Deploy the ocp-oauth-github helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the `ocp-oauth-github` Helm chart on Digital Ocean Kubernetes, we will first need to create a Kubernetes cluster on Digital Ocean. Once the cluster is up and running, we can install the Helm chart onto it. In Pulumi, this is achieved by defining resources in code, which describe the desired state of our infrastructure.

Below you'll find a Pulumi program written in TypeScript to accomplish this. The program is divided into two parts:

1. **Provisioning the Digital Ocean Kubernetes Cluster**: We'll define a `digitalocean.KubernetesCluster` resource to create the cluster.
2. **Deploying the Helm Chart**: We'll define a `kubernetes.helm.v3.Chart` resource to deploy the `ocp-oauth-github` chart onto our newly created Kubernetes cluster.

Here is the Pulumi TypeScript program that performs these steps:

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

// Step 1: Provision a DigitalOcean Kubernetes Cluster
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
    region: "nyc1", // Select the region to deploy the cluster
    version: "latest", // Use the latest available version of Kubernetes
    nodePool: {
        name: "default-pool",
        size: "s-2vcpu-2gb", // Select the size for the nodes in the node pool
        nodeCount: 2, // Number of nodes to deploy
    },
});

// Once the cluster is provisioned, we get its kubeconfig for deploying Helm charts.
const kubeconfig = cluster.kubeConfigs[0].rawConfig;

// Step 2: Deploy the ocp-oauth-github Helm chart on the cluster
const helmChart = new k8s.helm.v3.Chart("ocp-oauth-github-chart", {
    // You should specify the correct chart version as per your requirements.
    chart: "ocp-oauth-github",
    version: "1.0.0", // Replace with the desired chart version
    fetchOpts: {
        // Replace with the correct repo URL where your Helm chart is hosted.
        repo: "https://charts.example.com/",
    },
    // If your Helm chart requires custom values, specify them as an object.
    values: {
        // These are example values that might differ for your specific use case.
        replicaCount: 2,
        githubClientId: "your-github-client-id",
        githubClientSecret: "your-github-client-secret",
    },
}, { provider: new k8s.Provider("k8s-provider", { kubeconfig }) });

// Export the cluster's name and the Helm chart's status
export const clusterName = cluster.name;
export const chartStatus = helmChart.status;
```

Let's go over the program:

- **Kubernetes Cluster Creation**: We create a Kubernetes cluster using the `digitalocean.KubernetesCluster` resource. We specify the region (`nyc1`), the Kubernetes version (latest), the node pool configuration (2 nodes of `s-2vcpu-2gb`), and the node count (2).

- **Kubernetes Provider**: Pulumi uses providers to interact with cloud services. Since we need to deploy resources into the Kubernetes cluster, we create a Kubernetes provider with the kubeconfig obtained from the Digital Ocean Kubernetes cluster.

- **Helm