1. Deploy the external-dns-host-network helm chart on Digital Ocean Kubernetes Service

    TypeScript

    To deploy the external-dns-host-network Helm chart on Digital Ocean Kubernetes Service (DOKS), we will need to follow these steps:

    1. Provision a Kubernetes cluster on Digital Ocean.
    2. Install the Helm chart for external-dns-host-network on the DOKS cluster.

    We'll start by creating a new Pulumi project using TypeScript. You should have Pulumi installed and configured with Digital Ocean access token.

    First, create a new directory for your project and initialize a new Pulumi project:

    mkdir doks-external-dns && cd doks-external-dns pulumi new typescript

    This will create some boilerplate files for your project, including index.ts, which is where we will write our code.

    Now, edit index.ts to provision a DOKS cluster and deploy the external-dns-host-network Helm chart:

    import * as digitalocean from "@pulumi/digitalocean"; import * as kubernetes from "@pulumi/kubernetes"; const clusterName = "external-dns-cluster"; // Step 1: Provision a DigitalOcean Kubernetes cluster const cluster = new digitalocean.KubernetesCluster(clusterName, { region: digitalocean.Regions.NYC1, version: "latest", nodePool: { name: "default-pool", size: digitalocean.DropletSlugs.DropletS2VCPU2GB, nodeCount: 2, } }); // Export the DigitalOcean Kubeconfig export const kubeconfig = cluster.kubeConfigs[0].rawConfig; // Step 2: Deploy the external-dns-host-network Helm chart on the cluster const externalDnsChart = new kubernetes.helm.v3.Chart("external-dns-host-network", { chart: "external-dns", version: "5.1.3", // Use the correct version of the chart fetchOpts: { repo: "https://charts.bitnami.com/bitnami", // The repository where the chart is located }, values: { // Values for the Helm chart // You should configure values according to your usage // The values below are placeholders and should be replaced with proper configuration txtOwnerId: "my-doks-cluster", serviceType: "ClusterIP", provider: "digitalocean", digitalocean: { apiToken: process.env.DIGITALOCEAN_TOKEN, }, }, }, { provider: new kubernetes.Provider("k8s-provider", { kubeconfig: cluster.kubeConfigs[0].rawConfig }) }); // Export the Helm chart deployment status export const helmDeploymentStatus = externalDnsChart.status;

    Explanation:

    • We import the necessary packages from Pulumi's DigitalOcean and Kubernetes libraries.
    • We create a DOKS cluster with the name external-dns-cluster in the NYC1 region with a default node pool configuration.
    • We export the kubeconfig, which can be used to interact with the Kubernetes cluster using kubectl.
    • We create a new Helm chart resource for external-dns using Pulumi's Kubernetes provider. We specify the chart and version and set some values that external-dns typically requires. In particular, the provider is set to digitalocean.
    • We export the status of the Helm deployment, which can be useful to confirm that the deployment was successful.
    • Note that you need to replace placeholders and actual values (e.g., DIGITALOCEAN_TOKEN, chart version, etc.) based on your requirements.

    After writing this code and setting up the environment variables (like DIGITALOCEAN_TOKEN), you can deploy this configuration by running:

    pulumi up

    This command will show you a preview of the resources Pulumi will create. If everything looks good, confirm the deployment and Pulumi will create the cluster and deploy the Helm chart.

    Remember to check out the official Pulumi documentation for digitalocean.KubernetesCluster and the Kubernetes provider:


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