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

Question

Pulumi · Accepted Answer

Deploying the Tyk Dashboard using the Helm Chart on Azure Kubernetes Service (AKS) involves setting up an AKS cluster and then using Pulumi's Kubernetes provider to install the chart. We'll break this into steps and then provide a complete program.

### Steps to Deploy Tyk Dashboard on AKS using Pulumi:
1. Create a new AKS cluster, or use an existing one.
2. Install Pulumi’s Kubernetes provider.
3. Deploy the Tyk Dashboard Helm chart on the AKS cluster.

### Step 1: Create an AKS Cluster (if needed)

You can skip this step if you already have an AKS cluster. If not, you can define an AKS cluster using Pulumi's `azure-native` package.

### Step 2: Install Pulumi’s Kubernetes provider

This provider allows Pulumi to interact with Kubernetes, including deploying Helm charts.

### Step 3: Deploy Tyk Dashboard Helm Chart

To install the Tyk Dashboard, you'll use the `kubernetes.helm.v3.Chart` resource from Pulumi's Kubernetes provider. This resource is a representation of a Helm chart which allows you to deploy third-party applications with all their necessary configurations onto your Kubernetes cluster.

Now, let's see a complete TypeScript program that demonstrates these steps:

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

const name = "tyk-dashboard";

// Create a resource group for the AKS cluster
const resourceGroup = new azurenative.resources.ResourceGroup(`${name}-rg`);

// Create an AKS cluster
const cluster = new azurenative.containerservice.ManagedCluster(`${name}-aks`, {
    resourceGroupName: resourceGroup.name,
    agentPoolProfiles: [{
        count: 1,
        maxPods: 110,
        mode: "System",
        name: "agentpool",
        osDiskSizeGB: 30,
        osType: "Linux",
        vmSize: "Standard_DS2_v2",
    }],
    dnsPrefix: `${name}-kube`,
    enableRBAC: true,
    kubernetesVersion: "1.18.14",
    linuxProfile: {
        adminUsername: "adminuser",
        ssh: {
            publicKeys: [{
                keyData: "ssh-rsa AAAAB3NzaC...",
            }],
        },
    },
    // Azure Active Directory integration is optional
    // aadProfile: { 
    //     ...
    // },
});

// Export the kubeconfig
export const kubeconfig = cluster.kubeConfigRaw;

// Use the generated kubeconfig to create a Kubernetes provider
const k8sProvider = new k8s.Provider(`${name}-k8s`, {
    kubeconfig: kubeconfig,
});

// Deploy the Tyk Dashboard Helm chart
const tykDashboard = new k8s.helm.v3.Chart(`${name}-helm`, {
    chart: "tyk-headless",
    version: "0.9.1", // specify the version you wish to use
    fetchOpts: {
        repo: "https://helm.tyk.io/public/helm/charts",
    },
    values: {
        // your Tyk Dashboard values here
    },
}, { provider: k8sProvider });

// Export the Tyk Dashboard service endpoint
export const tykDashboardService = tykDashboard.getResource("v1/Service", `${name}-tyk-dashboard`);
```

### Explanation:

- We import all the necessary Pulumi packages to work with Azure and Kubernetes.
- First, we create an Azure Resource Group to hold our AKS resources.
- Then, we define a Managed Kubernetes cluster in Azure using properties such as `agentPoolProfiles`, `dnsPrefix`, and `linuxProfile`.
- We export the raw kubeconfig of the cluster using a stack export, which can be used to access your cluster using `kubectl`.
- We create an instance of the Pulumi Kubernetes provider and pass in the kubeconfig. This provider is used to interfacing with the Kubernetes cluster in our subsequent code.
- Lastly, we create a new Helm chart resource using the `k8s.helm.v3.Chart` class, specifying the Tyk Dashboard chart and any values needed for the deployment.
- We export the Tyk Dashboard service endpoint to know where we can access the deployed service.

To apply this program:

- Save this code in a file named `index.ts`.
- Run `pulumi up` to create and apply the resources to your Azure account.

Please replace `"ssh-rsa AAAAB3NzaC..."` with your actual SSH public key. If you choose to set up Azure Active Directory integration for your AKS cluster, the commented section starting with `aadProfile` should be customized accordingly.

Remember to review the [Pulumi Azure documentation](https://www.pulumi.com/docs/reference/pkg/azure-native/) and the [Pulumi Kubernetes documentation](https://www.pulumi.com/docs/reference/pkg/kubernetes/helm/v3/chart/) for more detailed information on the resources and their properties.