v2", // Specify the size of the VMs used in the node pool
  }],
  dnsPrefix: "kamaji-aks", // Replace with a unique DNS prefix
  // Assign a service principal or a system-assigned managed identity for the AKS cluster
  identity: {
    type: "SystemAssigned",
  },
  kubernetesVersion: "1.20.7", // Specify the version of Kubernetes to use
  resourceName: "myaksCluster", // Specify the name of the AKS cluster
});

// Step 2: Configure the Kubernetes provider to use the AKS cluster credentials
const creds = pulumi.all([cluster.name, resourceGroup.name]).apply(([name, rgName]) => 
  azure_native.containerservice.listManagedClusterUserCredentials({
    resourceGroupName: rgName,
    resourceName: name,
}));

const k8sProvider = new k8s.Provider("k8sprovider", {
  kubeconfig: creds.kubeconfigs[0].value.apply(x => Buffer.from(x, "base64").toString()),
});

// Step 3: Deploy the kamaji Helm chart on the AKS cluster
const kamajiChart = new k8s.helm.v3.Chart("kamaji-chart", {
  chart: "kamaji",
  version: "0.1.0", // Replace with the specific chart version you want to deploy
  fetchOpts: {
    // Specify the repository containing the kamaji Helm chart
    repo: "https://example.com/helm-charts", // Replace this with the actual Helm chart repository URL
  },
  // Include any custom values you want to override in the `values` property
  // values: {},
}, { provider: k8sProvider });

// Exports the AKS cluster's kubeconfig
export const kubeconfig = creds.kubeconfigs[0].value;
```

This program will create a new resource group and an AKS cluster within that group, then use Pulumi's built-in capabilities to retrieve the kubeconfig for the created AKS cluster. Once we have the cluster's credentials, we instantiate the Pulumi Kubernetes provider, which will allow us to deploy resources onto the AKS cluster.

Finally, we deploy the kamaji Helm chart with the help of Pulumi's `kubernetes.helm.v3.Chart` resource. This specifies the chart name, version, and Helm repository where the chart is located. Any additional configuration for the Helm chart could be provided in the `values` property as a JavaScript object.

You would need access to the Helm chart repository. Make sure you replace the placeholder URL (`https://example.com/helm-charts`) with the actual URL for the kamaji Helm chart.

After executing the program, it should deploy the specified version of the kamaji Helm chart onto the AKS cluster, and the cluster's kubeconfig will be exported, which you can use to interact with your Kubernetes cluster using standard tools like `kubectl`.

Remember to replace placeholder values in the code with the specific details of your Azure and AKS setup (name of the resource group, AKS cluster, and Helm chart version).

Before running this program, ensure that the Pulumi CLI is installed and configured for Azure. To apply the Pulumi program and create the resources, run `pulumi up` in your command line from the folder where this program is saved.