1. Deploy the url-shortener-redis helm chart on Digital Ocean Kubernetes Service


    To deploy a Helm chart on Digital Ocean Kubernetes Service (DOKS) using Pulumi, you'll start by provisioning a Kubernetes cluster on Digital Ocean. Then you'll install the Helm Chart for the URL shortener application that uses Redis.

    Here's a step-by-step guide along with the Pulumi TypeScript program to achieve this:

    1. Provision a Digital Ocean Kubernetes cluster: We'll create a DOKS cluster using the digitalocean.KubernetesCluster resource. You need to provide the cluster name, region, version, node pool configuration, and any other necessary settings for your cluster.

    2. Deploy the Helm chart: Once the cluster is provisioned, we'll use the kubernetes.helm.v3.Chart resource to deploy the URL shortener application Helm chart. The chart parameter refers to the name of the chart (in this case, url-shortener-redis), and you also need to specify the values for the chart configuration.

    Here is the TypeScript program that describes the deployment:

    import * as digitalocean from "@pulumi/digitalocean"; import * as kubernetes from "@pulumi/kubernetes"; import * as pulumi from "@pulumi/pulumi"; // Step 1: Provision a Digital Ocean Kubernetes Cluster const cluster = new digitalocean.KubernetesCluster("urlShortenerCluster", { region: "nyc3", version: "latest", // Replace with a specific Kubernetes version if needed nodePool: { name: "default", size: "s-2vcpu-2gb", // This is the size of the node (VM) in DigitalOcean nodeCount: 2, // Determines how many nodes you want in your node pool }, }); // Step 2: Deploy the "url-shortener-redis" Helm Chart // Use the `kubernetes` provider to connect to the Digital Ocean Kubernetes cluster const k8sProvider = new kubernetes.Provider("k8sProvider", { kubeconfig: cluster.kubeConfigs[0].rawConfig, }); const urlShortenerChart = new kubernetes.helm.v3.Chart("urlShortenerChart", { chart: "url-shortener-redis", // This name should be replaced with the actual chart name values: { // Here you will specify any values that the Helm chart accepts. // For the URL shortener, you might need to specify Redis configurations or other parameters // For example: // redis: { // password: "your_redis_password", // }, }, }, { provider: k8sProvider }); // Optional: Export the cluster's kubeconfig and the app service endpoint export const kubeconfig = cluster.kubeConfigs[0].rawConfig; export const appServiceEndpoint = urlShortenerChart.getResourceProperty("v1/Service", "url-shortener-service", "status");

    In the code above:

    • digitalocean.KubernetesCluster resource is used to create a new Kubernetes cluster in the specified region. We're using the nodePool property to define the size and number of nodes in the node pool.
    • kubernetes.helm.v3.Chart resource is used to deploy the Helm chart by referencing it by name and providing necessary values configuration. Since the chart needs to be installed on the DOKS cluster, we create a Kubernetes Provider instance that uses the kubeconfig output from the created cluster.
    • We export kubeconfig to allow users to interact with the Kubernetes cluster using tools like kubectl.
    • We also attempt to export the service endpoint (assuming the Helm chart creates a Kubernetes Service named url-shortener-service), which can be used to access the deployed application. Note that you might need to adjust this based on the actual resources your Helm chart creates.

    Remember to replace placeholders like your_redis_password and url-shortener-service with the actual values provided by the Helm chart documentation or specific to your deployment needs.

    After the program is complete, you would run it using the Pulumi CLI to provision your infrastructure:

    pulumi up

    Be sure to have Pulumi CLI and Digital Ocean access configured on your local machine where you run this command. This will kick off the deployment process orchestrated by Pulumi, and you will see all the infrastructure changes in your CLI or Pulumi Console.