Deploy the plausible-analytics helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the `plausible-analytics` Helm chart on the Digital Ocean Kubernetes Service using Pulumi, you will go through a few main steps:

1. Provision a DigitalOcean Kubernetes (DOKS) cluster.
2. Configure Pulumi to use the DigitalOcean provider.
3. Deploy the `plausible-analytics` Helm chart to the DOKS cluster.

I will guide you through writing a Pulumi program in TypeScript to accomplish this.

Firstly, you will need to install the necessary Pulumi packages for DigitalOcean and Kubernetes. These packages include the class `KubernetesCluster` from the DigitalOcean Pulumi provider to create the cluster and the `Chart` class from the Pulumi Kubernetes provider to deploy the Helm chart.

Here's a Pulumi program that outlines these steps:

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

// Step 1: Provision a DigitalOcean Kubernetes cluster
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
    // Specify the region for your cluster
    region: "nyc3",
    // Define the Kubernetes version (use a version supported by digitalocean)
    version: "1.21.5-do.0",
    // Define the node pool for your cluster
    nodePool: {
        name: "default",
        size: "s-2vcpu-2gb",
        nodeCount: 2
    },
});

// Export the cluster's kubeconfig, which will be used to configure the Kubernetes provider
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;

// Step 2: Create a provider instance using the above kubeconfig
const k8sProvider = new kubernetes.Provider("k8s-provider", {
    kubeconfig: kubeconfig,
});

// Step 3: Deploy the 'plausible-analytics' helm chart
const plausibleAnalyticsChart = new kubernetes.helm.v3.Chart("plausible-analytics", {
    chart: "plausible-analytics",
    // Add the repository where the chart is located
    fetchOpts: {
        repo: "https://helm_repo_url_here", // Please replace with the actual repo URL for plausible-analytics
    },
    // You can customize your Helm chart values by providing the 'values' parameter.
    // values: {
    //    key: "value",
    //    // Additional custom values
    // },
}, { provider: k8sProvider });

// Optionally, you can export outputs you might want to use later.
// For example, if your Helm chart creates a LoadBalancer service, you might want to export the endpoint
export const plausibleAnalyticsEndpoint = plausibleAnalyticsChart.getResourceProperty("v1/Service", "plausible-analytics", "status").apply(status => status.loadBalancer.ingress[0].ip);
```

Ensure that you have the Pulumi CLI installed and have access to both Pulumi and DigitalOcean accounts. Set up the required access tokens and other credentials as environment variables or use the Pulumi configuration system to provide these values securely.

Replace `"https://helm_repo_url_here"` with the actual repository URL where the `plausible-analytics` Helm chart is located.

In this program:

- We declare a new DOKS cluster by instantiating `digitalocean.KubernetesCluster`. We specify the region, the Kubernetes version, and details of the node pool (like node size and count).
- After the cluster is provisioned, we export the `kubeconfig`, which is needed to communicate with the Kubernetes cluster.
- Then, we create an instance of `kubernetes.Provider` which is configured using the `kubeconfig` of the DOKS cluster. This allows Pulumi to perform deployments on the cluster.
- We deploy the `plausible-analytics` Helm chart by creating a new instance of `Chart`, passing the chart name and repository to the `fetchOpts`. The chart is linked to the provider we defined, which means it will be deployed to the DOKS cluster.

The `plausibleAnalyticsEndpoint` export assumes your Helm chart includes a LoadBalancer service and exports its public IP address. If this is not the case, you will need to modify this export to match the resources created by your Helm chart.

To run this Pulumi program:

- Create a new directory for your Pulumi project and navigate into it.
- Run `pulumi new typescript` to create a new Pulumi TypeScript project.
- Replace the contents of `index.ts` with the code from above.
- Run `npm install` to install all dependencies.
- Run `pulumi up` to execute the Pulumi program and provision the resources.

After running `pulumi up`, you should see the output indicating that the Kubernetes cluster is being created, followed by the deployment of the Helm chart. If there are any issues with the deployment, Pulumi will provide detailed error messages to help diagnose the problem.

Remember to replace the placeholder URL for the Helm repo with the actual URL. If you don't have the Helm chart repository URL, you will need to obtain it from the maintainer of the `plausible-analytics` Helm chart or the Helm Chart repository it is hosted on.