Deploy the cloudflare helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the Cloudflare Helm chart on Digital Ocean Kubernetes Service (DOKS), we will be taking the following steps:

1. **Set up a Kubernetes cluster** - Use DigitalOcean's `KubernetesCluster` resource to create and manage a Kubernetes cluster on DigitalOcean.
2. **Install the Helm Chart** - Use the `helm.sh/v3.Chart` resource from the Kubernetes provider to deploy the Cloudflare Helm chart onto the aforementioned cluster.

Before you start, you'll need to have Pulumi installed and configured for use with DigitalOcean's API. This usually involves setting up a Pulumi project and configuring the appropriate credentials, such as your DigitalOcean Access Token.

Here's a Pulumi TypeScript program that carries out the aforementioned steps:

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

// Create a DigitalOcean Kubernetes cluster.
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
    region: digitalocean.Regions.NYC1,
    version: "latest",
    nodePool: {
        name: "default",
        size: digitalocean.DropletSlugs.DropletS2VCPU2GB,
        nodeCount: 2,
    },
});

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

// Create a provider instance using the kubeconfig from the DigitalOcean Kubernetes cluster.
const k8sProvider = new k8s.Provider("do-k8s-provider", {
    kubeconfig: kubeconfig,
});

// Deploy the Cloudflare Helm chart using the above provider.
const cloudflareHelmChart = new k8s.helm.v3.Chart("cloudflare", {
    chart: "cloudflare",
    // Note: You must specify the repository URL where the Cloudflare Helm chart is hosted.
    // The version is optional and reflects the desired chart version.
    // Values are the settings you wish to customize for the CloudFlare chart.
    fetchOpts: {
        repo: "https://charts.cloudflare.com/",
    },
    values: {
        // Your values here e.g., apiToken: "your-cloudflare-token"
    },
}, { provider: k8sProvider });

// Note: Ensure you've got the correct repository URL and any necessary chart values.
```

In this program:

- We start by importing the necessary Pulumi packages.
- We then create a Kubernetes cluster in the DigitalOcean NYC1 region with the latest Kubernetes version and a default node pool consisting of 2 nodes of the specified droplet size.
- The `kubeconfig` of the cluster is exported to be used for our Kubernetes provider which is necessary to interact with the cluster.
- Next, we instantiate a Kubernetes provider (`k8s.Provider`) that is configured to use the kubeconfig for our DigitalOcean Kubernetes cluster.
- Lastly, we use the helm chart resource to deploy a Cloudflare Helm chart onto the cluster using the repo where the CloudFlare Helm chart is located.

Please ensure that:
- The `chart` property in `new k8s.helm.v3.Chart` constructor should reflect the correct name of the Cloudflare chart if it differs.
- You specify the repository URL where the Cloudflare Helm chart is actually hosted under `fetchOpts`.
- Under `values`, you provide any required values that are necessary for the Cloudflare Helm chart to configure it according to your needs, such as API tokens or other settings.

After writing this program, you can run `pulumi up` to deploy the resources. Pulumi will show you a preview of the resources that will be created and, after confirmation, will proceed to create the resources in the specified cloud provider. Once the deployment is complete, Pulumi will output any specified stack exports, such as the kubeconfig in this case.

By following these instructions and using the provided program, you should have the Cloudflare Helm chart deployed on a DigitalOcean Kubernetes cluster.