1. Deploy the zimagi-lib helm chart on Digital Ocean Kubernetes Service

    TypeScript

    Deploying a Helm chart on a Kubernetes cluster often involves two primary steps: creating the Kubernetes cluster itself, then using Helm to deploy your application or library onto that cluster. In your case, we will create a DigitalOcean Kubernetes (DOKS) cluster and then deploy the zimagi-lib Helm chart.

    Before you start, make sure you've installed Pulumi and set up your DigitalOcean token. You can install Pulumi from the installation guide and configure your DigitalOcean provider as shown in the Pulumi documentation for DigitalOcean.

    1. Define the DOKS Cluster

    First, you need to define the Kubernetes cluster on DigitalOcean. Pulumi's DigitalOcean package provides a KubernetesCluster resource for this purpose. The following program in TypeScript will define a new DOKS cluster:

    import * as digitalocean from "@pulumi/digitalocean";

// Create a DigitalOcean Kubernetes cluster
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
   region: "nyc1", // Select a region e.g., New York City 1
   version: "latest", // Set the version string for Kubernetes, or use "latest"
   nodePool: {
       name: "default",
       size: "s-2vcpu-2gb", // You can select a different Droplet size based on your needs
       nodeCount: 3, // You can adjust your node count based on your requirements
   },
});

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

    This will create a Kubernetes cluster with the specified configuration. You can refer to the digitalocean.KubernetesCluster documentation for more details about the customizable options available.

    2. Set Up Helm

    To install a Helm chart, you need to use the Chart resource from Pulumi's Kubernetes package. This resource represents a helm Chart which will be applied to our DOKS cluster to deploy zimagi-lib.

    Here's how to set it up:

    import * as k8s from "@pulumi/kubernetes";

const zimagiLibChart = new k8s.helm.v3.Chart("zimagi-lib-chart", {
    chart: "zimagi-lib",
    version: "1.0.0", // Replace with the desired chart version
    namespace: "default", // Replace with the desired namespace if needed
    // values here are the helm values you'd set in a values.yaml file or via -f flag in CLI
}, { provider: new k8s.Provider("k8s-provider", { kubeconfig: cluster.kubeConfigs[0].rawConfig }) });

    This code will deploy the zimagi-lib Helm chart onto the cluster you've just created. The chart parameter specifies the name of the helm chart, replace 1.0.0 with the exact version of the chart you wish to deploy. The values field in the Chart resource can be used to set Helm values, which are the same as what you would put in a values.yaml file or specify via command line flags.

    The Provider is a Pulumi concept that maintains the state and interacts with a cloud provider's resources. In this case, a Kubernetes Provider is used to interact with your newly-created DOKS. You pass the kubeconfig from the DigitalOcean Kubernetes cluster you've created to this provider to ensure the Helm chart gets deployed to the right cluster.

    Please refer to the kubernetes.helm.v3.Chart documentation for more details about using Helm with Pulumi.

    Here is the complete program that creates the cluster and deploys zimagi-lib:

    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: "nyc1",
   version: "latest",
   nodePool: {
       name: "default",
       size: "s-2vcpu-2gb",
       nodeCount: 3,
   },
});

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

// Create a Kubernetes Provider instance that uses our cluster's kubeconfig.
const k8sProvider = new k8s.Provider("k8s-provider", {
    kubeconfig: kubeconfig,
});

// Deploy the zimagi-lib Helm chart on the DOKS
const zimagiLibChart = new k8s.helm.v3.Chart("zimagi-lib-chart", {
    chart: "zimagi-lib",
    version: "1.0.0",
    namespace: "default",
    // Include other Helm configuration like `values` below if necessary.
}, { provider: k8sProvider });

    This complete program can be used as index.ts when using Pulumi with TypeScript. After the cluster and chart are created successfully, you can also export the URLs or other outputs you may need from your application.

    Remember to replace placeholders (like 1.0.0 for the chart version or the region nyc1) with the actual values that are relevant to your deployment.

    As with any Pulumi program, you run pulumi up to preview and deploy the changes. Pulumi will perform the necessary steps to reach the desired state defined in your code.


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