Deploy the anan-templates helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the `anan-templates` helm chart on the Digital Ocean Kubernetes Service (DOKS), you will need to complete a couple of steps:

1. Set up a Digital Ocean Kubernetes cluster.
2. Deploy the helm chart to the cluster.

Let's break down the steps one by one.

### Step 1: Set up a Digital Ocean Kubernetes Cluster
First, you need to create a Kubernetes cluster on Digital Ocean. You can easily manage Digital Ocean resources using Pulumi's Digital Ocean provider. In this step, we’ll define a Pulumi stack to create the cluster.

The `digitalocean.KubernetesCluster` resource is used to create and manage a cluster within your Digital Ocean account. You need to provide it with a name, region, version, and node pool configuration.

### Step 2: Deploy the Helm Chart
After you have your Kubernetes cluster up and running, the next step is to deploy your Helm chart. You can use the `kubernetes.helm.v3.Chart` resource provided by Pulumi's Kubernetes provider to deploy charts into a Kubernetes cluster.

Here's how you could write a Pulumi program in TypeScript to accomplish both steps:

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

const clusterName = "anan-cluster";

// Step 1: Create the DOKS cluster.
const cluster = new digitalocean.KubernetesCluster(clusterName, {
    region: "nyc3", // New York 3 Datacenter
    version: "latest", // Use the latest available version of Kubernetes
    nodePool: {
        size: "s-1vcpu-2gb",
        name: "worker-pool",
        nodeCount: 2, // Number of nodes
    },
});

// Step 2: Deploy the anan-templates helm chart.
const ananChart = new kubernetes.helm.v3.Chart("anan-templates", {
    chart: "anan-templates",
    // Typically you need to set 'repo' if 'anan-templates' is a helm chart not from a public repository.
    // Specify the namespace if needed.
    // You can also provide 'values' to customize the helm chart.
}, { provider: new kubernetes.Provider("k8s-provider", { kubeconfig: cluster.kubeConfigs[0].rawConfig }) });

// Export the cluster's kubeconfig
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;
```

In this program, we import the necessary packages, set up a cluster, and deploy a Helm chart named `anan-templates`. Be aware that `anan-templates` should be a known chart in the repository you're using, and if it's coming from a private repository, you'd need to specify the repository's URL and potentially authentication credentials.

Remember to replace `"latest"` with a specific Kubernetes version supported by DigitalOcean if you prefer to use a pinned version rather than the latest. Also, adjust the size and count of the nodes as per your requirements.

To use this code, you would need to have Pulumi installed, as well as have the Digital Ocean Pulumi provider set up with appropriate credentials. When you run `pulumi up`, Pulumi will create the DOKS cluster and once the cluster is available, it will deploy the Helm chart to this cluster.

The program ends by exporting the kubeconfig, which can be used to interact with your Kubernetes cluster using kubectl once it's been set up through Pulumi.