Deploy the unleash-proxy helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the `unleash-proxy` Helm chart on Digital Ocean Kubernetes Service using Pulumi, we will perform the following steps:

1. Create a new Digital Ocean Kubernetes cluster.
2. Deploy the `unleash-proxy` helm chart to the newly created cluster.

You will need the Pulumi CLI installed and configured with access to your Digital Ocean account. Make sure you have generated an access token in the Digital Ocean dashboard to authenticate against the API. Set this token as an environment variable (`DIGITALOCEAN_TOKEN`) in the shell session where you will run the Pulumi CLI commands.

Here's how you could set up your Pulumi program in `TypeScript` to achieve this:

First, we'll import the necessary Pulumi and DigitalOcean packages:

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

Next, we'll create a Digital Ocean Kubernetes cluster:

```typescript
// Create a Kubernetes cluster on DigitalOcean.
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
    region: "nyc3",
    version: "1.21.5-do.0",
    nodePool: {
        name: "default",
        size: "s-2vcpu-2gb",
        nodeCount: 2,
    },
});
```

In the code above, we instantiate a Kubernetes cluster with a specific region, version, and node pool configuration. This configuration includes a pool of 2 nodes of the specified size.

Once we have the cluster set up, we can deploy the `unleash-proxy` Helm chart onto it:

```typescript
// Instantiate a Helm chart for unleash-proxy, assuming that it's available in a Helm chart repository.
const unleashProxyChart = new k8s.helm.v3.Chart("unleash-proxy", {
    chart: "unleash-proxy",
    // Optionally specify the Helm repository if the chart is not in the default index.
    fetchOpts: {
        repo: "https://charts.your-repo.com/",
    },
    // Set values for the Helm chart, for example:
    values: {
        // Specify custom values for the chart here.
        // Replica count, image version, etc.
    },
    // Specify the namespace if needed
    namespace: "default",
}, { provider: new k8s.Provider("k8s-provider", { kubeconfig: cluster.kubeConfigs[0].rawConfig }) });
```

In this part of the code, a Helm chart is being instantiated. You will need to specify the correct repository URL that contains the `unleash-proxy` chart. Additionally, if you have specific configuration changes that you want to apply to the chart (like setting the number of replicas, or specifying an image version), you can specify them in the `values` section.

It is important to note that you pass the kubeconfig from the Digital Ocean Kubernetes cluster to the Kubernetes provider to ensure that Pulumi knows where to deploy the Helm chart.

Finally, to complete your Pulumi program, you would run `pulumi up` within your project directory to create the cluster and deploy the chart.

Here is the full program:

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

// Create a Kubernetes cluster in Digital Ocean.
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
    region: "nyc3",
    version: "1.21.5-do.0",
    nodePool: {
        name: "default",
        size: "s-2vcpu-2gb",
        nodeCount: 2,
    },
});

// Deploy the 'unleash-proxy' Helm chart into the created cluster.
const unleashProxyChart = new k8s.helm.v3.Chart("unleash-proxy", {
    chart: "unleash-proxy",
    fetchOpts: {
        repo: "https://charts.your-repo.com/",
    },
    values: {
        // Place your configuration values here
    },
    namespace: "default",
}, { provider: new k8s.Provider("k8s-provider", { kubeconfig: cluster.kubeConfigs[0].rawConfig }) });

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

Run your Pulumi program with the command `pulumi up`, which will prompt you to create the resources. Confirm the prompt to proceed with the deployment.

Remember to replace the placeholder URL `"https://charts.your-repo.com/"` with the actual repository URL containing the `unleash-proxy` Helm chart. If the chart exists in the official Helm chart repository, you may omit the `fetchOpts` field and its properties.