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

Question

Pulumi · Accepted Answer

To deploy the `appmesh-gateway` Helm chart on Azure Kubernetes Service (AKS), you'll need to follow these steps:

1. Set up an AKS cluster.
2. Install and configure Helm on your machine.
3. Add the repository that contains the `appmesh-gateway` chart.
4. Deploy the chart to your AKS cluster.

Below is a Pulumi program written in TypeScript that performs these steps. This program uses the `azure-native` provider to provision an AKS cluster and the `kubernetes` provider to deploy the Helm chart.

First, we will create an AKS cluster using `azure-native`. We will then use the `kubernetes` provider to deploy the Helm chart. The `kubernetes.helm.v3.Chart` resource will allow us to deploy the `appmesh-gateway` chart from a specified Helm chart repository.

Here's the program:

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

// Create an AKS cluster.
const cluster = new azureNative.containerservice.ManagedCluster("aksCluster", {
    resourceGroupName: "myResourceGroup",
    agentPoolProfiles: [{
        count: 1,
        vmSize: "Standard_DS2_v2",
        name: "agentpool",
        mode: "System",
    }],
    dnsPrefix: "myKubeDnsPrefix",
    // Specify any other required properties here.
});

// Export the kubeconfig to access the AKS cluster.
export const kubeconfig = cluster.kubeConfig.apply(c => c.raw);

// Create a provider for deploying the Helm chart.
const k8sProvider = new k8s.Provider("k8sProvider", {
    kubeconfig: kubeconfig,
});

// Deploy the appmesh-gateway helm chart.
const appmeshGatewayChart = new k8s.helm.v3.Chart("appmesh-gateway", {
    chart: "appmesh-gateway",
    version: "1.0.0", // Specify the chart version you wish to deploy.
    fetchOpts: {
        repo: "http://myhelmrepo.com", // Replace with the correct Helm chart repository URL.
    },
}, { provider: k8sProvider });

// Export the status of the Helm release.
export const appmeshGatewayStatus = appmeshGatewayChart.status;
```

Let's walk through what this program does:

- We import the required Pulumi libraries for interacting with Azure and Kubernetes.
- We create a new AKS cluster with a single node pool via `azureNative.containerservice.ManagedCluster`.
- We export the `kubeconfig` that can be used to access the AKS cluster with `kubectl` or other Kubernetes tools.
- We establish a Kubernetes provider which tells Pulumi how to communicate with the AKS cluster.
- We deploy the `appmesh-gateway` Helm chart using Pulumi's `k8s.helm.v3.Chart` resource. We specify the chart name, chart version, and repository URL where the chart can be found.
- We export the status of the Helm chart deployment so you can verify its success.

To deploy this Pulumi program:

1. Install Pulumi and configure it for use with Azure.
2. Set up the necessary Azure credentials on your local machine.
3. Save the above code in a file with a `.ts` extension (for example, `deployAppmeshGateway.ts`).
4. Run `pulumi up` to preview and deploy the changes.

Remember to replace placeholders like `"http://myhelmrepo.com"` with the actual Helm repository URL containing your `appmesh-gateway` chart, and adjust the AKS cluster configuration as necessary for your use case.

The `appmesh-gateway` Helm chart should now be deployed to your AKS cluster. You can validate the deployment with `kubectl` commands or by examining the exported status in your Pulumi stack outputs.