Deploy the rclone-s3 helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the `rclone-s3` helm chart on DigitalOcean Kubernetes Service using Pulumi, you'll need to follow these general steps:

1. Configure the DigitalOcean provider to create a new Kubernetes cluster.
2. Once the Kubernetes cluster is provisioned, configure the Kubernetes provider to point to the new cluster.
3. Use the Helm package to deploy the `rclone-s3` chart onto the cluster.

We'll begin by importing the necessary packages and setting up the resources sequentially:

- `digitalocean.KubernetesCluster` is used to create and manage a Kubernetes cluster on DigitalOcean.
- `kubernetes.helm.sh/v3.Chart` is a Pulumi resource that allows us to deploy a helm chart to a Kubernetes cluster.

Below is a Pulumi TypeScript program that demonstrates how to accomplish this task. Make sure you have Pulumi CLI installed and logged into a DigitalOcean account before running the code.

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

// Step 1: Create a new DigitalOcean Kubernetes cluster
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
    region: digitalocean.Regions.NYC1,
    version: "latest",
    nodePool: {
        name: "default",
        size: digitalocean.DropletSlugs.DropletS2VCPU2GB,
        nodeCount: 1,
    },
});

// Export the kubeconfig so that we can use it to configure the Kubernetes provider
export const kubeconfig = cluster.kubeConfigs.apply(kc => kc[0].rawConfig);

// Step 2: Configure the Kubernetes provider to use the kubeconfig from the DigitalOcean cluster
const provider = new k8s.Provider("do-k8s", {
    kubeconfig: kubeconfig,
});

// Step 3: Deploy the rclone-s3 Helm chart onto the DigitalOcean Kubernetes cluster
const rcloneS3Chart = new k8s.helm.sh.v3.Chart("rclone-s3-chart", {
    chart: "rclone-s3",
    version: "1.0.0", // You should use the actual version you wish to deploy
    namespace: "default", // Specify the namespace if not deploying into 'default'
    fetchOpts:{
        repo: "https://charts.example.com/", // The repository URL should be where the rclone-s3 chart is hosted
    },
}, { provider });

// Export the chart name 
export const chartName = rcloneS3Chart.metadata.apply(meta => meta.name);

```
This code will create a new DigitalOcean Kubernetes cluster with one node pool consisting of a single 2vCPU, 2GB RAM Droplet. It will also export the kubeconfig file which is necessary to connect to the Kubernetes cluster using kubectl or the Kubernetes provider in Pulumi.

The program then uses this kubeconfig to create a Kubernetes provider that's configured to manage resources in the newly created DigitalOcean cluster.

Finally, it deploys the `rclone-s3` Helm chart into the default namespace of the cluster. The `fetchOpts.repo` should point to the URL where your Helm chart repository is hosted, and the `version` should specify the chart version you wish to deploy. These should be modified to suit your actual Helm chart source and desired version.

To run this Pulumi program, you would save it to a file (e.g., `index.ts`), and then execute it via the Pulumi CLI:

```shell
pulumi up
```

This will prompt you to create a new stack (an isolated environment) if you haven’t already, and then will proceed to create the resources defined by the program. The CLI will show a preview of the resources that will be created and ask for confirmation before proceeding with the actual deployment.

Once the deployment is completed, Pulumi will output any exported values, such as the cluster kubeconfig and the name of the deployed Helm chart. You can use the kubeconfig file to manage your Kubernetes cluster with kubectl.

Please ensure you have the appropriate permissions and the Pulumi DigitalOcean provider configured with a valid API token before running this program.