Deploy the route53sync helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the `route53sync` Helm chart on Digital Ocean Kubernetes Service using Pulumi, you will need to accomplish a few high-level tasks:

1. Provision a DigitalOcean Kubernetes cluster.
2. Install the Helm chart into the cluster.

### Provisioning the DigitalOcean Kubernetes Cluster

Before you can install any Helm charts, you need a Kubernetes cluster. Below is an example of how to create a DigitalOcean Kubernetes cluster using Pulumi. We use the `digitalocean.KubernetesCluster` resource for this, which requires you to specify a region, version, and node pool configuration including the size and number of nodes.

### Installing the Helm Chart

Once you have a cluster, you can deploy the `route53sync` Helm chart to it. To deploy a Helm Chart with Pulumi, you can use the `kubernetes.helm.v3.Chart` resource from the `@pulumi/kubernetes` package. This resource allows you to provide the Helm chart details such as name, version, and any custom values you wish to apply.

In the example below, we will assume that `route53sync` is available in a Helm repository that you have access to. You will need to set the `chart` and `version` attributes correctly for the `route53sync` chart you are using. If the chart requires specific configuration values, provide them as an object to the `values` property.

Let's put this all together in a Pulumi program written in TypeScript:

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

// Step 1: Create a DigitalOcean Kubernetes cluster.
const cluster = new digitalocean.KubernetesCluster('do-cluster', {
    region: "nyc3",
    version: "latest", // Replace with specific version if needed
    nodePool: {
        name: "default",
        size: "s-2vcpu-2gb",
        nodeCount: 2,
    },
});

// Step 2: Create a provider for the created cluster.
const k8sProvider = new k8s.Provider('do-k8s-provider', {
    kubeconfig: cluster.kubeConfigs[0].rawConfig,
});

// Step 3: Deploy the route53sync Helm chart to the cluster.
const route53SyncChart = new k8s.helm.v3.Chart('route53sync-chart', {
    chart: "route53sync", // Replace with the correct chart name or path
    version: "1.0.0", // Replace with the correct chart version
    // Add necessary chart values below:
    // values: {
    //     key1: "value1",
    //     key2: "value2",
    // },
}, { provider: k8sProvider });

// Optional: Export the cluster endpoint and kubeconfig.
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;
export const clusterEndpoint = cluster.endpoint;
```

In the code above:

- We create a DigitalOcean Kubernetes cluster in the `nyc3` region with two nodes of size `s-2vcpu-2gb`.
- We instantiate a Kubernetes provider pointing to the newly created cluster by passing the `kubeconfig` from the DigitalOcean cluster.
- We then declare a Helm chart resource for `route53sync`, indicating where to find the chart and which version to use. If needed, we can provide a set of values to configure the chart.
- Optionally, we export the `kubeconfig` and the endpoint of the cluster. The `kubeconfig` is useful for interacting with the cluster using `kubectl` or other Kubernetes tools. The endpoint can be used to access the Kubernetes API server.

Remember to replace `"route53sync"` and `"1.0.0"` with the actual name and version of the Helm chart you are deploying.

To run this Pulumi program:

1. Make sure you have the Pulumi CLI installed and you are logged in.
2. Set up your DigitalOcean token as an environment variable or through the Pulumi config.
3. Run `pulumi up` to preview and deploy the changes.

This will provision the necessary infrastructure and deploy the Helm chart to your Kubernetes cluster.