Deploy the nirmata-cluster-registrator-chart helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the `nirmata-cluster-registrator-chart` Helm chart on DigitalOcean's Kubernetes Service using Pulumi, you'll need to follow several steps. First, you'll need to create a Kubernetes cluster on DigitalOcean. After the cluster is created and ready, you'll deploy the Helm chart to this cluster.

The resources used in this program are:
- `digitalocean.KubernetesCluster`: This resource is used to create a Kubernetes cluster in DigitalOcean. It allows you to specify the region, version, node size, node count, and other configurations for your Kubernetes cluster.
- `kubernetes.helm.v3.Chart`: This Helm chart resource allows you to deploy a Helm chart into a Kubernetes cluster. You will specify the chart name, version, and any values you want to override.

Here's a Pulumi TypeScript program that will create a DigitalOcean Kubernetes cluster and deploy the `nirmata-cluster-registrator-chart` Helm chart:

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

// Create a DigitalOcean Kubernetes cluster
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
    region: "nyc3",
    version: "latest",
    nodePool: {
        name: "default",
        size: "s-2vcpu-2gb",
        nodeCount: 2,
    },
});

// Export the DigitalOcean Kubernetes cluster kubeconfig
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;

// Create a provider instance using the kubeconfig from the newly created DigitalOcean cluster
const k8sProvider = new kubernetes.Provider("k8s-provider", {
    kubeconfig: cluster.kubeConfigs[0].rawConfig,
});

// Deploy the nirmata-cluster-registrator-chart Helm chart using the above provider
const nirmataChart = new kubernetes.helm.v3.Chart("nirmata-chart", {
    chart: "nirmata-cluster-registrator",
    // Optionally, you can specify the chart version and repository if needed
    // version: "1.2.3",
    // repositoryOpts: {
    //     repo: "https://charts.example.com/"
    // },
    values: {
        // ... provide any chart values here
    },
}, { provider: k8sProvider });

// Export the Helm chart status
export const nirmataChartStatus = nirmataChart.status;

```
This program starts by importing the necessary Pulumi packages for DigitalOcean and Kubernetes, and the Pulumi SDK itself.

1. We define a DigitalOcean Kubernetes cluster with `digitalocean.KubernetesCluster` specifying the region, Kubernetes version, size, and count of nodes for the default node pool.
2. We export the `kubeconfig`, which will be needed to interact with the Kubernetes cluster.
3. Using the exported `kubeconfig`, we create a Pulumi Kubernetes provider. This provider is used to deploy resources to the DigitalOcean Kubernetes cluster.
4. We then define a Helm chart with `kubernetes.helm.v3.Chart`, providing the name of the chart, and optionally the version and repository. You can also specify other configurations for the chart using the `values` property.
5. Lastly, we export the status of the Helm chart deployment, which can be used to track whether the deployment was successful.

Make sure to replace the placeholders and optional parameters with the appropriate values for your use case.

To run this program, save it to a file named `index.ts`, and run `pulumi up` with the Pulumi CLI. Pulumi will handle provisioning the resources in the correct order, waiting for the cluster to be available before attempting to deploy the Helm chart.

Keep in mind that the Helm repository and chart version are not provided in this example; you will need to add these details yourself, especially the chart version or repository URL if the chart is not within the official Helm chart repository.