Deploy the nodejs-ex helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the `nodejs-ex` Helm chart on a Digital Ocean Kubernetes service, you will need to create a Kubernetes cluster on Digital Ocean and then use Pulumi's Kubernetes provider to deploy the Helm chart to that cluster.

The process involves the following steps:

1. Provision a Kubernetes cluster on Digital Ocean.
2. Configure Pulumi to use the newly created Kubernetes cluster.
3. Deploy the `nodejs-ex` Helm chart onto the cluster.

The resources we'll use are:

- `digitalocean.KubernetesCluster`: A Pulumi resource that provisions a Kubernetes cluster on the DigitalOcean platform.
- `kubernetes.helm.sh/v3.Release`: A Pulumi Kubernetes resource that represents a Helm chart release.

Here's a TypeScript program that demonstrates these steps. Make sure you have Pulumi installed and configured with the necessary Digital Ocean and Kubernetes provider plugins.

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

// Step 1: Create a Kubernetes cluster on DigitalOcean
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
    region: "nyc3", // Choose the region that is closest to you or your users
    version: "1.21.5-do.0", // Specify the version of Kubernetes
    nodePool: {
        name: "default",
        size: "s-2vcpu-2gb", // The size of the Droplets (nodes) in the node pool
        nodeCount: 2, // The number of Droplet nodes in the node pool
    },
});

// Step 2: Configure Pulumi to use the DigitalOcean Kubernetes cluster
const provider = new k8s.Provider("k8s-provider", {
    kubeconfig: cluster.kubeConfigs[0].rawConfig,
});

// Step 3: Deploy the nodejs-ex Helm chart on the cluster
const nodejsChart = new k8s.helm.v3.Chart("nodejs-ex", {
    chart: "nodejs-ex", // This should be the name of the Helm chart you want to deploy
    // The repository option specifies the Helm chart repository containing the chart
    repositoryOpts: {
        repo: "https://charts.example.com/", // Replace with the correct Helm repository URL
    },
    // Customize Helm chart values here (e.g., image, tag, service type, etc.)
    values: {
        service: {
            type: "ClusterIP",
        },
    },
}, { provider });

// Export the cluster's kubeconfig and the service endpoint
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;
export const nodejsServiceEndpoint = pulumi.interpolate`http://${nodejsChart.getResourceProperty("v1/Service", "nodejs-ex", "status").apply(status => status.loadBalancer.ingress[0].ip)}`;
```

Before running this program, you should replace `https://charts.example.com/` with the actual Helm repository URL where the `nodejs-ex` chart is hosted. After deploying the Helm chart, the program exports the Kubernetes cluster's kubeconfig and the service endpoint.

To proceed with this deployment, you will need to run `pulumi up` in your terminal, where you have saved this program. This command will prompt you to confirm the deployment, after which Pulumi will provision the cluster and deploy the Helm chart as specified.