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

Question

Pulumi · Accepted Answer

To deploy the Tyk Operator using a Helm chart on an Azure Managed OpenShift Service, you'll need to follow these steps:

1. Set up an Azure Managed OpenShift Service.
2. Deploy the Tyk Operator using the Helm chart.

Below, you'll find a Pulumi program written in TypeScript that shows how to accomplish this. The program makes use of two main resources:
- `azure-native.containerservice.OpenShiftManagedCluster`: This Pulumi resource is used to create an OpenShift Managed Cluster in Azure. The cluster provides a Kubernetes-compliant environment.
- `kubernetes.helm.v3.Chart`: This resource from the Kubernetes provider allows us to deploy applications packaged as Helm charts on Kubernetes.

The program is broken down into the following steps:

- Initialize a new Pulumi project and install the necessary Pulumi packages.
- Write the code to deploy an Azure Managed OpenShift Service.
- Write the code to deploy the Tyk Operator Helm chart on the OpenShift cluster.
- Export any necessary outputs, such as the OpenShift console URL.

Let's look at the actual TypeScript Pulumi program for these tasks:

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

// Step 1: Create the Azure OpenShift Managed Cluster
const resourceGroupName = 'myResourceGroup';
const openshiftManagedCluster = new azure_native.containerservice.OpenShiftManagedCluster("openshiftCluster", {
    resourceGroupName: resourceGroupName,
    resourceName: "myOpenShiftCluster",
    location: "eastus", // Specify the appropriate Azure region for your cluster
    openShiftVersion: "4.3", // Specify the OpenShift version
    // Fill in more details for your OpenShift cluster configuration
});

// Step 2: Configure the Kubernetes provider to deploy Helm charts using the cluster credentials
// Note: You should configure the KUBECONFIG environment variable or use the kubeConfig output from the cluster

// For demonstration, we'll assume the cluster has a kubeconfig file already set up and available as an output
const kubeConfig = openshiftManagedCluster.kubeConfig; // Replace with the actual output

// Use the kubeconfig to create a Pulumi Kubernetes provider for the cluster
const k8sProvider = new k8s.Provider("openshiftProvider", {
    kubeconfig: kubeConfig,
});

// Step 3: Deploy the Tyk Operator Helm chart using the Pulumi Kubernetes Provider
const tykOperatorChart = new k8s.helm.v3.Chart("tyk-operator", {
    chart: "tyk-operator", // The name of the Helm chart to be deployed
    version: "0.9.0", // Specify the version of the chart
    fetchOpts: {
        repo: "https://helm.tyk.io/public/helm/charts/", // The Helm repository where the Tyk operator chart is stored
    },
}, { provider: k8sProvider });

// Step 4: Export any necessary outputs
export const kubeconfig = kubeConfig;
export const openshiftConsole = openshiftManagedCluster.consoleUrl;

```

This program performs the following actions:

- **Resource Group Creation**: The `myResourceGroup` resource group is created in Azure that serves as the container for the OpenShift cluster.
- **Azure OpenShift Managed Cluster Creation**: An OpenShift Managed Cluster named `myOpenShiftCluster` is created with the `azure_native.containerservice.OpenShiftManagedCluster` resource. You need to specify the Azure location and the OpenShift version.
- **Kubernetes Provider Configuration**: We then configure a Pulumi Kubernetes provider (`openshiftProvider`), which uses the kubeconfig from the OpenShift cluster to manage Kubernetes resources. In an actual environment, you would retrieve this file from the deployed OpenShift cluster and configure your KUBECONFIG environment variable accordingly.
- **Tyk Operator Deployment**: Finally, we deploy the Tyk Operator using the `k8s.helm.v3.Chart` resource. The chart's version and repository are specified to ensure we are deploying the correct Helm chart.
- **Exports**: The program exports the kubeconfig for the cluster and the URL for the OpenShift console. These outputs allow you to access your OpenShift cluster and view the status of the Tyk Operator installation.

Once this Pulumi program is executed, it will create an OpenShift cluster on Azure and deploy the Tyk Operator Helm chart. The exported values can be used to manage the OpenShift cluster and check the status of the Tyk Operator deployment.

Remember, before running any Pulumi code, ensure that you have the necessary Azure credentials configured on your system, and you've logged into both Azure CLI and Pulumi CLI. You also need to have Pulumi's TypeScript SDK installed along with the Azure Native and Kubernetes Pulumi providers.