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

Question

Pulumi · Accepted Answer

Deploying a Helm chart on Kubernetes using Pulumi typically consists of the following steps:

1. **Setting up a Kubernetes Cluster**: A cluster is where your services will be deployed. On DigitalOcean, this is facilitated by the `digitalocean.KubernetesCluster` resource.

2. **Installing the Helm Chart**: With a cluster in place, you can use the `kubernetes.helm.v3.Chart` resource to deploy Helm charts onto the cluster.

Below is a detailed Pulumi program in TypeScript that defines two primary components:

- The DigitalOcean Kubernetes cluster where your workloads will reside.
- The deployment of the Splunk operator via a Helm chart.

Keep in mind, the program assumes that you have Pulumi and the required cloud provider CLI already set up and configured for use. For DigitalOcean, you'd typically have your access token configured. You also need to have `kubectl` installed and configured to communicate with your Kubernetes cluster, though Pulumi tends to handle this automatically.

Let's dive into the code:

```typescript
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: "nyc3", // Choose the region that is closest to you or your users
    version: "latest", // Set the desired K8s version for the cluster
    nodePool: {
        name: "default",
        size: "s-1vcpu-2gb", // Choose the size that is appropriate for your budget and workloads
        nodeCount: 2,
    },
});

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

// Setup a provider to enable Pulumi to communicate with the newly created cluster
const provider = new k8s.Provider("do-k8s-provider", {
    kubeconfig: kubeconfig,
});

// Deploy the splunk-operator Helm chart on the DigitalOcean Kubernetes cluster
const splunkOperatorChart = new k8s.helm.v3.Chart("splunk-operator", {
    chart: "splunk-operator",
    // Add the Helm repository here or specify the `repo` attribute if it's from a custom repository
    fetchOpts: {
        repo: "https://splunk.github.io/splunk-operator/",
    },
    // Specify the version of the Helm chart if needed, or omit to pull the latest
    version: "1.0.3",
    // You can customize the chart values here, such as the namespace or other chart-specific settings
    // values: {
    //     // Example of setting values -- replace these with actual values for splunk-operator
    //     "someKey": "someValue",
    // },
}, { provider: provider });

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

### Explanation:

- We import necessary Pulumi packages for DigitalOcean and Kubernetes.
- We create a cluster on DigitalOcean with a specified region, version, and node pool configuration. Adjust the node size and count as per your needs and budget.
- Pulumi provides us with the raw Kubeconfig of the cluster, which we export to connect to the cluster outside Pulumi if necessary.
- We create a Pulumi Kubernetes provider which is how Pulumi will communicate with our Kubernetes cluster. The provider needs the Kubeconfig from the just-created cluster.
- We then define a Helm chart using Pulumi's Kubernetes provider, which represents the `splunk-operator` chart we want to install. We provide the repository URL and optional version number and chart values.
- Finally, we export the cluster's name and the status of the Splunk operator chart deployment for easy access and reference.

Remember to replace placeholders like chart version or values with the actual ones needed for your deployment. The chart values can be configured based on the Helm chart's specific requirements or customized as needed.

Feel free to adjust the region, node sizes, and counts as required for your specific use-case and budget. You may also want to add configurations based on the `splunk-operator` Helm chart's documentation for customized deployments.