Deploy the tyk-dashboard helm chart on Azure Managed Openshift Service

Question

Pulumi · Accepted Answer

To deploy the Tyk Dashboard Helm chart on an Azure Red Hat OpenShift (ARO) Service, you will need to complete a few steps that involve:

1. **Setting up the Azure Red Hat OpenShift Service**: This is a fully managed OpenShift service on Azure, backed by Microsoft and Red Hat support.

2. **Installing the Tyk Dashboard Helm chart on the OpenShift Cluster**: Helm is a package manager for Kubernetes, which allows you to define, install, and upgrade even the most complex Kubernetes applications.

Here's an outline of the Pulumi program that you need to achieve this:

- Import necessary Pulumi packages.
- Create an instance of the Azure Managed OpenShift Service.
- Install the Helm chart for Tyk Dashboard on the OpenShift cluster.

Below is the complete Pulumi program written in TypeScript that demonstrates these steps:

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

// Step 1: Set up the Azure Red Hat OpenShift Service in a specific resource group and location.
const resourceGroupName = new azure_native.resources.ResourceGroup("resourceGroup", {
    location: "eastus", // You can choose your desired Azure location
});

const openShiftCluster = new azure_native.redhatopenshift.OpenShiftCluster("myOpenShiftCluster", {
    resourceGroupName: resourceGroupName.name,
    location: resourceGroupName.location,
    /* Required properties for your cluster:
     * - Master profile configuration
     * - The cluster profile with domain and version specifications
     * - Networking profile
     * - Worker profiles with VM size and subnet ID
     * This is just a skeleton and you will need to replace placeholder values
     * with the actual values that you would like to use for your cluster configurations.
     */
});

// Step 2: Install the Helm chart for Tyk Dashboard on OpenShift Cluster.

// Instantiate a Kubernetes provider pointing to the OpenShift cluster created above.
// We use OpenShift's kubeconfig for Pulumi's Kubernetes provider which allows us to deploy resources to the cluster.
const k8sProvider = new k8s.Provider("k8sProvider", {
    kubeconfig: openShiftCluster.kubeconfigRaw, // `kubeconfigRaw` is an output of the OpenShift cluster
});

// Deploy Tyk Dashboard Helm chart using Pulumi's Helm package.
const tykDashboardChart = new k8s.helm.v3.Chart("tykDashboard", {
    chart: "tyk-dashboard",
    version: "<version>", // Specify the version of the Tyk Dashboard you want to deploy.
    fetchOpts: {
        repo: "https://helm.tyk.io/public/helm/charts/", // The repository where the Helm chart is hosted.
    },
    values: {
        // Specify any custom configuration values for the Tyk Dashboard here.
    },
}, { provider: k8sProvider });

// Exports if needed
export const clusterName = openShiftCluster.name;
export const resourceGroupNameOutput = resourceGroupName.name;
export const dashboardService = pulumi.interpolate`http://${tykDashboardChart.getResource("v1/Service", "tyk-dashboard").status.loadBalancer.ingress[0].ip}`;
```

**Understanding the Code:**
1. We start by importing the required Pulumi packages. `@pulumi/pulumi` for general Pulumi functionalities, `@pulumi/azure-native` for resources specific to Azure Native provider, and `@pulumi/kubernetes` for working with Kubernetes resources including Helm charts.
2. A resource group is created to host all the resources related to the OpenShift cluster.
3. An instance of Azure Red Hat OpenShift is created, which will be managed by Azure. Note that you have to provide specific details about your cluster configuration in the constructor (replace placeholder values with actual ones).
4. A provider of type `@pulumi/kubernetes` is instantiated which points to our newly created OpenShift cluster. The provider needs the kubeconfigRaw of the cluster to interact with it.
5. Finally, we instantiate a Helm chart from Pulumi's Helm package to deploy the Tyk Dashboard. The `repo` URL points to the Tyk's official Helm charts repository, and version specifies the version of the chart you want to deploy. You can customize the Helm chart deployment using the `values` object.
6. Exports are used at the end if you would like to easily access some of the created resources after deployment, such as the cluster name or the dashboard service URL.

**To execute this Pulumi program:**
1. Save the code in a file called `index.ts`.
2. Ensure you have Pulumi installed and are logged in to your Pulumi service.
3. Ensure that you have the Azure CLI installed and are logged in to your Azure account.
4. Run `npm install` to fetch the necessary npm packages.
5. Run `pulumi up` to preview and deploy the changes.

Keep in mind that deploying a managed Azure Red Hat OpenShift cluster and Helm charts with Pulumi will incur costs on Azure, and you should ensure you have the budget and permissions to do so in your environment. This program assumes you have the necessary permissions to create and manage Azure resources and OpenShift clusters.