1. Deploy the sherlock helm chart on Digital Ocean Kubernetes Service

    TypeScript

    Deploying a Helm chart on a Kubernetes cluster involves multiple steps. First, you'll need a Kubernetes cluster running; then you can use the Helm provider in Pulumi to deploy your Helm chart onto the cluster.

    In this guidance, we will:

    1. Create a DigitalOcean Kubernetes cluster.
    2. Deploy the "sherlock" Helm chart onto the cluster.

    Before you begin, ensure you have the following prerequisites in place:

    • Pulumi CLI installed.
    • DigitalOcean token set up for Pulumi to authenticate API requests (typically set as an environment variable DIGITALOCEAN_TOKEN).
    • Helm CLI installed (if you want to download and inspect the Helm chart locally).

    Let's walk through the program that accomplishes this.

    Pulumi Program to Create a DO Kubernetes Cluster and Deploy a Helm Chart

    import * as digitalocean from "@pulumi/digitalocean"; import * as k8s from "@pulumi/kubernetes"; import * as pulumi from "@pulumi/pulumi"; // Create a DigitalOcean Kubernetes cluster const cluster = new digitalocean.KubernetesCluster("do-cluster", { region: "nyc1", version: "latest", // Use the latest available Kubernetes version nodePool: { name: "default", size: "s-2vcpu-2gb", // This is the slug for the type of Droplet (VM) to run. nodeCount: 2, // Running 2 nodes for this example }, }); // Export the Kubeconfig so that the Kubernetes provider can use it to deploy resources export const kubeconfig = cluster.kubeConfigs[0].rawConfig; // Create a Kubernetes provider instance using the kubeconfig from the DO cluster const k8sProvider = new k8s.Provider("do-k8s", { kubeconfig: kubeconfig, }); // Deploy the "sherlock" Helm chart into the DigitalOcean Kubernetes Cluster using the Kubernetes provider const sherlockChart = new k8s.helm.v3.Chart("sherlock-chart", { chart: "sherlock", // Assumes `sherlock` is available in the default repository set up in your Helm CLI settings. // If it's in a different repo, you may need to add the `repo` key with the repository URL. // Specify version if you want a particular version of the Helm chart. // value: { /* if needed, specify values to override default chart values */ }, }, { provider: k8sProvider }); // Now that our cluster and Helm chart are declared in Pulumi, we run `pulumi up` // to create the DO Kubernetes Cluster and then deploy the "sherlock" Helm chart onto the cluster.

    Explanation

    1. We import the necessary packages to interact with DigitalOcean resources and Kubernetes resources through Pulumi.
    2. We define a DigitalOcean Kubernetes (do-cluster), specifying the region, version, and size/count of nodes we want in our default node pool.
    3. We then export the kubeconfig of the created Kubernetes cluster; Pulumi will automatically populate this once the cluster is created.
    4. With the kubeconfig, we instantiate a Kubernetes provider that Pulumi uses to communicate with our DigitalOcean Kubernetes cluster.
    5. Finally, we declare the Helm chart (sherlock-chart) we want to deploy using the k8s provider. We specify the chart name as "sherlock" and associate it with the Kubernetes provider we've set up, which is linked to our DO cluster.

    Remember, for this to work, you must have the Helm chart available in your Helm repository, or if it’s in a private repository, you'll need to include additional configuration to pull it.

    When you run pulumi up, Pulumi will reach out to DigitalOcean to create the Kubernetes cluster. Once the cluster is available, Pulumi will then deploy the "sherlock" Helm chart onto that cluster.

    Please, replace placeholders like chart values or repository URLs with actual values that are appropriate for your specific use case.

    Lastly, you'll want to download the Pulumi CLI and have access to your DigitalOcean account API token before proceeding with the actual deployment. Visit the Pulumi Installation Guide and the DigitalOcean API token page for instructions on these steps.


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