1. Deploy the pizza-app helm chart on Digital Ocean Kubernetes Service


    Deploying an application using a Helm chart on Digital Ocean's Kubernetes Service involves several steps:

    1. Set up a Kubernetes cluster on Digital Ocean: We use the digitalocean.KubernetesCluster resource to create a Kubernetes cluster. We define the configuration of our cluster, including the number of nodes, region, and version of Kubernetes.

    2. Deploy the application using Helm: Once our Kubernetes cluster is ready, we use the kubernetes.helm.sh/v3.Chart resource to deploy our application—in this case, the pizza-app—using a Helm chart. Helm is a package manager for Kubernetes, which simplifies deployment and management of applications. A Helm chart contains all the necessary resources and configuration files to deploy an application.

    Now, let's walk through the Pulumi TypeScript program that accomplishes this:

    import * as digitalocean from "@pulumi/digitalocean"; import * as kubernetes from "@pulumi/kubernetes"; import * as pulumi from "@pulumi/pulumi"; // Create a DigitalOcean Kubernetes cluster with default settings const cluster = new digitalocean.KubernetesCluster("do-cluster", { region: digitalocean.Regions.NYC3, // Choose the region where you want your cluster version: "latest", // Use the latest available Kubernetes version nodePool: { name: "default", // Name of the node pool size: digitalocean.DropletSlugs.DropletS2VCPU2GB, // Size of droplets to use for nodes nodeCount: 2, // Number of nodes in the node pool }, }); // Once the cluster is created, we can deploy application using Helm chart // Let's assume pizza-app is a publicly available helm chart const pizzaAppChart = new kubernetes.helm.sh/v3.Chart("pizza-app", { chart: "pizza-app", // Change this to the actual chart name // You can specify the repository if the chart is in a custom helm repo: // repo: "https://charts.example.com/", // version: "1.0.0", // The version of the chart to deploy namespace: "default", // Namespace where you want to install your application values: { // Custom values for your application // Provide configuration specific to the pizza-app chart // For example: // service: { // type: "LoadBalancer", // }, }, }, { provider: new kubernetes.Provider("k8s-provider", { kubeconfig: cluster.kubeConfigs[0].rawConfig }) }); // Export the cluster's kubeconfig and the application service endpoint export const kubeconfig = cluster.kubeConfigs[0].rawConfig;

    In this program:

    • We first import the necessary modules from Pulumi's Digital Ocean and Kubernetes libraries.
    • We create a Kubernetes cluster in Digital Ocean with the desired region, version, node pool name, droplet size, and node count configuration.
    • Then, we define a Helm chart for the pizza-app application. In the chart's properties, there could be a repository URL if this application is hosted on a custom Helm repo; otherwise, it will default to the public Helm repository.
    • We also specify a namespace where the application will live. If not given, it defaults to the default namespace.
    • The values object is used to provide any custom values that the pizza-app chart expects; these values include configurations that the Helm chart uses to customize the deployment.
    • Finally, we set up a Kubernetes provider with the cluster's kubeconfig, which is needed to deploy resources to our cluster.
    • We export the kubeconfig, which allows us to interact with the Kubernetes cluster using kubectl or similar tools.

    Please replace the placeholder values and configurations with actual values that apply to your pizza-app and preferred Digital Ocean settings. Remember to provide the actual Helm chart name for pizza-app if it is hosted elsewhere and not available in the public Helm repository.