Deploy the tyk-pump helm chart on Kubernetes

Question

Pulumi · Accepted Answer

Deploying a Helm chart on Kubernetes with Pulumi involves using the `helm.sh/v3.Chart` resource from the Pulumi Kubernetes provider. The `helm.sh/v3.Chart` resource allows you to deploy applications packaged as Helm charts directly onto a Kubernetes cluster. Helm charts are a great way to package and deploy applications on Kubernetes, as they encapsulate all necessary Kubernetes resources and dependencies into a single, versioned package that can be managed easily.

In the program below, I will demonstrate how to deploy the `tyk-pump` Helm chart on a Kubernetes cluster. To accomplish this, we first need to set up a Kubernetes cluster and configure `kubectl` with its context so that Pulumi can interact with the cluster. I will assume that you already have a Kubernetes cluster available and `kubectl` configured appropriately. If you don't have a cluster, you can use services like Google Kubernetes Engine (GKE), Azure Kubernetes Service (AKS), or Amazon Elastic Kubernetes Service (EKS) to create one.

Once the cluster is ready, you can use the following Pulumi program written in TypeScript. The program assumes that you have the proper permissions to deploy to the cluster, and that you have Pulumi installed and set up for use.

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

const pulumiConfig = new pulumi.Config();

// Define the settings for the tyk-pump Helm chart
const tykPumpChart = new k8s.helm.v3.Chart("tyk-pump", {
    chart: "tyk-pump",
    version: "0.5.4", // Specify the version of the chart you want to deploy
    fetchOpts: {
        repo: "https://helm.tyk.io/public/helm/charts/", // The repository where the tyk-pump chart is stored
    },
    values: {
        // Provide any custom values you wish to use for the Helm chart here
        // For example, to change the replica count:
        // replicaCount: 2
    },
    // If you need to specify a namespace, you can do so by uncommenting the following line
    // namespace: "tyk"
});

// If you want to export any specific values from the deployed chart, you can do so like this
// For example, if you want to output the service name:
export const serviceName = tykPumpChart.getResourceProperty("v1/Service", "tyk-pump", "metadata.name");

```

In this Pulumi program, we first import the necessary Kubernetes module from Pulumi's Kubernetes provider. We then create a new instance of the `Chart` resource, which Pulumi will use to deploy the `tyk-pump` Helm chart to your Kubernetes cluster.

- `chart`: Specifies the name of the chart to deploy. In this case, "tyk-pump".
- `version`: Defines the version of the Helm chart that we want to install. Replace `"0.5.4"` with the desired chart version.
- `fetchOpts.repo`: Points to the repository where the Helm chart is hosted.
- `values`: Here you can specify any custom values that you would like to override in the Helm chart. For instance, you might want to change the number of replicas or set specific configuration parameters for `tyk-pump`.

We then export a Pulumi stack output, `serviceName`, which will display the name of the deployed service after the Helm chart is installed. You can extend this to export other properties of the chart that you might be interested in, such as external IP or endpoints, depending on the resources created by the Helm chart.

Run the Pulumi program with the `pulumi up` command, which will provision the resources defined by the Helm chart on your Kubernetes cluster. Make sure you review the plan displayed by Pulumi before confirming the deployment.

After the deployment is successful, you can verify the resources created by the Helm chart using `kubectl`, and you will also see the outputs displayed in your terminal if you have exported any stack outputs as shown in the example.

Please replace the placeholders such as chart version, and repository link with actual values that are relevant at the time you perform this deployment, as they can change over time.