Deploy the tyk-operator helm chart on Kubernetes

Question

Pulumi · Accepted Answer

Deploying the Tyk Operator Helm Chart on Kubernetes is a two-step process. First, we need to ensure that we have a Kubernetes cluster. Second, we prepare and apply a Helm chart. The Tyk Operator is an open-source Kubernetes operator that manages Tyk API Gateway's lifecycle within a Kubernetes cluster.

For the Kubernetes cluster, you might be using a managed Kubernetes service like Amazon EKS, Google GKE, or a self-managed one. If you already have a Kubernetes cluster ready, you can skip the first step. If not, Pulumi provides multiple ways to create one using different cloud providers. In this walkthrough, we'll assume that you already have a Kubernetes cluster.

To deploy a Helm chart using Pulumi, you can use the `Chart` resource from the `@pulumi/kubernetes` package. This resource is a high-level abstraction that allows you to install Helm charts into your Kubernetes cluster.

Here is a TypeScript program that demonstrates how to deploy the Tyk Operator Helm chart on an existing Kubernetes cluster:

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

// Create a Kubernetes provider instance using the default kubeconfig credentials.
const provider = new k8s.Provider("k8s-provider", {
    kubeconfig: k8s.config.requireKubeconfig(),
});

// Deploy the Tyk Operator Helm chart into the Kubernetes cluster.
const tykOperatorChart = new k8s.helm.v3.Chart("tyk-operator", {
    fetchOpts: {
        // Replace with the correct repo URL for the Tyk Operator Helm chart.
        repo: "https://helm.tyk.io/public/helm/charts/",
    },
    chart: "tyk-operator", // The name of the chart. Make sure this is correct.
    version: "0.9.0", // Specify the version of the chart you wish to deploy.
    namespace: "tyk-operator", // You can define a namespace or leave it to default.
    values: {
        // Specify any custom values required by the Tyk Operator Helm chart.
    }
}, { provider });

export const chartName = tykOperatorChart.metadata.apply(m => m.name);
```

Here is what this program does:

1. Imports the necessary Pulumi Kubernetes package for TypeScript.

2. Creates a Kubernetes provider. This allows Pulumi to communicate with your Kubernetes cluster. It will use your current kubeconfig file, which should be set up in advance to point to your Kubernetes cluster.

3. Deploys the Tyk Operator using the `Chart` resource. This includes the repository where the Helm chart can be fetched, the name of the Helm chart, the version, and any specific configurations (`values`) that you might want to override in the default Helm chart.

4. Exports the name of the deployed chart as an output property of the stack, accessible upon successful deployment of the chart.

Please note that you'll need to replace the `repo` URL with the exact one that points to the Tyk Operator Helm chart repository. The `version` and `values` should also be set according to the chart's requirements and your desired configurations.

To run this Pulumi program, you'll need Node.js and Pulumi CLI installed on your computer. Save the above program in a file named `index.ts`, and then run the following commands in the same directory:

```shell
pulumi stack init dev  # Initializes a new Pulumi stack
pulumi up              # Preview and deploy changes
```

The program should execute and, if it's set up correctly, the Tyk Operator will be deployed to your Kubernetes cluster. Use `pulumi stack output` to see the exported chart name after the deployment.