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

Question

Pulumi · Accepted Answer

To deploy the Tyk Operator Helm Chart on an Azure Kubernetes Service (AKS) cluster, we will follow these steps:

1. **Set up an Azure Kubernetes Service (AKS) cluster**: Here, we'll define the necessary Pulumi resources to set up an AKS cluster. This includes specifying the desired location, node size, and count.

2. **Deploy the Tyk Operator Helm Chart**: Once the AKS cluster is available, we'll install the Tyk Operator using a Helm chart. The Tyk Operator enables you to manage Tyk API Gateway features on Kubernetes.

In this Pulumi program, we will use the `azure-native` package to create an AKS cluster. This package provides an interface to all Azure services, including AKS.

Next, we will use the `kubernetes` package to deploy the Tyk Operator Helm chart on Kubernetes. The `kubernetes.helm.v3.Chart` resource in Pulumi is used to deploy Helm charts.

Here's the TypeScript program to achieve these goals:

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

// Set the Pulumi program configuration variables
const config = new pulumi.Config();
const location = config.require("location");
const nodeSize = config.require("nodeSize");
const nodeCount = config.requireNumber("nodeCount");

// Create a new managed Kubernetes cluster (AKS)
const managedCluster = new azureNative.containerservice.ManagedCluster("my-aks-cluster", {
    resourceGroupName: resourceGroup.name,
    location,
    agentPoolProfiles: [{
        count: nodeCount,
        vmSize: nodeSize,
        name: "agentpool"
    }],
    // Define other necessary properties for the AKS cluster
    dnsPrefix: "myakscluster", // Change to a unique prefix
});

// Export the AKS cluster's kubeconfig
export const kubeconfig = pulumi.
    all([managedCluster.name, resourceGroup.name]).
    apply(([clusterName, rgName]) => {
        return azureNative.containerservice.listManagedClusterUserCredentials({
            resourceGroupName: rgName,
            resourceName: clusterName
        });
    }).
    apply(creds => Buffer.from(creds.kubeconfigs[0].value, 'base64').toString());

// Create an instance of the Kubernetes Provider pointing to the AKS cluster
const k8sProvider = new k8s.Provider("my-aks-k8s-provider", {
    kubeconfig: kubeconfig
});

// Deploy the Tyk Operator Helm chart using the Kubernetes provider
const tykOperatorChart = new k8s.helm.v3.Chart("tyk-operator-chart", {
    chart: "tyk-operator",
    version: "0.5.0", // Specify the version of the Tyk Operator Helm chart
    fetchOpts: {
        repo: "https://helm.tyk.io/public/helm/charts/", // The Helm chart repository
    },
}, { provider: k8sProvider });

// We can now use tykOperatorChart as a reference to configure other Kubernetes resources
// if needed, here you can include those other resources or configurations.

// Export the URLs to access deployed services
export const gatewayUrl = pulumi.interpolate`http://${managedCluster.privateFQDN}/tyk-gateway`;
export const dashboardUrl = pulumi.interpolate`http://${managedCluster.privateFQDN}/tyk-dashboard`;

// Note:
// - Make sure to change the `dnsPrefix` to something unique to avoid conflicts.
// - You may need to provide additional configurations for AKS and the Tyk Operator 
//   based on the specific requirements and the available options in Azure and the Helm chart.
```

Before you run this Pulumi program, make sure to:

- Install Pulumi and configure it to use the Azure cloud provider.
- Create a new Pulumi stack or use an existing one.
- Set the required configuration variables:
  - `location`: the location where you want to deploy your AKS cluster.
  - `nodeSize`: the size of the nodes you want to create (e.g., "Standard_D2_v2").
  - `nodeCount`: the number of nodes you want in your cluster.

To run the program:
- Use the `pulumi up` command to apply the changes and provision the resources.

Remember, Pulumi will show you a preview of the changes before applying them, so you can check everything before you confirm the deployment. Once you're ready, select 'yes' to start the deployment.

Once the deployment is complete, Pulumi will output the URLs to access the Tyk Gateway and the Tyk Dashboard, assuming those services are set up and exposed correctly by the Tyk Operator. You may need to configure additional Ingress rules or services based on how you want to expose the Tyk services.

Lastly, please note that the exact chart version and configurations might need adjustment depending on the version at the time you're deploying and your specific needs. It's always a good practice to check the official [Tyk Operator Helm chart repository](https://helm.tyk.io/public/helm/charts/) for the latest information before deploying.