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

Question

Pulumi · Accepted Answer

To deploy the `tyk-bootstrap` Helm chart on Azure Kubernetes Service (AKS), we'll follow these steps:

1. Set up a new AKS cluster using Pulumi's `azure-native` package.
2. Install the Helm chart onto the AKS cluster.

The Pulumi program below demonstrates how to use TypeScript to define the necessary infrastructure. We first create an AKS cluster and then use a Helm chart resource to deploy `tyk-bootstrap`.

Here is a comprehensive step-by-step Pulumi TypeScript program that achieves your goal:

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

// Step 1: Create the Azure Kubernetes Service (AKS) cluster
const resourceGroup = new azure.core.ResourceGroup("aksResourceGroup", {
    location: "East US", // You can choose a different location
});

const aksCluster = new azure.containerservice.KubernetesCluster("aksCluster", {
    resourceGroupName: resourceGroup.name,
    defaultNodePool: {
        name: "aknpool",
        vmSize: "Standard_DS2_v2",
        nodeCount: 2,
    },
    dnsPrefix: "aksk8s",
    identity: {
        type: "SystemAssigned",
    },
    location: resourceGroup.location,
});

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

// Step 2: Deploy the tyk-bootstrap Helm chart onto the AKS cluster
const tykBootstrapChart = new k8s.helm.v3.Chart("tyk-bootstrap", {
    chart: "tyk-bootstrap",
    version: "1.0.0", // Replace with the correct chart version
    fetchOpts: {
        repo: "https://helm.tyk.io/public/helm/charts/", // Use the correct Helm repo URL
    },
}, { provider: new k8s.Provider("k8s-provider", { kubeconfig: kubeconfig }) });

// Export the Helm chart status as output
export const helmStatus = tykBootstrapChart.status;
```

In the above program:

1. We create a resource group using the `azure.core.ResourceGroup` class. It's good practice to place related resources into a resource group for better management and visibility within Azure.

2. We create an AKS cluster with the `azure.containerservice.KubernetesCluster` class. Substitute "Standard_DS2_v2" with the appropriate VM size and the node count as per your requirements.

3. The AKS cluster's `kubeConfigRaw` is exported as `kubeconfig`, which allows us to interact with the cluster using the Kubernetes API.

4. We use the Pulumi Kubernetes provider to create a Helm chart resource using the `k8s.helm.v3.Chart` class. We specify the name of the Helm chart, the version number, and the repository URL.

The last step is to deploy this Pulumi program, which will handle setting up the AKS cluster and then deploying `tyk-bootstrap` onto it. If you don't have Pulumi CLI installed and Azure configured, you might want to refer to [Pulumi's documentation](https://www.pulumi.com/docs/get-started/azure/) to set that up first. After everything is installed and set up, run the following commands:

```bash
pulumi up
```

This command initiates the deployment. Pulumi will print out the proposed changes and ask for confirmation before provisioning the resources. After confirmation, Pulumi will execute the changes and create the resources.

Remember that deploying cloud resources might incur costs, so be sure to check Azure's pricing for the AKS service and associated resources.

Also, please note that you should replace the placeholder `"1.0.0"` with the actual version of the `tyk-bootstrap` Helm chart you wish to deploy and make sure the Helm repo URL is correct.

By adding the `helmStatus` export, we enable observation of the deployment status. This may assist in troubleshooting if needed.

After you run `pulumi up`, the output will include both the `kubeconfig` and `helmStatus` values. The `kubeconfig` output is sensitive and should be handled securely. To apply updates to your Kubernetes applications or make any changes to the cluster, you can use the `kubeconfig` data.

Remember, these resources will be live on Azure, and you'll be billed for them, so when you're done, you can tear down the resources with:

```bash
pulumi destroy
```