Deploy the workshop-operator helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

Deploying a Helm chart to a Kubernetes cluster on Digital Ocean is a two-step process:

1. Provision a Kubernetes cluster on Digital Ocean.
2. Deploy the Helm chart to the provisioned cluster.

To provision a Digital Ocean Kubernetes (DOKS) cluster, we'll use the `digitalocean.KubernetesCluster` resource from Digital Ocean's Pulumi provider. Once the cluster is up and running, we'll configure `kubectl` to connect to it by setting the kubeconfig.

Then, to deploy the Helm chart, we'll use the `kubernetes.helm.v3.Chart` resource from Pulumi's Kubernetes provider. We'll specify the name of the Helm chart (`workshop-operator` in this case) along with any values you would like to customize.

Below is a full TypeScript program that demonstrates how to perform these steps. Each part is commented to help you understand the process:

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

// Create a Digital Ocean Kubernetes cluster.
const cluster = new digitalocean.KubernetesCluster('do-cluster', {
    region: 'nyc3', // Choose the region where you want your cluster
    version: 'latest', // Specify the version of Kubernetes you want to use
    nodePool: {
        name: 'default',
        size: 's-2vcpu-2gb', // Choose the size of your nodes
        nodeCount: 2, // Specify the number of nodes in the node pool
    },
});

// Export the kubeconfig to access the cluster.
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;

// Create a Kubernetes provider instance using the kubeconfig from the Digital Ocean cluster.
const k8sProvider = new kubernetes.Provider('k8s-provider', {
    kubeconfig: cluster.kubeConfigs[0].rawConfig,
});

// Deploy the workshop-operator Helm chart on the Digital Ocean cluster.
const helmChart = new kubernetes.helm.v3.Chart('workshop-operator-chart', {
    chart: 'workshop-operator', // The name of the chart in the Helm repository
    fetchOpts: {
        repo: 'http://charts.your-company.com', // Replace with the URL of your Helm chart's repository,
    },
}, { provider: k8sProvider }); // Associate the Helm chart with the Kubernetes provider.

// Optionally, you can export the Helm chart deployment status
export const helmChartStatus = helmChart.status;
```

In this program:
- We first create a Digital Ocean Kubernetes cluster in the `nyc3` region with the latest version of Kubernetes. We specify the node size and count which can be adjusted to your needs.
- We export the `kubeconfig` from the newly created cluster, which you'll need to interact with your Kubernetes cluster using `kubectl`.
- We create a Pulumi Kubernetes provider that uses the `kubeconfig` from our DOKS cluster.
- Finally, we define a `Chart` resource which represents the Helm chart we wish to deploy. We specify the chart name `workshop-operator` and the repository where the chart is located.

The `fetchOpts` property in the `Chart` resource definition should be replaced with the specific details of your Helm chart's location. Ensure to put the URL of the repository where your `workshop-operator` Helm chart is hosted. If you have additional configuration values you would like to provide to your Helm chart, you can specify them in the `values` property of the `Chart` resource.

Remember to install the necessary Pulumi packages and setup `pulumi` CLI before running the code. Also, you'll need to have access to a Digital Ocean account and Kubernetes configured with the necessary credentials.

This is a general program and modifications may be required depending on the specifics of the Helm chart you are deploying and your Digital Ocean settings.